/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 18:30:48,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 18:30:48,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 18:30:48,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 18:30:48,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 18:30:48,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 18:30:48,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 18:30:48,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 18:30:48,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 18:30:48,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 18:30:48,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 18:30:48,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 18:30:48,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 18:30:48,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 18:30:48,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 18:30:48,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 18:30:48,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 18:30:48,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 18:30:48,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 18:30:48,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 18:30:48,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 18:30:48,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 18:30:48,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 18:30:48,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 18:30:48,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 18:30:48,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-01-16 18:30:48,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-01-16 18:30:48,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-01-16 18:30:48,487 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-01-16 18:30:48,503 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 18:30:48,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 18:30:48,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 18:30:48,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 18:30:48,505 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 18:30:48,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 18:30:48,505 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 18:30:48,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 18:30:48,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 18:30:48,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 18:30:48,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 18:30:48,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 18:30:48,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 18:30:48,507 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 18:30:48,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 18:30:48,507 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 18:30:48,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 18:30:48,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 18:30:48,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 18:30:48,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 18:30:48,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 18:30:48,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 18:30:48,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 18:30:48,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 18:30:48,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 18:30:48,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 18:30:48,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 18:30:48,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-01-16 18:30:48,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 18:30:48,819 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 18:30:48,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 18:30:48,842 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 18:30:48,844 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 18:30:48,844 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 18:30:48,845 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl [2020-01-16 18:30:48,845 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl' [2020-01-16 18:30:48,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 18:30:48,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 18:30:48,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 18:30:48,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 18:30:48,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 18:30:48,897 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 06:30:48" (1/1) ... [2020-01-16 18:30:48,908 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 06:30:48" (1/1) ... [2020-01-16 18:30:48,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 18:30:48,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 18:30:48,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 18:30:48,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 18:30:48,931 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 06:30:48" (1/1) ... [2020-01-16 18:30:48,931 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 06:30:48" (1/1) ... [2020-01-16 18:30:48,933 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 06:30:48" (1/1) ... [2020-01-16 18:30:48,933 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 06:30:48" (1/1) ... [2020-01-16 18:30:48,940 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 06:30:48" (1/1) ... [2020-01-16 18:30:48,943 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 06:30:48" (1/1) ... [2020-01-16 18:30:48,944 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 06:30:48" (1/1) ... [2020-01-16 18:30:48,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 18:30:48,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 18:30:48,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 18:30:48,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 18:30:48,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:48" (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 18:30:49,020 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 18:30:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 18:30:49,021 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 18:30:49,023 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 18:30:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 18:30:49,023 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 18:30:49,024 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 18:30:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 18:30:49,024 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 18:30:49,024 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 18:30:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 18:30:49,024 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 18:30:49,025 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 18:30:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 18:30:49,025 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 18:30:49,025 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 18:30:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 18:30:49,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 18:30:49,027 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 18:30:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 18:30:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 18:30:49,027 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-01-16 18:30:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-01-16 18:30:49,028 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-01-16 18:30:49,028 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-01-16 18:30:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-01-16 18:30:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-01-16 18:30:49,036 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2020-01-16 18:30:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2020-01-16 18:30:49,037 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2020-01-16 18:30:49,038 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 18:30:49,218 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 18:30:49,218 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 18:30:49,220 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:30:49 BoogieIcfgContainer [2020-01-16 18:30:49,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 18:30:49,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 18:30:49,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 18:30:49,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 18:30:49,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:48" (1/2) ... [2020-01-16 18:30:49,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbffb15 and model type example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 06:30:49, skipping insertion in model container [2020-01-16 18:30:49,227 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 06:30:49" (2/2) ... [2020-01-16 18:30:49,228 INFO L109 eAbstractionObserver]: Analyzing ICFG example_9.bpl [2020-01-16 18:30:49,239 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-01-16 18:30:49,239 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 18:30:49,246 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 18:30:49,247 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 18:30:49,518 INFO L250 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-01-16 18:30:49,539 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 18:30:49,540 INFO L375 AbstractCegarLoop]: Hoare is true [2020-01-16 18:30:49,540 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 18:30:49,540 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 18:30:49,540 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 18:30:49,540 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 18:30:49,541 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 18:30:49,541 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 18:30:49,559 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 120 transitions [2020-01-16 18:30:49,561 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 120 transitions [2020-01-16 18:30:50,519 INFO L129 PetriNetUnfolder]: 1793/2334 cut-off events. [2020-01-16 18:30:50,520 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2020-01-16 18:30:50,571 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 18:30:50,628 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 120 transitions [2020-01-16 18:30:51,392 INFO L129 PetriNetUnfolder]: 1793/2334 cut-off events. [2020-01-16 18:30:51,393 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2020-01-16 18:30:51,415 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 18:30:51,531 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2736 [2020-01-16 18:30:51,533 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-01-16 18:30:51,818 INFO L206 etLargeBlockEncoding]: Checked pairs total: 756 [2020-01-16 18:30:51,818 INFO L214 etLargeBlockEncoding]: Total number of compositions: 10 [2020-01-16 18:30:51,822 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 110 transitions [2020-01-16 18:30:54,795 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 20196 states. [2020-01-16 18:30:54,797 INFO L276 IsEmpty]: Start isEmpty. Operand 20196 states. [2020-01-16 18:30:54,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:30:54,958 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:54,959 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:54,960 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 18:30:54,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:54,969 INFO L82 PathProgramCache]: Analyzing trace with hash 114387570, now seen corresponding path program 1 times [2020-01-16 18:30:54,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:54,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671614399] [2020-01-16 18:30:54,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:55,171 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 18:30:55,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671614399] [2020-01-16 18:30:55,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:55,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:30:55,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656381915] [2020-01-16 18:30:55,181 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:30:55,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:55,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:30:55,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:30:55,199 INFO L87 Difference]: Start difference. First operand 20196 states. Second operand 3 states. [2020-01-16 18:30:55,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:55,626 INFO L93 Difference]: Finished difference Result 18916 states and 109908 transitions. [2020-01-16 18:30:55,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:30:55,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:30:55,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:56,747 INFO L225 Difference]: With dead ends: 18916 [2020-01-16 18:30:56,747 INFO L226 Difference]: Without dead ends: 18915 [2020-01-16 18:30:56,749 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 18:30:57,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18915 states. [2020-01-16 18:30:58,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18915 to 18915. [2020-01-16 18:30:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18915 states. [2020-01-16 18:30:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18915 states to 18915 states and 109907 transitions. [2020-01-16 18:30:58,231 INFO L78 Accepts]: Start accepts. Automaton has 18915 states and 109907 transitions. Word has length 28 [2020-01-16 18:30:58,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:58,232 INFO L478 AbstractCegarLoop]: Abstraction has 18915 states and 109907 transitions. [2020-01-16 18:30:58,233 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:30:58,233 INFO L276 IsEmpty]: Start isEmpty. Operand 18915 states and 109907 transitions. [2020-01-16 18:30:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:30:58,344 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:58,344 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:58,344 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 18:30:58,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:58,345 INFO L82 PathProgramCache]: Analyzing trace with hash -520253774, now seen corresponding path program 1 times [2020-01-16 18:30:58,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:58,345 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17806026] [2020-01-16 18:30:58,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:58,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17806026] [2020-01-16 18:30:58,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:58,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:30:58,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726378427] [2020-01-16 18:30:58,380 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:30:58,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:58,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:30:58,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:30:58,382 INFO L87 Difference]: Start difference. First operand 18915 states and 109907 transitions. Second operand 3 states. [2020-01-16 18:30:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:58,552 INFO L93 Difference]: Finished difference Result 15971 states and 88467 transitions. [2020-01-16 18:30:58,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:30:58,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:30:58,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:58,643 INFO L225 Difference]: With dead ends: 15971 [2020-01-16 18:30:58,643 INFO L226 Difference]: Without dead ends: 15971 [2020-01-16 18:30:58,644 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 18:30:58,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15971 states. [2020-01-16 18:31:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15971 to 15971. [2020-01-16 18:31:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15971 states. [2020-01-16 18:31:00,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15971 states to 15971 states and 88467 transitions. [2020-01-16 18:31:00,801 INFO L78 Accepts]: Start accepts. Automaton has 15971 states and 88467 transitions. Word has length 28 [2020-01-16 18:31:00,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:00,801 INFO L478 AbstractCegarLoop]: Abstraction has 15971 states and 88467 transitions. [2020-01-16 18:31:00,802 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:31:00,802 INFO L276 IsEmpty]: Start isEmpty. Operand 15971 states and 88467 transitions. [2020-01-16 18:31:00,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:00,851 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:00,851 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:00,851 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 18:31:00,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:00,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1967135382, now seen corresponding path program 1 times [2020-01-16 18:31:00,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:00,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396964335] [2020-01-16 18:31:00,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:00,905 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 18:31:00,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396964335] [2020-01-16 18:31:00,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:00,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:31:00,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258030334] [2020-01-16 18:31:00,906 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:31:00,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:00,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:31:00,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:31:00,907 INFO L87 Difference]: Start difference. First operand 15971 states and 88467 transitions. Second operand 3 states. [2020-01-16 18:31:00,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:00,985 INFO L93 Difference]: Finished difference Result 10243 states and 54163 transitions. [2020-01-16 18:31:00,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:31:00,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:31:00,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:01,057 INFO L225 Difference]: With dead ends: 10243 [2020-01-16 18:31:01,058 INFO L226 Difference]: Without dead ends: 10243 [2020-01-16 18:31:01,058 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 18:31:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10243 states. [2020-01-16 18:31:01,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10243 to 10243. [2020-01-16 18:31:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10243 states. [2020-01-16 18:31:01,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10243 states to 10243 states and 54163 transitions. [2020-01-16 18:31:01,547 INFO L78 Accepts]: Start accepts. Automaton has 10243 states and 54163 transitions. Word has length 28 [2020-01-16 18:31:01,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:01,548 INFO L478 AbstractCegarLoop]: Abstraction has 10243 states and 54163 transitions. [2020-01-16 18:31:01,548 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:31:01,548 INFO L276 IsEmpty]: Start isEmpty. Operand 10243 states and 54163 transitions. [2020-01-16 18:31:01,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:01,584 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:01,584 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 18:31:01,585 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 18:31:01,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:01,585 INFO L82 PathProgramCache]: Analyzing trace with hash 2067096892, now seen corresponding path program 1 times [2020-01-16 18:31:01,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:01,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542605580] [2020-01-16 18:31:01,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:01,617 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 18:31:01,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542605580] [2020-01-16 18:31:01,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:01,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:31:01,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876450350] [2020-01-16 18:31:01,618 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:31:01,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:01,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:31:01,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:31:01,619 INFO L87 Difference]: Start difference. First operand 10243 states and 54163 transitions. Second operand 3 states. [2020-01-16 18:31:01,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:01,759 INFO L93 Difference]: Finished difference Result 9987 states and 52243 transitions. [2020-01-16 18:31:01,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:31:01,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:31:01,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:01,804 INFO L225 Difference]: With dead ends: 9987 [2020-01-16 18:31:02,158 INFO L226 Difference]: Without dead ends: 9987 [2020-01-16 18:31:02,158 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 18:31:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2020-01-16 18:31:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 9987. [2020-01-16 18:31:02,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9987 states. [2020-01-16 18:31:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9987 states to 9987 states and 52243 transitions. [2020-01-16 18:31:02,593 INFO L78 Accepts]: Start accepts. Automaton has 9987 states and 52243 transitions. Word has length 28 [2020-01-16 18:31:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:02,594 INFO L478 AbstractCegarLoop]: Abstraction has 9987 states and 52243 transitions. [2020-01-16 18:31:02,594 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:31:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 9987 states and 52243 transitions. [2020-01-16 18:31:02,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:02,623 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:02,623 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:02,624 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 18:31:02,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:02,624 INFO L82 PathProgramCache]: Analyzing trace with hash -77951046, now seen corresponding path program 1 times [2020-01-16 18:31:02,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:02,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3385188] [2020-01-16 18:31:02,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:02,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:02,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3385188] [2020-01-16 18:31:02,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:02,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:31:02,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395740289] [2020-01-16 18:31:02,655 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:31:02,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:02,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:31:02,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:31:02,656 INFO L87 Difference]: Start difference. First operand 9987 states and 52243 transitions. Second operand 3 states. [2020-01-16 18:31:02,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:02,732 INFO L93 Difference]: Finished difference Result 6171 states and 30927 transitions. [2020-01-16 18:31:02,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:31:02,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:31:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:02,754 INFO L225 Difference]: With dead ends: 6171 [2020-01-16 18:31:02,754 INFO L226 Difference]: Without dead ends: 6171 [2020-01-16 18:31:02,755 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 18:31:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6171 states. [2020-01-16 18:31:02,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6171 to 6171. [2020-01-16 18:31:02,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6171 states. [2020-01-16 18:31:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6171 states to 6171 states and 30927 transitions. [2020-01-16 18:31:03,013 INFO L78 Accepts]: Start accepts. Automaton has 6171 states and 30927 transitions. Word has length 28 [2020-01-16 18:31:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:03,013 INFO L478 AbstractCegarLoop]: Abstraction has 6171 states and 30927 transitions. [2020-01-16 18:31:03,013 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:31:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 6171 states and 30927 transitions. [2020-01-16 18:31:03,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:03,035 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:03,035 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 18:31:03,036 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 18:31:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:03,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1337464426, now seen corresponding path program 1 times [2020-01-16 18:31:03,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:03,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974580002] [2020-01-16 18:31:03,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:03,101 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 18:31:03,101 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974580002] [2020-01-16 18:31:03,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:03,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:31:03,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305644561] [2020-01-16 18:31:03,103 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:31:03,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:03,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:31:03,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:31:03,104 INFO L87 Difference]: Start difference. First operand 6171 states and 30927 transitions. Second operand 3 states. [2020-01-16 18:31:03,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:03,152 INFO L93 Difference]: Finished difference Result 3883 states and 18511 transitions. [2020-01-16 18:31:03,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:31:03,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:31:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:03,167 INFO L225 Difference]: With dead ends: 3883 [2020-01-16 18:31:03,167 INFO L226 Difference]: Without dead ends: 3883 [2020-01-16 18:31:03,168 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 18:31:03,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2020-01-16 18:31:03,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3883. [2020-01-16 18:31:03,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2020-01-16 18:31:03,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 18511 transitions. [2020-01-16 18:31:03,294 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 18511 transitions. Word has length 28 [2020-01-16 18:31:03,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:03,295 INFO L478 AbstractCegarLoop]: Abstraction has 3883 states and 18511 transitions. [2020-01-16 18:31:03,295 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:31:03,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 18511 transitions. [2020-01-16 18:31:03,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:03,302 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:03,302 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 18:31:03,302 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 18:31:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:03,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1461842622, now seen corresponding path program 1 times [2020-01-16 18:31:03,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:03,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276701063] [2020-01-16 18:31:03,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:03,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276701063] [2020-01-16 18:31:03,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:03,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:31:03,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778214894] [2020-01-16 18:31:03,339 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:31:03,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:03,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:31:03,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:31:03,340 INFO L87 Difference]: Start difference. First operand 3883 states and 18511 transitions. Second operand 3 states. [2020-01-16 18:31:03,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:03,366 INFO L93 Difference]: Finished difference Result 2539 states and 11503 transitions. [2020-01-16 18:31:03,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:31:03,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:31:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:03,373 INFO L225 Difference]: With dead ends: 2539 [2020-01-16 18:31:03,373 INFO L226 Difference]: Without dead ends: 2539 [2020-01-16 18:31:03,373 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 18:31:03,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2020-01-16 18:31:03,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2539. [2020-01-16 18:31:03,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2539 states. [2020-01-16 18:31:03,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2539 states to 2539 states and 11503 transitions. [2020-01-16 18:31:03,454 INFO L78 Accepts]: Start accepts. Automaton has 2539 states and 11503 transitions. Word has length 28 [2020-01-16 18:31:03,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:03,455 INFO L478 AbstractCegarLoop]: Abstraction has 2539 states and 11503 transitions. [2020-01-16 18:31:03,455 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:31:03,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2539 states and 11503 transitions. [2020-01-16 18:31:03,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:03,460 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:03,460 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:03,461 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 18:31:03,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:03,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1283995022, now seen corresponding path program 1 times [2020-01-16 18:31:03,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:03,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701289357] [2020-01-16 18:31:03,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:03,492 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 18:31:03,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701289357] [2020-01-16 18:31:03,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:03,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:31:03,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499878464] [2020-01-16 18:31:03,495 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:31:03,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:03,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:31:03,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:31:03,495 INFO L87 Difference]: Start difference. First operand 2539 states and 11503 transitions. Second operand 3 states. [2020-01-16 18:31:03,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:03,522 INFO L93 Difference]: Finished difference Result 1535 states and 6913 transitions. [2020-01-16 18:31:03,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:31:03,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:31:03,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:03,528 INFO L225 Difference]: With dead ends: 1535 [2020-01-16 18:31:03,528 INFO L226 Difference]: Without dead ends: 1535 [2020-01-16 18:31:03,529 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 18:31:03,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2020-01-16 18:31:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1535. [2020-01-16 18:31:03,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2020-01-16 18:31:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6913 transitions. [2020-01-16 18:31:03,729 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6913 transitions. Word has length 28 [2020-01-16 18:31:03,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:03,730 INFO L478 AbstractCegarLoop]: Abstraction has 1535 states and 6913 transitions. [2020-01-16 18:31:03,730 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:31:03,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6913 transitions. [2020-01-16 18:31:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:03,734 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:03,734 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 18:31:03,734 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 18:31:03,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:03,735 INFO L82 PathProgramCache]: Analyzing trace with hash 662697718, now seen corresponding path program 1 times [2020-01-16 18:31:03,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:03,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3920329] [2020-01-16 18:31:03,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:04,456 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:31:04,606 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:31:04,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:04,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3920329] [2020-01-16 18:31:04,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:04,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:04,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771013116] [2020-01-16 18:31:04,621 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:04,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:04,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:04,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:04,623 INFO L87 Difference]: Start difference. First operand 1535 states and 6913 transitions. Second operand 11 states. [2020-01-16 18:31:04,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:04,889 INFO L93 Difference]: Finished difference Result 3001 states and 11928 transitions. [2020-01-16 18:31:04,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:04,890 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:04,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:04,898 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:31:04,898 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 18:31:04,899 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 18:31:04,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 18:31:04,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1583. [2020-01-16 18:31:04,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:31:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7118 transitions. [2020-01-16 18:31:04,998 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7118 transitions. Word has length 28 [2020-01-16 18:31:04,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:04,998 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7118 transitions. [2020-01-16 18:31:04,998 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7118 transitions. [2020-01-16 18:31:05,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:05,002 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:05,002 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 18:31:05,002 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 18:31:05,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:05,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1407400216, now seen corresponding path program 2 times [2020-01-16 18:31:05,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:05,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597477586] [2020-01-16 18:31:05,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:05,621 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:31:05,772 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:05,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597477586] [2020-01-16 18:31:05,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:05,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:05,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423312691] [2020-01-16 18:31:05,784 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:05,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:05,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:05,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:05,784 INFO L87 Difference]: Start difference. First operand 1583 states and 7118 transitions. Second operand 11 states. [2020-01-16 18:31:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:06,078 INFO L93 Difference]: Finished difference Result 3002 states and 11925 transitions. [2020-01-16 18:31:06,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:06,079 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:06,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:06,086 INFO L225 Difference]: With dead ends: 3002 [2020-01-16 18:31:06,086 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:31:06,087 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 18:31:06,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:31:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1578. [2020-01-16 18:31:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:31:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7104 transitions. [2020-01-16 18:31:06,171 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7104 transitions. Word has length 28 [2020-01-16 18:31:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:06,172 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7104 transitions. [2020-01-16 18:31:06,172 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:06,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7104 transitions. [2020-01-16 18:31:06,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:06,176 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:06,176 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 18:31:06,176 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 18:31:06,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:06,176 INFO L82 PathProgramCache]: Analyzing trace with hash -2021328620, now seen corresponding path program 3 times [2020-01-16 18:31:06,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:06,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868896113] [2020-01-16 18:31:06,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:06,780 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:31:06,912 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:31:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:06,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868896113] [2020-01-16 18:31:06,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:06,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:06,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727703810] [2020-01-16 18:31:06,923 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:06,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:06,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:06,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:06,924 INFO L87 Difference]: Start difference. First operand 1578 states and 7104 transitions. Second operand 11 states. [2020-01-16 18:31:07,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:07,203 INFO L93 Difference]: Finished difference Result 3006 states and 11932 transitions. [2020-01-16 18:31:07,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:07,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:07,212 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:31:07,212 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:31:07,213 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 18:31:07,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:31:07,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1584. [2020-01-16 18:31:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:31:07,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7115 transitions. [2020-01-16 18:31:07,311 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7115 transitions. Word has length 28 [2020-01-16 18:31:07,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:07,312 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7115 transitions. [2020-01-16 18:31:07,312 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:07,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7115 transitions. [2020-01-16 18:31:07,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:07,316 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:07,316 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:07,317 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 18:31:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:07,317 INFO L82 PathProgramCache]: Analyzing trace with hash -531923624, now seen corresponding path program 4 times [2020-01-16 18:31:07,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:07,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098141882] [2020-01-16 18:31:07,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:07,853 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:31:07,987 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:31:07,995 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 18:31:07,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098141882] [2020-01-16 18:31:07,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:07,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:07,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085135611] [2020-01-16 18:31:07,996 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:07,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:07,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:07,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:07,997 INFO L87 Difference]: Start difference. First operand 1584 states and 7115 transitions. Second operand 11 states. [2020-01-16 18:31:08,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:08,201 INFO L93 Difference]: Finished difference Result 3011 states and 11936 transitions. [2020-01-16 18:31:08,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:08,201 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:08,209 INFO L225 Difference]: With dead ends: 3011 [2020-01-16 18:31:08,209 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:31:08,209 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 18:31:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:31:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1578. [2020-01-16 18:31:08,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:31:08,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7098 transitions. [2020-01-16 18:31:08,289 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7098 transitions. Word has length 28 [2020-01-16 18:31:08,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:08,289 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7098 transitions. [2020-01-16 18:31:08,289 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:08,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7098 transitions. [2020-01-16 18:31:08,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:08,293 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:08,293 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 18:31:08,293 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 18:31:08,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:08,293 INFO L82 PathProgramCache]: Analyzing trace with hash 334314836, now seen corresponding path program 5 times [2020-01-16 18:31:08,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:08,294 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590723320] [2020-01-16 18:31:08,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:08,843 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:31:08,976 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:08,985 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 18:31:08,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590723320] [2020-01-16 18:31:08,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:08,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:08,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264775222] [2020-01-16 18:31:08,987 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:08,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:08,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:08,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:08,987 INFO L87 Difference]: Start difference. First operand 1578 states and 7098 transitions. Second operand 11 states. [2020-01-16 18:31:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:09,203 INFO L93 Difference]: Finished difference Result 3009 states and 11933 transitions. [2020-01-16 18:31:09,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:09,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:09,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:09,211 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:31:09,211 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 18:31:09,212 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 18:31:09,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 18:31:09,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1585. [2020-01-16 18:31:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:31:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7111 transitions. [2020-01-16 18:31:09,284 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7111 transitions. Word has length 28 [2020-01-16 18:31:09,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:09,284 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7111 transitions. [2020-01-16 18:31:09,284 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7111 transitions. [2020-01-16 18:31:09,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:09,287 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:09,287 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 18:31:09,287 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 18:31:09,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:09,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1079017334, now seen corresponding path program 6 times [2020-01-16 18:31:09,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:09,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152763393] [2020-01-16 18:31:09,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:09,824 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:31:09,951 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:09,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152763393] [2020-01-16 18:31:09,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:09,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:09,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424572502] [2020-01-16 18:31:09,960 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:09,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:09,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:09,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:09,960 INFO L87 Difference]: Start difference. First operand 1585 states and 7111 transitions. Second operand 11 states. [2020-01-16 18:31:10,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:10,124 INFO L93 Difference]: Finished difference Result 3013 states and 11934 transitions. [2020-01-16 18:31:10,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:10,125 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:10,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:10,132 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 18:31:10,132 INFO L226 Difference]: Without dead ends: 2980 [2020-01-16 18:31:10,132 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 18:31:10,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-01-16 18:31:10,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1572. [2020-01-16 18:31:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:31:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7081 transitions. [2020-01-16 18:31:10,202 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7081 transitions. Word has length 28 [2020-01-16 18:31:10,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:10,202 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7081 transitions. [2020-01-16 18:31:10,202 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7081 transitions. [2020-01-16 18:31:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:10,205 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:10,205 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 18:31:10,205 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 18:31:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:10,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1382710192, now seen corresponding path program 7 times [2020-01-16 18:31:10,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:10,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279408985] [2020-01-16 18:31:10,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:10,859 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:31:10,980 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:10,987 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279408985] [2020-01-16 18:31:10,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:10,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:10,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734637750] [2020-01-16 18:31:10,987 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:10,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:10,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:10,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:10,988 INFO L87 Difference]: Start difference. First operand 1572 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:31:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:11,202 INFO L93 Difference]: Finished difference Result 2996 states and 11912 transitions. [2020-01-16 18:31:11,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:11,203 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:11,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:11,210 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:31:11,210 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:31:11,211 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 18:31:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:31:11,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1582. [2020-01-16 18:31:11,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:31:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7109 transitions. [2020-01-16 18:31:11,279 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7109 transitions. Word has length 28 [2020-01-16 18:31:11,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:11,280 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7109 transitions. [2020-01-16 18:31:11,280 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7109 transitions. [2020-01-16 18:31:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:11,282 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:11,283 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 18:31:11,283 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 18:31:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:11,283 INFO L82 PathProgramCache]: Analyzing trace with hash 2127412690, now seen corresponding path program 8 times [2020-01-16 18:31:11,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:11,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518372068] [2020-01-16 18:31:11,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:11,906 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:31:11,914 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 18:31:11,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518372068] [2020-01-16 18:31:11,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:11,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:11,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640160307] [2020-01-16 18:31:11,915 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:11,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:11,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:11,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:11,920 INFO L87 Difference]: Start difference. First operand 1582 states and 7109 transitions. Second operand 11 states. [2020-01-16 18:31:12,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:12,132 INFO L93 Difference]: Finished difference Result 2997 states and 11909 transitions. [2020-01-16 18:31:12,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:12,132 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:12,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:12,140 INFO L225 Difference]: With dead ends: 2997 [2020-01-16 18:31:12,140 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 18:31:12,140 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 18:31:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 18:31:12,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1577. [2020-01-16 18:31:12,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:31:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7095 transitions. [2020-01-16 18:31:12,208 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7095 transitions. Word has length 28 [2020-01-16 18:31:12,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:12,208 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7095 transitions. [2020-01-16 18:31:12,208 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:12,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7095 transitions. [2020-01-16 18:31:12,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:12,211 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:12,211 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:12,211 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 18:31:12,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:12,212 INFO L82 PathProgramCache]: Analyzing trace with hash 309624812, now seen corresponding path program 9 times [2020-01-16 18:31:12,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:12,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591468282] [2020-01-16 18:31:12,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:12,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591468282] [2020-01-16 18:31:12,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:12,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:12,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146383699] [2020-01-16 18:31:12,848 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:12,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:12,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:12,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:12,849 INFO L87 Difference]: Start difference. First operand 1577 states and 7095 transitions. Second operand 11 states. [2020-01-16 18:31:13,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:13,053 INFO L93 Difference]: Finished difference Result 2998 states and 11911 transitions. [2020-01-16 18:31:13,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:13,053 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:13,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:13,062 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 18:31:13,062 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:31:13,063 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 18:31:13,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:31:13,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1582. [2020-01-16 18:31:13,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:31:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7104 transitions. [2020-01-16 18:31:13,130 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7104 transitions. Word has length 28 [2020-01-16 18:31:13,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:13,130 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7104 transitions. [2020-01-16 18:31:13,130 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7104 transitions. [2020-01-16 18:31:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:13,133 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:13,133 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:13,133 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 18:31:13,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:13,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1751234990, now seen corresponding path program 10 times [2020-01-16 18:31:13,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:13,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988626814] [2020-01-16 18:31:13,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:13,816 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:13,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988626814] [2020-01-16 18:31:13,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:13,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:13,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336408267] [2020-01-16 18:31:13,825 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:13,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:13,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:13,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:13,826 INFO L87 Difference]: Start difference. First operand 1582 states and 7104 transitions. Second operand 11 states. [2020-01-16 18:31:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:14,053 INFO L93 Difference]: Finished difference Result 3001 states and 11912 transitions. [2020-01-16 18:31:14,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:14,053 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:14,061 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:31:14,061 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:31:14,062 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 18:31:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:31:14,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1577. [2020-01-16 18:31:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:31:14,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7090 transitions. [2020-01-16 18:31:14,129 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7090 transitions. Word has length 28 [2020-01-16 18:31:14,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:14,129 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7090 transitions. [2020-01-16 18:31:14,129 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7090 transitions. [2020-01-16 18:31:14,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:14,132 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:14,132 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 18:31:14,132 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 18:31:14,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:14,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1629699028, now seen corresponding path program 11 times [2020-01-16 18:31:14,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:14,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718193211] [2020-01-16 18:31:14,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:14,755 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:31:14,882 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:31:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:14,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718193211] [2020-01-16 18:31:14,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:14,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:14,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078622473] [2020-01-16 18:31:14,891 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:14,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:14,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:14,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:14,891 INFO L87 Difference]: Start difference. First operand 1577 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:31:15,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:15,106 INFO L93 Difference]: Finished difference Result 3001 states and 11913 transitions. [2020-01-16 18:31:15,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:15,107 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:15,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:15,115 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:31:15,115 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:31:15,115 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 18:31:15,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:31:15,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1583. [2020-01-16 18:31:15,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:31:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7101 transitions. [2020-01-16 18:31:15,184 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7101 transitions. Word has length 28 [2020-01-16 18:31:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:15,185 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7101 transitions. [2020-01-16 18:31:15,185 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:15,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7101 transitions. [2020-01-16 18:31:15,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:15,187 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:15,187 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:15,187 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 18:31:15,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:15,188 INFO L82 PathProgramCache]: Analyzing trace with hash -140294032, now seen corresponding path program 12 times [2020-01-16 18:31:15,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:15,188 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960995622] [2020-01-16 18:31:15,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:15,809 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 18:31:15,809 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960995622] [2020-01-16 18:31:15,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:15,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:15,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411961516] [2020-01-16 18:31:15,810 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:15,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:15,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:15,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:15,811 INFO L87 Difference]: Start difference. First operand 1583 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:31:16,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:16,031 INFO L93 Difference]: Finished difference Result 3003 states and 11911 transitions. [2020-01-16 18:31:16,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:16,032 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:16,039 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:31:16,039 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:31:16,039 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 18:31:16,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:31:16,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1572. [2020-01-16 18:31:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:31:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7076 transitions. [2020-01-16 18:31:16,109 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7076 transitions. Word has length 28 [2020-01-16 18:31:16,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:16,109 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7076 transitions. [2020-01-16 18:31:16,109 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:16,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7076 transitions. [2020-01-16 18:31:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:16,112 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:16,112 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:16,112 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 18:31:16,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:16,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1393213296, now seen corresponding path program 13 times [2020-01-16 18:31:16,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:16,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100456087] [2020-01-16 18:31:16,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:16,749 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:31:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:16,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100456087] [2020-01-16 18:31:16,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:16,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:16,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766799521] [2020-01-16 18:31:16,758 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:16,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:16,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:16,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:16,759 INFO L87 Difference]: Start difference. First operand 1572 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:31:16,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:16,989 INFO L93 Difference]: Finished difference Result 3012 states and 11939 transitions. [2020-01-16 18:31:16,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:16,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:16,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:16,996 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:31:16,996 INFO L226 Difference]: Without dead ends: 2997 [2020-01-16 18:31:16,997 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 18:31:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2020-01-16 18:31:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1585. [2020-01-16 18:31:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:31:17,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7111 transitions. [2020-01-16 18:31:17,069 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7111 transitions. Word has length 28 [2020-01-16 18:31:17,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:17,069 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7111 transitions. [2020-01-16 18:31:17,069 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7111 transitions. [2020-01-16 18:31:17,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:17,073 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:17,073 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:17,073 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 18:31:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:17,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1412349004, now seen corresponding path program 14 times [2020-01-16 18:31:17,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:17,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8913656] [2020-01-16 18:31:17,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:17,539 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:31:17,666 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:31:17,674 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 18:31:17,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8913656] [2020-01-16 18:31:17,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:17,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:17,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408921908] [2020-01-16 18:31:17,676 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:17,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:17,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:17,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:17,676 INFO L87 Difference]: Start difference. First operand 1585 states and 7111 transitions. Second operand 11 states. [2020-01-16 18:31:17,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:17,898 INFO L93 Difference]: Finished difference Result 3017 states and 11943 transitions. [2020-01-16 18:31:17,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:17,899 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:17,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:17,906 INFO L225 Difference]: With dead ends: 3017 [2020-01-16 18:31:17,907 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:31:17,907 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 18:31:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:31:17,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1579. [2020-01-16 18:31:17,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:31:17,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7094 transitions. [2020-01-16 18:31:17,983 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7094 transitions. Word has length 28 [2020-01-16 18:31:17,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:17,984 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7094 transitions. [2020-01-16 18:31:17,984 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7094 transitions. [2020-01-16 18:31:17,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:17,988 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:17,988 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:17,988 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 18:31:17,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:17,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1290813042, now seen corresponding path program 15 times [2020-01-16 18:31:17,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:17,989 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267087548] [2020-01-16 18:31:17,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:18,653 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:18,661 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267087548] [2020-01-16 18:31:18,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:18,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:18,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79544883] [2020-01-16 18:31:18,661 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:18,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:18,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:18,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:18,662 INFO L87 Difference]: Start difference. First operand 1579 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:31:18,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:18,923 INFO L93 Difference]: Finished difference Result 3009 states and 11928 transitions. [2020-01-16 18:31:18,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:18,924 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:18,931 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:31:18,932 INFO L226 Difference]: Without dead ends: 2994 [2020-01-16 18:31:18,932 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 18:31:18,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-01-16 18:31:18,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1584. [2020-01-16 18:31:18,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:31:19,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7103 transitions. [2020-01-16 18:31:19,001 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7103 transitions. Word has length 28 [2020-01-16 18:31:19,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:19,001 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7103 transitions. [2020-01-16 18:31:19,001 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:19,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7103 transitions. [2020-01-16 18:31:19,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:19,004 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:19,004 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 18:31:19,004 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 18:31:19,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:19,004 INFO L82 PathProgramCache]: Analyzing trace with hash 943294452, now seen corresponding path program 16 times [2020-01-16 18:31:19,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:19,005 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464507002] [2020-01-16 18:31:19,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:19,625 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:19,632 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 18:31:19,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464507002] [2020-01-16 18:31:19,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:19,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:19,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544295720] [2020-01-16 18:31:19,633 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:19,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:19,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:19,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:19,634 INFO L87 Difference]: Start difference. First operand 1584 states and 7103 transitions. Second operand 11 states. [2020-01-16 18:31:19,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:19,881 INFO L93 Difference]: Finished difference Result 3012 states and 11929 transitions. [2020-01-16 18:31:19,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:19,882 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:19,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:19,888 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:31:19,888 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 18:31:19,889 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 18:31:19,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 18:31:19,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1579. [2020-01-16 18:31:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:31:19,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7089 transitions. [2020-01-16 18:31:19,958 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7089 transitions. Word has length 28 [2020-01-16 18:31:19,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:19,958 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7089 transitions. [2020-01-16 18:31:19,958 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:19,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7089 transitions. [2020-01-16 18:31:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:19,962 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:19,962 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:19,962 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 18:31:19,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:19,963 INFO L82 PathProgramCache]: Analyzing trace with hash -874493426, now seen corresponding path program 17 times [2020-01-16 18:31:19,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:19,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996296536] [2020-01-16 18:31:19,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:20,450 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:31:20,583 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:31:20,590 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 18:31:20,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996296536] [2020-01-16 18:31:20,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:20,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:20,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446532128] [2020-01-16 18:31:20,591 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:20,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:20,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:20,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:20,592 INFO L87 Difference]: Start difference. First operand 1579 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:31:20,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:20,824 INFO L93 Difference]: Finished difference Result 3024 states and 11953 transitions. [2020-01-16 18:31:20,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:20,824 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:20,831 INFO L225 Difference]: With dead ends: 3024 [2020-01-16 18:31:20,831 INFO L226 Difference]: Without dead ends: 3004 [2020-01-16 18:31:20,832 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 18:31:20,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2020-01-16 18:31:20,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 1589. [2020-01-16 18:31:20,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 18:31:20,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7106 transitions. [2020-01-16 18:31:20,901 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7106 transitions. Word has length 28 [2020-01-16 18:31:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:20,901 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7106 transitions. [2020-01-16 18:31:20,901 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7106 transitions. [2020-01-16 18:31:20,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:20,904 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:20,904 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 18:31:20,904 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 18:31:20,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:20,904 INFO L82 PathProgramCache]: Analyzing trace with hash -129790928, now seen corresponding path program 18 times [2020-01-16 18:31:20,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:20,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270080360] [2020-01-16 18:31:20,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:21,431 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:31:21,557 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:21,564 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270080360] [2020-01-16 18:31:21,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:21,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:21,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104186819] [2020-01-16 18:31:21,565 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:21,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:21,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:21,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:21,566 INFO L87 Difference]: Start difference. First operand 1589 states and 7106 transitions. Second operand 11 states. [2020-01-16 18:31:21,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:21,814 INFO L93 Difference]: Finished difference Result 3022 states and 11941 transitions. [2020-01-16 18:31:21,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:21,815 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:21,822 INFO L225 Difference]: With dead ends: 3022 [2020-01-16 18:31:21,823 INFO L226 Difference]: Without dead ends: 2987 [2020-01-16 18:31:21,823 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 18:31:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-01-16 18:31:21,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1572. [2020-01-16 18:31:21,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:31:21,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7069 transitions. [2020-01-16 18:31:21,889 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7069 transitions. Word has length 28 [2020-01-16 18:31:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:21,889 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7069 transitions. [2020-01-16 18:31:21,889 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:21,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7069 transitions. [2020-01-16 18:31:21,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:21,891 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:21,892 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 18:31:21,892 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 18:31:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:21,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2146548398, now seen corresponding path program 19 times [2020-01-16 18:31:21,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:21,892 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315723578] [2020-01-16 18:31:21,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:22,581 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:22,588 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 18:31:22,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315723578] [2020-01-16 18:31:22,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:22,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:22,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90475850] [2020-01-16 18:31:22,589 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:22,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:22,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:22,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:22,590 INFO L87 Difference]: Start difference. First operand 1572 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:31:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:22,831 INFO L93 Difference]: Finished difference Result 3019 states and 11951 transitions. [2020-01-16 18:31:22,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:22,832 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:22,839 INFO L225 Difference]: With dead ends: 3019 [2020-01-16 18:31:22,840 INFO L226 Difference]: Without dead ends: 3003 [2020-01-16 18:31:22,840 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 18:31:22,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2020-01-16 18:31:22,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 1587. [2020-01-16 18:31:22,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:31:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7110 transitions. [2020-01-16 18:31:22,906 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7110 transitions. Word has length 28 [2020-01-16 18:31:22,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:22,906 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7110 transitions. [2020-01-16 18:31:22,906 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:22,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7110 transitions. [2020-01-16 18:31:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:22,909 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:22,909 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 18:31:22,909 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 18:31:22,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:22,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1401845900, now seen corresponding path program 20 times [2020-01-16 18:31:22,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:22,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235184327] [2020-01-16 18:31:22,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:23,434 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:31:23,560 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:23,567 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 18:31:23,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235184327] [2020-01-16 18:31:23,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:23,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:23,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152204652] [2020-01-16 18:31:23,568 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:23,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:23,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:23,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:23,568 INFO L87 Difference]: Start difference. First operand 1587 states and 7110 transitions. Second operand 11 states. [2020-01-16 18:31:23,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:23,758 INFO L93 Difference]: Finished difference Result 3023 states and 11952 transitions. [2020-01-16 18:31:23,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:23,758 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:23,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:23,764 INFO L225 Difference]: With dead ends: 3023 [2020-01-16 18:31:23,764 INFO L226 Difference]: Without dead ends: 2996 [2020-01-16 18:31:23,765 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 18:31:23,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2020-01-16 18:31:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 1580. [2020-01-16 18:31:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:31:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7090 transitions. [2020-01-16 18:31:23,832 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7090 transitions. Word has length 28 [2020-01-16 18:31:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:23,832 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7090 transitions. [2020-01-16 18:31:23,832 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7090 transitions. [2020-01-16 18:31:23,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:23,835 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:23,835 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 18:31:23,835 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 18:31:23,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:23,835 INFO L82 PathProgramCache]: Analyzing trace with hash -535607440, now seen corresponding path program 21 times [2020-01-16 18:31:23,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:23,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805515042] [2020-01-16 18:31:23,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:24,419 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:31:24,426 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 18:31:24,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805515042] [2020-01-16 18:31:24,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:24,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:24,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781652867] [2020-01-16 18:31:24,427 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:24,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:24,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:24,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:24,427 INFO L87 Difference]: Start difference. First operand 1580 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:31:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:24,691 INFO L93 Difference]: Finished difference Result 3016 states and 11939 transitions. [2020-01-16 18:31:24,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:24,692 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:24,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:24,699 INFO L225 Difference]: With dead ends: 3016 [2020-01-16 18:31:24,699 INFO L226 Difference]: Without dead ends: 3000 [2020-01-16 18:31:24,700 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 18:31:24,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-01-16 18:31:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1586. [2020-01-16 18:31:24,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:31:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7101 transitions. [2020-01-16 18:31:24,776 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7101 transitions. Word has length 28 [2020-01-16 18:31:24,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:24,777 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7101 transitions. [2020-01-16 18:31:24,777 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:24,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7101 transitions. [2020-01-16 18:31:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:24,780 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:24,780 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 18:31:24,781 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 18:31:24,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:24,781 INFO L82 PathProgramCache]: Analyzing trace with hash 953797556, now seen corresponding path program 22 times [2020-01-16 18:31:24,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:24,781 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917092380] [2020-01-16 18:31:24,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:25,429 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:31:25,436 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 18:31:25,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917092380] [2020-01-16 18:31:25,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:25,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:25,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043974328] [2020-01-16 18:31:25,437 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:25,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:25,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:25,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:25,438 INFO L87 Difference]: Start difference. First operand 1586 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:31:25,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:25,642 INFO L93 Difference]: Finished difference Result 3018 states and 11937 transitions. [2020-01-16 18:31:25,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:25,643 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:25,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:25,651 INFO L225 Difference]: With dead ends: 3018 [2020-01-16 18:31:25,651 INFO L226 Difference]: Without dead ends: 2994 [2020-01-16 18:31:25,651 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 18:31:25,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-01-16 18:31:25,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1580. [2020-01-16 18:31:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:31:25,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7084 transitions. [2020-01-16 18:31:25,729 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7084 transitions. Word has length 28 [2020-01-16 18:31:25,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:25,730 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7084 transitions. [2020-01-16 18:31:25,730 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:25,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7084 transitions. [2020-01-16 18:31:25,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:25,733 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:25,733 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:25,733 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 18:31:25,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:25,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1820036016, now seen corresponding path program 23 times [2020-01-16 18:31:25,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:25,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707213945] [2020-01-16 18:31:25,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:26,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707213945] [2020-01-16 18:31:26,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:26,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:26,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524067123] [2020-01-16 18:31:26,358 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:26,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:26,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:26,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:26,358 INFO L87 Difference]: Start difference. First operand 1580 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:31:26,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:26,545 INFO L93 Difference]: Finished difference Result 3028 states and 11956 transitions. [2020-01-16 18:31:26,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:26,546 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:26,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:26,554 INFO L225 Difference]: With dead ends: 3028 [2020-01-16 18:31:26,554 INFO L226 Difference]: Without dead ends: 3008 [2020-01-16 18:31:26,554 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 18:31:26,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-01-16 18:31:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1590. [2020-01-16 18:31:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:31:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7101 transitions. [2020-01-16 18:31:26,621 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7101 transitions. Word has length 28 [2020-01-16 18:31:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:26,622 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7101 transitions. [2020-01-16 18:31:26,622 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:26,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7101 transitions. [2020-01-16 18:31:26,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:26,624 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:26,624 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 18:31:26,624 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 18:31:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:26,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1730228782, now seen corresponding path program 24 times [2020-01-16 18:31:26,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:26,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960723251] [2020-01-16 18:31:26,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:27,137 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:31:27,268 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:31:27,275 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 18:31:27,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960723251] [2020-01-16 18:31:27,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:27,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:27,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94083342] [2020-01-16 18:31:27,276 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:27,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:27,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:27,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:27,278 INFO L87 Difference]: Start difference. First operand 1590 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:31:27,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:27,550 INFO L93 Difference]: Finished difference Result 3026 states and 11944 transitions. [2020-01-16 18:31:27,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:27,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:27,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:27,559 INFO L225 Difference]: With dead ends: 3026 [2020-01-16 18:31:27,559 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:31:27,559 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 18:31:27,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:31:27,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1565. [2020-01-16 18:31:27,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:31:27,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7049 transitions. [2020-01-16 18:31:27,625 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7049 transitions. Word has length 28 [2020-01-16 18:31:27,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:27,625 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7049 transitions. [2020-01-16 18:31:27,626 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:27,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7049 transitions. [2020-01-16 18:31:27,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:27,628 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:27,628 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:27,628 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 18:31:27,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:27,628 INFO L82 PathProgramCache]: Analyzing trace with hash 582955646, now seen corresponding path program 25 times [2020-01-16 18:31:27,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:27,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463221657] [2020-01-16 18:31:27,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:28,104 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:31:28,231 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:31:28,239 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 18:31:28,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463221657] [2020-01-16 18:31:28,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:28,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:28,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85954474] [2020-01-16 18:31:28,240 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:28,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:28,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:28,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:28,240 INFO L87 Difference]: Start difference. First operand 1565 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:31:28,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:28,473 INFO L93 Difference]: Finished difference Result 2995 states and 11908 transitions. [2020-01-16 18:31:28,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:28,473 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:28,481 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 18:31:28,481 INFO L226 Difference]: Without dead ends: 2980 [2020-01-16 18:31:28,481 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:31:28,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-01-16 18:31:28,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1582. [2020-01-16 18:31:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:31:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7108 transitions. [2020-01-16 18:31:28,548 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7108 transitions. Word has length 28 [2020-01-16 18:31:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:28,549 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7108 transitions. [2020-01-16 18:31:28,549 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7108 transitions. [2020-01-16 18:31:28,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:28,552 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:28,552 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 18:31:28,552 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 18:31:28,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:28,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1327658144, now seen corresponding path program 26 times [2020-01-16 18:31:28,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:28,552 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690875463] [2020-01-16 18:31:28,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:29,178 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:29,186 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 18:31:29,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690875463] [2020-01-16 18:31:29,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:29,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:29,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454556152] [2020-01-16 18:31:29,186 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:29,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:29,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:29,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:29,187 INFO L87 Difference]: Start difference. First operand 1582 states and 7108 transitions. Second operand 11 states. [2020-01-16 18:31:29,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:29,388 INFO L93 Difference]: Finished difference Result 2996 states and 11905 transitions. [2020-01-16 18:31:29,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:29,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:29,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:29,396 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:31:29,396 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:31:29,397 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 18:31:29,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:31:29,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1577. [2020-01-16 18:31:29,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:31:29,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7094 transitions. [2020-01-16 18:31:29,469 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7094 transitions. Word has length 28 [2020-01-16 18:31:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:29,470 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7094 transitions. [2020-01-16 18:31:29,470 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:29,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7094 transitions. [2020-01-16 18:31:29,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:29,473 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:29,473 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 18:31:29,473 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 18:31:29,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:29,474 INFO L82 PathProgramCache]: Analyzing trace with hash -2101070692, now seen corresponding path program 27 times [2020-01-16 18:31:29,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:29,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815290761] [2020-01-16 18:31:29,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:29,994 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:31:30,123 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:31:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:30,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815290761] [2020-01-16 18:31:30,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:30,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:30,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846823595] [2020-01-16 18:31:30,132 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:30,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:30,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:30,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:30,133 INFO L87 Difference]: Start difference. First operand 1577 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:31:30,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:30,398 INFO L93 Difference]: Finished difference Result 3000 states and 11912 transitions. [2020-01-16 18:31:30,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:30,399 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:30,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:30,407 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 18:31:30,407 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:31:30,408 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 18:31:30,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:31:30,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1583. [2020-01-16 18:31:30,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:31:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7105 transitions. [2020-01-16 18:31:30,522 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7105 transitions. Word has length 28 [2020-01-16 18:31:30,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:30,522 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7105 transitions. [2020-01-16 18:31:30,522 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:30,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7105 transitions. [2020-01-16 18:31:30,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:30,526 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:30,526 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 18:31:30,526 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 18:31:30,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:30,527 INFO L82 PathProgramCache]: Analyzing trace with hash -611665696, now seen corresponding path program 28 times [2020-01-16 18:31:30,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:30,527 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391055915] [2020-01-16 18:31:30,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:31,192 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:31:31,199 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 18:31:31,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391055915] [2020-01-16 18:31:31,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:31,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:31,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781139550] [2020-01-16 18:31:31,200 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:31,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:31,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:31,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:31,200 INFO L87 Difference]: Start difference. First operand 1583 states and 7105 transitions. Second operand 11 states. [2020-01-16 18:31:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:31,399 INFO L93 Difference]: Finished difference Result 3005 states and 11916 transitions. [2020-01-16 18:31:31,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:31,400 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:31,407 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:31:31,407 INFO L226 Difference]: Without dead ends: 2979 [2020-01-16 18:31:31,407 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 18:31:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2020-01-16 18:31:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 1577. [2020-01-16 18:31:31,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:31:31,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7088 transitions. [2020-01-16 18:31:31,474 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7088 transitions. Word has length 28 [2020-01-16 18:31:31,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:31,474 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7088 transitions. [2020-01-16 18:31:31,474 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7088 transitions. [2020-01-16 18:31:31,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:31,477 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:31,477 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 18:31:31,477 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 18:31:31,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:31,477 INFO L82 PathProgramCache]: Analyzing trace with hash 254572764, now seen corresponding path program 29 times [2020-01-16 18:31:31,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:31,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284668252] [2020-01-16 18:31:31,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:31,941 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 25 [2020-01-16 18:31:32,110 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-01-16 18:31:32,249 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:32,256 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 18:31:32,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284668252] [2020-01-16 18:31:32,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:32,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:32,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794346762] [2020-01-16 18:31:32,260 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:32,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:32,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:32,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:32,261 INFO L87 Difference]: Start difference. First operand 1577 states and 7088 transitions. Second operand 11 states. [2020-01-16 18:31:32,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:32,457 INFO L93 Difference]: Finished difference Result 3003 states and 11913 transitions. [2020-01-16 18:31:32,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:32,457 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:32,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:32,463 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:31:32,463 INFO L226 Difference]: Without dead ends: 2987 [2020-01-16 18:31:32,464 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 18:31:32,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-01-16 18:31:32,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1584. [2020-01-16 18:31:32,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:31:32,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7101 transitions. [2020-01-16 18:31:32,530 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7101 transitions. Word has length 28 [2020-01-16 18:31:32,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:32,530 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7101 transitions. [2020-01-16 18:31:32,530 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:32,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7101 transitions. [2020-01-16 18:31:32,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:32,533 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:32,533 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:32,533 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 18:31:32,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:32,533 INFO L82 PathProgramCache]: Analyzing trace with hash 999275262, now seen corresponding path program 30 times [2020-01-16 18:31:32,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:32,534 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830473323] [2020-01-16 18:31:32,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:33,045 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 18:31:33,176 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:33,183 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 18:31:33,183 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830473323] [2020-01-16 18:31:33,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:33,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:33,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382156029] [2020-01-16 18:31:33,184 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:33,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:33,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:33,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:33,184 INFO L87 Difference]: Start difference. First operand 1584 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:31:33,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:33,370 INFO L93 Difference]: Finished difference Result 3007 states and 11914 transitions. [2020-01-16 18:31:33,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:33,371 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:33,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:33,378 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 18:31:33,378 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:31:33,379 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 18:31:33,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:31:33,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1571. [2020-01-16 18:31:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:31:33,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7071 transitions. [2020-01-16 18:31:33,445 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7071 transitions. Word has length 28 [2020-01-16 18:31:33,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:33,445 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7071 transitions. [2020-01-16 18:31:33,445 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:33,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7071 transitions. [2020-01-16 18:31:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:33,447 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:33,447 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 18:31:33,447 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 18:31:33,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:33,448 INFO L82 PathProgramCache]: Analyzing trace with hash -242257480, now seen corresponding path program 31 times [2020-01-16 18:31:33,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:33,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727480711] [2020-01-16 18:31:33,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:33,909 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:31:34,034 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:31:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:34,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727480711] [2020-01-16 18:31:34,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:34,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:34,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765495603] [2020-01-16 18:31:34,043 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:34,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:34,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:34,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:34,044 INFO L87 Difference]: Start difference. First operand 1571 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:31:34,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:34,268 INFO L93 Difference]: Finished difference Result 2989 states and 11890 transitions. [2020-01-16 18:31:34,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:34,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:34,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:34,276 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 18:31:34,276 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:31:34,277 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 18:31:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:31:34,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1581. [2020-01-16 18:31:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:31:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7099 transitions. [2020-01-16 18:31:34,343 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7099 transitions. Word has length 28 [2020-01-16 18:31:34,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:34,344 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7099 transitions. [2020-01-16 18:31:34,344 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:34,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7099 transitions. [2020-01-16 18:31:34,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:34,346 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:34,346 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 18:31:34,346 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 18:31:34,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:34,346 INFO L82 PathProgramCache]: Analyzing trace with hash 502445018, now seen corresponding path program 32 times [2020-01-16 18:31:34,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:34,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233591573] [2020-01-16 18:31:34,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:34,962 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:34,969 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 18:31:34,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233591573] [2020-01-16 18:31:34,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:34,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:34,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223433438] [2020-01-16 18:31:34,970 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:34,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:34,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:34,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:34,971 INFO L87 Difference]: Start difference. First operand 1581 states and 7099 transitions. Second operand 11 states. [2020-01-16 18:31:35,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:35,178 INFO L93 Difference]: Finished difference Result 2990 states and 11887 transitions. [2020-01-16 18:31:35,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:35,178 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:35,186 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:31:35,186 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 18:31:35,186 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 18:31:35,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 18:31:35,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1576. [2020-01-16 18:31:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:31:35,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7085 transitions. [2020-01-16 18:31:35,281 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7085 transitions. Word has length 28 [2020-01-16 18:31:35,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:35,282 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7085 transitions. [2020-01-16 18:31:35,282 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:35,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7085 transitions. [2020-01-16 18:31:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:35,284 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:35,284 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 18:31:35,284 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 18:31:35,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:35,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1850572662, now seen corresponding path program 33 times [2020-01-16 18:31:35,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:35,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459914106] [2020-01-16 18:31:35,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:35,916 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:31:35,925 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 18:31:35,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459914106] [2020-01-16 18:31:35,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:35,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:35,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629288524] [2020-01-16 18:31:35,926 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:35,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:35,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:35,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:35,926 INFO L87 Difference]: Start difference. First operand 1576 states and 7085 transitions. Second operand 11 states. [2020-01-16 18:31:36,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:36,178 INFO L93 Difference]: Finished difference Result 2990 states and 11887 transitions. [2020-01-16 18:31:36,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:36,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:36,187 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:31:36,187 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:31:36,187 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 18:31:36,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:31:36,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1581. [2020-01-16 18:31:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:31:36,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7094 transitions. [2020-01-16 18:31:36,255 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7094 transitions. Word has length 28 [2020-01-16 18:31:36,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:36,255 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7094 transitions. [2020-01-16 18:31:36,255 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:36,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7094 transitions. [2020-01-16 18:31:36,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:36,258 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:36,258 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 18:31:36,258 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 18:31:36,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:36,258 INFO L82 PathProgramCache]: Analyzing trace with hash -187919974, now seen corresponding path program 34 times [2020-01-16 18:31:36,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:36,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751884968] [2020-01-16 18:31:36,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:36,877 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:31:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:36,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751884968] [2020-01-16 18:31:36,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:36,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:36,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095670780] [2020-01-16 18:31:36,885 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:36,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:36,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:36,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:36,886 INFO L87 Difference]: Start difference. First operand 1581 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:31:37,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:37,094 INFO L93 Difference]: Finished difference Result 2992 states and 11886 transitions. [2020-01-16 18:31:37,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:37,095 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:37,102 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:31:37,102 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:31:37,102 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 18:31:37,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:31:37,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1576. [2020-01-16 18:31:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:31:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7080 transitions. [2020-01-16 18:31:37,169 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7080 transitions. Word has length 28 [2020-01-16 18:31:37,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:37,169 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7080 transitions. [2020-01-16 18:31:37,169 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:37,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7080 transitions. [2020-01-16 18:31:37,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:37,172 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:37,172 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:37,172 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 18:31:37,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:37,172 INFO L82 PathProgramCache]: Analyzing trace with hash 505070794, now seen corresponding path program 35 times [2020-01-16 18:31:37,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:37,173 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105231634] [2020-01-16 18:31:37,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:37,806 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:37,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105231634] [2020-01-16 18:31:37,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:37,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:37,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760156841] [2020-01-16 18:31:37,815 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:37,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:37,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:37,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:37,816 INFO L87 Difference]: Start difference. First operand 1576 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:31:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:38,041 INFO L93 Difference]: Finished difference Result 2993 states and 11889 transitions. [2020-01-16 18:31:38,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:38,042 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:38,049 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:31:38,049 INFO L226 Difference]: Without dead ends: 2977 [2020-01-16 18:31:38,049 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 18:31:38,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-01-16 18:31:38,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1582. [2020-01-16 18:31:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:31:38,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7091 transitions. [2020-01-16 18:31:38,118 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7091 transitions. Word has length 28 [2020-01-16 18:31:38,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:38,119 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7091 transitions. [2020-01-16 18:31:38,119 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:38,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7091 transitions. [2020-01-16 18:31:38,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:38,122 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:38,122 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 18:31:38,122 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 18:31:38,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:38,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1423020984, now seen corresponding path program 36 times [2020-01-16 18:31:38,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:38,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542407747] [2020-01-16 18:31:38,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:38,626 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:31:38,753 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:38,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542407747] [2020-01-16 18:31:38,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:38,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:38,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560395094] [2020-01-16 18:31:38,762 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:38,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:38,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:38,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:38,762 INFO L87 Difference]: Start difference. First operand 1582 states and 7091 transitions. Second operand 11 states. [2020-01-16 18:31:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:39,067 INFO L93 Difference]: Finished difference Result 2994 states and 11885 transitions. [2020-01-16 18:31:39,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:39,068 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:39,075 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 18:31:39,076 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:31:39,076 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 18:31:39,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:31:39,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1571. [2020-01-16 18:31:39,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:31:39,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7066 transitions. [2020-01-16 18:31:39,144 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7066 transitions. Word has length 28 [2020-01-16 18:31:39,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:39,144 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7066 transitions. [2020-01-16 18:31:39,144 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7066 transitions. [2020-01-16 18:31:39,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:39,147 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:39,147 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:39,147 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 18:31:39,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:39,147 INFO L82 PathProgramCache]: Analyzing trace with hash -231754376, now seen corresponding path program 37 times [2020-01-16 18:31:39,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:39,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272934062] [2020-01-16 18:31:39,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:39,631 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:31:39,790 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:31:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:39,797 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272934062] [2020-01-16 18:31:39,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:39,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:39,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376483331] [2020-01-16 18:31:39,798 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:39,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:39,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:39,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:39,798 INFO L87 Difference]: Start difference. First operand 1571 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:31:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:40,088 INFO L93 Difference]: Finished difference Result 3002 states and 11911 transitions. [2020-01-16 18:31:40,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:40,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:40,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:40,097 INFO L225 Difference]: With dead ends: 3002 [2020-01-16 18:31:40,097 INFO L226 Difference]: Without dead ends: 2987 [2020-01-16 18:31:40,097 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 18:31:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-01-16 18:31:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1583. [2020-01-16 18:31:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:31:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7099 transitions. [2020-01-16 18:31:40,167 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7099 transitions. Word has length 28 [2020-01-16 18:31:40,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:40,167 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7099 transitions. [2020-01-16 18:31:40,167 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:40,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7099 transitions. [2020-01-16 18:31:40,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:40,170 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:40,170 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:40,170 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 18:31:40,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:40,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1257650620, now seen corresponding path program 38 times [2020-01-16 18:31:40,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:40,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329709851] [2020-01-16 18:31:40,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:40,665 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:31:40,795 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:31:40,802 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 18:31:40,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329709851] [2020-01-16 18:31:40,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:40,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:40,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247717845] [2020-01-16 18:31:40,803 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:40,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:40,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:40,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:40,804 INFO L87 Difference]: Start difference. First operand 1583 states and 7099 transitions. Second operand 11 states. [2020-01-16 18:31:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:40,983 INFO L93 Difference]: Finished difference Result 3007 states and 11915 transitions. [2020-01-16 18:31:40,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:40,984 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:40,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:40,992 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 18:31:40,992 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:31:40,992 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 18:31:41,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:31:41,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1577. [2020-01-16 18:31:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:31:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7082 transitions. [2020-01-16 18:31:41,061 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7082 transitions. Word has length 28 [2020-01-16 18:31:41,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:41,061 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7082 transitions. [2020-01-16 18:31:41,061 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:41,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7082 transitions. [2020-01-16 18:31:41,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:41,063 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:41,064 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 18:31:41,064 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 18:31:41,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:41,064 INFO L82 PathProgramCache]: Analyzing trace with hash 843956780, now seen corresponding path program 39 times [2020-01-16 18:31:41,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:41,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068494454] [2020-01-16 18:31:41,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:41,705 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:31:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:41,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068494454] [2020-01-16 18:31:41,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:41,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:41,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772322522] [2020-01-16 18:31:41,713 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:41,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:41,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:41,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:41,714 INFO L87 Difference]: Start difference. First operand 1577 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:31:41,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:41,929 INFO L93 Difference]: Finished difference Result 2998 states and 11898 transitions. [2020-01-16 18:31:41,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:41,930 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:41,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:41,938 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 18:31:41,938 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:31:41,938 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 18:31:41,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:31:42,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1582. [2020-01-16 18:31:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:31:42,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7091 transitions. [2020-01-16 18:31:42,006 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7091 transitions. Word has length 28 [2020-01-16 18:31:42,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:42,006 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7091 transitions. [2020-01-16 18:31:42,006 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:42,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7091 transitions. [2020-01-16 18:31:42,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:42,008 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:42,008 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 18:31:42,009 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 18:31:42,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:42,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1788357828, now seen corresponding path program 40 times [2020-01-16 18:31:42,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:42,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579737424] [2020-01-16 18:31:42,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:42,608 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:31:42,615 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 18:31:42,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579737424] [2020-01-16 18:31:42,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:42,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:42,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963336688] [2020-01-16 18:31:42,616 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:42,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:42,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:42,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:42,616 INFO L87 Difference]: Start difference. First operand 1582 states and 7091 transitions. Second operand 11 states. [2020-01-16 18:31:42,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:42,855 INFO L93 Difference]: Finished difference Result 3000 states and 11897 transitions. [2020-01-16 18:31:42,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:42,855 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:42,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:42,862 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 18:31:42,862 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:31:42,864 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 18:31:42,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:31:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1577. [2020-01-16 18:31:42,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:31:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7077 transitions. [2020-01-16 18:31:42,933 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7077 transitions. Word has length 28 [2020-01-16 18:31:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:42,934 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7077 transitions. [2020-01-16 18:31:42,934 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:42,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7077 transitions. [2020-01-16 18:31:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:42,936 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:42,936 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:42,936 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 18:31:42,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:42,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1260276396, now seen corresponding path program 41 times [2020-01-16 18:31:42,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:42,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435715177] [2020-01-16 18:31:42,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:43,462 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:31:43,590 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:31:43,597 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 18:31:43,598 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435715177] [2020-01-16 18:31:43,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:43,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:43,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877197678] [2020-01-16 18:31:43,598 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:43,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:43,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:43,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:43,599 INFO L87 Difference]: Start difference. First operand 1577 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:31:43,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:43,848 INFO L93 Difference]: Finished difference Result 3011 states and 11919 transitions. [2020-01-16 18:31:43,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:43,849 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:43,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:43,857 INFO L225 Difference]: With dead ends: 3011 [2020-01-16 18:31:43,857 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:31:43,857 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 18:31:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:31:43,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1585. [2020-01-16 18:31:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:31:43,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7091 transitions. [2020-01-16 18:31:43,924 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7091 transitions. Word has length 28 [2020-01-16 18:31:43,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:43,924 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7091 transitions. [2020-01-16 18:31:43,924 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:43,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7091 transitions. [2020-01-16 18:31:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:43,927 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:43,927 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 18:31:43,927 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 18:31:43,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:43,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1433524088, now seen corresponding path program 42 times [2020-01-16 18:31:43,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:43,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701129483] [2020-01-16 18:31:43,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:44,408 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2020-01-16 18:31:44,534 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:31:44,540 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 18:31:44,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701129483] [2020-01-16 18:31:44,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:44,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:44,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324037840] [2020-01-16 18:31:44,541 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:44,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:44,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:44,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:44,542 INFO L87 Difference]: Start difference. First operand 1585 states and 7091 transitions. Second operand 11 states. [2020-01-16 18:31:44,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:44,842 INFO L93 Difference]: Finished difference Result 3008 states and 11906 transitions. [2020-01-16 18:31:44,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:44,843 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:44,850 INFO L225 Difference]: With dead ends: 3008 [2020-01-16 18:31:44,850 INFO L226 Difference]: Without dead ends: 2977 [2020-01-16 18:31:44,850 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 18:31:44,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-01-16 18:31:44,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1571. [2020-01-16 18:31:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:31:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7060 transitions. [2020-01-16 18:31:44,917 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7060 transitions. Word has length 28 [2020-01-16 18:31:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:44,918 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7060 transitions. [2020-01-16 18:31:44,918 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7060 transitions. [2020-01-16 18:31:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:44,920 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:44,920 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:44,920 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 18:31:44,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:44,921 INFO L82 PathProgramCache]: Analyzing trace with hash 523451226, now seen corresponding path program 43 times [2020-01-16 18:31:44,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:44,921 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861980875] [2020-01-16 18:31:44,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:45,432 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-01-16 18:31:45,563 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:45,570 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 18:31:45,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861980875] [2020-01-16 18:31:45,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:45,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:45,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620066969] [2020-01-16 18:31:45,571 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:45,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:45,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:45,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:45,571 INFO L87 Difference]: Start difference. First operand 1571 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:31:45,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:45,855 INFO L93 Difference]: Finished difference Result 3009 states and 11924 transitions. [2020-01-16 18:31:45,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:45,856 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:45,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:45,865 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:31:45,866 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 18:31:45,866 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 18:31:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 18:31:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1585. [2020-01-16 18:31:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:31:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7099 transitions. [2020-01-16 18:31:45,933 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7099 transitions. Word has length 28 [2020-01-16 18:31:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:45,933 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7099 transitions. [2020-01-16 18:31:45,933 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7099 transitions. [2020-01-16 18:31:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:45,936 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:45,936 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:45,936 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 18:31:45,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:45,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1268153724, now seen corresponding path program 44 times [2020-01-16 18:31:45,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:45,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272106174] [2020-01-16 18:31:45,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:46,440 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 18:31:46,568 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:46,576 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272106174] [2020-01-16 18:31:46,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:46,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:46,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449772702] [2020-01-16 18:31:46,577 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:46,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:46,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:46,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:46,577 INFO L87 Difference]: Start difference. First operand 1585 states and 7099 transitions. Second operand 11 states. [2020-01-16 18:31:46,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:46,837 INFO L93 Difference]: Finished difference Result 3013 states and 11925 transitions. [2020-01-16 18:31:46,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:46,837 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:46,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:46,845 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 18:31:46,845 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 18:31:46,846 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:31:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 18:31:46,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1578. [2020-01-16 18:31:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:31:46,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7079 transitions. [2020-01-16 18:31:46,914 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7079 transitions. Word has length 28 [2020-01-16 18:31:46,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:46,914 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7079 transitions. [2020-01-16 18:31:46,914 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:46,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7079 transitions. [2020-01-16 18:31:46,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:46,917 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:46,917 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:46,917 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 18:31:46,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:46,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1599162382, now seen corresponding path program 45 times [2020-01-16 18:31:46,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:46,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035392623] [2020-01-16 18:31:46,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:47,531 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:47,538 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 18:31:47,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035392623] [2020-01-16 18:31:47,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:47,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:47,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439600137] [2020-01-16 18:31:47,539 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:47,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:47,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:47,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:47,539 INFO L87 Difference]: Start difference. First operand 1578 states and 7079 transitions. Second operand 11 states. [2020-01-16 18:31:47,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:47,750 INFO L93 Difference]: Finished difference Result 3005 states and 11910 transitions. [2020-01-16 18:31:47,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:47,750 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:47,757 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:31:47,757 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 18:31:47,757 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 18:31:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 18:31:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1584. [2020-01-16 18:31:47,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:31:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7090 transitions. [2020-01-16 18:31:47,823 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7090 transitions. Word has length 28 [2020-01-16 18:31:47,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:47,823 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7090 transitions. [2020-01-16 18:31:47,824 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:47,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7090 transitions. [2020-01-16 18:31:47,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:47,826 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:47,826 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:47,826 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 18:31:47,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:47,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1777854724, now seen corresponding path program 46 times [2020-01-16 18:31:47,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:47,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461605743] [2020-01-16 18:31:47,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:48,438 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:48,446 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 18:31:48,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461605743] [2020-01-16 18:31:48,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:48,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:48,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549167306] [2020-01-16 18:31:48,447 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:48,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:48,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:48,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:48,447 INFO L87 Difference]: Start difference. First operand 1584 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:31:48,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:48,644 INFO L93 Difference]: Finished difference Result 3006 states and 11906 transitions. [2020-01-16 18:31:48,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:48,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:48,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:48,652 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:31:48,652 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:31:48,652 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 18:31:48,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:31:48,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1578. [2020-01-16 18:31:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:31:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7073 transitions. [2020-01-16 18:31:48,725 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7073 transitions. Word has length 28 [2020-01-16 18:31:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:48,725 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7073 transitions. [2020-01-16 18:31:48,726 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7073 transitions. [2020-01-16 18:31:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:48,729 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:48,729 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 18:31:48,729 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 18:31:48,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:48,730 INFO L82 PathProgramCache]: Analyzing trace with hash -340161458, now seen corresponding path program 47 times [2020-01-16 18:31:48,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:48,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164807637] [2020-01-16 18:31:48,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:49,247 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 18:31:49,377 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:49,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164807637] [2020-01-16 18:31:49,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:49,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:49,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733884560] [2020-01-16 18:31:49,385 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:49,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:49,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:49,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:49,385 INFO L87 Difference]: Start difference. First operand 1578 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:31:49,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:49,534 INFO L93 Difference]: Finished difference Result 3015 states and 11923 transitions. [2020-01-16 18:31:49,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:49,534 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:49,542 INFO L225 Difference]: With dead ends: 3015 [2020-01-16 18:31:49,543 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 18:31:49,543 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 18:31:49,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 18:31:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1586. [2020-01-16 18:31:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:31:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7087 transitions. [2020-01-16 18:31:49,611 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7087 transitions. Word has length 28 [2020-01-16 18:31:49,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:49,611 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7087 transitions. [2020-01-16 18:31:49,611 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:49,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7087 transitions. [2020-01-16 18:31:49,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:49,613 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:49,613 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 18:31:49,614 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 18:31:49,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:49,614 INFO L82 PathProgramCache]: Analyzing trace with hash -166913766, now seen corresponding path program 48 times [2020-01-16 18:31:49,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:49,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191304459] [2020-01-16 18:31:49,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:50,247 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:50,254 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 18:31:50,254 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191304459] [2020-01-16 18:31:50,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:50,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:50,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47210999] [2020-01-16 18:31:50,255 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:50,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:50,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:50,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:50,255 INFO L87 Difference]: Start difference. First operand 1586 states and 7087 transitions. Second operand 11 states. [2020-01-16 18:31:50,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:50,481 INFO L93 Difference]: Finished difference Result 3012 states and 11910 transitions. [2020-01-16 18:31:50,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:50,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:50,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:50,488 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:31:50,489 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:31:50,489 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 18:31:50,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:31:50,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1565. [2020-01-16 18:31:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:31:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7043 transitions. [2020-01-16 18:31:50,557 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7043 transitions. Word has length 28 [2020-01-16 18:31:50,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:50,557 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7043 transitions. [2020-01-16 18:31:50,557 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:50,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7043 transitions. [2020-01-16 18:31:50,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:50,559 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:50,560 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:50,560 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 18:31:50,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:50,560 INFO L82 PathProgramCache]: Analyzing trace with hash 15547412, now seen corresponding path program 49 times [2020-01-16 18:31:50,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:50,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280828066] [2020-01-16 18:31:50,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:51,044 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:31:51,173 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:51,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280828066] [2020-01-16 18:31:51,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:51,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:51,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815217486] [2020-01-16 18:31:51,180 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:51,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:51,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:51,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:51,181 INFO L87 Difference]: Start difference. First operand 1565 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:31:51,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:51,378 INFO L93 Difference]: Finished difference Result 2981 states and 11870 transitions. [2020-01-16 18:31:51,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:51,379 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:51,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:51,387 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:31:51,387 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:31:51,387 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 18:31:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:31:51,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1580. [2020-01-16 18:31:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:31:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7095 transitions. [2020-01-16 18:31:51,453 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7095 transitions. Word has length 28 [2020-01-16 18:31:51,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:51,453 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7095 transitions. [2020-01-16 18:31:51,453 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:51,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7095 transitions. [2020-01-16 18:31:51,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:51,455 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:51,455 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 18:31:51,456 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 18:31:51,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:51,456 INFO L82 PathProgramCache]: Analyzing trace with hash 760249910, now seen corresponding path program 50 times [2020-01-16 18:31:51,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:51,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106096298] [2020-01-16 18:31:51,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:51,930 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:31:52,060 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:31:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:52,067 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106096298] [2020-01-16 18:31:52,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:52,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:52,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484313477] [2020-01-16 18:31:52,068 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:52,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:52,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:52,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:52,069 INFO L87 Difference]: Start difference. First operand 1580 states and 7095 transitions. Second operand 11 states. [2020-01-16 18:31:52,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:52,268 INFO L93 Difference]: Finished difference Result 2982 states and 11867 transitions. [2020-01-16 18:31:52,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:52,268 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:52,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:52,275 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:31:52,275 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:31:52,276 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 18:31:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:31:52,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 18:31:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:31:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7081 transitions. [2020-01-16 18:31:52,342 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7081 transitions. Word has length 28 [2020-01-16 18:31:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:52,342 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7081 transitions. [2020-01-16 18:31:52,342 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7081 transitions. [2020-01-16 18:31:52,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:52,344 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:52,344 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:52,345 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 18:31:52,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:52,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1057537968, now seen corresponding path program 51 times [2020-01-16 18:31:52,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:52,345 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861866784] [2020-01-16 18:31:52,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:52,823 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:31:52,949 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:52,957 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861866784] [2020-01-16 18:31:52,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:52,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:52,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265683707] [2020-01-16 18:31:52,957 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:52,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:52,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:52,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:52,958 INFO L87 Difference]: Start difference. First operand 1575 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:31:53,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:53,157 INFO L93 Difference]: Finished difference Result 2983 states and 11869 transitions. [2020-01-16 18:31:53,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:53,157 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:53,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:53,165 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:31:53,165 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:31:53,166 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:31:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:31:53,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1580. [2020-01-16 18:31:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:31:53,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7090 transitions. [2020-01-16 18:31:53,234 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7090 transitions. Word has length 28 [2020-01-16 18:31:53,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:53,234 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7090 transitions. [2020-01-16 18:31:53,234 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:53,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7090 transitions. [2020-01-16 18:31:53,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:53,236 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:53,236 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:53,236 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 18:31:53,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:53,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1176569526, now seen corresponding path program 52 times [2020-01-16 18:31:53,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:53,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028337085] [2020-01-16 18:31:53,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:53,642 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2020-01-16 18:31:53,899 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:53,906 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 18:31:53,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028337085] [2020-01-16 18:31:53,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:53,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:53,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113171540] [2020-01-16 18:31:53,907 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:53,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:53,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:53,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:53,908 INFO L87 Difference]: Start difference. First operand 1580 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:31:54,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:54,103 INFO L93 Difference]: Finished difference Result 2986 states and 11870 transitions. [2020-01-16 18:31:54,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:54,104 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:54,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:54,111 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:31:54,111 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 18:31:54,111 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 18:31:54,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 18:31:54,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1575. [2020-01-16 18:31:54,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:31:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7076 transitions. [2020-01-16 18:31:54,179 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7076 transitions. Word has length 28 [2020-01-16 18:31:54,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:54,180 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7076 transitions. [2020-01-16 18:31:54,180 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:54,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7076 transitions. [2020-01-16 18:31:54,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:54,182 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:54,182 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:54,182 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 18:31:54,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:54,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1298105488, now seen corresponding path program 53 times [2020-01-16 18:31:54,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:54,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446301740] [2020-01-16 18:31:54,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:54,669 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:31:54,797 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:31:54,804 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 18:31:54,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446301740] [2020-01-16 18:31:54,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:54,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:54,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529236777] [2020-01-16 18:31:54,805 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:54,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:54,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:54,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:54,806 INFO L87 Difference]: Start difference. First operand 1575 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:31:54,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:54,996 INFO L93 Difference]: Finished difference Result 2986 states and 11871 transitions. [2020-01-16 18:31:54,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:54,997 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:54,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:55,004 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:31:55,004 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:31:55,005 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 18:31:55,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:31:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1581. [2020-01-16 18:31:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:31:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7087 transitions. [2020-01-16 18:31:55,071 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7087 transitions. Word has length 28 [2020-01-16 18:31:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:55,071 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7087 transitions. [2020-01-16 18:31:55,071 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:55,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7087 transitions. [2020-01-16 18:31:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:55,073 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:55,073 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:55,074 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 18:31:55,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:55,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1507456812, now seen corresponding path program 54 times [2020-01-16 18:31:55,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:55,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229953246] [2020-01-16 18:31:55,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:55,553 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:31:55,680 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:31:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:55,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229953246] [2020-01-16 18:31:55,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:55,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:55,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24180754] [2020-01-16 18:31:55,688 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:55,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:55,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:55,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:55,688 INFO L87 Difference]: Start difference. First operand 1581 states and 7087 transitions. Second operand 11 states. [2020-01-16 18:31:55,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:55,885 INFO L93 Difference]: Finished difference Result 2988 states and 11869 transitions. [2020-01-16 18:31:55,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:55,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:55,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:55,893 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:31:55,893 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:31:55,893 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 18:31:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:31:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1570. [2020-01-16 18:31:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:31:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7062 transitions. [2020-01-16 18:31:55,959 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7062 transitions. Word has length 28 [2020-01-16 18:31:55,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:55,960 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7062 transitions. [2020-01-16 18:31:55,960 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7062 transitions. [2020-01-16 18:31:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:55,962 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:55,962 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:55,962 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 18:31:55,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:55,963 INFO L82 PathProgramCache]: Analyzing trace with hash 603292734, now seen corresponding path program 55 times [2020-01-16 18:31:55,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:55,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112031548] [2020-01-16 18:31:55,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:56,592 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 31 [2020-01-16 18:31:56,599 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 18:31:56,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112031548] [2020-01-16 18:31:56,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:56,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:56,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859805425] [2020-01-16 18:31:56,600 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:56,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:56,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:56,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:56,601 INFO L87 Difference]: Start difference. First operand 1570 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:31:56,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:56,789 INFO L93 Difference]: Finished difference Result 2980 states and 11863 transitions. [2020-01-16 18:31:56,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:56,790 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:56,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:56,797 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:31:56,797 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:31:56,797 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 18:31:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:31:56,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1580. [2020-01-16 18:31:56,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:31:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7090 transitions. [2020-01-16 18:31:56,864 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7090 transitions. Word has length 28 [2020-01-16 18:31:56,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:56,864 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7090 transitions. [2020-01-16 18:31:56,864 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:56,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7090 transitions. [2020-01-16 18:31:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:56,867 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:56,867 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 18:31:56,867 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 18:31:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:56,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1347995232, now seen corresponding path program 56 times [2020-01-16 18:31:56,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:56,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798957902] [2020-01-16 18:31:56,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:57,489 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:31:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:57,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798957902] [2020-01-16 18:31:57,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:57,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:57,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667944088] [2020-01-16 18:31:57,498 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:57,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:57,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:57,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:57,498 INFO L87 Difference]: Start difference. First operand 1580 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:31:57,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:57,708 INFO L93 Difference]: Finished difference Result 2981 states and 11860 transitions. [2020-01-16 18:31:57,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:57,709 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:57,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:57,717 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:31:57,717 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:31:57,717 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:31:57,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:31:57,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1575. [2020-01-16 18:31:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:31:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7076 transitions. [2020-01-16 18:31:57,784 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7076 transitions. Word has length 28 [2020-01-16 18:31:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:57,784 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7076 transitions. [2020-01-16 18:31:57,784 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7076 transitions. [2020-01-16 18:31:57,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:57,787 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:57,787 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:57,787 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 18:31:57,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:57,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1005022448, now seen corresponding path program 57 times [2020-01-16 18:31:57,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:57,788 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156489991] [2020-01-16 18:31:57,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:58,309 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:31:58,436 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:58,444 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156489991] [2020-01-16 18:31:58,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:58,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:58,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065636064] [2020-01-16 18:31:58,445 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:58,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:58,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:58,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:58,445 INFO L87 Difference]: Start difference. First operand 1575 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:31:58,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:58,716 INFO L93 Difference]: Finished difference Result 2981 states and 11860 transitions. [2020-01-16 18:31:58,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:58,717 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:58,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:58,728 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:31:58,728 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:31:58,728 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 18:31:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:31:58,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1580. [2020-01-16 18:31:58,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:31:58,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7085 transitions. [2020-01-16 18:31:58,864 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7085 transitions. Word has length 28 [2020-01-16 18:31:58,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:58,865 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7085 transitions. [2020-01-16 18:31:58,865 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:58,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7085 transitions. [2020-01-16 18:31:58,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:58,868 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:58,868 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:58,869 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 18:31:58,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:58,869 INFO L82 PathProgramCache]: Analyzing trace with hash 657630240, now seen corresponding path program 58 times [2020-01-16 18:31:58,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:58,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899895100] [2020-01-16 18:31:58,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:59,491 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:31:59,498 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 18:31:59,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899895100] [2020-01-16 18:31:59,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:59,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:31:59,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165022355] [2020-01-16 18:31:59,499 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:31:59,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:59,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:31:59,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:31:59,500 INFO L87 Difference]: Start difference. First operand 1580 states and 7085 transitions. Second operand 11 states. [2020-01-16 18:31:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:59,697 INFO L93 Difference]: Finished difference Result 2983 states and 11859 transitions. [2020-01-16 18:31:59,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:31:59,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:31:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:59,706 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:31:59,706 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:31:59,706 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 18:31:59,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:31:59,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 18:31:59,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:31:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 18:31:59,774 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 18:31:59,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:59,775 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 18:31:59,775 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:31:59,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 18:31:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:31:59,777 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:59,777 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 18:31:59,777 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 18:31:59,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:59,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1350621008, now seen corresponding path program 59 times [2020-01-16 18:31:59,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:59,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907095061] [2020-01-16 18:31:59,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:00,385 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:32:00,392 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 18:32:00,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907095061] [2020-01-16 18:32:00,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:00,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:00,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729895386] [2020-01-16 18:32:00,393 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:00,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:00,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:00,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:00,394 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:32:00,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:00,592 INFO L93 Difference]: Finished difference Result 2984 states and 11862 transitions. [2020-01-16 18:32:00,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:00,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:00,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:00,600 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:32:00,600 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:32:00,600 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:32:00,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:32:00,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1581. [2020-01-16 18:32:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:32:00,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7082 transitions. [2020-01-16 18:32:00,667 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7082 transitions. Word has length 28 [2020-01-16 18:32:00,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:00,667 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7082 transitions. [2020-01-16 18:32:00,667 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:00,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7082 transitions. [2020-01-16 18:32:00,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:00,670 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:00,670 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 18:32:00,670 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 18:32:00,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:00,670 INFO L82 PathProgramCache]: Analyzing trace with hash -2026396098, now seen corresponding path program 60 times [2020-01-16 18:32:00,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:00,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837396071] [2020-01-16 18:32:00,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:01,156 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:32:01,283 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:32:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:01,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837396071] [2020-01-16 18:32:01,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:01,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:01,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126435397] [2020-01-16 18:32:01,291 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:01,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:01,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:01,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:01,292 INFO L87 Difference]: Start difference. First operand 1581 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:32:01,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:01,500 INFO L93 Difference]: Finished difference Result 2985 states and 11858 transitions. [2020-01-16 18:32:01,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:01,500 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:01,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:01,508 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:32:01,508 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:32:01,508 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 18:32:01,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:32:01,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1570. [2020-01-16 18:32:01,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:32:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7057 transitions. [2020-01-16 18:32:01,575 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7057 transitions. Word has length 28 [2020-01-16 18:32:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:01,575 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7057 transitions. [2020-01-16 18:32:01,575 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7057 transitions. [2020-01-16 18:32:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:01,577 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:01,577 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 18:32:01,577 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 18:32:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:01,578 INFO L82 PathProgramCache]: Analyzing trace with hash 624298942, now seen corresponding path program 61 times [2020-01-16 18:32:01,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:01,578 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025984119] [2020-01-16 18:32:01,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:02,053 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:32:02,185 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:02,193 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 18:32:02,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025984119] [2020-01-16 18:32:02,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:02,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:02,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102370106] [2020-01-16 18:32:02,194 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:02,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:02,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:02,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:02,194 INFO L87 Difference]: Start difference. First operand 1570 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:32:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:02,395 INFO L93 Difference]: Finished difference Result 2985 states and 11869 transitions. [2020-01-16 18:32:02,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:02,396 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:02,404 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:32:02,404 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:32:02,404 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 18:32:02,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:32:02,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1580. [2020-01-16 18:32:02,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:32:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7085 transitions. [2020-01-16 18:32:02,470 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7085 transitions. Word has length 28 [2020-01-16 18:32:02,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:02,471 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7085 transitions. [2020-01-16 18:32:02,471 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:02,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7085 transitions. [2020-01-16 18:32:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:02,473 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:02,473 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 18:32:02,473 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 18:32:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:02,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1436560860, now seen corresponding path program 62 times [2020-01-16 18:32:02,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:02,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020512133] [2020-01-16 18:32:02,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:03,129 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:03,135 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 18:32:03,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020512133] [2020-01-16 18:32:03,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:03,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:03,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057893307] [2020-01-16 18:32:03,136 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:03,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:03,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:03,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:03,137 INFO L87 Difference]: Start difference. First operand 1580 states and 7085 transitions. Second operand 11 states. [2020-01-16 18:32:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:03,340 INFO L93 Difference]: Finished difference Result 2988 states and 11870 transitions. [2020-01-16 18:32:03,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:03,341 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:03,348 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:32:03,349 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:32:03,349 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 18:32:03,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:32:03,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1575. [2020-01-16 18:32:03,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:32:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 18:32:03,415 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 18:32:03,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:03,416 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 18:32:03,416 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 18:32:03,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:03,418 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:03,418 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 18:32:03,418 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 18:32:03,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:03,418 INFO L82 PathProgramCache]: Analyzing trace with hash 89069140, now seen corresponding path program 63 times [2020-01-16 18:32:03,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:03,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070533318] [2020-01-16 18:32:03,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:04,034 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:04,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070533318] [2020-01-16 18:32:04,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:04,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:04,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777655302] [2020-01-16 18:32:04,042 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:04,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:04,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:04,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:04,042 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:32:04,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:04,238 INFO L93 Difference]: Finished difference Result 2984 states and 11862 transitions. [2020-01-16 18:32:04,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:04,238 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:04,246 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:32:04,247 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 18:32:04,247 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 18:32:04,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 18:32:04,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1580. [2020-01-16 18:32:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:32:04,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7080 transitions. [2020-01-16 18:32:04,314 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7080 transitions. Word has length 28 [2020-01-16 18:32:04,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:04,314 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7080 transitions. [2020-01-16 18:32:04,314 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7080 transitions. [2020-01-16 18:32:04,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:04,316 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:04,316 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:04,316 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 18:32:04,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:04,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1751721828, now seen corresponding path program 64 times [2020-01-16 18:32:04,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:04,317 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134887785] [2020-01-16 18:32:04,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:04,795 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:32:04,924 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:04,931 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134887785] [2020-01-16 18:32:04,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:04,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:04,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999352203] [2020-01-16 18:32:04,931 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:04,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:04,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:04,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:04,932 INFO L87 Difference]: Start difference. First operand 1580 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:32:05,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:05,131 INFO L93 Difference]: Finished difference Result 2986 states and 11861 transitions. [2020-01-16 18:32:05,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:05,131 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:05,139 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:32:05,139 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:32:05,140 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 18:32:05,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:32:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1575. [2020-01-16 18:32:05,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:32:05,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7066 transitions. [2020-01-16 18:32:05,206 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7066 transitions. Word has length 28 [2020-01-16 18:32:05,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:05,206 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7066 transitions. [2020-01-16 18:32:05,206 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:05,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7066 transitions. [2020-01-16 18:32:05,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:05,208 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:05,208 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 18:32:05,209 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 18:32:05,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:05,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1433935084, now seen corresponding path program 65 times [2020-01-16 18:32:05,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:05,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480924516] [2020-01-16 18:32:05,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:05,826 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:05,833 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 18:32:05,833 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480924516] [2020-01-16 18:32:05,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:05,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:05,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651815] [2020-01-16 18:32:05,833 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:05,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:05,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:05,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:05,834 INFO L87 Difference]: Start difference. First operand 1575 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:32:06,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:06,032 INFO L93 Difference]: Finished difference Result 2992 states and 11875 transitions. [2020-01-16 18:32:06,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:06,033 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:06,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:06,040 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:32:06,040 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:32:06,041 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 18:32:06,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:32:06,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1582. [2020-01-16 18:32:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:32:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7079 transitions. [2020-01-16 18:32:06,107 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7079 transitions. Word has length 28 [2020-01-16 18:32:06,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:06,107 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7079 transitions. [2020-01-16 18:32:06,108 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:06,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7079 transitions. [2020-01-16 18:32:06,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:06,110 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:06,110 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 18:32:06,110 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 18:32:06,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:06,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2005389890, now seen corresponding path program 66 times [2020-01-16 18:32:06,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:06,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950193556] [2020-01-16 18:32:06,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:06,729 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:06,736 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 18:32:06,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950193556] [2020-01-16 18:32:06,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:06,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:06,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643768839] [2020-01-16 18:32:06,737 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:06,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:06,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:06,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:06,737 INFO L87 Difference]: Start difference. First operand 1582 states and 7079 transitions. Second operand 11 states. [2020-01-16 18:32:06,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:06,950 INFO L93 Difference]: Finished difference Result 2991 states and 11866 transitions. [2020-01-16 18:32:06,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:06,951 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:06,958 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:32:06,959 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:32:06,959 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 18:32:07,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:32:07,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1570. [2020-01-16 18:32:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:32:07,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 18:32:07,025 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 18:32:07,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:07,025 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 18:32:07,026 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 18:32:07,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:07,028 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:07,028 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 18:32:07,028 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 18:32:07,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:07,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1379504544, now seen corresponding path program 67 times [2020-01-16 18:32:07,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:07,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966410029] [2020-01-16 18:32:07,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:07,510 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:32:07,649 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:07,657 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 18:32:07,657 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966410029] [2020-01-16 18:32:07,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:07,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:07,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607616695] [2020-01-16 18:32:07,657 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:07,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:07,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:07,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:07,658 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:32:07,860 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2020-01-16 18:32:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:07,878 INFO L93 Difference]: Finished difference Result 2992 states and 11883 transitions. [2020-01-16 18:32:07,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:07,878 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:07,886 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:32:07,887 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 18:32:07,887 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 18:32:07,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 18:32:07,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1582. [2020-01-16 18:32:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:32:07,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7086 transitions. [2020-01-16 18:32:07,952 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7086 transitions. Word has length 28 [2020-01-16 18:32:07,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:07,953 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7086 transitions. [2020-01-16 18:32:07,953 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:07,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7086 transitions. [2020-01-16 18:32:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:07,955 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:07,955 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 18:32:07,955 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 18:32:07,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:07,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1426057756, now seen corresponding path program 68 times [2020-01-16 18:32:07,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:07,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796146293] [2020-01-16 18:32:07,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:08,442 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:32:08,572 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:08,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796146293] [2020-01-16 18:32:08,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:08,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:08,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238085385] [2020-01-16 18:32:08,580 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:08,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:08,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:08,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:08,581 INFO L87 Difference]: Start difference. First operand 1582 states and 7086 transitions. Second operand 11 states. [2020-01-16 18:32:08,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:08,808 INFO L93 Difference]: Finished difference Result 2994 states and 11881 transitions. [2020-01-16 18:32:08,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:08,808 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:08,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:08,816 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 18:32:08,816 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:32:08,816 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 18:32:08,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:32:08,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1576. [2020-01-16 18:32:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:32:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7069 transitions. [2020-01-16 18:32:08,884 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7069 transitions. Word has length 28 [2020-01-16 18:32:08,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:08,884 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7069 transitions. [2020-01-16 18:32:08,884 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:08,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7069 transitions. [2020-01-16 18:32:08,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:08,887 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:08,887 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 18:32:08,887 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 18:32:08,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:08,887 INFO L82 PathProgramCache]: Analyzing trace with hash 844274742, now seen corresponding path program 69 times [2020-01-16 18:32:08,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:08,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935452203] [2020-01-16 18:32:08,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:09,495 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:32:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:09,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935452203] [2020-01-16 18:32:09,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:09,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:09,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498448244] [2020-01-16 18:32:09,504 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:09,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:09,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:09,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:09,504 INFO L87 Difference]: Start difference. First operand 1576 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:32:09,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:09,706 INFO L93 Difference]: Finished difference Result 2991 states and 11875 transitions. [2020-01-16 18:32:09,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:09,706 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:09,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:09,714 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:32:09,714 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:32:09,714 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:32:09,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:32:09,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1582. [2020-01-16 18:32:09,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:32:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7080 transitions. [2020-01-16 18:32:09,781 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7080 transitions. Word has length 28 [2020-01-16 18:32:09,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:09,781 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7080 transitions. [2020-01-16 18:32:09,781 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7080 transitions. [2020-01-16 18:32:09,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:09,784 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:09,784 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 18:32:09,784 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 18:32:09,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:09,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1762224932, now seen corresponding path program 70 times [2020-01-16 18:32:09,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:09,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023729466] [2020-01-16 18:32:09,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:10,401 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:32:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:10,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023729466] [2020-01-16 18:32:10,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:10,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:10,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541114390] [2020-01-16 18:32:10,409 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:10,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:10,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:10,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:10,410 INFO L87 Difference]: Start difference. First operand 1582 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:32:10,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:10,606 INFO L93 Difference]: Finished difference Result 2992 states and 11871 transitions. [2020-01-16 18:32:10,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:10,607 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:10,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:10,615 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:32:10,615 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 18:32:10,615 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 18:32:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 18:32:10,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1576. [2020-01-16 18:32:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:32:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7063 transitions. [2020-01-16 18:32:10,683 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7063 transitions. Word has length 28 [2020-01-16 18:32:10,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:10,683 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7063 transitions. [2020-01-16 18:32:10,683 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:10,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7063 transitions. [2020-01-16 18:32:10,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:10,686 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:10,686 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 18:32:10,686 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 18:32:10,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:10,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1260594358, now seen corresponding path program 71 times [2020-01-16 18:32:10,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:10,686 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465829348] [2020-01-16 18:32:10,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:11,171 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:32:11,299 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 18:32:11,307 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 18:32:11,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465829348] [2020-01-16 18:32:11,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:11,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:11,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875088076] [2020-01-16 18:32:11,307 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:11,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:11,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:11,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:11,308 INFO L87 Difference]: Start difference. First operand 1576 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:32:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:11,540 INFO L93 Difference]: Finished difference Result 2996 states and 11880 transitions. [2020-01-16 18:32:11,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:11,540 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:11,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:11,548 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:32:11,548 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:32:11,548 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 18:32:11,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:32:11,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1583. [2020-01-16 18:32:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:32:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7076 transitions. [2020-01-16 18:32:11,617 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7076 transitions. Word has length 28 [2020-01-16 18:32:11,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:11,617 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7076 transitions. [2020-01-16 18:32:11,617 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7076 transitions. [2020-01-16 18:32:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:11,619 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:11,619 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:11,619 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 18:32:11,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:11,620 INFO L82 PathProgramCache]: Analyzing trace with hash 689139552, now seen corresponding path program 72 times [2020-01-16 18:32:11,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:11,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22894498] [2020-01-16 18:32:11,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:12,111 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:32:12,236 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:32:12,244 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 18:32:12,244 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22894498] [2020-01-16 18:32:12,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:12,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:12,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011864666] [2020-01-16 18:32:12,245 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:12,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:12,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:12,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:12,245 INFO L87 Difference]: Start difference. First operand 1583 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:32:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:12,480 INFO L93 Difference]: Finished difference Result 2995 states and 11871 transitions. [2020-01-16 18:32:12,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:12,480 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:12,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:12,487 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 18:32:12,487 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:32:12,488 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 18:32:12,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:32:12,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1565. [2020-01-16 18:32:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:32:12,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7038 transitions. [2020-01-16 18:32:12,581 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7038 transitions. Word has length 28 [2020-01-16 18:32:12,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:12,581 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7038 transitions. [2020-01-16 18:32:12,581 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:12,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7038 transitions. [2020-01-16 18:32:12,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:12,584 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:12,584 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 18:32:12,584 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 18:32:12,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:12,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1952084594, now seen corresponding path program 73 times [2020-01-16 18:32:12,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:12,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24160477] [2020-01-16 18:32:12,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:13,063 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:32:13,194 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:13,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24160477] [2020-01-16 18:32:13,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:13,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:13,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078427301] [2020-01-16 18:32:13,202 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:13,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:13,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:13,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:13,203 INFO L87 Difference]: Start difference. First operand 1565 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:32:13,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:13,392 INFO L93 Difference]: Finished difference Result 3018 states and 11947 transitions. [2020-01-16 18:32:13,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:13,393 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:13,400 INFO L225 Difference]: With dead ends: 3018 [2020-01-16 18:32:13,401 INFO L226 Difference]: Without dead ends: 3003 [2020-01-16 18:32:13,401 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 18:32:13,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2020-01-16 18:32:13,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 1586. [2020-01-16 18:32:13,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:32:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7106 transitions. [2020-01-16 18:32:13,470 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7106 transitions. Word has length 28 [2020-01-16 18:32:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:13,470 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7106 transitions. [2020-01-16 18:32:13,470 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7106 transitions. [2020-01-16 18:32:13,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:13,472 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:13,472 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 18:32:13,472 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 18:32:13,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:13,473 INFO L82 PathProgramCache]: Analyzing trace with hash -853477706, now seen corresponding path program 74 times [2020-01-16 18:32:13,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:13,473 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317145791] [2020-01-16 18:32:13,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:13,963 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:32:14,090 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:14,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317145791] [2020-01-16 18:32:14,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:14,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:14,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744501995] [2020-01-16 18:32:14,098 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:14,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:14,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:14,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:14,099 INFO L87 Difference]: Start difference. First operand 1586 states and 7106 transitions. Second operand 11 states. [2020-01-16 18:32:14,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:14,256 INFO L93 Difference]: Finished difference Result 3023 states and 11951 transitions. [2020-01-16 18:32:14,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:14,257 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:14,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:14,263 INFO L225 Difference]: With dead ends: 3023 [2020-01-16 18:32:14,263 INFO L226 Difference]: Without dead ends: 2997 [2020-01-16 18:32:14,263 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 18:32:14,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2020-01-16 18:32:14,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1580. [2020-01-16 18:32:14,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:32:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7089 transitions. [2020-01-16 18:32:14,330 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7089 transitions. Word has length 28 [2020-01-16 18:32:14,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:14,331 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7089 transitions. [2020-01-16 18:32:14,331 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:14,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7089 transitions. [2020-01-16 18:32:14,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:14,333 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:14,333 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 18:32:14,333 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 18:32:14,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:14,333 INFO L82 PathProgramCache]: Analyzing trace with hash -731941744, now seen corresponding path program 75 times [2020-01-16 18:32:14,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:14,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108140877] [2020-01-16 18:32:14,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:14,918 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:14,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:14,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108140877] [2020-01-16 18:32:14,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:14,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:14,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407817138] [2020-01-16 18:32:14,926 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:14,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:14,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:14,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:14,927 INFO L87 Difference]: Start difference. First operand 1580 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:32:15,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:15,122 INFO L93 Difference]: Finished difference Result 3015 states and 11936 transitions. [2020-01-16 18:32:15,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:15,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:15,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:15,131 INFO L225 Difference]: With dead ends: 3015 [2020-01-16 18:32:15,131 INFO L226 Difference]: Without dead ends: 3000 [2020-01-16 18:32:15,131 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 18:32:15,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-01-16 18:32:15,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1585. [2020-01-16 18:32:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:32:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7098 transitions. [2020-01-16 18:32:15,198 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7098 transitions. Word has length 28 [2020-01-16 18:32:15,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:15,198 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7098 transitions. [2020-01-16 18:32:15,198 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7098 transitions. [2020-01-16 18:32:15,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:15,201 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:15,201 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:15,201 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 18:32:15,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:15,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1502165750, now seen corresponding path program 76 times [2020-01-16 18:32:15,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:15,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472030283] [2020-01-16 18:32:15,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:15,669 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:32:15,798 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:15,805 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 18:32:15,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472030283] [2020-01-16 18:32:15,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:15,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:15,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529194767] [2020-01-16 18:32:15,806 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:15,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:15,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:15,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:15,807 INFO L87 Difference]: Start difference. First operand 1585 states and 7098 transitions. Second operand 11 states. [2020-01-16 18:32:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:16,061 INFO L93 Difference]: Finished difference Result 3018 states and 11937 transitions. [2020-01-16 18:32:16,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:16,061 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:16,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:16,068 INFO L225 Difference]: With dead ends: 3018 [2020-01-16 18:32:16,068 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 18:32:16,068 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 18:32:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 18:32:16,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1580. [2020-01-16 18:32:16,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:32:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7084 transitions. [2020-01-16 18:32:16,135 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7084 transitions. Word has length 28 [2020-01-16 18:32:16,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:16,135 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7084 transitions. [2020-01-16 18:32:16,136 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:16,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7084 transitions. [2020-01-16 18:32:16,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:16,138 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:16,138 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 18:32:16,138 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 18:32:16,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:16,138 INFO L82 PathProgramCache]: Analyzing trace with hash -315622128, now seen corresponding path program 77 times [2020-01-16 18:32:16,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:16,139 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192310073] [2020-01-16 18:32:16,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:16,638 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:32:16,766 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:16,774 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192310073] [2020-01-16 18:32:16,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:16,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:16,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058941011] [2020-01-16 18:32:16,774 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:16,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:16,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:16,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:16,775 INFO L87 Difference]: Start difference. First operand 1580 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:32:16,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:16,948 INFO L93 Difference]: Finished difference Result 3030 states and 11961 transitions. [2020-01-16 18:32:16,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:16,948 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:16,956 INFO L225 Difference]: With dead ends: 3030 [2020-01-16 18:32:16,956 INFO L226 Difference]: Without dead ends: 3010 [2020-01-16 18:32:16,957 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 18:32:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2020-01-16 18:32:17,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1590. [2020-01-16 18:32:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:32:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7101 transitions. [2020-01-16 18:32:17,025 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7101 transitions. Word has length 28 [2020-01-16 18:32:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:17,025 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7101 transitions. [2020-01-16 18:32:17,025 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7101 transitions. [2020-01-16 18:32:17,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:17,028 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:17,028 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 18:32:17,028 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 18:32:17,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:17,028 INFO L82 PathProgramCache]: Analyzing trace with hash 429080370, now seen corresponding path program 78 times [2020-01-16 18:32:17,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:17,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911423465] [2020-01-16 18:32:17,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:17,554 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:32:17,682 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:17,689 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 18:32:17,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911423465] [2020-01-16 18:32:17,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:17,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:17,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391133750] [2020-01-16 18:32:17,690 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:17,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:17,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:17,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:17,690 INFO L87 Difference]: Start difference. First operand 1590 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:32:17,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:17,933 INFO L93 Difference]: Finished difference Result 3028 states and 11949 transitions. [2020-01-16 18:32:17,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:17,934 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:17,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:17,942 INFO L225 Difference]: With dead ends: 3028 [2020-01-16 18:32:17,942 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 18:32:17,942 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 18:32:17,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 18:32:18,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1573. [2020-01-16 18:32:18,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:32:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7064 transitions. [2020-01-16 18:32:18,009 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7064 transitions. Word has length 28 [2020-01-16 18:32:18,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:18,010 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7064 transitions. [2020-01-16 18:32:18,010 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:18,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7064 transitions. [2020-01-16 18:32:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:18,012 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:18,013 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 18:32:18,013 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 18:32:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:18,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1755137380, now seen corresponding path program 79 times [2020-01-16 18:32:18,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:18,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798321494] [2020-01-16 18:32:18,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:18,617 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:32:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:18,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798321494] [2020-01-16 18:32:18,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:18,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:18,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568120925] [2020-01-16 18:32:18,626 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:18,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:18,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:18,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:18,626 INFO L87 Difference]: Start difference. First operand 1573 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:32:18,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:18,839 INFO L93 Difference]: Finished difference Result 3014 states and 11932 transitions. [2020-01-16 18:32:18,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:18,840 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:18,847 INFO L225 Difference]: With dead ends: 3014 [2020-01-16 18:32:18,847 INFO L226 Difference]: Without dead ends: 2999 [2020-01-16 18:32:18,847 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 18:32:18,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-01-16 18:32:18,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 1585. [2020-01-16 18:32:18,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:32:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7097 transitions. [2020-01-16 18:32:18,914 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7097 transitions. Word has length 28 [2020-01-16 18:32:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:18,914 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7097 transitions. [2020-01-16 18:32:18,914 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7097 transitions. [2020-01-16 18:32:18,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:18,917 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:18,917 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:18,917 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 18:32:18,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:18,917 INFO L82 PathProgramCache]: Analyzing trace with hash -265732384, now seen corresponding path program 80 times [2020-01-16 18:32:18,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:18,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440339795] [2020-01-16 18:32:18,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:19,399 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:32:19,525 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:32:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:19,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440339795] [2020-01-16 18:32:19,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:19,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:19,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322359408] [2020-01-16 18:32:19,533 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:19,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:19,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:19,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:19,534 INFO L87 Difference]: Start difference. First operand 1585 states and 7097 transitions. Second operand 11 states. [2020-01-16 18:32:19,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:19,734 INFO L93 Difference]: Finished difference Result 3019 states and 11936 transitions. [2020-01-16 18:32:19,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:19,735 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:19,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:19,742 INFO L225 Difference]: With dead ends: 3019 [2020-01-16 18:32:19,743 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 18:32:19,743 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 18:32:19,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 18:32:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1579. [2020-01-16 18:32:19,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:32:19,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7080 transitions. [2020-01-16 18:32:19,810 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7080 transitions. Word has length 28 [2020-01-16 18:32:19,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:19,810 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7080 transitions. [2020-01-16 18:32:19,810 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7080 transitions. [2020-01-16 18:32:19,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:19,812 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:19,812 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:19,812 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 18:32:19,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:19,813 INFO L82 PathProgramCache]: Analyzing trace with hash -679426224, now seen corresponding path program 81 times [2020-01-16 18:32:19,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:19,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319783100] [2020-01-16 18:32:19,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:20,408 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:32:20,415 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 18:32:20,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319783100] [2020-01-16 18:32:20,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:20,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:20,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984966826] [2020-01-16 18:32:20,416 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:20,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:20,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:20,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:20,416 INFO L87 Difference]: Start difference. First operand 1579 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:32:20,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:20,626 INFO L93 Difference]: Finished difference Result 3010 states and 11919 transitions. [2020-01-16 18:32:20,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:20,627 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:20,635 INFO L225 Difference]: With dead ends: 3010 [2020-01-16 18:32:20,635 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 18:32:20,635 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 18:32:20,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 18:32:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1584. [2020-01-16 18:32:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:32:20,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7089 transitions. [2020-01-16 18:32:20,701 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7089 transitions. Word has length 28 [2020-01-16 18:32:20,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:20,702 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7089 transitions. [2020-01-16 18:32:20,702 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:20,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7089 transitions. [2020-01-16 18:32:20,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:20,705 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:20,705 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 18:32:20,705 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 18:32:20,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:20,706 INFO L82 PathProgramCache]: Analyzing trace with hash 983226464, now seen corresponding path program 82 times [2020-01-16 18:32:20,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:20,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491918308] [2020-01-16 18:32:20,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:21,220 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2020-01-16 18:32:21,351 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:32:21,358 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 18:32:21,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491918308] [2020-01-16 18:32:21,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:21,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:21,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925568139] [2020-01-16 18:32:21,359 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:21,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:21,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:21,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:21,359 INFO L87 Difference]: Start difference. First operand 1584 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:32:21,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:21,566 INFO L93 Difference]: Finished difference Result 3012 states and 11918 transitions. [2020-01-16 18:32:21,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:21,567 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:21,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:21,575 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:32:21,575 INFO L226 Difference]: Without dead ends: 2990 [2020-01-16 18:32:21,575 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 18:32:21,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-01-16 18:32:21,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1579. [2020-01-16 18:32:21,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:32:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7075 transitions. [2020-01-16 18:32:21,642 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7075 transitions. Word has length 28 [2020-01-16 18:32:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:21,642 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7075 transitions. [2020-01-16 18:32:21,642 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7075 transitions. [2020-01-16 18:32:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:21,644 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:21,644 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 18:32:21,644 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 18:32:21,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:21,645 INFO L82 PathProgramCache]: Analyzing trace with hash -263106608, now seen corresponding path program 83 times [2020-01-16 18:32:21,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:21,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721901077] [2020-01-16 18:32:21,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:22,154 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:32:22,281 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:32:22,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:22,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721901077] [2020-01-16 18:32:22,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:22,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:22,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200602916] [2020-01-16 18:32:22,289 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:22,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:22,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:22,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:22,289 INFO L87 Difference]: Start difference. First operand 1579 states and 7075 transitions. Second operand 11 states. [2020-01-16 18:32:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:22,506 INFO L93 Difference]: Finished difference Result 3023 states and 11940 transitions. [2020-01-16 18:32:22,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:22,506 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:22,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:22,514 INFO L225 Difference]: With dead ends: 3023 [2020-01-16 18:32:22,514 INFO L226 Difference]: Without dead ends: 3003 [2020-01-16 18:32:22,515 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 18:32:22,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2020-01-16 18:32:22,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 1587. [2020-01-16 18:32:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:32:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7089 transitions. [2020-01-16 18:32:22,581 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7089 transitions. Word has length 28 [2020-01-16 18:32:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:22,582 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7089 transitions. [2020-01-16 18:32:22,582 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:22,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7089 transitions. [2020-01-16 18:32:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:22,584 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:22,584 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 18:32:22,584 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 18:32:22,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:22,584 INFO L82 PathProgramCache]: Analyzing trace with hash -89858916, now seen corresponding path program 84 times [2020-01-16 18:32:22,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:22,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637528291] [2020-01-16 18:32:22,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:23,177 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:32:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:23,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637528291] [2020-01-16 18:32:23,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:23,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:23,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161376425] [2020-01-16 18:32:23,185 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:23,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:23,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:23,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:23,185 INFO L87 Difference]: Start difference. First operand 1587 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:32:23,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:23,405 INFO L93 Difference]: Finished difference Result 3020 states and 11927 transitions. [2020-01-16 18:32:23,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:23,406 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:23,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:23,413 INFO L225 Difference]: With dead ends: 3020 [2020-01-16 18:32:23,413 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 18:32:23,413 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 18:32:23,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 18:32:23,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1573. [2020-01-16 18:32:23,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:32:23,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7058 transitions. [2020-01-16 18:32:23,480 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7058 transitions. Word has length 28 [2020-01-16 18:32:23,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:23,480 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7058 transitions. [2020-01-16 18:32:23,480 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7058 transitions. [2020-01-16 18:32:23,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:23,483 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:23,483 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:23,483 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 18:32:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:23,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1744634276, now seen corresponding path program 85 times [2020-01-16 18:32:23,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:23,483 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174243886] [2020-01-16 18:32:23,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:23,977 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:32:24,107 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:24,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174243886] [2020-01-16 18:32:24,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:24,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:24,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857860804] [2020-01-16 18:32:24,115 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:24,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:24,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:24,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:24,115 INFO L87 Difference]: Start difference. First operand 1573 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:32:24,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:24,324 INFO L93 Difference]: Finished difference Result 3006 states and 11911 transitions. [2020-01-16 18:32:24,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:24,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:24,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:24,332 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:32:24,332 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:32:24,332 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 18:32:24,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:32:24,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1583. [2020-01-16 18:32:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:32:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7086 transitions. [2020-01-16 18:32:24,399 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7086 transitions. Word has length 28 [2020-01-16 18:32:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:24,399 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7086 transitions. [2020-01-16 18:32:24,399 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:24,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7086 transitions. [2020-01-16 18:32:24,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:24,401 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:24,401 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 18:32:24,401 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 18:32:24,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:24,402 INFO L82 PathProgramCache]: Analyzing trace with hash 489473218, now seen corresponding path program 86 times [2020-01-16 18:32:24,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:24,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657641880] [2020-01-16 18:32:24,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:24,995 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:25,003 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 18:32:25,003 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657641880] [2020-01-16 18:32:25,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:25,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:25,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233392552] [2020-01-16 18:32:25,003 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:25,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:25,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:25,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:25,004 INFO L87 Difference]: Start difference. First operand 1583 states and 7086 transitions. Second operand 11 states. [2020-01-16 18:32:25,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:25,284 INFO L93 Difference]: Finished difference Result 3009 states and 11912 transitions. [2020-01-16 18:32:25,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:25,285 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:25,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:25,292 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:32:25,293 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 18:32:25,293 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 18:32:25,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 18:32:25,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1578. [2020-01-16 18:32:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:32:25,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7072 transitions. [2020-01-16 18:32:25,359 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7072 transitions. Word has length 28 [2020-01-16 18:32:25,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:25,360 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7072 transitions. [2020-01-16 18:32:25,360 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:25,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7072 transitions. [2020-01-16 18:32:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:25,362 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:25,362 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 18:32:25,362 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 18:32:25,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:25,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2015103218, now seen corresponding path program 87 times [2020-01-16 18:32:25,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:25,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351656882] [2020-01-16 18:32:25,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:25,961 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:25,969 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 18:32:25,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351656882] [2020-01-16 18:32:25,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:25,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:25,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475615682] [2020-01-16 18:32:25,969 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:25,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:25,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:25,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:25,970 INFO L87 Difference]: Start difference. First operand 1578 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:32:26,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:26,225 INFO L93 Difference]: Finished difference Result 3005 states and 11904 transitions. [2020-01-16 18:32:26,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:26,226 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:26,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:26,233 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:32:26,233 INFO L226 Difference]: Without dead ends: 2990 [2020-01-16 18:32:26,233 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 18:32:26,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-01-16 18:32:26,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1583. [2020-01-16 18:32:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:32:26,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7081 transitions. [2020-01-16 18:32:26,299 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7081 transitions. Word has length 28 [2020-01-16 18:32:26,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:26,300 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7081 transitions. [2020-01-16 18:32:26,300 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:26,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7081 transitions. [2020-01-16 18:32:26,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:26,302 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:26,302 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 18:32:26,302 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 18:32:26,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:26,302 INFO L82 PathProgramCache]: Analyzing trace with hash -617211390, now seen corresponding path program 88 times [2020-01-16 18:32:26,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:26,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595836079] [2020-01-16 18:32:26,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:26,779 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:32:26,907 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:26,913 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 18:32:26,913 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595836079] [2020-01-16 18:32:26,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:26,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:26,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305572039] [2020-01-16 18:32:26,914 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:26,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:26,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:26,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:26,914 INFO L87 Difference]: Start difference. First operand 1583 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:32:27,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:27,148 INFO L93 Difference]: Finished difference Result 3007 states and 11903 transitions. [2020-01-16 18:32:27,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:27,148 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:27,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:27,156 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 18:32:27,156 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:32:27,156 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 18:32:27,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:32:27,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1578. [2020-01-16 18:32:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:32:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7067 transitions. [2020-01-16 18:32:27,223 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7067 transitions. Word has length 28 [2020-01-16 18:32:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:27,224 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7067 transitions. [2020-01-16 18:32:27,224 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7067 transitions. [2020-01-16 18:32:27,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:27,226 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:27,226 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:27,226 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 18:32:27,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:27,227 INFO L82 PathProgramCache]: Analyzing trace with hash 492098994, now seen corresponding path program 89 times [2020-01-16 18:32:27,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:27,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580697770] [2020-01-16 18:32:27,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:27,838 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:27,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:27,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580697770] [2020-01-16 18:32:27,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:27,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:27,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061438868] [2020-01-16 18:32:27,846 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:27,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:27,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:27,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:27,847 INFO L87 Difference]: Start difference. First operand 1578 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:32:28,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:28,047 INFO L93 Difference]: Finished difference Result 3013 states and 11917 transitions. [2020-01-16 18:32:28,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:28,048 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:28,055 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 18:32:28,056 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 18:32:28,056 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 18:32:28,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 18:32:28,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1585. [2020-01-16 18:32:28,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:32:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7080 transitions. [2020-01-16 18:32:28,122 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7080 transitions. Word has length 28 [2020-01-16 18:32:28,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:28,122 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7080 transitions. [2020-01-16 18:32:28,122 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:28,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7080 transitions. [2020-01-16 18:32:28,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:28,125 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:28,125 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:28,125 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 18:32:28,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:28,125 INFO L82 PathProgramCache]: Analyzing trace with hash -79355812, now seen corresponding path program 90 times [2020-01-16 18:32:28,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:28,125 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849602085] [2020-01-16 18:32:28,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:28,725 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:28,732 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 18:32:28,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849602085] [2020-01-16 18:32:28,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:28,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:28,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807911460] [2020-01-16 18:32:28,733 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:28,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:28,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:28,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:28,734 INFO L87 Difference]: Start difference. First operand 1585 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:32:28,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:28,969 INFO L93 Difference]: Finished difference Result 3012 states and 11908 transitions. [2020-01-16 18:32:28,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:28,970 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:28,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:28,977 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:32:28,977 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:32:28,978 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 18:32:29,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:32:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1573. [2020-01-16 18:32:29,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:32:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7053 transitions. [2020-01-16 18:32:29,048 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7053 transitions. Word has length 28 [2020-01-16 18:32:29,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:29,048 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7053 transitions. [2020-01-16 18:32:29,048 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:29,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7053 transitions. [2020-01-16 18:32:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:29,052 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:29,052 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:29,052 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 18:32:29,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:29,052 INFO L82 PathProgramCache]: Analyzing trace with hash -234223072, now seen corresponding path program 91 times [2020-01-16 18:32:29,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:29,053 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624595025] [2020-01-16 18:32:29,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:29,671 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:29,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624595025] [2020-01-16 18:32:29,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:29,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:29,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131203773] [2020-01-16 18:32:29,679 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:29,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:29,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:29,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:29,679 INFO L87 Difference]: Start difference. First operand 1573 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:32:29,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:29,830 INFO L93 Difference]: Finished difference Result 3039 states and 11979 transitions. [2020-01-16 18:32:29,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:29,830 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:29,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:29,838 INFO L225 Difference]: With dead ends: 3039 [2020-01-16 18:32:29,838 INFO L226 Difference]: Without dead ends: 3019 [2020-01-16 18:32:29,838 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 18:32:29,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2020-01-16 18:32:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 1593. [2020-01-16 18:32:29,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 18:32:29,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7103 transitions. [2020-01-16 18:32:29,907 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7103 transitions. Word has length 28 [2020-01-16 18:32:29,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:29,907 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7103 transitions. [2020-01-16 18:32:29,907 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:29,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7103 transitions. [2020-01-16 18:32:29,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:29,909 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:29,909 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 18:32:29,910 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 18:32:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:29,910 INFO L82 PathProgramCache]: Analyzing trace with hash 510479426, now seen corresponding path program 92 times [2020-01-16 18:32:29,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:29,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753762414] [2020-01-16 18:32:29,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:30,427 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:32:30,555 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:30,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753762414] [2020-01-16 18:32:30,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:30,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:30,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553807589] [2020-01-16 18:32:30,564 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:30,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:30,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:30,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:30,564 INFO L87 Difference]: Start difference. First operand 1593 states and 7103 transitions. Second operand 11 states. [2020-01-16 18:32:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:30,755 INFO L93 Difference]: Finished difference Result 3037 states and 11967 transitions. [2020-01-16 18:32:30,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:30,755 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:30,763 INFO L225 Difference]: With dead ends: 3037 [2020-01-16 18:32:30,763 INFO L226 Difference]: Without dead ends: 3009 [2020-01-16 18:32:30,763 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 18:32:30,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2020-01-16 18:32:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 1583. [2020-01-16 18:32:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:32:30,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7077 transitions. [2020-01-16 18:32:30,830 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7077 transitions. Word has length 28 [2020-01-16 18:32:30,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:30,830 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7077 transitions. [2020-01-16 18:32:30,830 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:30,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7077 transitions. [2020-01-16 18:32:30,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:30,832 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:30,833 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:30,833 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 18:32:30,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:30,833 INFO L82 PathProgramCache]: Analyzing trace with hash -769452874, now seen corresponding path program 93 times [2020-01-16 18:32:30,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:30,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511923220] [2020-01-16 18:32:30,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:31,329 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:32:31,460 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:32:31,467 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 18:32:31,467 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511923220] [2020-01-16 18:32:31,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:31,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:31,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784994930] [2020-01-16 18:32:31,468 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:31,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:31,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:31,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:31,468 INFO L87 Difference]: Start difference. First operand 1583 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:32:31,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:31,641 INFO L93 Difference]: Finished difference Result 3036 states and 11964 transitions. [2020-01-16 18:32:31,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:31,642 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:31,650 INFO L225 Difference]: With dead ends: 3036 [2020-01-16 18:32:31,650 INFO L226 Difference]: Without dead ends: 3016 [2020-01-16 18:32:31,650 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 18:32:31,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2020-01-16 18:32:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 1591. [2020-01-16 18:32:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 18:32:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7091 transitions. [2020-01-16 18:32:31,727 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7091 transitions. Word has length 28 [2020-01-16 18:32:31,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:31,727 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7091 transitions. [2020-01-16 18:32:31,727 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:31,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7091 transitions. [2020-01-16 18:32:31,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:31,730 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:31,730 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:31,730 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 18:32:31,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:31,731 INFO L82 PathProgramCache]: Analyzing trace with hash -596205182, now seen corresponding path program 94 times [2020-01-16 18:32:31,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:31,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938493244] [2020-01-16 18:32:31,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:32,471 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:32:32,477 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 18:32:32,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938493244] [2020-01-16 18:32:32,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:32,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:32,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102916718] [2020-01-16 18:32:32,478 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:32,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:32,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:32,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:32,479 INFO L87 Difference]: Start difference. First operand 1591 states and 7091 transitions. Second operand 11 states. [2020-01-16 18:32:32,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:32,680 INFO L93 Difference]: Finished difference Result 3033 states and 11951 transitions. [2020-01-16 18:32:32,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:32,680 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:32,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:32,688 INFO L225 Difference]: With dead ends: 3033 [2020-01-16 18:32:32,688 INFO L226 Difference]: Without dead ends: 3008 [2020-01-16 18:32:32,688 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 18:32:32,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-01-16 18:32:32,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1583. [2020-01-16 18:32:32,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:32:32,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7069 transitions. [2020-01-16 18:32:32,755 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7069 transitions. Word has length 28 [2020-01-16 18:32:32,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:32,755 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7069 transitions. [2020-01-16 18:32:32,755 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:32,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7069 transitions. [2020-01-16 18:32:32,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:32,757 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:32,757 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 18:32:32,757 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 18:32:32,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:32,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1586190582, now seen corresponding path program 95 times [2020-01-16 18:32:32,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:32,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421005188] [2020-01-16 18:32:32,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:33,369 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:33,377 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 18:32:33,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421005188] [2020-01-16 18:32:33,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:33,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:33,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401454312] [2020-01-16 18:32:33,378 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:33,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:33,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:33,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:33,378 INFO L87 Difference]: Start difference. First operand 1583 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:32:33,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:33,585 INFO L93 Difference]: Finished difference Result 3031 states and 11948 transitions. [2020-01-16 18:32:33,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:33,586 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:33,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:33,593 INFO L225 Difference]: With dead ends: 3031 [2020-01-16 18:32:33,593 INFO L226 Difference]: Without dead ends: 3013 [2020-01-16 18:32:33,594 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 18:32:33,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2020-01-16 18:32:33,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 1590. [2020-01-16 18:32:33,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:32:33,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7082 transitions. [2020-01-16 18:32:33,662 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7082 transitions. Word has length 28 [2020-01-16 18:32:33,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:33,662 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7082 transitions. [2020-01-16 18:32:33,662 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:33,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7082 transitions. [2020-01-16 18:32:33,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:33,665 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:33,665 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:33,665 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 18:32:33,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:33,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1014735776, now seen corresponding path program 96 times [2020-01-16 18:32:33,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:33,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428422617] [2020-01-16 18:32:33,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:34,152 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:32:34,284 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:34,291 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 18:32:34,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428422617] [2020-01-16 18:32:34,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:34,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:34,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984959150] [2020-01-16 18:32:34,292 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:34,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:34,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:34,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:34,292 INFO L87 Difference]: Start difference. First operand 1590 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:32:34,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:34,501 INFO L93 Difference]: Finished difference Result 3030 states and 11939 transitions. [2020-01-16 18:32:34,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:34,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:34,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:34,509 INFO L225 Difference]: With dead ends: 3030 [2020-01-16 18:32:34,509 INFO L226 Difference]: Without dead ends: 2988 [2020-01-16 18:32:34,510 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 18:32:34,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-01-16 18:32:34,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1565. [2020-01-16 18:32:34,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:32:34,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7030 transitions. [2020-01-16 18:32:34,576 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7030 transitions. Word has length 28 [2020-01-16 18:32:34,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:34,576 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7030 transitions. [2020-01-16 18:32:34,576 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7030 transitions. [2020-01-16 18:32:34,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:34,578 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:34,578 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 18:32:34,578 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 18:32:34,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:34,579 INFO L82 PathProgramCache]: Analyzing trace with hash 338356978, now seen corresponding path program 97 times [2020-01-16 18:32:34,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:34,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035563447] [2020-01-16 18:32:34,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:35,200 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:35,207 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 18:32:35,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035563447] [2020-01-16 18:32:35,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:35,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:35,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491441066] [2020-01-16 18:32:35,208 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:35,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:35,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:35,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:35,208 INFO L87 Difference]: Start difference. First operand 1565 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:32:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:35,391 INFO L93 Difference]: Finished difference Result 3034 states and 11987 transitions. [2020-01-16 18:32:35,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:35,392 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:35,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:35,399 INFO L225 Difference]: With dead ends: 3034 [2020-01-16 18:32:35,400 INFO L226 Difference]: Without dead ends: 3018 [2020-01-16 18:32:35,400 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 18:32:35,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2020-01-16 18:32:35,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1590. [2020-01-16 18:32:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:32:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7110 transitions. [2020-01-16 18:32:35,469 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7110 transitions. Word has length 28 [2020-01-16 18:32:35,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:35,469 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7110 transitions. [2020-01-16 18:32:35,469 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:35,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7110 transitions. [2020-01-16 18:32:35,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:35,471 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:35,472 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 18:32:35,472 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 18:32:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:35,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1083059476, now seen corresponding path program 98 times [2020-01-16 18:32:35,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:35,472 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361951938] [2020-01-16 18:32:35,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:35,965 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:32:36,093 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:36,101 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361951938] [2020-01-16 18:32:36,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:36,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:36,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309700481] [2020-01-16 18:32:36,101 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:36,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:36,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:36,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:36,102 INFO L87 Difference]: Start difference. First operand 1590 states and 7110 transitions. Second operand 11 states. [2020-01-16 18:32:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:36,264 INFO L93 Difference]: Finished difference Result 3038 states and 11988 transitions. [2020-01-16 18:32:36,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:36,264 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:36,271 INFO L225 Difference]: With dead ends: 3038 [2020-01-16 18:32:36,271 INFO L226 Difference]: Without dead ends: 3011 [2020-01-16 18:32:36,272 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:32:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2020-01-16 18:32:36,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 1583. [2020-01-16 18:32:36,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:32:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7090 transitions. [2020-01-16 18:32:36,339 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7090 transitions. Word has length 28 [2020-01-16 18:32:36,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:36,339 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7090 transitions. [2020-01-16 18:32:36,339 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:36,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7090 transitions. [2020-01-16 18:32:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:36,342 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:36,342 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:36,342 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 18:32:36,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:36,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1949297936, now seen corresponding path program 99 times [2020-01-16 18:32:36,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:36,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992432049] [2020-01-16 18:32:36,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:36,853 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:32:36,979 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:36,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992432049] [2020-01-16 18:32:36,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:36,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:36,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817802056] [2020-01-16 18:32:36,987 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:36,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:36,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:36,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:36,987 INFO L87 Difference]: Start difference. First operand 1583 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:32:37,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:37,240 INFO L93 Difference]: Finished difference Result 3031 states and 11975 transitions. [2020-01-16 18:32:37,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:37,241 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:37,248 INFO L225 Difference]: With dead ends: 3031 [2020-01-16 18:32:37,248 INFO L226 Difference]: Without dead ends: 3015 [2020-01-16 18:32:37,249 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 18:32:37,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2020-01-16 18:32:37,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 1589. [2020-01-16 18:32:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 18:32:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7101 transitions. [2020-01-16 18:32:37,316 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7101 transitions. Word has length 28 [2020-01-16 18:32:37,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:37,317 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7101 transitions. [2020-01-16 18:32:37,317 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7101 transitions. [2020-01-16 18:32:37,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:37,319 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:37,319 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 18:32:37,319 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 18:32:37,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:37,320 INFO L82 PathProgramCache]: Analyzing trace with hash -856264364, now seen corresponding path program 100 times [2020-01-16 18:32:37,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:37,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466157476] [2020-01-16 18:32:37,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:37,925 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:37,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466157476] [2020-01-16 18:32:37,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:37,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:37,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343083103] [2020-01-16 18:32:37,932 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:37,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:37,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:37,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:37,933 INFO L87 Difference]: Start difference. First operand 1589 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:32:38,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:38,153 INFO L93 Difference]: Finished difference Result 3033 states and 11973 transitions. [2020-01-16 18:32:38,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:38,154 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:38,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:38,162 INFO L225 Difference]: With dead ends: 3033 [2020-01-16 18:32:38,162 INFO L226 Difference]: Without dead ends: 3009 [2020-01-16 18:32:38,162 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 18:32:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2020-01-16 18:32:38,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 1583. [2020-01-16 18:32:38,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:32:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7084 transitions. [2020-01-16 18:32:38,229 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7084 transitions. Word has length 28 [2020-01-16 18:32:38,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:38,229 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7084 transitions. [2020-01-16 18:32:38,229 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7084 transitions. [2020-01-16 18:32:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:38,231 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:38,231 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:38,231 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 18:32:38,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:38,232 INFO L82 PathProgramCache]: Analyzing trace with hash 9974096, now seen corresponding path program 101 times [2020-01-16 18:32:38,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:38,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336441686] [2020-01-16 18:32:38,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:38,726 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:32:38,855 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:38,862 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 18:32:38,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336441686] [2020-01-16 18:32:38,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:38,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:38,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022750281] [2020-01-16 18:32:38,863 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:38,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:38,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:38,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:38,864 INFO L87 Difference]: Start difference. First operand 1583 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:32:39,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:39,044 INFO L93 Difference]: Finished difference Result 3043 states and 11992 transitions. [2020-01-16 18:32:39,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:39,044 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:39,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:39,052 INFO L225 Difference]: With dead ends: 3043 [2020-01-16 18:32:39,052 INFO L226 Difference]: Without dead ends: 3023 [2020-01-16 18:32:39,052 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 18:32:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2020-01-16 18:32:39,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 1593. [2020-01-16 18:32:39,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 18:32:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7101 transitions. [2020-01-16 18:32:39,120 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7101 transitions. Word has length 28 [2020-01-16 18:32:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:39,120 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7101 transitions. [2020-01-16 18:32:39,120 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:39,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7101 transitions. [2020-01-16 18:32:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:39,122 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:39,122 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 18:32:39,123 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 18:32:39,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:39,123 INFO L82 PathProgramCache]: Analyzing trace with hash 754676594, now seen corresponding path program 102 times [2020-01-16 18:32:39,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:39,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952551790] [2020-01-16 18:32:39,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:39,639 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 28 [2020-01-16 18:32:39,874 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 18:32:39,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952551790] [2020-01-16 18:32:39,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:39,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:39,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366158565] [2020-01-16 18:32:39,875 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:39,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:39,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:39,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:39,875 INFO L87 Difference]: Start difference. First operand 1593 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:32:40,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:40,084 INFO L93 Difference]: Finished difference Result 3041 states and 11980 transitions. [2020-01-16 18:32:40,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:40,084 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:40,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:40,092 INFO L225 Difference]: With dead ends: 3041 [2020-01-16 18:32:40,093 INFO L226 Difference]: Without dead ends: 3005 [2020-01-16 18:32:40,093 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 18:32:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-01-16 18:32:40,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1575. [2020-01-16 18:32:40,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:32:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7061 transitions. [2020-01-16 18:32:40,160 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7061 transitions. Word has length 28 [2020-01-16 18:32:40,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:40,161 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7061 transitions. [2020-01-16 18:32:40,161 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:40,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7061 transitions. [2020-01-16 18:32:40,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:40,163 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:40,163 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 18:32:40,163 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 18:32:40,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:40,164 INFO L82 PathProgramCache]: Analyzing trace with hash 926102300, now seen corresponding path program 103 times [2020-01-16 18:32:40,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:40,164 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223734661] [2020-01-16 18:32:40,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:40,785 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:40,793 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 18:32:40,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223734661] [2020-01-16 18:32:40,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:40,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:40,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563210698] [2020-01-16 18:32:40,794 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:40,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:40,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:40,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:40,794 INFO L87 Difference]: Start difference. First operand 1575 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:32:41,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:41,051 INFO L93 Difference]: Finished difference Result 3030 states and 11971 transitions. [2020-01-16 18:32:41,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:41,051 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:41,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:41,059 INFO L225 Difference]: With dead ends: 3030 [2020-01-16 18:32:41,059 INFO L226 Difference]: Without dead ends: 3014 [2020-01-16 18:32:41,060 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:32:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2020-01-16 18:32:41,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 1589. [2020-01-16 18:32:41,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 18:32:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7100 transitions. [2020-01-16 18:32:41,128 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7100 transitions. Word has length 28 [2020-01-16 18:32:41,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:41,128 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7100 transitions. [2020-01-16 18:32:41,128 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7100 transitions. [2020-01-16 18:32:41,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:41,130 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:41,130 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 18:32:41,130 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 18:32:41,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:41,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1670804798, now seen corresponding path program 104 times [2020-01-16 18:32:41,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:41,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365544158] [2020-01-16 18:32:41,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:41,614 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 18:32:41,742 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:41,749 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 18:32:41,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365544158] [2020-01-16 18:32:41,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:41,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:41,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281766485] [2020-01-16 18:32:41,751 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:41,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:41,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:41,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:41,751 INFO L87 Difference]: Start difference. First operand 1589 states and 7100 transitions. Second operand 11 states. [2020-01-16 18:32:41,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:41,946 INFO L93 Difference]: Finished difference Result 3034 states and 11972 transitions. [2020-01-16 18:32:41,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:41,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:41,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:41,978 INFO L225 Difference]: With dead ends: 3034 [2020-01-16 18:32:41,978 INFO L226 Difference]: Without dead ends: 3007 [2020-01-16 18:32:41,978 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 18:32:42,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2020-01-16 18:32:42,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 1582. [2020-01-16 18:32:42,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:32:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7080 transitions. [2020-01-16 18:32:42,042 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7080 transitions. Word has length 28 [2020-01-16 18:32:42,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:42,043 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7080 transitions. [2020-01-16 18:32:42,043 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:42,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7080 transitions. [2020-01-16 18:32:42,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:42,045 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:42,045 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 18:32:42,045 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 18:32:42,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:42,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2001813456, now seen corresponding path program 105 times [2020-01-16 18:32:42,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:42,046 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78230016] [2020-01-16 18:32:42,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:42,657 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:42,664 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 18:32:42,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78230016] [2020-01-16 18:32:42,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:42,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:42,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64180944] [2020-01-16 18:32:42,665 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:42,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:42,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:42,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:42,666 INFO L87 Difference]: Start difference. First operand 1582 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:32:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:42,922 INFO L93 Difference]: Finished difference Result 3026 states and 11957 transitions. [2020-01-16 18:32:42,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:42,923 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:42,930 INFO L225 Difference]: With dead ends: 3026 [2020-01-16 18:32:42,931 INFO L226 Difference]: Without dead ends: 3010 [2020-01-16 18:32:42,931 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 18:32:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2020-01-16 18:32:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1588. [2020-01-16 18:32:42,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:32:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7091 transitions. [2020-01-16 18:32:42,998 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7091 transitions. Word has length 28 [2020-01-16 18:32:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:42,998 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7091 transitions. [2020-01-16 18:32:42,998 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7091 transitions. [2020-01-16 18:32:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:43,001 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:43,001 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:43,001 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 18:32:43,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:43,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1375203650, now seen corresponding path program 106 times [2020-01-16 18:32:43,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:43,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542979328] [2020-01-16 18:32:43,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:43,609 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:43,615 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 18:32:43,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542979328] [2020-01-16 18:32:43,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:43,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:43,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936835529] [2020-01-16 18:32:43,616 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:43,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:43,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:43,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:43,617 INFO L87 Difference]: Start difference. First operand 1588 states and 7091 transitions. Second operand 11 states. [2020-01-16 18:32:43,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:43,816 INFO L93 Difference]: Finished difference Result 3027 states and 11953 transitions. [2020-01-16 18:32:43,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:43,816 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:43,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:43,824 INFO L225 Difference]: With dead ends: 3027 [2020-01-16 18:32:43,824 INFO L226 Difference]: Without dead ends: 3004 [2020-01-16 18:32:43,825 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 18:32:43,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2020-01-16 18:32:43,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 1582. [2020-01-16 18:32:43,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:32:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7074 transitions. [2020-01-16 18:32:43,893 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7074 transitions. Word has length 28 [2020-01-16 18:32:43,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:43,893 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7074 transitions. [2020-01-16 18:32:43,893 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:43,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7074 transitions. [2020-01-16 18:32:43,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:43,895 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:43,895 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 18:32:43,895 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 18:32:43,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:43,896 INFO L82 PathProgramCache]: Analyzing trace with hash 62489616, now seen corresponding path program 107 times [2020-01-16 18:32:43,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:43,896 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616684250] [2020-01-16 18:32:43,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:44,401 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 18:32:44,529 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:44,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:44,537 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616684250] [2020-01-16 18:32:44,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:44,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:44,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952977332] [2020-01-16 18:32:44,537 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:44,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:44,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:44,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:44,538 INFO L87 Difference]: Start difference. First operand 1582 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:32:44,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:44,702 INFO L93 Difference]: Finished difference Result 3036 states and 11970 transitions. [2020-01-16 18:32:44,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:44,703 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:44,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:44,714 INFO L225 Difference]: With dead ends: 3036 [2020-01-16 18:32:44,714 INFO L226 Difference]: Without dead ends: 3016 [2020-01-16 18:32:44,714 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:32:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2020-01-16 18:32:44,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 1590. [2020-01-16 18:32:44,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:32:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7088 transitions. [2020-01-16 18:32:44,791 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7088 transitions. Word has length 28 [2020-01-16 18:32:44,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:44,791 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7088 transitions. [2020-01-16 18:32:44,791 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:44,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7088 transitions. [2020-01-16 18:32:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:44,795 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:44,795 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:44,795 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 18:32:44,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:44,795 INFO L82 PathProgramCache]: Analyzing trace with hash 235737308, now seen corresponding path program 108 times [2020-01-16 18:32:44,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:44,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226729416] [2020-01-16 18:32:44,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:45,397 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:45,404 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 18:32:45,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226729416] [2020-01-16 18:32:45,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:45,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:45,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35267709] [2020-01-16 18:32:45,405 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:45,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:45,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:45,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:45,405 INFO L87 Difference]: Start difference. First operand 1590 states and 7088 transitions. Second operand 11 states. [2020-01-16 18:32:45,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:45,629 INFO L93 Difference]: Finished difference Result 3033 states and 11957 transitions. [2020-01-16 18:32:45,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:45,630 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:45,638 INFO L225 Difference]: With dead ends: 3033 [2020-01-16 18:32:45,638 INFO L226 Difference]: Without dead ends: 3001 [2020-01-16 18:32:45,639 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 18:32:45,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-01-16 18:32:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 1575. [2020-01-16 18:32:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:32:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7054 transitions. [2020-01-16 18:32:45,704 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7054 transitions. Word has length 28 [2020-01-16 18:32:45,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:45,705 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7054 transitions. [2020-01-16 18:32:45,705 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:45,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7054 transitions. [2020-01-16 18:32:45,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:45,707 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:45,707 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 18:32:45,707 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 18:32:45,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:45,707 INFO L82 PathProgramCache]: Analyzing trace with hash 936605404, now seen corresponding path program 109 times [2020-01-16 18:32:45,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:45,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359276389] [2020-01-16 18:32:45,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:46,191 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:32:46,322 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:46,329 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 18:32:46,329 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359276389] [2020-01-16 18:32:46,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:46,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:46,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626320218] [2020-01-16 18:32:46,329 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:46,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:46,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:46,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:46,330 INFO L87 Difference]: Start difference. First operand 1575 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:32:46,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:46,591 INFO L93 Difference]: Finished difference Result 3022 states and 11949 transitions. [2020-01-16 18:32:46,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:46,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:46,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:46,599 INFO L225 Difference]: With dead ends: 3022 [2020-01-16 18:32:46,599 INFO L226 Difference]: Without dead ends: 3006 [2020-01-16 18:32:46,600 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:32:46,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2020-01-16 18:32:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1587. [2020-01-16 18:32:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:32:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7088 transitions. [2020-01-16 18:32:46,669 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7088 transitions. Word has length 28 [2020-01-16 18:32:46,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:46,670 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7088 transitions. [2020-01-16 18:32:46,670 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:46,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7088 transitions. [2020-01-16 18:32:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:46,672 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:46,672 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:46,673 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 18:32:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:46,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1868956896, now seen corresponding path program 110 times [2020-01-16 18:32:46,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:46,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396698246] [2020-01-16 18:32:46,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:47,316 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:32:47,323 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 18:32:47,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396698246] [2020-01-16 18:32:47,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:47,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:47,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257346602] [2020-01-16 18:32:47,324 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:47,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:47,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:47,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:47,324 INFO L87 Difference]: Start difference. First operand 1587 states and 7088 transitions. Second operand 11 states. [2020-01-16 18:32:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:47,575 INFO L93 Difference]: Finished difference Result 3024 states and 11947 transitions. [2020-01-16 18:32:47,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:47,576 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:47,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:47,583 INFO L225 Difference]: With dead ends: 3024 [2020-01-16 18:32:47,583 INFO L226 Difference]: Without dead ends: 3000 [2020-01-16 18:32:47,583 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 18:32:47,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-01-16 18:32:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1581. [2020-01-16 18:32:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:32:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7071 transitions. [2020-01-16 18:32:47,650 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7071 transitions. Word has length 28 [2020-01-16 18:32:47,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:47,650 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7071 transitions. [2020-01-16 18:32:47,650 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7071 transitions. [2020-01-16 18:32:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:47,653 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:47,653 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 18:32:47,653 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 18:32:47,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:47,653 INFO L82 PathProgramCache]: Analyzing trace with hash 401375602, now seen corresponding path program 111 times [2020-01-16 18:32:47,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:47,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996526224] [2020-01-16 18:32:47,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:48,151 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:32:48,278 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:32:48,286 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 18:32:48,286 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996526224] [2020-01-16 18:32:48,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:48,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:48,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096459429] [2020-01-16 18:32:48,287 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:48,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:48,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:48,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:48,287 INFO L87 Difference]: Start difference. First operand 1581 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:32:48,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:48,491 INFO L93 Difference]: Finished difference Result 3021 states and 11941 transitions. [2020-01-16 18:32:48,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:48,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:48,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:48,500 INFO L225 Difference]: With dead ends: 3021 [2020-01-16 18:32:48,500 INFO L226 Difference]: Without dead ends: 3005 [2020-01-16 18:32:48,501 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 18:32:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-01-16 18:32:48,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1587. [2020-01-16 18:32:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:32:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7082 transitions. [2020-01-16 18:32:48,569 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7082 transitions. Word has length 28 [2020-01-16 18:32:48,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:48,569 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7082 transitions. [2020-01-16 18:32:48,569 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:48,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7082 transitions. [2020-01-16 18:32:48,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:48,571 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:48,572 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:48,572 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 18:32:48,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:48,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1319325792, now seen corresponding path program 112 times [2020-01-16 18:32:48,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:48,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733531102] [2020-01-16 18:32:48,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:49,203 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:32:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:49,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733531102] [2020-01-16 18:32:49,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:49,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:49,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772210388] [2020-01-16 18:32:49,211 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:49,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:49,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:49,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:49,212 INFO L87 Difference]: Start difference. First operand 1587 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:32:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:49,418 INFO L93 Difference]: Finished difference Result 3022 states and 11937 transitions. [2020-01-16 18:32:49,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:49,418 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:49,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:49,425 INFO L225 Difference]: With dead ends: 3022 [2020-01-16 18:32:49,426 INFO L226 Difference]: Without dead ends: 2999 [2020-01-16 18:32:49,426 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 18:32:49,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-01-16 18:32:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 1581. [2020-01-16 18:32:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:32:49,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7065 transitions. [2020-01-16 18:32:49,493 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7065 transitions. Word has length 28 [2020-01-16 18:32:49,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:49,494 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7065 transitions. [2020-01-16 18:32:49,494 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:49,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7065 transitions. [2020-01-16 18:32:49,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:49,496 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:49,496 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 18:32:49,496 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 18:32:49,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:49,497 INFO L82 PathProgramCache]: Analyzing trace with hash 817695218, now seen corresponding path program 113 times [2020-01-16 18:32:49,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:49,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041902669] [2020-01-16 18:32:49,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:49,998 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:32:50,124 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 18:32:50,132 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 18:32:50,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041902669] [2020-01-16 18:32:50,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:50,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:50,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024931703] [2020-01-16 18:32:50,132 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:50,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:50,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:50,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:50,133 INFO L87 Difference]: Start difference. First operand 1581 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:32:50,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:50,368 INFO L93 Difference]: Finished difference Result 3026 states and 11946 transitions. [2020-01-16 18:32:50,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:50,368 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:50,376 INFO L225 Difference]: With dead ends: 3026 [2020-01-16 18:32:50,376 INFO L226 Difference]: Without dead ends: 3008 [2020-01-16 18:32:50,376 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 18:32:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-01-16 18:32:50,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1588. [2020-01-16 18:32:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:32:50,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7078 transitions. [2020-01-16 18:32:50,443 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7078 transitions. Word has length 28 [2020-01-16 18:32:50,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:50,443 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7078 transitions. [2020-01-16 18:32:50,443 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:50,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7078 transitions. [2020-01-16 18:32:50,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:50,445 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:50,445 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:50,445 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 18:32:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:50,446 INFO L82 PathProgramCache]: Analyzing trace with hash 246240412, now seen corresponding path program 114 times [2020-01-16 18:32:50,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:50,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079413615] [2020-01-16 18:32:50,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:50,941 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:32:51,066 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:32:51,073 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 18:32:51,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079413615] [2020-01-16 18:32:51,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:51,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:51,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135623127] [2020-01-16 18:32:51,074 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:51,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:51,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:51,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:51,074 INFO L87 Difference]: Start difference. First operand 1588 states and 7078 transitions. Second operand 11 states. [2020-01-16 18:32:51,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:51,302 INFO L93 Difference]: Finished difference Result 3025 states and 11937 transitions. [2020-01-16 18:32:51,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:51,303 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:51,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:51,310 INFO L225 Difference]: With dead ends: 3025 [2020-01-16 18:32:51,311 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 18:32:51,311 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 18:32:51,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 18:32:51,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1575. [2020-01-16 18:32:51,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:32:51,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7048 transitions. [2020-01-16 18:32:51,378 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7048 transitions. Word has length 28 [2020-01-16 18:32:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:51,379 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7048 transitions. [2020-01-16 18:32:51,379 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:51,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7048 transitions. [2020-01-16 18:32:51,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:51,381 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:51,381 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:51,381 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 18:32:51,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:51,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1691811006, now seen corresponding path program 115 times [2020-01-16 18:32:51,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:51,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514011471] [2020-01-16 18:32:51,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:51,902 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 32 [2020-01-16 18:32:52,055 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:32:52,062 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 18:32:52,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514011471] [2020-01-16 18:32:52,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:52,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:52,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086260265] [2020-01-16 18:32:52,063 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:52,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:52,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:52,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:52,064 INFO L87 Difference]: Start difference. First operand 1575 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:32:52,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:52,253 INFO L93 Difference]: Finished difference Result 3048 states and 11997 transitions. [2020-01-16 18:32:52,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:52,254 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:52,262 INFO L225 Difference]: With dead ends: 3048 [2020-01-16 18:32:52,262 INFO L226 Difference]: Without dead ends: 3028 [2020-01-16 18:32:52,262 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 18:32:52,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2020-01-16 18:32:52,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 1595. [2020-01-16 18:32:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1595 states. [2020-01-16 18:32:52,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 7098 transitions. [2020-01-16 18:32:52,329 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 7098 transitions. Word has length 28 [2020-01-16 18:32:52,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:52,329 INFO L478 AbstractCegarLoop]: Abstraction has 1595 states and 7098 transitions. [2020-01-16 18:32:52,329 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:52,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 7098 transitions. [2020-01-16 18:32:52,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:52,331 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:52,331 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:52,331 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 18:32:52,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:52,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1858453792, now seen corresponding path program 116 times [2020-01-16 18:32:52,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:52,332 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826434025] [2020-01-16 18:32:52,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:52,971 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 18:32:52,978 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 18:32:52,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826434025] [2020-01-16 18:32:52,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:52,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:52,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518046485] [2020-01-16 18:32:52,979 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:52,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:52,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:52,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:52,979 INFO L87 Difference]: Start difference. First operand 1595 states and 7098 transitions. Second operand 11 states. [2020-01-16 18:32:53,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:53,186 INFO L93 Difference]: Finished difference Result 3046 states and 11985 transitions. [2020-01-16 18:32:53,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:53,186 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:53,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:53,193 INFO L225 Difference]: With dead ends: 3046 [2020-01-16 18:32:53,193 INFO L226 Difference]: Without dead ends: 3018 [2020-01-16 18:32:53,194 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 18:32:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2020-01-16 18:32:53,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1585. [2020-01-16 18:32:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:32:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7072 transitions. [2020-01-16 18:32:53,260 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7072 transitions. Word has length 28 [2020-01-16 18:32:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:53,260 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7072 transitions. [2020-01-16 18:32:53,260 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:53,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7072 transitions. [2020-01-16 18:32:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:53,262 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:53,262 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 18:32:53,262 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 18:32:53,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:53,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1156581204, now seen corresponding path program 117 times [2020-01-16 18:32:53,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:53,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185736662] [2020-01-16 18:32:53,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:53,787 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 18:32:53,913 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:53,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185736662] [2020-01-16 18:32:53,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:53,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:53,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471188199] [2020-01-16 18:32:53,922 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:53,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:53,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:53,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:53,922 INFO L87 Difference]: Start difference. First operand 1585 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:32:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:54,108 INFO L93 Difference]: Finished difference Result 3045 states and 11982 transitions. [2020-01-16 18:32:54,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:54,108 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:54,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:54,116 INFO L225 Difference]: With dead ends: 3045 [2020-01-16 18:32:54,116 INFO L226 Difference]: Without dead ends: 3025 [2020-01-16 18:32:54,116 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 18:32:54,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2020-01-16 18:32:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 1593. [2020-01-16 18:32:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 18:32:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7086 transitions. [2020-01-16 18:32:54,183 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7086 transitions. Word has length 28 [2020-01-16 18:32:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:54,184 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7086 transitions. [2020-01-16 18:32:54,184 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7086 transitions. [2020-01-16 18:32:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:54,186 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:54,186 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 18:32:54,186 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 18:32:54,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:54,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1329828896, now seen corresponding path program 118 times [2020-01-16 18:32:54,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:54,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650676862] [2020-01-16 18:32:54,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:54,877 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:54,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:54,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650676862] [2020-01-16 18:32:54,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:54,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:54,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252614910] [2020-01-16 18:32:54,885 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:54,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:54,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:54,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:54,886 INFO L87 Difference]: Start difference. First operand 1593 states and 7086 transitions. Second operand 11 states. [2020-01-16 18:32:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:55,117 INFO L93 Difference]: Finished difference Result 3042 states and 11969 transitions. [2020-01-16 18:32:55,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:55,118 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:55,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:55,125 INFO L225 Difference]: With dead ends: 3042 [2020-01-16 18:32:55,125 INFO L226 Difference]: Without dead ends: 3017 [2020-01-16 18:32:55,126 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 18:32:55,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-01-16 18:32:55,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 1585. [2020-01-16 18:32:55,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:32:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7064 transitions. [2020-01-16 18:32:55,193 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7064 transitions. Word has length 28 [2020-01-16 18:32:55,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:55,193 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7064 transitions. [2020-01-16 18:32:55,193 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:55,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7064 transitions. [2020-01-16 18:32:55,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:55,196 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:55,196 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 18:32:55,196 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 18:32:55,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:55,196 INFO L82 PathProgramCache]: Analyzing trace with hash -782742636, now seen corresponding path program 119 times [2020-01-16 18:32:55,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:55,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716931069] [2020-01-16 18:32:55,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:55,817 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 18:32:55,825 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 18:32:55,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716931069] [2020-01-16 18:32:55,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:55,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:55,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288947085] [2020-01-16 18:32:55,826 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:55,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:55,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:55,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:55,826 INFO L87 Difference]: Start difference. First operand 1585 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:32:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:56,075 INFO L93 Difference]: Finished difference Result 3040 states and 11966 transitions. [2020-01-16 18:32:56,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:56,076 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:56,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:56,084 INFO L225 Difference]: With dead ends: 3040 [2020-01-16 18:32:56,084 INFO L226 Difference]: Without dead ends: 3022 [2020-01-16 18:32:56,084 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 18:32:56,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2020-01-16 18:32:56,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 1592. [2020-01-16 18:32:56,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1592 states. [2020-01-16 18:32:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 7077 transitions. [2020-01-16 18:32:56,150 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 7077 transitions. Word has length 28 [2020-01-16 18:32:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:56,150 INFO L478 AbstractCegarLoop]: Abstraction has 1592 states and 7077 transitions. [2020-01-16 18:32:56,150 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 7077 transitions. [2020-01-16 18:32:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:56,153 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:56,153 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:56,153 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 18:32:56,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:56,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1354197442, now seen corresponding path program 120 times [2020-01-16 18:32:56,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:56,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980935948] [2020-01-16 18:32:56,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:56,804 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:32:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:32:56,810 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980935948] [2020-01-16 18:32:56,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:56,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:56,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565549315] [2020-01-16 18:32:56,811 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:56,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:56,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:56,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:56,812 INFO L87 Difference]: Start difference. First operand 1592 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:32:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:57,106 INFO L93 Difference]: Finished difference Result 3039 states and 11957 transitions. [2020-01-16 18:32:57,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:57,107 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:57,115 INFO L225 Difference]: With dead ends: 3039 [2020-01-16 18:32:57,115 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:32:57,116 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 18:32:57,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:32:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1555. [2020-01-16 18:32:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 18:32:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 7003 transitions. [2020-01-16 18:32:57,206 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 7003 transitions. Word has length 28 [2020-01-16 18:32:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:57,206 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 7003 transitions. [2020-01-16 18:32:57,206 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 7003 transitions. [2020-01-16 18:32:57,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:57,209 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:57,209 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:57,209 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 18:32:57,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:57,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1151658060, now seen corresponding path program 121 times [2020-01-16 18:32:57,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:57,210 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451069942] [2020-01-16 18:32:57,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:57,811 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:32:57,818 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 18:32:57,818 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451069942] [2020-01-16 18:32:57,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:57,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:57,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282165119] [2020-01-16 18:32:57,819 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:57,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:57,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:57,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:57,820 INFO L87 Difference]: Start difference. First operand 1555 states and 7003 transitions. Second operand 11 states. [2020-01-16 18:32:58,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:58,115 INFO L93 Difference]: Finished difference Result 2966 states and 11803 transitions. [2020-01-16 18:32:58,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:58,115 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:58,123 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:32:58,123 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:32:58,124 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 18:32:58,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:32:58,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1579. [2020-01-16 18:32:58,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:32:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7097 transitions. [2020-01-16 18:32:58,192 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7097 transitions. Word has length 28 [2020-01-16 18:32:58,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:58,192 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7097 transitions. [2020-01-16 18:32:58,192 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7097 transitions. [2020-01-16 18:32:58,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:58,195 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:58,195 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:58,195 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 18:32:58,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:58,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1896360558, now seen corresponding path program 122 times [2020-01-16 18:32:58,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:58,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859205535] [2020-01-16 18:32:58,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:58,796 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:32:58,803 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 18:32:58,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859205535] [2020-01-16 18:32:58,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:58,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:58,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057974344] [2020-01-16 18:32:58,804 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:58,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:58,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:58,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:58,804 INFO L87 Difference]: Start difference. First operand 1579 states and 7097 transitions. Second operand 11 states. [2020-01-16 18:32:59,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:32:59,074 INFO L93 Difference]: Finished difference Result 2967 states and 11800 transitions. [2020-01-16 18:32:59,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:32:59,075 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:32:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:32:59,082 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:32:59,082 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:32:59,082 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 18:32:59,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:32:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1574. [2020-01-16 18:32:59,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:32:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7083 transitions. [2020-01-16 18:32:59,148 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7083 transitions. Word has length 28 [2020-01-16 18:32:59,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:32:59,148 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7083 transitions. [2020-01-16 18:32:59,148 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:32:59,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7083 transitions. [2020-01-16 18:32:59,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:32:59,151 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:32:59,151 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:32:59,151 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 18:32:59,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:32:59,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1532368278, now seen corresponding path program 123 times [2020-01-16 18:32:59,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:32:59,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274804785] [2020-01-16 18:32:59,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:32:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:32:59,761 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:32:59,768 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 18:32:59,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274804785] [2020-01-16 18:32:59,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:32:59,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:32:59,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195838710] [2020-01-16 18:32:59,768 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:32:59,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:32:59,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:32:59,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:32:59,769 INFO L87 Difference]: Start difference. First operand 1574 states and 7083 transitions. Second operand 11 states. [2020-01-16 18:33:00,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:00,035 INFO L93 Difference]: Finished difference Result 2971 states and 11807 transitions. [2020-01-16 18:33:00,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:00,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:00,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:00,043 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 18:33:00,043 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:33:00,043 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 18:33:00,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:33:00,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1580. [2020-01-16 18:33:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:33:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7094 transitions. [2020-01-16 18:33:00,110 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7094 transitions. Word has length 28 [2020-01-16 18:33:00,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:00,110 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7094 transitions. [2020-01-16 18:33:00,110 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:00,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7094 transitions. [2020-01-16 18:33:00,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:00,112 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:00,112 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:00,112 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 18:33:00,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:00,113 INFO L82 PathProgramCache]: Analyzing trace with hash -42963282, now seen corresponding path program 124 times [2020-01-16 18:33:00,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:00,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192633601] [2020-01-16 18:33:00,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:00,600 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:33:00,725 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:33:00,732 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 18:33:00,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192633601] [2020-01-16 18:33:00,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:00,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:00,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618155634] [2020-01-16 18:33:00,732 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:00,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:00,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:00,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:00,733 INFO L87 Difference]: Start difference. First operand 1580 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:33:00,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:00,963 INFO L93 Difference]: Finished difference Result 2976 states and 11811 transitions. [2020-01-16 18:33:00,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:00,964 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:00,972 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:33:00,972 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:33:00,972 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 18:33:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:33:01,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1574. [2020-01-16 18:33:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:33:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7077 transitions. [2020-01-16 18:33:01,040 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7077 transitions. Word has length 28 [2020-01-16 18:33:01,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:01,040 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7077 transitions. [2020-01-16 18:33:01,040 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:01,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7077 transitions. [2020-01-16 18:33:01,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:01,042 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:01,042 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 18:33:01,042 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 18:33:01,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:01,043 INFO L82 PathProgramCache]: Analyzing trace with hash 823275178, now seen corresponding path program 125 times [2020-01-16 18:33:01,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:01,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388140650] [2020-01-16 18:33:01,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:01,652 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:01,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388140650] [2020-01-16 18:33:01,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:01,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:01,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459641926] [2020-01-16 18:33:01,659 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:01,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:01,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:01,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:01,660 INFO L87 Difference]: Start difference. First operand 1574 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:33:01,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:01,949 INFO L93 Difference]: Finished difference Result 2974 states and 11808 transitions. [2020-01-16 18:33:01,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:01,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:01,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:01,958 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:33:01,958 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:33:01,958 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 18:33:02,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:33:02,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1581. [2020-01-16 18:33:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:33:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7090 transitions. [2020-01-16 18:33:02,029 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7090 transitions. Word has length 28 [2020-01-16 18:33:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:02,029 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7090 transitions. [2020-01-16 18:33:02,029 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:02,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7090 transitions. [2020-01-16 18:33:02,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:02,032 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:02,032 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:02,032 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 18:33:02,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:02,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1567977676, now seen corresponding path program 126 times [2020-01-16 18:33:02,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:02,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434061644] [2020-01-16 18:33:02,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:02,559 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:33:02,688 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:02,695 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 18:33:02,695 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434061644] [2020-01-16 18:33:02,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:02,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:02,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653634241] [2020-01-16 18:33:02,696 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:02,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:02,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:02,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:02,696 INFO L87 Difference]: Start difference. First operand 1581 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:33:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:02,902 INFO L93 Difference]: Finished difference Result 2978 states and 11809 transitions. [2020-01-16 18:33:02,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:02,903 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:02,910 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:33:02,911 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:33:02,911 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 18:33:02,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:33:02,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1568. [2020-01-16 18:33:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:33:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7060 transitions. [2020-01-16 18:33:02,979 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7060 transitions. Word has length 28 [2020-01-16 18:33:02,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:02,979 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7060 transitions. [2020-01-16 18:33:02,979 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:02,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7060 transitions. [2020-01-16 18:33:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:02,981 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:02,981 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 18:33:02,982 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 18:33:02,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:02,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1871670534, now seen corresponding path program 127 times [2020-01-16 18:33:02,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:02,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513279466] [2020-01-16 18:33:02,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:03,574 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:03,580 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 18:33:03,581 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513279466] [2020-01-16 18:33:03,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:03,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:03,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971090277] [2020-01-16 18:33:03,582 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:03,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:03,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:03,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:03,582 INFO L87 Difference]: Start difference. First operand 1568 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:33:03,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:03,831 INFO L93 Difference]: Finished difference Result 2961 states and 11787 transitions. [2020-01-16 18:33:03,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:03,832 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:03,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:03,840 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:33:03,840 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:33:03,841 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 18:33:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:33:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1578. [2020-01-16 18:33:03,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:33:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7088 transitions. [2020-01-16 18:33:03,926 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7088 transitions. Word has length 28 [2020-01-16 18:33:03,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:03,926 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7088 transitions. [2020-01-16 18:33:03,926 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:03,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7088 transitions. [2020-01-16 18:33:03,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:03,929 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:03,929 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 18:33:03,929 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 18:33:03,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:03,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1678594264, now seen corresponding path program 128 times [2020-01-16 18:33:03,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:03,929 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36451343] [2020-01-16 18:33:03,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:04,537 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:04,544 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 18:33:04,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36451343] [2020-01-16 18:33:04,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:04,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:04,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478150608] [2020-01-16 18:33:04,545 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:04,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:04,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:04,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:04,546 INFO L87 Difference]: Start difference. First operand 1578 states and 7088 transitions. Second operand 11 states. [2020-01-16 18:33:04,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:04,798 INFO L93 Difference]: Finished difference Result 2962 states and 11784 transitions. [2020-01-16 18:33:04,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:04,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:04,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:04,806 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:33:04,807 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:33:04,807 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 18:33:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:33:04,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1573. [2020-01-16 18:33:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:33:04,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7074 transitions. [2020-01-16 18:33:04,873 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7074 transitions. Word has length 28 [2020-01-16 18:33:04,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:04,873 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7074 transitions. [2020-01-16 18:33:04,873 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:04,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7074 transitions. [2020-01-16 18:33:04,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:04,875 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:04,875 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 18:33:04,875 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 18:33:04,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:04,876 INFO L82 PathProgramCache]: Analyzing trace with hash 798585154, now seen corresponding path program 129 times [2020-01-16 18:33:04,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:04,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252559036] [2020-01-16 18:33:04,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:05,339 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:33:05,468 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:05,475 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 18:33:05,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252559036] [2020-01-16 18:33:05,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:05,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:05,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654939958] [2020-01-16 18:33:05,475 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:05,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:05,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:05,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:05,476 INFO L87 Difference]: Start difference. First operand 1573 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:33:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:05,769 INFO L93 Difference]: Finished difference Result 2963 states and 11786 transitions. [2020-01-16 18:33:05,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:05,769 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:05,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:05,776 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:33:05,776 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:33:05,777 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 18:33:05,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:33:05,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1578. [2020-01-16 18:33:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:33:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7083 transitions. [2020-01-16 18:33:05,844 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7083 transitions. Word has length 28 [2020-01-16 18:33:05,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:05,845 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7083 transitions. [2020-01-16 18:33:05,845 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:05,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7083 transitions. [2020-01-16 18:33:05,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:05,847 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:05,847 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 18:33:05,847 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 18:33:05,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:05,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1262274648, now seen corresponding path program 130 times [2020-01-16 18:33:05,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:05,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395569903] [2020-01-16 18:33:05,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:06,435 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:06,442 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 18:33:06,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395569903] [2020-01-16 18:33:06,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:06,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:06,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933141454] [2020-01-16 18:33:06,443 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:06,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:06,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:06,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:06,443 INFO L87 Difference]: Start difference. First operand 1578 states and 7083 transitions. Second operand 11 states. [2020-01-16 18:33:06,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:06,667 INFO L93 Difference]: Finished difference Result 2966 states and 11787 transitions. [2020-01-16 18:33:06,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:06,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:06,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:06,675 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:33:06,675 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 18:33:06,675 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 18:33:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 18:33:06,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1573. [2020-01-16 18:33:06,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:33:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7069 transitions. [2020-01-16 18:33:06,741 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7069 transitions. Word has length 28 [2020-01-16 18:33:06,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:06,741 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7069 transitions. [2020-01-16 18:33:06,741 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:06,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7069 transitions. [2020-01-16 18:33:06,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:06,743 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:06,743 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:06,743 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 18:33:06,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:06,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1140738686, now seen corresponding path program 131 times [2020-01-16 18:33:06,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:06,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688253244] [2020-01-16 18:33:06,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:07,222 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:33:07,351 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:07,357 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 18:33:07,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688253244] [2020-01-16 18:33:07,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:07,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:07,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388755762] [2020-01-16 18:33:07,358 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:07,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:07,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:07,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:07,359 INFO L87 Difference]: Start difference. First operand 1573 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:33:07,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:07,568 INFO L93 Difference]: Finished difference Result 2966 states and 11788 transitions. [2020-01-16 18:33:07,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:07,568 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:07,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:07,576 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:33:07,577 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:33:07,577 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 18:33:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:33:07,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1579. [2020-01-16 18:33:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:33:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7080 transitions. [2020-01-16 18:33:07,659 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7080 transitions. Word has length 28 [2020-01-16 18:33:07,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:07,659 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7080 transitions. [2020-01-16 18:33:07,659 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:07,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7080 transitions. [2020-01-16 18:33:07,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:07,663 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:07,663 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 18:33:07,663 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 18:33:07,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:07,664 INFO L82 PathProgramCache]: Analyzing trace with hash 348666310, now seen corresponding path program 132 times [2020-01-16 18:33:07,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:07,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839150703] [2020-01-16 18:33:07,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:08,148 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:33:08,275 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:08,283 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 18:33:08,283 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839150703] [2020-01-16 18:33:08,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:08,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:08,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677309438] [2020-01-16 18:33:08,284 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:08,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:08,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:08,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:08,284 INFO L87 Difference]: Start difference. First operand 1579 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:33:08,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:08,476 INFO L93 Difference]: Finished difference Result 2968 states and 11786 transitions. [2020-01-16 18:33:08,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:08,477 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:08,484 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:33:08,485 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:33:08,485 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 18:33:08,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:33:08,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1568. [2020-01-16 18:33:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:33:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7055 transitions. [2020-01-16 18:33:08,551 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7055 transitions. Word has length 28 [2020-01-16 18:33:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:08,551 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7055 transitions. [2020-01-16 18:33:08,551 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7055 transitions. [2020-01-16 18:33:08,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:08,553 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:08,553 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:08,554 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 18:33:08,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:08,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1882173638, now seen corresponding path program 133 times [2020-01-16 18:33:08,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:08,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054237040] [2020-01-16 18:33:08,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:09,152 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:33:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:09,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054237040] [2020-01-16 18:33:09,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:09,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:09,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382543675] [2020-01-16 18:33:09,160 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:09,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:09,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:09,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:09,161 INFO L87 Difference]: Start difference. First operand 1568 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:33:09,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:09,351 INFO L93 Difference]: Finished difference Result 2977 states and 11814 transitions. [2020-01-16 18:33:09,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:09,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:09,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:09,360 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:33:09,360 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:33:09,360 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 18:33:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:33:09,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1581. [2020-01-16 18:33:09,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:33:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7090 transitions. [2020-01-16 18:33:09,426 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7090 transitions. Word has length 28 [2020-01-16 18:33:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:09,426 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7090 transitions. [2020-01-16 18:33:09,426 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7090 transitions. [2020-01-16 18:33:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:09,429 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:09,429 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 18:33:09,429 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 18:33:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:09,429 INFO L82 PathProgramCache]: Analyzing trace with hash -923388662, now seen corresponding path program 134 times [2020-01-16 18:33:09,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:09,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038928915] [2020-01-16 18:33:09,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:09,907 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:33:10,033 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:33:10,040 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 18:33:10,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038928915] [2020-01-16 18:33:10,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:10,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:10,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703080802] [2020-01-16 18:33:10,041 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:10,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:10,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:10,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:10,041 INFO L87 Difference]: Start difference. First operand 1581 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:33:10,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:10,195 INFO L93 Difference]: Finished difference Result 2982 states and 11818 transitions. [2020-01-16 18:33:10,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:10,196 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:10,203 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:33:10,204 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:33:10,204 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 18:33:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:33:10,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1575. [2020-01-16 18:33:10,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:33:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7073 transitions. [2020-01-16 18:33:10,270 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7073 transitions. Word has length 28 [2020-01-16 18:33:10,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:10,271 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7073 transitions. [2020-01-16 18:33:10,271 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:10,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7073 transitions. [2020-01-16 18:33:10,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:10,274 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:10,274 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 18:33:10,274 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 18:33:10,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:10,275 INFO L82 PathProgramCache]: Analyzing trace with hash -801852700, now seen corresponding path program 135 times [2020-01-16 18:33:10,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:10,275 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39300607] [2020-01-16 18:33:10,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:10,866 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:10,874 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 18:33:10,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39300607] [2020-01-16 18:33:10,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:10,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:10,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726592187] [2020-01-16 18:33:10,875 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:10,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:10,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:10,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:10,875 INFO L87 Difference]: Start difference. First operand 1575 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:33:11,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:11,067 INFO L93 Difference]: Finished difference Result 2974 states and 11803 transitions. [2020-01-16 18:33:11,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:11,068 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:11,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:11,075 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:33:11,076 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:33:11,076 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 18:33:11,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:33:11,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1580. [2020-01-16 18:33:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:33:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7082 transitions. [2020-01-16 18:33:11,142 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7082 transitions. Word has length 28 [2020-01-16 18:33:11,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:11,142 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7082 transitions. [2020-01-16 18:33:11,142 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7082 transitions. [2020-01-16 18:33:11,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:11,144 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:11,144 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 18:33:11,145 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 18:33:11,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:11,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1432254794, now seen corresponding path program 136 times [2020-01-16 18:33:11,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:11,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392071522] [2020-01-16 18:33:11,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:11,737 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:11,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392071522] [2020-01-16 18:33:11,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:11,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:11,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303806998] [2020-01-16 18:33:11,744 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:11,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:11,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:11,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:11,745 INFO L87 Difference]: Start difference. First operand 1580 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:33:11,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:11,936 INFO L93 Difference]: Finished difference Result 2977 states and 11804 transitions. [2020-01-16 18:33:11,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:11,937 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:11,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:11,945 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:33:11,945 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:33:11,945 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 18:33:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:33:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1575. [2020-01-16 18:33:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:33:12,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7068 transitions. [2020-01-16 18:33:12,011 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7068 transitions. Word has length 28 [2020-01-16 18:33:12,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:12,011 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7068 transitions. [2020-01-16 18:33:12,011 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7068 transitions. [2020-01-16 18:33:12,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:12,014 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:12,014 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:12,014 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 18:33:12,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:12,014 INFO L82 PathProgramCache]: Analyzing trace with hash -385533084, now seen corresponding path program 137 times [2020-01-16 18:33:12,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:12,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007477031] [2020-01-16 18:33:12,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:12,411 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 27 [2020-01-16 18:33:12,537 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:33:12,665 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:33:12,671 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 18:33:12,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007477031] [2020-01-16 18:33:12,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:12,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:12,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543968508] [2020-01-16 18:33:12,672 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:12,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:12,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:12,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:12,673 INFO L87 Difference]: Start difference. First operand 1575 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:33:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:12,825 INFO L93 Difference]: Finished difference Result 2989 states and 11828 transitions. [2020-01-16 18:33:12,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:12,825 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:12,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:12,832 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 18:33:12,832 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 18:33:12,833 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 18:33:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 18:33:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1585. [2020-01-16 18:33:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:33:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7085 transitions. [2020-01-16 18:33:12,899 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7085 transitions. Word has length 28 [2020-01-16 18:33:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:12,899 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7085 transitions. [2020-01-16 18:33:12,899 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7085 transitions. [2020-01-16 18:33:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:12,901 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:12,901 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:12,901 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 18:33:12,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:12,902 INFO L82 PathProgramCache]: Analyzing trace with hash 359169414, now seen corresponding path program 138 times [2020-01-16 18:33:12,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:12,902 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85882664] [2020-01-16 18:33:12,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:13,518 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:13,526 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85882664] [2020-01-16 18:33:13,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:13,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:13,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190149962] [2020-01-16 18:33:13,526 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:13,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:13,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:13,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:13,527 INFO L87 Difference]: Start difference. First operand 1585 states and 7085 transitions. Second operand 11 states. [2020-01-16 18:33:13,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:13,748 INFO L93 Difference]: Finished difference Result 2987 states and 11816 transitions. [2020-01-16 18:33:13,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:13,748 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:13,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:13,756 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 18:33:13,756 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:33:13,756 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 18:33:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:33:13,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1568. [2020-01-16 18:33:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:33:13,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7048 transitions. [2020-01-16 18:33:13,824 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7048 transitions. Word has length 28 [2020-01-16 18:33:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:13,824 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7048 transitions. [2020-01-16 18:33:13,824 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:13,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7048 transitions. [2020-01-16 18:33:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:13,826 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:13,826 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:13,826 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 18:33:13,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:13,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1657588056, now seen corresponding path program 139 times [2020-01-16 18:33:13,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:13,827 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860883662] [2020-01-16 18:33:13,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:14,438 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:14,445 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 18:33:14,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860883662] [2020-01-16 18:33:14,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:14,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:14,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718928173] [2020-01-16 18:33:14,446 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:14,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:14,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:14,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:14,447 INFO L87 Difference]: Start difference. First operand 1568 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:33:14,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:14,636 INFO L93 Difference]: Finished difference Result 2984 states and 11826 transitions. [2020-01-16 18:33:14,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:14,637 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:14,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:14,644 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:33:14,644 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:33:14,644 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 18:33:14,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:33:14,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1583. [2020-01-16 18:33:14,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:33:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7089 transitions. [2020-01-16 18:33:14,712 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7089 transitions. Word has length 28 [2020-01-16 18:33:14,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:14,712 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7089 transitions. [2020-01-16 18:33:14,712 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7089 transitions. [2020-01-16 18:33:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:14,714 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:14,714 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:14,714 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 18:33:14,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:14,715 INFO L82 PathProgramCache]: Analyzing trace with hash -912885558, now seen corresponding path program 140 times [2020-01-16 18:33:14,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:14,715 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256048020] [2020-01-16 18:33:14,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:15,217 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:33:15,345 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:15,352 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 18:33:15,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256048020] [2020-01-16 18:33:15,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:15,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:15,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740231383] [2020-01-16 18:33:15,353 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:15,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:15,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:15,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:15,353 INFO L87 Difference]: Start difference. First operand 1583 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:33:15,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:15,504 INFO L93 Difference]: Finished difference Result 2988 states and 11827 transitions. [2020-01-16 18:33:15,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:15,505 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:15,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:15,511 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:33:15,511 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:33:15,512 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:33:15,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:33:15,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1576. [2020-01-16 18:33:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:33:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7069 transitions. [2020-01-16 18:33:15,579 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7069 transitions. Word has length 28 [2020-01-16 18:33:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:15,579 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7069 transitions. [2020-01-16 18:33:15,579 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7069 transitions. [2020-01-16 18:33:15,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:15,581 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:15,581 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 18:33:15,581 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 18:33:15,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:15,582 INFO L82 PathProgramCache]: Analyzing trace with hash -46647098, now seen corresponding path program 141 times [2020-01-16 18:33:15,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:15,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590342837] [2020-01-16 18:33:15,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:16,055 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:33:16,186 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:16,193 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 18:33:16,194 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590342837] [2020-01-16 18:33:16,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:16,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:16,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825238089] [2020-01-16 18:33:16,194 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:16,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:16,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:16,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:16,195 INFO L87 Difference]: Start difference. First operand 1576 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:33:16,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:16,385 INFO L93 Difference]: Finished difference Result 2981 states and 11814 transitions. [2020-01-16 18:33:16,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:16,385 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:16,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:16,392 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:33:16,392 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:33:16,392 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 18:33:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:33:16,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1582. [2020-01-16 18:33:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:33:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7080 transitions. [2020-01-16 18:33:16,460 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7080 transitions. Word has length 28 [2020-01-16 18:33:16,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:16,461 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7080 transitions. [2020-01-16 18:33:16,461 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7080 transitions. [2020-01-16 18:33:16,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:16,463 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:16,463 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 18:33:16,463 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 18:33:16,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:16,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1442757898, now seen corresponding path program 142 times [2020-01-16 18:33:16,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:16,464 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405579409] [2020-01-16 18:33:16,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:17,073 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:17,081 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405579409] [2020-01-16 18:33:17,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:17,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:17,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896457723] [2020-01-16 18:33:17,081 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:17,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:17,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:17,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:17,082 INFO L87 Difference]: Start difference. First operand 1582 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:33:17,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:17,306 INFO L93 Difference]: Finished difference Result 2983 states and 11812 transitions. [2020-01-16 18:33:17,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:17,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:17,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:17,314 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:33:17,315 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:33:17,315 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 18:33:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:33:17,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1576. [2020-01-16 18:33:17,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:33:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7063 transitions. [2020-01-16 18:33:17,384 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7063 transitions. Word has length 28 [2020-01-16 18:33:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:17,384 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7063 transitions. [2020-01-16 18:33:17,384 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:17,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7063 transitions. [2020-01-16 18:33:17,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:17,386 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:17,386 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 18:33:17,387 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 18:33:17,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:17,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1985970938, now seen corresponding path program 143 times [2020-01-16 18:33:17,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:17,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910203453] [2020-01-16 18:33:17,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:17,907 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:33:18,039 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:18,047 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 18:33:18,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910203453] [2020-01-16 18:33:18,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:18,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:18,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741296200] [2020-01-16 18:33:18,048 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:18,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:18,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:18,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:18,048 INFO L87 Difference]: Start difference. First operand 1576 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:33:18,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:18,211 INFO L93 Difference]: Finished difference Result 2993 states and 11831 transitions. [2020-01-16 18:33:18,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:18,211 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:18,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:18,219 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:33:18,219 INFO L226 Difference]: Without dead ends: 2973 [2020-01-16 18:33:18,220 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 18:33:18,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-01-16 18:33:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1586. [2020-01-16 18:33:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:33:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7080 transitions. [2020-01-16 18:33:18,287 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7080 transitions. Word has length 28 [2020-01-16 18:33:18,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:18,287 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7080 transitions. [2020-01-16 18:33:18,288 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:18,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7080 transitions. [2020-01-16 18:33:18,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:18,290 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:18,290 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 18:33:18,290 INFO L426 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:33:18,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:18,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1241268440, now seen corresponding path program 144 times [2020-01-16 18:33:18,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:18,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181341614] [2020-01-16 18:33:18,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:18,769 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:33:18,898 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:18,905 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 18:33:18,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181341614] [2020-01-16 18:33:18,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:18,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:18,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747076894] [2020-01-16 18:33:18,906 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:18,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:18,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:18,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:18,906 INFO L87 Difference]: Start difference. First operand 1586 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:33:19,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:19,110 INFO L93 Difference]: Finished difference Result 2991 states and 11819 transitions. [2020-01-16 18:33:19,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:19,113 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:19,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:19,119 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:33:19,120 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:33:19,120 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 18:33:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:33:19,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1561. [2020-01-16 18:33:19,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 18:33:19,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7029 transitions. [2020-01-16 18:33:19,185 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7029 transitions. Word has length 28 [2020-01-16 18:33:19,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:19,186 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7029 transitions. [2020-01-16 18:33:19,186 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:19,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7029 transitions. [2020-01-16 18:33:19,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:19,188 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:19,188 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 18:33:19,188 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 18:33:19,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:19,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1398945230, now seen corresponding path program 145 times [2020-01-16 18:33:19,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:19,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991211424] [2020-01-16 18:33:19,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:19,782 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:33:19,789 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 18:33:19,789 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991211424] [2020-01-16 18:33:19,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:19,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:19,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980755082] [2020-01-16 18:33:19,790 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:19,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:19,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:19,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:19,790 INFO L87 Difference]: Start difference. First operand 1561 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:33:19,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:19,990 INFO L93 Difference]: Finished difference Result 2946 states and 11739 transitions. [2020-01-16 18:33:19,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:19,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:19,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:19,997 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:33:19,997 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 18:33:19,998 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 18:33:20,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 18:33:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1577. [2020-01-16 18:33:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:33:20,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7083 transitions. [2020-01-16 18:33:20,064 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7083 transitions. Word has length 28 [2020-01-16 18:33:20,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:20,064 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7083 transitions. [2020-01-16 18:33:20,064 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:20,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7083 transitions. [2020-01-16 18:33:20,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:20,066 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:20,066 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 18:33:20,066 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 18:33:20,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:20,067 INFO L82 PathProgramCache]: Analyzing trace with hash -654242732, now seen corresponding path program 146 times [2020-01-16 18:33:20,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:20,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259463399] [2020-01-16 18:33:20,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:20,661 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:20,668 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 18:33:20,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259463399] [2020-01-16 18:33:20,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:20,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:20,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602785871] [2020-01-16 18:33:20,669 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:20,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:20,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:20,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:20,669 INFO L87 Difference]: Start difference. First operand 1577 states and 7083 transitions. Second operand 11 states. [2020-01-16 18:33:20,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:20,872 INFO L93 Difference]: Finished difference Result 2947 states and 11736 transitions. [2020-01-16 18:33:20,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:20,873 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:20,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:20,880 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:33:20,880 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:33:20,881 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 18:33:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:33:20,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1572. [2020-01-16 18:33:20,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:33:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7069 transitions. [2020-01-16 18:33:20,946 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7069 transitions. Word has length 28 [2020-01-16 18:33:20,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:20,946 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7069 transitions. [2020-01-16 18:33:20,946 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:20,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7069 transitions. [2020-01-16 18:33:20,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:20,949 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:20,949 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 18:33:20,949 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 18:33:20,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:20,949 INFO L82 PathProgramCache]: Analyzing trace with hash 211995728, now seen corresponding path program 147 times [2020-01-16 18:33:20,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:20,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032361553] [2020-01-16 18:33:20,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:21,544 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:33:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:21,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032361553] [2020-01-16 18:33:21,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:21,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:21,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044288006] [2020-01-16 18:33:21,552 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:21,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:21,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:21,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:21,553 INFO L87 Difference]: Start difference. First operand 1572 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:33:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:21,782 INFO L93 Difference]: Finished difference Result 2951 states and 11743 transitions. [2020-01-16 18:33:21,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:21,783 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:21,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:21,789 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:33:21,789 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:33:21,790 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 18:33:21,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:33:21,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1578. [2020-01-16 18:33:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:33:21,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7080 transitions. [2020-01-16 18:33:21,857 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7080 transitions. Word has length 28 [2020-01-16 18:33:21,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:21,857 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7080 transitions. [2020-01-16 18:33:21,857 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:21,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7080 transitions. [2020-01-16 18:33:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:21,859 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:21,859 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:21,859 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 18:33:21,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:21,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1701400724, now seen corresponding path program 148 times [2020-01-16 18:33:21,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:21,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709707626] [2020-01-16 18:33:21,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:22,334 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:33:22,461 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:33:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:22,468 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709707626] [2020-01-16 18:33:22,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:22,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:22,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916916768] [2020-01-16 18:33:22,468 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:22,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:22,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:22,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:22,469 INFO L87 Difference]: Start difference. First operand 1578 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:33:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:22,648 INFO L93 Difference]: Finished difference Result 2956 states and 11747 transitions. [2020-01-16 18:33:22,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:22,649 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:22,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:22,657 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:33:22,657 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:33:22,657 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 18:33:22,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:33:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1572. [2020-01-16 18:33:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:33:22,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7063 transitions. [2020-01-16 18:33:22,722 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7063 transitions. Word has length 28 [2020-01-16 18:33:22,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:22,723 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7063 transitions. [2020-01-16 18:33:22,723 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:22,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7063 transitions. [2020-01-16 18:33:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:22,725 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:22,725 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:22,725 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 18:33:22,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:22,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1727328112, now seen corresponding path program 149 times [2020-01-16 18:33:22,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:22,726 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696117950] [2020-01-16 18:33:22,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:23,333 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:23,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696117950] [2020-01-16 18:33:23,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:23,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:23,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197912701] [2020-01-16 18:33:23,341 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:23,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:23,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:23,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:23,341 INFO L87 Difference]: Start difference. First operand 1572 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:33:23,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:23,537 INFO L93 Difference]: Finished difference Result 2954 states and 11744 transitions. [2020-01-16 18:33:23,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:23,537 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:23,544 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 18:33:23,544 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:33:23,545 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:33:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:33:23,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1579. [2020-01-16 18:33:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:33:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7076 transitions. [2020-01-16 18:33:23,611 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7076 transitions. Word has length 28 [2020-01-16 18:33:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:23,611 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7076 transitions. [2020-01-16 18:33:23,611 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7076 transitions. [2020-01-16 18:33:23,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:23,613 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:23,613 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 18:33:23,614 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 18:33:23,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:23,614 INFO L82 PathProgramCache]: Analyzing trace with hash -982625614, now seen corresponding path program 150 times [2020-01-16 18:33:23,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:23,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515065379] [2020-01-16 18:33:23,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:24,096 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:33:24,226 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:24,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515065379] [2020-01-16 18:33:24,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:24,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:24,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896545304] [2020-01-16 18:33:24,234 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:24,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:24,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:24,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:24,235 INFO L87 Difference]: Start difference. First operand 1579 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:33:24,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:24,397 INFO L93 Difference]: Finished difference Result 2958 states and 11745 transitions. [2020-01-16 18:33:24,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:24,397 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:24,405 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:33:24,406 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:33:24,406 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 18:33:24,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:33:24,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1566. [2020-01-16 18:33:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:33:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7047 transitions. [2020-01-16 18:33:24,476 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7047 transitions. Word has length 28 [2020-01-16 18:33:24,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:24,476 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7047 transitions. [2020-01-16 18:33:24,476 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7047 transitions. [2020-01-16 18:33:24,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:24,479 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:24,479 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:24,479 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 18:33:24,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:24,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1606068116, now seen corresponding path program 151 times [2020-01-16 18:33:24,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:24,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878027136] [2020-01-16 18:33:24,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:25,074 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:33:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:25,081 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878027136] [2020-01-16 18:33:25,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:25,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:25,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341558398] [2020-01-16 18:33:25,082 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:25,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:25,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:25,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:25,082 INFO L87 Difference]: Start difference. First operand 1566 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:33:25,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:25,276 INFO L93 Difference]: Finished difference Result 2933 states and 11703 transitions. [2020-01-16 18:33:25,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:25,276 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:25,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:25,283 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:33:25,283 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 18:33:25,283 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 18:33:25,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 18:33:25,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1575. [2020-01-16 18:33:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:33:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 18:33:25,349 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 18:33:25,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:25,349 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 18:33:25,349 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:25,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 18:33:25,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:25,351 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:25,351 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 18:33:25,351 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 18:33:25,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:25,351 INFO L82 PathProgramCache]: Analyzing trace with hash -861365618, now seen corresponding path program 152 times [2020-01-16 18:33:25,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:25,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434745220] [2020-01-16 18:33:25,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:25,841 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:33:25,970 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:25,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434745220] [2020-01-16 18:33:25,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:25,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:25,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332557759] [2020-01-16 18:33:25,978 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:25,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:25,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:25,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:25,978 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:33:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:26,174 INFO L93 Difference]: Finished difference Result 2934 states and 11700 transitions. [2020-01-16 18:33:26,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:26,174 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:26,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:26,181 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 18:33:26,181 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 18:33:26,182 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 18:33:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 18:33:26,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1570. [2020-01-16 18:33:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:33:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7058 transitions. [2020-01-16 18:33:26,247 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7058 transitions. Word has length 28 [2020-01-16 18:33:26,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:26,247 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7058 transitions. [2020-01-16 18:33:26,247 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7058 transitions. [2020-01-16 18:33:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:26,250 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:26,250 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:26,250 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 18:33:26,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:26,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2141297918, now seen corresponding path program 153 times [2020-01-16 18:33:26,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:26,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398451429] [2020-01-16 18:33:26,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:26,725 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:33:26,851 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:33:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:26,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398451429] [2020-01-16 18:33:26,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:26,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:26,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888786646] [2020-01-16 18:33:26,859 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:26,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:26,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:26,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:26,859 INFO L87 Difference]: Start difference. First operand 1570 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:33:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:27,074 INFO L93 Difference]: Finished difference Result 2930 states and 11692 transitions. [2020-01-16 18:33:27,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:27,075 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:27,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:27,081 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 18:33:27,081 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 18:33:27,082 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 18:33:27,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 18:33:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1574. [2020-01-16 18:33:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:33:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7065 transitions. [2020-01-16 18:33:27,149 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7065 transitions. Word has length 28 [2020-01-16 18:33:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:27,149 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7065 transitions. [2020-01-16 18:33:27,149 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7065 transitions. [2020-01-16 18:33:27,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:27,152 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:27,152 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 18:33:27,152 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 18:33:27,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:27,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1968050226, now seen corresponding path program 154 times [2020-01-16 18:33:27,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:27,152 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290862070] [2020-01-16 18:33:27,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:27,655 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-01-16 18:33:27,786 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:27,793 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 18:33:27,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290862070] [2020-01-16 18:33:27,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:27,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:27,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485194651] [2020-01-16 18:33:27,793 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:27,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:27,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:27,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:27,794 INFO L87 Difference]: Start difference. First operand 1574 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:33:28,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:28,001 INFO L93 Difference]: Finished difference Result 2929 states and 11686 transitions. [2020-01-16 18:33:28,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:28,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:28,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:28,009 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:33:28,009 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:33:28,009 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 18:33:28,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:33:28,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1570. [2020-01-16 18:33:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:33:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7054 transitions. [2020-01-16 18:33:28,077 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7054 transitions. Word has length 28 [2020-01-16 18:33:28,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:28,077 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7054 transitions. [2020-01-16 18:33:28,077 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7054 transitions. [2020-01-16 18:33:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:28,082 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:28,082 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 18:33:28,082 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 18:33:28,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:28,083 INFO L82 PathProgramCache]: Analyzing trace with hash 214345538, now seen corresponding path program 155 times [2020-01-16 18:33:28,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:28,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54291208] [2020-01-16 18:33:28,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:28,556 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:33:28,684 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:33:28,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:28,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54291208] [2020-01-16 18:33:28,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:28,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:28,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758583069] [2020-01-16 18:33:28,692 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:28,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:28,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:28,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:28,692 INFO L87 Difference]: Start difference. First operand 1570 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:33:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:28,916 INFO L93 Difference]: Finished difference Result 2932 states and 11692 transitions. [2020-01-16 18:33:28,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:28,917 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:28,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:28,925 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 18:33:28,925 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:33:28,926 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 18:33:28,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:33:29,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1574. [2020-01-16 18:33:29,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:33:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7061 transitions. [2020-01-16 18:33:29,020 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7061 transitions. Word has length 28 [2020-01-16 18:33:29,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:29,020 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7061 transitions. [2020-01-16 18:33:29,020 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:29,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7061 transitions. [2020-01-16 18:33:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:29,025 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:29,025 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 18:33:29,026 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 18:33:29,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:29,026 INFO L82 PathProgramCache]: Analyzing trace with hash -357109268, now seen corresponding path program 156 times [2020-01-16 18:33:29,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:29,027 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999412329] [2020-01-16 18:33:29,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:29,656 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:33:29,837 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:33:29,849 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 18:33:29,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999412329] [2020-01-16 18:33:29,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:29,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:29,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861715070] [2020-01-16 18:33:29,851 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:29,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:29,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:29,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:29,852 INFO L87 Difference]: Start difference. First operand 1574 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:33:30,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:30,090 INFO L93 Difference]: Finished difference Result 2930 states and 11684 transitions. [2020-01-16 18:33:30,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:30,091 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:30,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:30,098 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 18:33:30,099 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:33:30,099 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 18:33:30,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:33:30,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1566. [2020-01-16 18:33:30,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:33:30,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7043 transitions. [2020-01-16 18:33:30,193 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7043 transitions. Word has length 28 [2020-01-16 18:33:30,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:30,193 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7043 transitions. [2020-01-16 18:33:30,193 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:30,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7043 transitions. [2020-01-16 18:33:30,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:30,195 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:30,195 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:30,196 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 18:33:30,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:30,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1595565012, now seen corresponding path program 157 times [2020-01-16 18:33:30,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:30,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352883622] [2020-01-16 18:33:30,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:30,666 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:33:30,795 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:33:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:30,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352883622] [2020-01-16 18:33:30,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:30,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:30,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084331681] [2020-01-16 18:33:30,802 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:30,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:30,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:30,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:30,803 INFO L87 Difference]: Start difference. First operand 1566 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:33:30,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:30,996 INFO L93 Difference]: Finished difference Result 2945 states and 11722 transitions. [2020-01-16 18:33:30,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:30,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:30,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:31,003 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:33:31,003 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:33:31,004 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 18:33:31,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:33:31,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1577. [2020-01-16 18:33:31,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:33:31,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7072 transitions. [2020-01-16 18:33:31,070 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7072 transitions. Word has length 28 [2020-01-16 18:33:31,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:31,070 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7072 transitions. [2020-01-16 18:33:31,070 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:31,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7072 transitions. [2020-01-16 18:33:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:31,072 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:31,072 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 18:33:31,072 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 18:33:31,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:31,072 INFO L82 PathProgramCache]: Analyzing trace with hash -106160016, now seen corresponding path program 158 times [2020-01-16 18:33:31,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:31,073 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958852638] [2020-01-16 18:33:31,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:31,535 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:33:31,660 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:33:31,667 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 18:33:31,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958852638] [2020-01-16 18:33:31,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:31,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:31,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352212530] [2020-01-16 18:33:31,668 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:31,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:31,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:31,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:31,669 INFO L87 Difference]: Start difference. First operand 1577 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:33:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:31,820 INFO L93 Difference]: Finished difference Result 2950 states and 11726 transitions. [2020-01-16 18:33:31,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:31,821 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:31,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:31,828 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:33:31,829 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:33:31,829 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 18:33:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:33:31,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1571. [2020-01-16 18:33:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:33:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7056 transitions. [2020-01-16 18:33:31,895 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7056 transitions. Word has length 28 [2020-01-16 18:33:31,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:31,895 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7056 transitions. [2020-01-16 18:33:31,895 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:31,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7056 transitions. [2020-01-16 18:33:31,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:31,897 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:31,897 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:31,897 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 18:33:31,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:31,897 INFO L82 PathProgramCache]: Analyzing trace with hash 553231524, now seen corresponding path program 159 times [2020-01-16 18:33:31,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:31,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410370729] [2020-01-16 18:33:31,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:32,487 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:33:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:32,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410370729] [2020-01-16 18:33:32,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:32,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:32,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459489712] [2020-01-16 18:33:32,495 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:32,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:32,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:32,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:32,495 INFO L87 Difference]: Start difference. First operand 1571 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:33:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:32,741 INFO L93 Difference]: Finished difference Result 2937 states and 11701 transitions. [2020-01-16 18:33:32,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:32,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:32,749 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:33:32,749 INFO L226 Difference]: Without dead ends: 2922 [2020-01-16 18:33:32,749 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 18:33:32,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-01-16 18:33:32,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1575. [2020-01-16 18:33:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:33:32,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7063 transitions. [2020-01-16 18:33:32,815 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7063 transitions. Word has length 28 [2020-01-16 18:33:32,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:32,816 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7063 transitions. [2020-01-16 18:33:32,816 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:32,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7063 transitions. [2020-01-16 18:33:32,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:32,818 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:32,818 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 18:33:32,818 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 18:33:32,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:32,818 INFO L82 PathProgramCache]: Analyzing trace with hash 726479216, now seen corresponding path program 160 times [2020-01-16 18:33:32,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:32,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173545660] [2020-01-16 18:33:32,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:33,315 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-01-16 18:33:33,439 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:33,446 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 18:33:33,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173545660] [2020-01-16 18:33:33,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:33,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:33,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405177431] [2020-01-16 18:33:33,447 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:33,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:33,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:33,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:33,448 INFO L87 Difference]: Start difference. First operand 1575 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:33:33,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:33,653 INFO L93 Difference]: Finished difference Result 2936 states and 11695 transitions. [2020-01-16 18:33:33,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:33,654 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:33,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:33,661 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 18:33:33,661 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 18:33:33,661 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 18:33:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 18:33:33,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1571. [2020-01-16 18:33:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:33:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7052 transitions. [2020-01-16 18:33:33,727 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7052 transitions. Word has length 28 [2020-01-16 18:33:33,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:33,727 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7052 transitions. [2020-01-16 18:33:33,727 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:33,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7052 transitions. [2020-01-16 18:33:33,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:33,730 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:33,730 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:33,730 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 18:33:33,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:33,730 INFO L82 PathProgramCache]: Analyzing trace with hash 969551140, now seen corresponding path program 161 times [2020-01-16 18:33:33,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:33,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953958729] [2020-01-16 18:33:33,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:34,200 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:33:34,329 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:34,336 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 18:33:34,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953958729] [2020-01-16 18:33:34,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:34,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:34,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834443491] [2020-01-16 18:33:34,337 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:34,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:34,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:34,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:34,337 INFO L87 Difference]: Start difference. First operand 1571 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:33:34,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:34,512 INFO L93 Difference]: Finished difference Result 2948 states and 11717 transitions. [2020-01-16 18:33:34,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:34,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:34,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:34,525 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:33:34,525 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:33:34,526 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 18:33:34,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:33:34,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1576. [2020-01-16 18:33:34,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:33:34,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7060 transitions. [2020-01-16 18:33:34,612 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7060 transitions. Word has length 28 [2020-01-16 18:33:34,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:34,612 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7060 transitions. [2020-01-16 18:33:34,612 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:34,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7060 transitions. [2020-01-16 18:33:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:34,614 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:34,614 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 18:33:34,614 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 18:33:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:34,615 INFO L82 PathProgramCache]: Analyzing trace with hash -346606164, now seen corresponding path program 162 times [2020-01-16 18:33:34,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:34,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370868886] [2020-01-16 18:33:34,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:35,218 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:35,225 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 18:33:35,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370868886] [2020-01-16 18:33:35,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:35,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:35,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349145503] [2020-01-16 18:33:35,226 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:35,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:35,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:35,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:35,227 INFO L87 Difference]: Start difference. First operand 1576 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:33:35,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:35,477 INFO L93 Difference]: Finished difference Result 2942 states and 11701 transitions. [2020-01-16 18:33:35,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:35,477 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:35,485 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 18:33:35,485 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 18:33:35,485 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 18:33:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 18:33:35,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1566. [2020-01-16 18:33:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:33:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7038 transitions. [2020-01-16 18:33:35,550 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7038 transitions. Word has length 28 [2020-01-16 18:33:35,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:35,550 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7038 transitions. [2020-01-16 18:33:35,550 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7038 transitions. [2020-01-16 18:33:35,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:35,552 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:35,553 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:35,553 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 18:33:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:35,553 INFO L82 PathProgramCache]: Analyzing trace with hash -840359410, now seen corresponding path program 163 times [2020-01-16 18:33:35,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:35,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502442787] [2020-01-16 18:33:35,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:36,156 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:33:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:36,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502442787] [2020-01-16 18:33:36,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:36,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:36,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194081842] [2020-01-16 18:33:36,163 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:36,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:36,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:36,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:36,164 INFO L87 Difference]: Start difference. First operand 1566 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:33:36,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:36,371 INFO L93 Difference]: Finished difference Result 2950 states and 11729 transitions. [2020-01-16 18:33:36,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:36,371 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:36,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:36,379 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:33:36,379 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:33:36,379 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 18:33:36,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:33:36,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1578. [2020-01-16 18:33:36,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:33:36,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7069 transitions. [2020-01-16 18:33:36,445 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7069 transitions. Word has length 28 [2020-01-16 18:33:36,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:36,446 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7069 transitions. [2020-01-16 18:33:36,446 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:36,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7069 transitions. [2020-01-16 18:33:36,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:36,448 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:36,448 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:36,448 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 18:33:36,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:36,448 INFO L82 PathProgramCache]: Analyzing trace with hash -95656912, now seen corresponding path program 164 times [2020-01-16 18:33:36,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:36,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541885646] [2020-01-16 18:33:36,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:36,925 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:33:37,052 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:33:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:37,061 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541885646] [2020-01-16 18:33:37,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:37,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:37,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607375959] [2020-01-16 18:33:37,062 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:37,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:37,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:37,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:37,063 INFO L87 Difference]: Start difference. First operand 1578 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:33:37,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:37,266 INFO L93 Difference]: Finished difference Result 2954 states and 11730 transitions. [2020-01-16 18:33:37,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:37,266 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:37,274 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 18:33:37,274 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 18:33:37,274 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 18:33:37,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 18:33:37,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1571. [2020-01-16 18:33:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:33:37,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7051 transitions. [2020-01-16 18:33:37,343 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7051 transitions. Word has length 28 [2020-01-16 18:33:37,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:37,343 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7051 transitions. [2020-01-16 18:33:37,343 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7051 transitions. [2020-01-16 18:33:37,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:37,345 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:37,345 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 18:33:37,345 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 18:33:37,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:37,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1308437126, now seen corresponding path program 165 times [2020-01-16 18:33:37,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:37,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626879751] [2020-01-16 18:33:37,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:37,806 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:33:37,932 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:33:37,939 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 18:33:37,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626879751] [2020-01-16 18:33:37,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:37,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:37,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448398238] [2020-01-16 18:33:37,940 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:37,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:37,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:37,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:37,940 INFO L87 Difference]: Start difference. First operand 1571 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:33:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:38,148 INFO L93 Difference]: Finished difference Result 2941 states and 11705 transitions. [2020-01-16 18:33:38,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:38,148 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:38,155 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:33:38,155 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:33:38,155 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 18:33:38,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:33:38,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1575. [2020-01-16 18:33:38,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:33:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7058 transitions. [2020-01-16 18:33:38,247 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7058 transitions. Word has length 28 [2020-01-16 18:33:38,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:38,247 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7058 transitions. [2020-01-16 18:33:38,247 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:38,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7058 transitions. [2020-01-16 18:33:38,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:38,250 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:38,250 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:38,250 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 18:33:38,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:38,250 INFO L82 PathProgramCache]: Analyzing trace with hash 736982320, now seen corresponding path program 166 times [2020-01-16 18:33:38,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:38,251 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23751937] [2020-01-16 18:33:38,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:38,839 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:33:38,847 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 18:33:38,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23751937] [2020-01-16 18:33:38,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:38,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:38,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212426936] [2020-01-16 18:33:38,848 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:38,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:38,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:38,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:38,848 INFO L87 Difference]: Start difference. First operand 1575 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:33:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:39,081 INFO L93 Difference]: Finished difference Result 2939 states and 11697 transitions. [2020-01-16 18:33:39,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:39,082 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:39,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:39,089 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 18:33:39,089 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:33:39,089 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 18:33:39,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:33:39,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1571. [2020-01-16 18:33:39,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:33:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7047 transitions. [2020-01-16 18:33:39,156 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7047 transitions. Word has length 28 [2020-01-16 18:33:39,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:39,156 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7047 transitions. [2020-01-16 18:33:39,157 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7047 transitions. [2020-01-16 18:33:39,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:39,159 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:39,159 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 18:33:39,159 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 18:33:39,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:39,159 INFO L82 PathProgramCache]: Analyzing trace with hash -630886714, now seen corresponding path program 167 times [2020-01-16 18:33:39,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:39,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101832852] [2020-01-16 18:33:39,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:39,639 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:33:39,764 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:33:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:39,771 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101832852] [2020-01-16 18:33:39,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:39,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:39,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912584731] [2020-01-16 18:33:39,772 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:39,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:39,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:39,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:39,772 INFO L87 Difference]: Start difference. First operand 1571 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:33:40,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:40,026 INFO L93 Difference]: Finished difference Result 2950 states and 11717 transitions. [2020-01-16 18:33:40,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:40,027 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:40,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:40,035 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:33:40,035 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:33:40,035 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 18:33:40,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:33:40,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 18:33:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:33:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7055 transitions. [2020-01-16 18:33:40,103 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7055 transitions. Word has length 28 [2020-01-16 18:33:40,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:40,104 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7055 transitions. [2020-01-16 18:33:40,104 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7055 transitions. [2020-01-16 18:33:40,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:40,106 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:40,106 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:40,106 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 18:33:40,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:40,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1947044018, now seen corresponding path program 168 times [2020-01-16 18:33:40,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:40,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37737716] [2020-01-16 18:33:40,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:40,577 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:33:40,708 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:33:40,715 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 18:33:40,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37737716] [2020-01-16 18:33:40,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:40,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:40,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022882409] [2020-01-16 18:33:40,716 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:40,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:40,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:40,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:40,716 INFO L87 Difference]: Start difference. First operand 1576 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:33:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:40,946 INFO L93 Difference]: Finished difference Result 2944 states and 11701 transitions. [2020-01-16 18:33:40,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:40,947 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:40,954 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 18:33:40,954 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 18:33:40,954 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 18:33:40,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 18:33:41,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1561. [2020-01-16 18:33:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 18:33:41,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7024 transitions. [2020-01-16 18:33:41,021 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7024 transitions. Word has length 28 [2020-01-16 18:33:41,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:41,021 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7024 transitions. [2020-01-16 18:33:41,021 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:41,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7024 transitions. [2020-01-16 18:33:41,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:41,023 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:41,024 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 18:33:41,024 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 18:33:41,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:41,024 INFO L82 PathProgramCache]: Analyzing trace with hash -254171636, now seen corresponding path program 169 times [2020-01-16 18:33:41,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:41,024 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115319541] [2020-01-16 18:33:41,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:41,493 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:33:41,620 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:41,627 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 18:33:41,627 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115319541] [2020-01-16 18:33:41,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:41,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:41,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709532301] [2020-01-16 18:33:41,628 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:41,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:41,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:41,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:41,628 INFO L87 Difference]: Start difference. First operand 1561 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:33:41,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:41,863 INFO L93 Difference]: Finished difference Result 2932 states and 11702 transitions. [2020-01-16 18:33:41,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:41,864 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:41,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:41,871 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 18:33:41,872 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 18:33:41,872 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 18:33:41,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 18:33:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1575. [2020-01-16 18:33:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:33:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 18:33:41,941 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 18:33:41,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:41,941 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 18:33:41,941 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:41,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 18:33:41,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:41,944 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:41,944 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:41,944 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 18:33:41,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:41,944 INFO L82 PathProgramCache]: Analyzing trace with hash 490530862, now seen corresponding path program 170 times [2020-01-16 18:33:41,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:41,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491155741] [2020-01-16 18:33:41,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:42,533 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:42,540 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491155741] [2020-01-16 18:33:42,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:42,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:42,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661332808] [2020-01-16 18:33:42,540 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:42,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:42,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:42,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:42,541 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:33:42,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:42,803 INFO L93 Difference]: Finished difference Result 2933 states and 11699 transitions. [2020-01-16 18:33:42,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:42,803 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:42,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:42,811 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:33:42,811 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 18:33:42,811 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 18:33:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 18:33:42,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1570. [2020-01-16 18:33:42,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:33:42,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7057 transitions. [2020-01-16 18:33:42,878 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7057 transitions. Word has length 28 [2020-01-16 18:33:42,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:42,878 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7057 transitions. [2020-01-16 18:33:42,878 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:42,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7057 transitions. [2020-01-16 18:33:42,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:42,880 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:42,880 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:42,880 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 18:33:42,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:42,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1327257016, now seen corresponding path program 171 times [2020-01-16 18:33:42,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:42,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726679812] [2020-01-16 18:33:42,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:43,472 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:43,479 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 18:33:43,479 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726679812] [2020-01-16 18:33:43,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:43,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:43,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111984426] [2020-01-16 18:33:43,480 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:43,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:43,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:43,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:43,480 INFO L87 Difference]: Start difference. First operand 1570 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:33:43,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:43,709 INFO L93 Difference]: Finished difference Result 2934 states and 11701 transitions. [2020-01-16 18:33:43,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:43,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:43,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:43,718 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 18:33:43,718 INFO L226 Difference]: Without dead ends: 2919 [2020-01-16 18:33:43,718 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 18:33:43,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-01-16 18:33:43,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1575. [2020-01-16 18:33:43,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:33:43,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7066 transitions. [2020-01-16 18:33:43,785 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7066 transitions. Word has length 28 [2020-01-16 18:33:43,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:43,785 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7066 transitions. [2020-01-16 18:33:43,785 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:43,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7066 transitions. [2020-01-16 18:33:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:43,787 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:43,788 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:43,788 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 18:33:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:43,788 INFO L82 PathProgramCache]: Analyzing trace with hash 906850478, now seen corresponding path program 172 times [2020-01-16 18:33:43,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:43,788 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97608391] [2020-01-16 18:33:43,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:44,367 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:44,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97608391] [2020-01-16 18:33:44,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:44,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:44,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216758399] [2020-01-16 18:33:44,374 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:44,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:44,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:44,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:44,375 INFO L87 Difference]: Start difference. First operand 1575 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:33:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:44,615 INFO L93 Difference]: Finished difference Result 2937 states and 11702 transitions. [2020-01-16 18:33:44,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:44,616 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:44,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:44,623 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:33:44,624 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 18:33:44,624 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 18:33:44,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 18:33:44,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1570. [2020-01-16 18:33:44,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:33:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 18:33:44,689 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 18:33:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:44,689 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 18:33:44,689 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:44,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 18:33:44,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:44,692 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:44,692 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:44,692 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 18:33:44,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:44,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1028386440, now seen corresponding path program 173 times [2020-01-16 18:33:44,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:44,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544004386] [2020-01-16 18:33:44,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:45,276 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:45,283 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 18:33:45,283 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544004386] [2020-01-16 18:33:45,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:45,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:45,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366800027] [2020-01-16 18:33:45,284 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:45,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:45,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:45,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:45,284 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:33:45,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:45,515 INFO L93 Difference]: Finished difference Result 2937 states and 11703 transitions. [2020-01-16 18:33:45,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:45,515 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:45,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:45,523 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:33:45,523 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:33:45,523 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:33:45,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:33:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1576. [2020-01-16 18:33:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:33:45,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7063 transitions. [2020-01-16 18:33:45,590 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7063 transitions. Word has length 28 [2020-01-16 18:33:45,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:45,591 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7063 transitions. [2020-01-16 18:33:45,591 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:45,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7063 transitions. [2020-01-16 18:33:45,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:45,593 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:45,593 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 18:33:45,593 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 18:33:45,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:45,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1777175860, now seen corresponding path program 174 times [2020-01-16 18:33:45,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:45,594 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695457781] [2020-01-16 18:33:45,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:46,054 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:33:46,182 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:46,189 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 18:33:46,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695457781] [2020-01-16 18:33:46,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:46,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:46,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142116966] [2020-01-16 18:33:46,190 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:46,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:46,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:46,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:46,190 INFO L87 Difference]: Start difference. First operand 1576 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:33:46,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:46,389 INFO L93 Difference]: Finished difference Result 2939 states and 11701 transitions. [2020-01-16 18:33:46,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:46,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:46,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:46,397 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 18:33:46,397 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 18:33:46,398 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 18:33:46,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 18:33:46,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1565. [2020-01-16 18:33:46,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:33:46,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7039 transitions. [2020-01-16 18:33:46,463 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7039 transitions. Word has length 28 [2020-01-16 18:33:46,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:46,463 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7039 transitions. [2020-01-16 18:33:46,463 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:46,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7039 transitions. [2020-01-16 18:33:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:46,466 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:46,466 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 18:33:46,466 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 18:33:46,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:46,466 INFO L82 PathProgramCache]: Analyzing trace with hash -760517902, now seen corresponding path program 175 times [2020-01-16 18:33:46,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:46,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789452934] [2020-01-16 18:33:46,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:47,060 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:47,067 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789452934] [2020-01-16 18:33:47,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:47,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:47,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154780780] [2020-01-16 18:33:47,068 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:47,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:47,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:47,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:47,068 INFO L87 Difference]: Start difference. First operand 1565 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:33:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:47,275 INFO L93 Difference]: Finished difference Result 2924 states and 11677 transitions. [2020-01-16 18:33:47,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:47,276 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:47,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:47,283 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:33:47,283 INFO L226 Difference]: Without dead ends: 2909 [2020-01-16 18:33:47,283 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 18:33:47,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2020-01-16 18:33:47,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 1574. [2020-01-16 18:33:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:33:47,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7063 transitions. [2020-01-16 18:33:47,351 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7063 transitions. Word has length 28 [2020-01-16 18:33:47,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:47,351 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7063 transitions. [2020-01-16 18:33:47,351 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:47,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7063 transitions. [2020-01-16 18:33:47,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:47,353 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:47,353 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 18:33:47,353 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 18:33:47,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:47,354 INFO L82 PathProgramCache]: Analyzing trace with hash -15815404, now seen corresponding path program 176 times [2020-01-16 18:33:47,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:47,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891559654] [2020-01-16 18:33:47,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:47,845 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:33:47,973 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:47,980 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 18:33:47,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891559654] [2020-01-16 18:33:47,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:47,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:47,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016208251] [2020-01-16 18:33:47,981 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:47,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:47,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:47,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:47,981 INFO L87 Difference]: Start difference. First operand 1574 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:33:48,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:48,195 INFO L93 Difference]: Finished difference Result 2925 states and 11674 transitions. [2020-01-16 18:33:48,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:48,195 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:48,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:48,202 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 18:33:48,202 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 18:33:48,202 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 18:33:48,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 18:33:48,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1569. [2020-01-16 18:33:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:33:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7050 transitions. [2020-01-16 18:33:48,268 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7050 transitions. Word has length 28 [2020-01-16 18:33:48,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:48,268 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7050 transitions. [2020-01-16 18:33:48,268 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:48,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7050 transitions. [2020-01-16 18:33:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:48,270 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:48,270 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 18:33:48,270 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 18:33:48,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:48,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1295747704, now seen corresponding path program 177 times [2020-01-16 18:33:48,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:48,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537348597] [2020-01-16 18:33:48,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:48,751 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:33:48,900 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:48,907 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 18:33:48,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537348597] [2020-01-16 18:33:48,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:48,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:48,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071550147] [2020-01-16 18:33:48,907 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:48,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:48,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:48,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:48,908 INFO L87 Difference]: Start difference. First operand 1569 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:33:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:49,115 INFO L93 Difference]: Finished difference Result 2921 states and 11666 transitions. [2020-01-16 18:33:49,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:49,115 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:49,123 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:33:49,123 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:33:49,124 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 18:33:49,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:33:49,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1573. [2020-01-16 18:33:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:33:49,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7057 transitions. [2020-01-16 18:33:49,190 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7057 transitions. Word has length 28 [2020-01-16 18:33:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:49,190 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7057 transitions. [2020-01-16 18:33:49,190 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:49,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7057 transitions. [2020-01-16 18:33:49,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:49,192 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:49,192 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 18:33:49,192 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 18:33:49,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:49,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1122500012, now seen corresponding path program 178 times [2020-01-16 18:33:49,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:49,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673825297] [2020-01-16 18:33:49,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:49,777 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:49,784 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 18:33:49,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673825297] [2020-01-16 18:33:49,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:49,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:49,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950796066] [2020-01-16 18:33:49,785 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:49,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:49,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:49,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:49,785 INFO L87 Difference]: Start difference. First operand 1573 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:33:49,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:49,994 INFO L93 Difference]: Finished difference Result 2920 states and 11660 transitions. [2020-01-16 18:33:49,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:49,995 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:49,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:50,003 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 18:33:50,003 INFO L226 Difference]: Without dead ends: 2902 [2020-01-16 18:33:50,003 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 18:33:50,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2020-01-16 18:33:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1569. [2020-01-16 18:33:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:33:50,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7046 transitions. [2020-01-16 18:33:50,071 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7046 transitions. Word has length 28 [2020-01-16 18:33:50,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:50,071 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7046 transitions. [2020-01-16 18:33:50,071 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:50,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7046 transitions. [2020-01-16 18:33:50,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:50,073 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:50,073 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:50,074 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 18:33:50,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:50,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1059895752, now seen corresponding path program 179 times [2020-01-16 18:33:50,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:50,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566009679] [2020-01-16 18:33:50,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:50,560 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:33:50,689 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:33:50,695 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 18:33:50,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566009679] [2020-01-16 18:33:50,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:50,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:50,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209462019] [2020-01-16 18:33:50,696 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:50,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:50,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:50,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:50,697 INFO L87 Difference]: Start difference. First operand 1569 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:33:50,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:50,920 INFO L93 Difference]: Finished difference Result 2923 states and 11666 transitions. [2020-01-16 18:33:50,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:50,921 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:50,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:50,928 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:33:50,928 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 18:33:50,929 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 18:33:50,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 18:33:50,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1573. [2020-01-16 18:33:50,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:33:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7053 transitions. [2020-01-16 18:33:50,994 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7053 transitions. Word has length 28 [2020-01-16 18:33:50,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:50,994 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7053 transitions. [2020-01-16 18:33:50,994 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:50,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7053 transitions. [2020-01-16 18:33:50,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:50,996 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:50,996 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:50,996 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 18:33:50,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:50,997 INFO L82 PathProgramCache]: Analyzing trace with hash 488440946, now seen corresponding path program 180 times [2020-01-16 18:33:50,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:50,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332284123] [2020-01-16 18:33:50,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:51,592 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:33:51,599 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 18:33:51,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332284123] [2020-01-16 18:33:51,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:51,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:51,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539213420] [2020-01-16 18:33:51,600 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:51,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:51,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:51,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:51,601 INFO L87 Difference]: Start difference. First operand 1573 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:33:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:51,805 INFO L93 Difference]: Finished difference Result 2921 states and 11658 transitions. [2020-01-16 18:33:51,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:51,806 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:51,813 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:33:51,813 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 18:33:51,813 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 18:33:51,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 18:33:51,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1565. [2020-01-16 18:33:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:33:51,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7035 transitions. [2020-01-16 18:33:51,879 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7035 transitions. Word has length 28 [2020-01-16 18:33:51,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:51,879 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7035 transitions. [2020-01-16 18:33:51,879 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:51,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7035 transitions. [2020-01-16 18:33:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:51,881 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:51,881 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 18:33:51,882 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 18:33:51,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:51,882 INFO L82 PathProgramCache]: Analyzing trace with hash -739511694, now seen corresponding path program 181 times [2020-01-16 18:33:51,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:51,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258908800] [2020-01-16 18:33:51,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:52,474 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:52,481 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 18:33:52,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258908800] [2020-01-16 18:33:52,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:52,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:52,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114023] [2020-01-16 18:33:52,482 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:52,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:52,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:52,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:52,482 INFO L87 Difference]: Start difference. First operand 1565 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:33:52,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:52,683 INFO L93 Difference]: Finished difference Result 2928 states and 11681 transitions. [2020-01-16 18:33:52,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:52,684 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:52,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:52,693 INFO L225 Difference]: With dead ends: 2928 [2020-01-16 18:33:52,693 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 18:33:52,693 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 18:33:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 18:33:52,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1574. [2020-01-16 18:33:52,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:33:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7059 transitions. [2020-01-16 18:33:52,764 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7059 transitions. Word has length 28 [2020-01-16 18:33:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:52,764 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7059 transitions. [2020-01-16 18:33:52,765 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:52,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7059 transitions. [2020-01-16 18:33:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:52,767 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:52,767 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 18:33:52,767 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 18:33:52,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:52,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1494595800, now seen corresponding path program 182 times [2020-01-16 18:33:52,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:52,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408019394] [2020-01-16 18:33:52,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:53,353 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:53,360 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408019394] [2020-01-16 18:33:53,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:53,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:53,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133907288] [2020-01-16 18:33:53,361 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:53,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:53,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:53,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:53,361 INFO L87 Difference]: Start difference. First operand 1574 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:33:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:53,595 INFO L93 Difference]: Finished difference Result 2931 states and 11682 transitions. [2020-01-16 18:33:53,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:53,595 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:53,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:53,602 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 18:33:53,602 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:33:53,602 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 18:33:53,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:33:53,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1569. [2020-01-16 18:33:53,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:33:53,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7046 transitions. [2020-01-16 18:33:53,668 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7046 transitions. Word has length 28 [2020-01-16 18:33:53,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:53,668 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7046 transitions. [2020-01-16 18:33:53,668 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:53,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7046 transitions. [2020-01-16 18:33:53,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:53,671 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:53,671 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:53,671 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 18:33:53,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:53,671 INFO L82 PathProgramCache]: Analyzing trace with hash -201656116, now seen corresponding path program 183 times [2020-01-16 18:33:53,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:53,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701304063] [2020-01-16 18:33:53,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:54,041 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2020-01-16 18:33:54,290 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:33:54,297 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 18:33:54,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701304063] [2020-01-16 18:33:54,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:54,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:54,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109973780] [2020-01-16 18:33:54,298 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:54,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:54,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:54,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:54,299 INFO L87 Difference]: Start difference. First operand 1569 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:33:54,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:54,505 INFO L93 Difference]: Finished difference Result 2923 states and 11666 transitions. [2020-01-16 18:33:54,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:54,505 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:54,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:54,513 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:33:54,513 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:33:54,513 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 18:33:54,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:33:54,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1573. [2020-01-16 18:33:54,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:33:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7053 transitions. [2020-01-16 18:33:54,579 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7053 transitions. Word has length 28 [2020-01-16 18:33:54,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:54,579 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7053 transitions. [2020-01-16 18:33:54,579 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:54,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7053 transitions. [2020-01-16 18:33:54,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:54,581 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:54,581 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 18:33:54,581 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 18:33:54,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:54,582 INFO L82 PathProgramCache]: Analyzing trace with hash -28408424, now seen corresponding path program 184 times [2020-01-16 18:33:54,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:54,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957659921] [2020-01-16 18:33:54,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:55,164 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:55,170 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 18:33:55,171 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957659921] [2020-01-16 18:33:55,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:55,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:55,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661982321] [2020-01-16 18:33:55,171 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:55,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:55,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:55,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:55,172 INFO L87 Difference]: Start difference. First operand 1573 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:33:55,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:55,406 INFO L93 Difference]: Finished difference Result 2922 states and 11660 transitions. [2020-01-16 18:33:55,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:55,407 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:55,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:55,414 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:33:55,414 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 18:33:55,414 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 18:33:55,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 18:33:55,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1569. [2020-01-16 18:33:55,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:33:55,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7042 transitions. [2020-01-16 18:33:55,480 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7042 transitions. Word has length 28 [2020-01-16 18:33:55,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:55,481 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7042 transitions. [2020-01-16 18:33:55,481 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:55,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7042 transitions. [2020-01-16 18:33:55,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:55,484 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:55,484 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 18:33:55,484 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 18:33:55,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:55,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1724660340, now seen corresponding path program 185 times [2020-01-16 18:33:55,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:55,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685313159] [2020-01-16 18:33:55,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:56,066 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:56,073 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 18:33:56,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685313159] [2020-01-16 18:33:56,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:56,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:56,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255177605] [2020-01-16 18:33:56,074 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:56,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:56,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:56,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:56,074 INFO L87 Difference]: Start difference. First operand 1569 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:33:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:56,314 INFO L93 Difference]: Finished difference Result 2929 states and 11674 transitions. [2020-01-16 18:33:56,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:56,315 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:56,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:56,322 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:33:56,323 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:33:56,323 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 18:33:56,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:33:56,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1573. [2020-01-16 18:33:56,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:33:56,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7049 transitions. [2020-01-16 18:33:56,388 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7049 transitions. Word has length 28 [2020-01-16 18:33:56,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:56,389 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7049 transitions. [2020-01-16 18:33:56,389 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:56,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7049 transitions. [2020-01-16 18:33:56,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:56,391 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:56,391 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:56,391 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 18:33:56,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:56,391 INFO L82 PathProgramCache]: Analyzing trace with hash 509447154, now seen corresponding path program 186 times [2020-01-16 18:33:56,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:56,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044240164] [2020-01-16 18:33:56,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:56,975 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:33:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:56,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044240164] [2020-01-16 18:33:56,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:56,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:56,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540684520] [2020-01-16 18:33:56,983 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:56,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:56,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:56,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:56,984 INFO L87 Difference]: Start difference. First operand 1573 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:33:57,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:57,253 INFO L93 Difference]: Finished difference Result 2925 states and 11662 transitions. [2020-01-16 18:33:57,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:57,253 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:57,261 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 18:33:57,261 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 18:33:57,261 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 18:33:57,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 18:33:57,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1565. [2020-01-16 18:33:57,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:33:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7031 transitions. [2020-01-16 18:33:57,327 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7031 transitions. Word has length 28 [2020-01-16 18:33:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:57,327 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7031 transitions. [2020-01-16 18:33:57,327 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7031 transitions. [2020-01-16 18:33:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:57,330 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:57,330 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:33:57,330 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 18:33:57,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:57,330 INFO L82 PathProgramCache]: Analyzing trace with hash 15693908, now seen corresponding path program 187 times [2020-01-16 18:33:57,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:57,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345704684] [2020-01-16 18:33:57,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:57,787 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:33:57,916 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:33:57,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:57,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345704684] [2020-01-16 18:33:57,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:57,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:57,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847394199] [2020-01-16 18:33:57,922 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:57,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:57,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:57,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:57,923 INFO L87 Difference]: Start difference. First operand 1565 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:33:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:58,130 INFO L93 Difference]: Finished difference Result 2933 states and 11689 transitions. [2020-01-16 18:33:58,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:58,131 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:58,138 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:33:58,138 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 18:33:58,139 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 18:33:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 18:33:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1575. [2020-01-16 18:33:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:33:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7057 transitions. [2020-01-16 18:33:58,204 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7057 transitions. Word has length 28 [2020-01-16 18:33:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:58,205 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7057 transitions. [2020-01-16 18:33:58,205 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7057 transitions. [2020-01-16 18:33:58,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:58,207 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:58,207 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 18:33:58,207 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 18:33:58,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:58,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1505098904, now seen corresponding path program 188 times [2020-01-16 18:33:58,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:58,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663255237] [2020-01-16 18:33:58,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:58,665 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:33:58,792 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:33:58,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:58,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663255237] [2020-01-16 18:33:58,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:58,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:58,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552195372] [2020-01-16 18:33:58,799 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:58,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:58,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:58,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:58,800 INFO L87 Difference]: Start difference. First operand 1575 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:33:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:59,000 INFO L93 Difference]: Finished difference Result 2935 states and 11687 transitions. [2020-01-16 18:33:59,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:59,001 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:59,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:59,008 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 18:33:59,008 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:33:59,008 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 18:33:59,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:33:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1569. [2020-01-16 18:33:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:33:59,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7042 transitions. [2020-01-16 18:33:59,075 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7042 transitions. Word has length 28 [2020-01-16 18:33:59,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:33:59,075 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7042 transitions. [2020-01-16 18:33:59,075 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:33:59,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7042 transitions. [2020-01-16 18:33:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:33:59,078 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:33:59,078 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 18:33:59,078 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 18:33:59,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:33:59,078 INFO L82 PathProgramCache]: Analyzing trace with hash 553549486, now seen corresponding path program 189 times [2020-01-16 18:33:59,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:33:59,078 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814253013] [2020-01-16 18:33:59,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:33:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:33:59,698 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:33:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:33:59,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814253013] [2020-01-16 18:33:59,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:33:59,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:33:59,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249881462] [2020-01-16 18:33:59,706 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:33:59,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:33:59,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:33:59,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:33:59,707 INFO L87 Difference]: Start difference. First operand 1569 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:33:59,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:33:59,932 INFO L93 Difference]: Finished difference Result 2927 states and 11671 transitions. [2020-01-16 18:33:59,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:33:59,932 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:33:59,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:33:59,941 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 18:33:59,941 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:33:59,941 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 18:33:59,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:34:00,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1573. [2020-01-16 18:34:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:34:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7049 transitions. [2020-01-16 18:34:00,010 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7049 transitions. Word has length 28 [2020-01-16 18:34:00,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:00,010 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7049 transitions. [2020-01-16 18:34:00,010 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:00,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7049 transitions. [2020-01-16 18:34:00,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:00,012 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:00,012 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 18:34:00,012 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 18:34:00,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:00,013 INFO L82 PathProgramCache]: Analyzing trace with hash -17905320, now seen corresponding path program 190 times [2020-01-16 18:34:00,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:00,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623839593] [2020-01-16 18:34:00,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:00,593 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:00,600 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 18:34:00,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623839593] [2020-01-16 18:34:00,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:00,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:00,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030222164] [2020-01-16 18:34:00,600 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:00,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:00,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:00,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:00,601 INFO L87 Difference]: Start difference. First operand 1573 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:34:00,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:00,863 INFO L93 Difference]: Finished difference Result 2925 states and 11663 transitions. [2020-01-16 18:34:00,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:00,864 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:00,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:00,870 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 18:34:00,871 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 18:34:00,871 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 18:34:00,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 18:34:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1569. [2020-01-16 18:34:00,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:34:00,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7038 transitions. [2020-01-16 18:34:00,938 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7038 transitions. Word has length 28 [2020-01-16 18:34:00,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:00,938 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7038 transitions. [2020-01-16 18:34:00,938 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:00,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7038 transitions. [2020-01-16 18:34:00,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:00,941 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:00,941 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:00,941 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 18:34:00,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:00,941 INFO L82 PathProgramCache]: Analyzing trace with hash 969869102, now seen corresponding path program 191 times [2020-01-16 18:34:00,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:00,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986138336] [2020-01-16 18:34:00,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:01,400 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:34:01,529 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:01,538 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 18:34:01,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986138336] [2020-01-16 18:34:01,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:01,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:01,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035694307] [2020-01-16 18:34:01,539 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:01,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:01,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:01,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:01,540 INFO L87 Difference]: Start difference. First operand 1569 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:34:01,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:01,804 INFO L93 Difference]: Finished difference Result 2931 states and 11675 transitions. [2020-01-16 18:34:01,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:01,805 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:01,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:01,812 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 18:34:01,813 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 18:34:01,813 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 18:34:01,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 18:34:01,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1573. [2020-01-16 18:34:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:34:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7045 transitions. [2020-01-16 18:34:01,878 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7045 transitions. Word has length 28 [2020-01-16 18:34:01,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:01,879 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7045 transitions. [2020-01-16 18:34:01,879 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:01,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7045 transitions. [2020-01-16 18:34:01,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:01,881 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:01,881 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 18:34:01,881 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 18:34:01,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:01,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1090990700, now seen corresponding path program 192 times [2020-01-16 18:34:01,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:01,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859427742] [2020-01-16 18:34:01,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:02,475 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:02,481 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 18:34:02,482 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859427742] [2020-01-16 18:34:02,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:02,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:02,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122765474] [2020-01-16 18:34:02,482 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:02,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:02,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:02,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:02,483 INFO L87 Difference]: Start difference. First operand 1573 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:34:02,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:02,684 INFO L93 Difference]: Finished difference Result 2927 states and 11663 transitions. [2020-01-16 18:34:02,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:02,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:02,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:02,692 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 18:34:02,692 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 18:34:02,692 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 18:34:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 18:34:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1561. [2020-01-16 18:34:02,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 18:34:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7020 transitions. [2020-01-16 18:34:02,758 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7020 transitions. Word has length 28 [2020-01-16 18:34:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:02,758 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7020 transitions. [2020-01-16 18:34:02,758 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:02,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7020 transitions. [2020-01-16 18:34:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:02,760 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:02,760 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:02,761 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 18:34:02,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:02,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1682365546, now seen corresponding path program 193 times [2020-01-16 18:34:02,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:02,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162256240] [2020-01-16 18:34:02,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:03,348 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:03,355 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 18:34:03,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162256240] [2020-01-16 18:34:03,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:03,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:03,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140566659] [2020-01-16 18:34:03,356 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:03,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:03,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:03,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:03,356 INFO L87 Difference]: Start difference. First operand 1561 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:34:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:03,561 INFO L93 Difference]: Finished difference Result 2965 states and 11770 transitions. [2020-01-16 18:34:03,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:03,562 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:03,569 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:34:03,569 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:34:03,570 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 18:34:03,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:34:03,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1580. [2020-01-16 18:34:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:34:03,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7081 transitions. [2020-01-16 18:34:03,635 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7081 transitions. Word has length 28 [2020-01-16 18:34:03,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:03,636 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7081 transitions. [2020-01-16 18:34:03,636 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:03,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7081 transitions. [2020-01-16 18:34:03,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:03,638 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:03,638 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:03,638 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 18:34:03,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:03,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1123196754, now seen corresponding path program 194 times [2020-01-16 18:34:03,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:03,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521830318] [2020-01-16 18:34:03,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:04,108 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:34:04,231 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:04,238 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 18:34:04,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521830318] [2020-01-16 18:34:04,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:04,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:04,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104016772] [2020-01-16 18:34:04,239 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:04,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:04,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:04,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:04,239 INFO L87 Difference]: Start difference. First operand 1580 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:34:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:04,416 INFO L93 Difference]: Finished difference Result 2970 states and 11774 transitions. [2020-01-16 18:34:04,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:04,416 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:04,423 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:34:04,423 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:34:04,424 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 18:34:04,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:34:04,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1574. [2020-01-16 18:34:04,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:34:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7064 transitions. [2020-01-16 18:34:04,520 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7064 transitions. Word has length 28 [2020-01-16 18:34:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:04,520 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7064 transitions. [2020-01-16 18:34:04,520 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7064 transitions. [2020-01-16 18:34:04,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:04,522 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:04,522 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:04,522 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 18:34:04,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:04,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1001660792, now seen corresponding path program 195 times [2020-01-16 18:34:04,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:04,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515815026] [2020-01-16 18:34:04,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:05,105 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:05,112 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 18:34:05,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515815026] [2020-01-16 18:34:05,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:05,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:05,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600201860] [2020-01-16 18:34:05,113 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:05,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:05,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:05,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:05,113 INFO L87 Difference]: Start difference. First operand 1574 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:34:05,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:05,363 INFO L93 Difference]: Finished difference Result 2962 states and 11759 transitions. [2020-01-16 18:34:05,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:05,364 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:05,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:05,372 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:34:05,372 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:34:05,372 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 18:34:05,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:34:05,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1579. [2020-01-16 18:34:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:34:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7073 transitions. [2020-01-16 18:34:05,440 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7073 transitions. Word has length 28 [2020-01-16 18:34:05,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:05,440 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7073 transitions. [2020-01-16 18:34:05,440 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:05,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7073 transitions. [2020-01-16 18:34:05,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:05,443 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:05,443 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:05,443 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 18:34:05,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:05,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1232446702, now seen corresponding path program 196 times [2020-01-16 18:34:05,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:05,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943373080] [2020-01-16 18:34:05,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:06,027 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:06,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943373080] [2020-01-16 18:34:06,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:06,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:06,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804444578] [2020-01-16 18:34:06,035 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:06,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:06,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:06,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:06,036 INFO L87 Difference]: Start difference. First operand 1579 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:34:06,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:06,230 INFO L93 Difference]: Finished difference Result 2965 states and 11760 transitions. [2020-01-16 18:34:06,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:06,231 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:06,238 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:34:06,238 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:34:06,238 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 18:34:06,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:34:06,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1574. [2020-01-16 18:34:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:34:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7059 transitions. [2020-01-16 18:34:06,306 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7059 transitions. Word has length 28 [2020-01-16 18:34:06,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:06,306 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7059 transitions. [2020-01-16 18:34:06,306 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:06,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7059 transitions. [2020-01-16 18:34:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:06,308 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:06,309 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 18:34:06,309 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 18:34:06,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:06,309 INFO L82 PathProgramCache]: Analyzing trace with hash -585341176, now seen corresponding path program 197 times [2020-01-16 18:34:06,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:06,309 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994667341] [2020-01-16 18:34:06,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:06,784 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:34:06,908 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:06,914 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 18:34:06,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994667341] [2020-01-16 18:34:06,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:06,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:06,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65646386] [2020-01-16 18:34:06,915 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:06,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:06,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:06,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:06,916 INFO L87 Difference]: Start difference. First operand 1574 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:34:07,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:07,078 INFO L93 Difference]: Finished difference Result 2977 states and 11784 transitions. [2020-01-16 18:34:07,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:07,078 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:07,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:07,086 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:34:07,086 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:34:07,087 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 18:34:07,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:34:07,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1584. [2020-01-16 18:34:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:34:07,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7076 transitions. [2020-01-16 18:34:07,156 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7076 transitions. Word has length 28 [2020-01-16 18:34:07,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:07,156 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7076 transitions. [2020-01-16 18:34:07,157 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:07,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7076 transitions. [2020-01-16 18:34:07,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:07,159 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:07,159 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 18:34:07,159 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 18:34:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:07,159 INFO L82 PathProgramCache]: Analyzing trace with hash 159361322, now seen corresponding path program 198 times [2020-01-16 18:34:07,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:07,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564795792] [2020-01-16 18:34:07,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:07,761 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:07,768 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 18:34:07,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564795792] [2020-01-16 18:34:07,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:07,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:07,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616197404] [2020-01-16 18:34:07,768 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:07,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:07,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:07,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:07,769 INFO L87 Difference]: Start difference. First operand 1584 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:34:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:07,992 INFO L93 Difference]: Finished difference Result 2975 states and 11772 transitions. [2020-01-16 18:34:07,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:07,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:07,999 INFO L225 Difference]: With dead ends: 2975 [2020-01-16 18:34:07,999 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:34:07,999 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:34:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:34:08,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1567. [2020-01-16 18:34:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:34:08,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7040 transitions. [2020-01-16 18:34:08,068 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7040 transitions. Word has length 28 [2020-01-16 18:34:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:08,068 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7040 transitions. [2020-01-16 18:34:08,068 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7040 transitions. [2020-01-16 18:34:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:08,070 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:08,070 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 18:34:08,070 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 18:34:08,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:08,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1176019280, now seen corresponding path program 199 times [2020-01-16 18:34:08,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:08,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851271120] [2020-01-16 18:34:08,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:08,664 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:08,671 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 18:34:08,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851271120] [2020-01-16 18:34:08,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:08,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:08,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686736295] [2020-01-16 18:34:08,672 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:08,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:08,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:08,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:08,673 INFO L87 Difference]: Start difference. First operand 1567 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:34:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:08,902 INFO L93 Difference]: Finished difference Result 2953 states and 11734 transitions. [2020-01-16 18:34:08,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:08,902 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:08,910 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:34:08,910 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:34:08,911 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 18:34:08,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:34:08,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1578. [2020-01-16 18:34:08,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:34:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7069 transitions. [2020-01-16 18:34:08,979 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7069 transitions. Word has length 28 [2020-01-16 18:34:08,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:08,979 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7069 transitions. [2020-01-16 18:34:08,979 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:08,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7069 transitions. [2020-01-16 18:34:08,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:08,981 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:08,981 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 18:34:08,982 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 18:34:08,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:08,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1629543020, now seen corresponding path program 200 times [2020-01-16 18:34:08,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:08,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138387025] [2020-01-16 18:34:08,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:09,451 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:34:09,576 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:09,582 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 18:34:09,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138387025] [2020-01-16 18:34:09,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:09,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:09,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390373860] [2020-01-16 18:34:09,583 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:09,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:09,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:09,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:09,584 INFO L87 Difference]: Start difference. First operand 1578 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:34:09,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:09,741 INFO L93 Difference]: Finished difference Result 2958 states and 11738 transitions. [2020-01-16 18:34:09,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:09,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:09,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:09,749 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:34:09,749 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:34:09,749 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 18:34:09,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:34:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1572. [2020-01-16 18:34:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:34:09,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7053 transitions. [2020-01-16 18:34:09,838 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7053 transitions. Word has length 28 [2020-01-16 18:34:09,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:09,839 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7053 transitions. [2020-01-16 18:34:09,839 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:09,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7053 transitions. [2020-01-16 18:34:09,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:09,841 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:09,841 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 18:34:09,841 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 18:34:09,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:09,843 INFO L82 PathProgramCache]: Analyzing trace with hash -970151480, now seen corresponding path program 201 times [2020-01-16 18:34:09,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:09,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945064014] [2020-01-16 18:34:09,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:10,437 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:10,444 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 18:34:10,444 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945064014] [2020-01-16 18:34:10,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:10,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:10,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989866938] [2020-01-16 18:34:10,445 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:10,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:10,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:10,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:10,445 INFO L87 Difference]: Start difference. First operand 1572 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:34:10,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:10,680 INFO L93 Difference]: Finished difference Result 2945 states and 11713 transitions. [2020-01-16 18:34:10,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:10,681 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:10,688 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:34:10,688 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:34:10,688 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 18:34:10,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:34:10,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 18:34:10,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:34:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7060 transitions. [2020-01-16 18:34:10,755 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7060 transitions. Word has length 28 [2020-01-16 18:34:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:10,755 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7060 transitions. [2020-01-16 18:34:10,755 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7060 transitions. [2020-01-16 18:34:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:10,758 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:10,758 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:10,758 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 18:34:10,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:10,758 INFO L82 PathProgramCache]: Analyzing trace with hash -796903788, now seen corresponding path program 202 times [2020-01-16 18:34:10,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:10,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375987977] [2020-01-16 18:34:10,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:11,343 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:11,349 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 18:34:11,350 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375987977] [2020-01-16 18:34:11,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:11,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:11,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337687946] [2020-01-16 18:34:11,350 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:11,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:11,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:11,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:11,351 INFO L87 Difference]: Start difference. First operand 1576 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:34:11,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:11,560 INFO L93 Difference]: Finished difference Result 2944 states and 11707 transitions. [2020-01-16 18:34:11,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:11,560 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:11,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:11,568 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 18:34:11,568 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:34:11,568 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 18:34:11,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:34:11,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1572. [2020-01-16 18:34:11,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:34:11,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7049 transitions. [2020-01-16 18:34:11,635 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7049 transitions. Word has length 28 [2020-01-16 18:34:11,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:11,635 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7049 transitions. [2020-01-16 18:34:11,635 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:11,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7049 transitions. [2020-01-16 18:34:11,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:11,637 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:11,637 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:11,637 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 18:34:11,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:11,638 INFO L82 PathProgramCache]: Analyzing trace with hash -553831864, now seen corresponding path program 203 times [2020-01-16 18:34:11,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:11,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290875475] [2020-01-16 18:34:11,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:12,098 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:34:12,223 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:12,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290875475] [2020-01-16 18:34:12,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:12,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:12,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307728725] [2020-01-16 18:34:12,230 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:12,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:12,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:12,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:12,231 INFO L87 Difference]: Start difference. First operand 1572 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:34:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:12,412 INFO L93 Difference]: Finished difference Result 2956 states and 11729 transitions. [2020-01-16 18:34:12,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:12,413 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:12,419 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:34:12,420 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:34:12,420 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 18:34:12,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:34:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1577. [2020-01-16 18:34:12,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:34:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7057 transitions. [2020-01-16 18:34:12,488 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7057 transitions. Word has length 28 [2020-01-16 18:34:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:12,488 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7057 transitions. [2020-01-16 18:34:12,488 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7057 transitions. [2020-01-16 18:34:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:12,490 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:12,491 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 18:34:12,491 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 18:34:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:12,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1869989168, now seen corresponding path program 204 times [2020-01-16 18:34:12,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:12,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317906999] [2020-01-16 18:34:12,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:13,065 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:13,071 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 18:34:13,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317906999] [2020-01-16 18:34:13,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:13,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:13,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408996608] [2020-01-16 18:34:13,072 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:13,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:13,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:13,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:13,073 INFO L87 Difference]: Start difference. First operand 1577 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:34:13,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:13,275 INFO L93 Difference]: Finished difference Result 2950 states and 11713 transitions. [2020-01-16 18:34:13,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:13,276 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:13,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:13,283 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:34:13,284 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:34:13,284 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 18:34:13,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:34:13,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1567. [2020-01-16 18:34:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:34:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7035 transitions. [2020-01-16 18:34:13,351 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7035 transitions. Word has length 28 [2020-01-16 18:34:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:13,352 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7035 transitions. [2020-01-16 18:34:13,352 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7035 transitions. [2020-01-16 18:34:13,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:13,354 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:13,354 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:13,354 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 18:34:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:13,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1186522384, now seen corresponding path program 205 times [2020-01-16 18:34:13,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:13,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580836429] [2020-01-16 18:34:13,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:13,812 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:34:13,940 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:13,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580836429] [2020-01-16 18:34:13,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:13,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:13,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246495453] [2020-01-16 18:34:13,947 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:13,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:13,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:13,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:13,948 INFO L87 Difference]: Start difference. First operand 1567 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:34:14,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:14,153 INFO L93 Difference]: Finished difference Result 2945 states and 11714 transitions. [2020-01-16 18:34:14,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:14,154 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:14,161 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:34:14,162 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:34:14,162 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 18:34:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:34:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 18:34:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:34:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7059 transitions. [2020-01-16 18:34:14,238 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7059 transitions. Word has length 28 [2020-01-16 18:34:14,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:14,238 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7059 transitions. [2020-01-16 18:34:14,238 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:14,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7059 transitions. [2020-01-16 18:34:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:14,240 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:14,240 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:14,240 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 18:34:14,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:14,240 INFO L82 PathProgramCache]: Analyzing trace with hash -874337418, now seen corresponding path program 206 times [2020-01-16 18:34:14,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:14,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652968486] [2020-01-16 18:34:14,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:14,830 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:14,837 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 18:34:14,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652968486] [2020-01-16 18:34:14,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:14,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:14,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417554859] [2020-01-16 18:34:14,838 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:14,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:14,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:14,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:14,838 INFO L87 Difference]: Start difference. First operand 1576 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:34:15,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:15,073 INFO L93 Difference]: Finished difference Result 2948 states and 11715 transitions. [2020-01-16 18:34:15,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:15,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:15,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:15,081 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:34:15,081 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:34:15,081 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 18:34:15,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:34:15,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1571. [2020-01-16 18:34:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:34:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7046 transitions. [2020-01-16 18:34:15,148 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7046 transitions. Word has length 28 [2020-01-16 18:34:15,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:15,148 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7046 transitions. [2020-01-16 18:34:15,148 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7046 transitions. [2020-01-16 18:34:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:15,151 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:15,151 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:15,151 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 18:34:15,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:15,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1724377962, now seen corresponding path program 207 times [2020-01-16 18:34:15,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:15,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909939469] [2020-01-16 18:34:15,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:15,743 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:15,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909939469] [2020-01-16 18:34:15,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:15,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:15,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65383173] [2020-01-16 18:34:15,751 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:15,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:15,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:15,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:15,751 INFO L87 Difference]: Start difference. First operand 1571 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:34:16,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:16,041 INFO L93 Difference]: Finished difference Result 2940 states and 11699 transitions. [2020-01-16 18:34:16,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:16,042 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:16,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:16,049 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:34:16,049 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:34:16,049 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 18:34:16,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:34:16,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1575. [2020-01-16 18:34:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:34:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7053 transitions. [2020-01-16 18:34:16,117 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7053 transitions. Word has length 28 [2020-01-16 18:34:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:16,117 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7053 transitions. [2020-01-16 18:34:16,117 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7053 transitions. [2020-01-16 18:34:16,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:16,119 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:16,119 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:16,120 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 18:34:16,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:16,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1897625654, now seen corresponding path program 208 times [2020-01-16 18:34:16,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:16,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073744379] [2020-01-16 18:34:16,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:16,589 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:34:16,718 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:34:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:16,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073744379] [2020-01-16 18:34:16,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:16,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:16,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308179460] [2020-01-16 18:34:16,726 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:16,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:16,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:16,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:16,726 INFO L87 Difference]: Start difference. First operand 1575 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:34:16,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:16,961 INFO L93 Difference]: Finished difference Result 2939 states and 11693 transitions. [2020-01-16 18:34:16,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:16,962 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:16,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:16,969 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 18:34:16,969 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:34:16,970 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 18:34:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:34:17,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1571. [2020-01-16 18:34:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:34:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7042 transitions. [2020-01-16 18:34:17,035 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7042 transitions. Word has length 28 [2020-01-16 18:34:17,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:17,036 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7042 transitions. [2020-01-16 18:34:17,036 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7042 transitions. [2020-01-16 18:34:17,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:17,038 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:17,038 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 18:34:17,038 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 18:34:17,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:17,038 INFO L82 PathProgramCache]: Analyzing trace with hash 201373738, now seen corresponding path program 209 times [2020-01-16 18:34:17,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:17,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949537725] [2020-01-16 18:34:17,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:17,619 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:34:17,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:17,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949537725] [2020-01-16 18:34:17,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:17,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:17,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556425833] [2020-01-16 18:34:17,627 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:17,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:17,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:17,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:17,627 INFO L87 Difference]: Start difference. First operand 1571 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:34:17,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:17,918 INFO L93 Difference]: Finished difference Result 2946 states and 11707 transitions. [2020-01-16 18:34:17,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:17,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:17,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:17,927 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:34:17,927 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:34:17,927 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 18:34:17,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:34:17,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1575. [2020-01-16 18:34:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:34:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7049 transitions. [2020-01-16 18:34:17,999 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7049 transitions. Word has length 28 [2020-01-16 18:34:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:17,999 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7049 transitions. [2020-01-16 18:34:17,999 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7049 transitions. [2020-01-16 18:34:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:18,002 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:18,002 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 18:34:18,002 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 18:34:18,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:18,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1859486064, now seen corresponding path program 210 times [2020-01-16 18:34:18,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:18,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704684694] [2020-01-16 18:34:18,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:18,586 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:34:18,593 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 18:34:18,593 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704684694] [2020-01-16 18:34:18,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:18,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:18,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360921184] [2020-01-16 18:34:18,593 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:18,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:18,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:18,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:18,594 INFO L87 Difference]: Start difference. First operand 1575 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:34:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:18,888 INFO L93 Difference]: Finished difference Result 2942 states and 11695 transitions. [2020-01-16 18:34:18,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:18,889 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:18,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:18,896 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 18:34:18,896 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:34:18,896 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 18:34:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:34:18,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1567. [2020-01-16 18:34:18,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:34:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7031 transitions. [2020-01-16 18:34:18,961 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7031 transitions. Word has length 28 [2020-01-16 18:34:18,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:18,961 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7031 transitions. [2020-01-16 18:34:18,961 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7031 transitions. [2020-01-16 18:34:18,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:18,964 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:18,964 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:18,964 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 18:34:18,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:18,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1598033708, now seen corresponding path program 211 times [2020-01-16 18:34:18,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:18,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805977894] [2020-01-16 18:34:18,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:19,442 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:34:19,572 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:19,580 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 18:34:19,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805977894] [2020-01-16 18:34:19,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:19,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:19,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170656976] [2020-01-16 18:34:19,581 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:19,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:19,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:19,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:19,581 INFO L87 Difference]: Start difference. First operand 1567 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:34:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:19,781 INFO L93 Difference]: Finished difference Result 2973 states and 11768 transitions. [2020-01-16 18:34:19,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:19,781 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:19,789 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:34:19,789 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:34:19,789 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 18:34:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:34:19,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1583. [2020-01-16 18:34:19,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:34:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7068 transitions. [2020-01-16 18:34:19,854 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7068 transitions. Word has length 28 [2020-01-16 18:34:19,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:19,855 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7068 transitions. [2020-01-16 18:34:19,855 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7068 transitions. [2020-01-16 18:34:19,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:19,857 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:19,857 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:19,857 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 18:34:19,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:19,857 INFO L82 PathProgramCache]: Analyzing trace with hash -853331210, now seen corresponding path program 212 times [2020-01-16 18:34:19,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:19,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029328216] [2020-01-16 18:34:19,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:20,333 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:34:20,464 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:34:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:20,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029328216] [2020-01-16 18:34:20,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:20,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:20,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400131543] [2020-01-16 18:34:20,495 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:20,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:20,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:20,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:20,495 INFO L87 Difference]: Start difference. First operand 1583 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:34:20,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:20,784 INFO L93 Difference]: Finished difference Result 2971 states and 11756 transitions. [2020-01-16 18:34:20,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:20,785 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:20,792 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 18:34:20,792 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 18:34:20,792 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 18:34:20,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 18:34:20,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1573. [2020-01-16 18:34:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:34:20,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7045 transitions. [2020-01-16 18:34:20,859 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7045 transitions. Word has length 28 [2020-01-16 18:34:20,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:20,859 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7045 transitions. [2020-01-16 18:34:20,859 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7045 transitions. [2020-01-16 18:34:20,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:20,861 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:20,861 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 18:34:20,862 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 18:34:20,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:20,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1060178130, now seen corresponding path program 213 times [2020-01-16 18:34:20,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:20,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430307677] [2020-01-16 18:34:20,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:21,337 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:34:21,462 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:21,467 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 18:34:21,468 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430307677] [2020-01-16 18:34:21,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:21,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:21,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186765537] [2020-01-16 18:34:21,468 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:21,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:21,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:21,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:21,468 INFO L87 Difference]: Start difference. First operand 1573 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:34:21,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:21,718 INFO L93 Difference]: Finished difference Result 2964 states and 11741 transitions. [2020-01-16 18:34:21,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:21,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:21,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:21,726 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:34:21,726 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:34:21,727 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 18:34:21,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:34:21,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1578. [2020-01-16 18:34:21,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:34:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7053 transitions. [2020-01-16 18:34:21,793 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7053 transitions. Word has length 28 [2020-01-16 18:34:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:21,793 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7053 transitions. [2020-01-16 18:34:21,793 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7053 transitions. [2020-01-16 18:34:21,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:21,795 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:21,795 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:21,796 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 18:34:21,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:21,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1918631862, now seen corresponding path program 214 times [2020-01-16 18:34:21,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:21,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893390893] [2020-01-16 18:34:21,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:22,385 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:22,392 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 18:34:22,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893390893] [2020-01-16 18:34:22,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:22,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:22,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89322749] [2020-01-16 18:34:22,393 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:22,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:22,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:22,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:22,394 INFO L87 Difference]: Start difference. First operand 1578 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:34:22,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:22,614 INFO L93 Difference]: Finished difference Result 2958 states and 11725 transitions. [2020-01-16 18:34:22,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:22,615 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:22,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:22,622 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:34:22,623 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:34:22,623 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 18:34:22,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:34:22,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1573. [2020-01-16 18:34:22,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:34:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7040 transitions. [2020-01-16 18:34:22,688 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7040 transitions. Word has length 28 [2020-01-16 18:34:22,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:22,688 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7040 transitions. [2020-01-16 18:34:22,688 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:22,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7040 transitions. [2020-01-16 18:34:22,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:22,690 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:22,690 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 18:34:22,690 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 18:34:22,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:22,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1295465326, now seen corresponding path program 215 times [2020-01-16 18:34:22,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:22,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788244446] [2020-01-16 18:34:22,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:23,281 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:34:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:23,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788244446] [2020-01-16 18:34:23,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:23,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:23,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889510986] [2020-01-16 18:34:23,289 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:23,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:23,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:23,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:23,289 INFO L87 Difference]: Start difference. First operand 1573 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:34:23,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:23,582 INFO L93 Difference]: Finished difference Result 2959 states and 11728 transitions. [2020-01-16 18:34:23,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:23,583 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:23,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:23,590 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:34:23,591 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:34:23,591 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 18:34:23,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:34:23,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1577. [2020-01-16 18:34:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:34:23,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7047 transitions. [2020-01-16 18:34:23,657 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7047 transitions. Word has length 28 [2020-01-16 18:34:23,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:23,657 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7047 transitions. [2020-01-16 18:34:23,657 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7047 transitions. [2020-01-16 18:34:23,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:23,659 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:23,660 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 18:34:23,660 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 18:34:23,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:23,660 INFO L82 PathProgramCache]: Analyzing trace with hash -765394476, now seen corresponding path program 216 times [2020-01-16 18:34:23,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:23,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184321759] [2020-01-16 18:34:23,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:24,129 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:34:24,258 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:34:24,264 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 18:34:24,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184321759] [2020-01-16 18:34:24,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:24,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:24,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120473501] [2020-01-16 18:34:24,265 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:24,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:24,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:24,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:24,266 INFO L87 Difference]: Start difference. First operand 1577 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:34:24,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:24,561 INFO L93 Difference]: Finished difference Result 2955 states and 11716 transitions. [2020-01-16 18:34:24,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:24,561 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:24,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:24,569 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:34:24,569 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:34:24,569 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 18:34:24,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:34:24,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1561. [2020-01-16 18:34:24,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 18:34:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7014 transitions. [2020-01-16 18:34:24,635 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7014 transitions. Word has length 28 [2020-01-16 18:34:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:24,635 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7014 transitions. [2020-01-16 18:34:24,635 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7014 transitions. [2020-01-16 18:34:24,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:24,637 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:24,637 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:24,638 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 18:34:24,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:24,638 INFO L82 PathProgramCache]: Analyzing trace with hash 68637930, now seen corresponding path program 217 times [2020-01-16 18:34:24,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:24,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408246138] [2020-01-16 18:34:24,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:25,240 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:25,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408246138] [2020-01-16 18:34:25,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:25,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:25,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941550686] [2020-01-16 18:34:25,247 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:25,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:25,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:25,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:25,248 INFO L87 Difference]: Start difference. First operand 1561 states and 7014 transitions. Second operand 11 states. [2020-01-16 18:34:25,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:25,464 INFO L93 Difference]: Finished difference Result 2976 states and 11795 transitions. [2020-01-16 18:34:25,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:25,464 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:25,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:25,472 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:34:25,472 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:34:25,472 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 18:34:25,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:34:25,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1582. [2020-01-16 18:34:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:34:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7081 transitions. [2020-01-16 18:34:25,538 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7081 transitions. Word has length 28 [2020-01-16 18:34:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:25,538 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7081 transitions. [2020-01-16 18:34:25,538 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7081 transitions. [2020-01-16 18:34:25,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:25,540 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:25,540 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:25,540 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 18:34:25,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:25,541 INFO L82 PathProgramCache]: Analyzing trace with hash 813340428, now seen corresponding path program 218 times [2020-01-16 18:34:25,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:25,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708347348] [2020-01-16 18:34:25,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:25,927 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2020-01-16 18:34:26,052 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:34:26,179 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:26,186 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 18:34:26,187 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708347348] [2020-01-16 18:34:26,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:26,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:26,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524098863] [2020-01-16 18:34:26,187 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:26,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:26,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:26,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:26,188 INFO L87 Difference]: Start difference. First operand 1582 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:34:26,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:26,338 INFO L93 Difference]: Finished difference Result 2980 states and 11796 transitions. [2020-01-16 18:34:26,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:26,339 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:26,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:26,346 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:34:26,347 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:34:26,347 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 18:34:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:34:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1575. [2020-01-16 18:34:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:34:26,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7061 transitions. [2020-01-16 18:34:26,413 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7061 transitions. Word has length 28 [2020-01-16 18:34:26,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:26,413 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7061 transitions. [2020-01-16 18:34:26,413 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7061 transitions. [2020-01-16 18:34:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:26,416 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:26,416 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:26,416 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 18:34:26,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:26,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1679578888, now seen corresponding path program 219 times [2020-01-16 18:34:26,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:26,416 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743498243] [2020-01-16 18:34:26,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:26,881 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:34:27,008 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:27,014 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 18:34:27,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743498243] [2020-01-16 18:34:27,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:27,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:27,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364291657] [2020-01-16 18:34:27,015 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:27,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:27,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:27,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:27,015 INFO L87 Difference]: Start difference. First operand 1575 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:34:27,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:27,204 INFO L93 Difference]: Finished difference Result 2973 states and 11783 transitions. [2020-01-16 18:34:27,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:27,205 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:27,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:27,212 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:34:27,213 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:34:27,213 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 18:34:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:34:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1581. [2020-01-16 18:34:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:34:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7072 transitions. [2020-01-16 18:34:27,283 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7072 transitions. Word has length 28 [2020-01-16 18:34:27,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:27,284 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7072 transitions. [2020-01-16 18:34:27,284 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7072 transitions. [2020-01-16 18:34:27,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:27,286 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:27,286 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 18:34:27,286 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 18:34:27,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:27,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1125983412, now seen corresponding path program 220 times [2020-01-16 18:34:27,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:27,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668121518] [2020-01-16 18:34:27,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:27,877 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:27,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668121518] [2020-01-16 18:34:27,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:27,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:27,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625353035] [2020-01-16 18:34:27,885 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:27,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:27,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:27,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:27,886 INFO L87 Difference]: Start difference. First operand 1581 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:34:28,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:28,072 INFO L93 Difference]: Finished difference Result 2975 states and 11781 transitions. [2020-01-16 18:34:28,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:28,072 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:28,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:28,080 INFO L225 Difference]: With dead ends: 2975 [2020-01-16 18:34:28,080 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:34:28,080 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 18:34:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:34:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1575. [2020-01-16 18:34:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:34:28,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7055 transitions. [2020-01-16 18:34:28,145 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7055 transitions. Word has length 28 [2020-01-16 18:34:28,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:28,145 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7055 transitions. [2020-01-16 18:34:28,145 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:28,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7055 transitions. [2020-01-16 18:34:28,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:28,147 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:28,147 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:28,147 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 18:34:28,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:28,148 INFO L82 PathProgramCache]: Analyzing trace with hash -259744952, now seen corresponding path program 221 times [2020-01-16 18:34:28,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:28,148 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728253206] [2020-01-16 18:34:28,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:28,633 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:34:28,760 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:28,767 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 18:34:28,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728253206] [2020-01-16 18:34:28,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:28,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:28,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857222317] [2020-01-16 18:34:28,768 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:28,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:28,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:28,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:28,769 INFO L87 Difference]: Start difference. First operand 1575 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:34:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:28,916 INFO L93 Difference]: Finished difference Result 2985 states and 11800 transitions. [2020-01-16 18:34:28,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:28,917 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:28,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:28,924 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:34:28,924 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:34:28,925 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 18:34:28,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:34:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1585. [2020-01-16 18:34:28,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:34:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7072 transitions. [2020-01-16 18:34:28,990 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7072 transitions. Word has length 28 [2020-01-16 18:34:28,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:28,990 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7072 transitions. [2020-01-16 18:34:28,990 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:28,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7072 transitions. [2020-01-16 18:34:28,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:28,993 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:28,993 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:28,993 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 18:34:28,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:28,993 INFO L82 PathProgramCache]: Analyzing trace with hash 484957546, now seen corresponding path program 222 times [2020-01-16 18:34:28,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:28,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141770025] [2020-01-16 18:34:28,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:29,472 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:34:29,599 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:29,606 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 18:34:29,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141770025] [2020-01-16 18:34:29,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:29,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:29,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063640062] [2020-01-16 18:34:29,607 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:29,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:29,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:29,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:29,608 INFO L87 Difference]: Start difference. First operand 1585 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:34:29,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:29,797 INFO L93 Difference]: Finished difference Result 2983 states and 11788 transitions. [2020-01-16 18:34:29,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:29,797 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:29,805 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:34:29,805 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:34:29,805 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 18:34:29,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:34:29,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1567. [2020-01-16 18:34:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:34:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7034 transitions. [2020-01-16 18:34:29,871 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7034 transitions. Word has length 28 [2020-01-16 18:34:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:29,871 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7034 transitions. [2020-01-16 18:34:29,871 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7034 transitions. [2020-01-16 18:34:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:29,873 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:29,874 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 18:34:29,874 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 18:34:29,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:29,874 INFO L82 PathProgramCache]: Analyzing trace with hash -437708336, now seen corresponding path program 223 times [2020-01-16 18:34:29,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:29,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037864031] [2020-01-16 18:34:29,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:30,468 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:30,475 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 18:34:30,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037864031] [2020-01-16 18:34:30,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:30,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:30,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816745316] [2020-01-16 18:34:30,476 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:30,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:30,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:30,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:30,476 INFO L87 Difference]: Start difference. First operand 1567 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:34:30,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:30,689 INFO L93 Difference]: Finished difference Result 2962 states and 11752 transitions. [2020-01-16 18:34:30,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:30,690 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:30,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:30,698 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:34:30,698 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:34:30,698 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 18:34:30,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:34:30,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1579. [2020-01-16 18:34:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:34:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7065 transitions. [2020-01-16 18:34:30,764 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7065 transitions. Word has length 28 [2020-01-16 18:34:30,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:30,764 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7065 transitions. [2020-01-16 18:34:30,764 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:30,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7065 transitions. [2020-01-16 18:34:30,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:30,766 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:30,766 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:30,767 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 18:34:30,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:30,767 INFO L82 PathProgramCache]: Analyzing trace with hash 306994162, now seen corresponding path program 224 times [2020-01-16 18:34:30,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:30,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017928306] [2020-01-16 18:34:30,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:31,282 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:34:31,411 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:31,418 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 18:34:31,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017928306] [2020-01-16 18:34:31,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:31,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:31,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768569991] [2020-01-16 18:34:31,419 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:31,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:31,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:31,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:31,420 INFO L87 Difference]: Start difference. First operand 1579 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:34:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:31,566 INFO L93 Difference]: Finished difference Result 2966 states and 11753 transitions. [2020-01-16 18:34:31,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:31,566 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:31,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:31,573 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:34:31,573 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:34:31,573 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:34:31,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:34:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1572. [2020-01-16 18:34:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:34:31,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7047 transitions. [2020-01-16 18:34:31,639 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7047 transitions. Word has length 28 [2020-01-16 18:34:31,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:31,639 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7047 transitions. [2020-01-16 18:34:31,639 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7047 transitions. [2020-01-16 18:34:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:31,641 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:31,641 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 18:34:31,642 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 18:34:31,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:31,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1711088200, now seen corresponding path program 225 times [2020-01-16 18:34:31,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:31,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817263199] [2020-01-16 18:34:31,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:32,226 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:32,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817263199] [2020-01-16 18:34:32,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:32,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:32,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866063960] [2020-01-16 18:34:32,234 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:32,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:32,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:32,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:32,235 INFO L87 Difference]: Start difference. First operand 1572 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:34:32,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:32,450 INFO L93 Difference]: Finished difference Result 2953 states and 11728 transitions. [2020-01-16 18:34:32,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:32,451 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:32,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:32,458 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:34:32,458 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:34:32,458 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 18:34:32,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:34:32,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1576. [2020-01-16 18:34:32,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:34:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7054 transitions. [2020-01-16 18:34:32,524 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7054 transitions. Word has length 28 [2020-01-16 18:34:32,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:32,524 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7054 transitions. [2020-01-16 18:34:32,524 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:32,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7054 transitions. [2020-01-16 18:34:32,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:32,526 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:32,526 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 18:34:32,527 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 18:34:32,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:32,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1139633394, now seen corresponding path program 226 times [2020-01-16 18:34:32,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:32,527 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970346623] [2020-01-16 18:34:32,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:33,150 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:33,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970346623] [2020-01-16 18:34:33,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:33,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:33,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87392187] [2020-01-16 18:34:33,164 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:33,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:33,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:33,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:33,165 INFO L87 Difference]: Start difference. First operand 1576 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:34:33,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:33,370 INFO L93 Difference]: Finished difference Result 2951 states and 11720 transitions. [2020-01-16 18:34:33,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:33,370 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:33,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:33,378 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:34:33,379 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:34:33,379 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 18:34:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:34:33,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1572. [2020-01-16 18:34:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:34:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7043 transitions. [2020-01-16 18:34:33,477 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7043 transitions. Word has length 28 [2020-01-16 18:34:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:33,477 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7043 transitions. [2020-01-16 18:34:33,477 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:33,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7043 transitions. [2020-01-16 18:34:33,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:33,479 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:33,479 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:33,479 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 18:34:33,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:33,480 INFO L82 PathProgramCache]: Analyzing trace with hash -228235640, now seen corresponding path program 227 times [2020-01-16 18:34:33,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:33,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932289824] [2020-01-16 18:34:33,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:33,941 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:34:34,067 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:34,074 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 18:34:34,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932289824] [2020-01-16 18:34:34,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:34,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:34,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961670277] [2020-01-16 18:34:34,075 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:34,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:34,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:34,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:34,075 INFO L87 Difference]: Start difference. First operand 1572 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:34:34,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:34,258 INFO L93 Difference]: Finished difference Result 2962 states and 11740 transitions. [2020-01-16 18:34:34,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:34,259 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:34,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:34,267 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:34:34,267 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:34:34,267 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 18:34:34,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:34:34,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1577. [2020-01-16 18:34:34,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:34:34,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7051 transitions. [2020-01-16 18:34:34,333 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7051 transitions. Word has length 28 [2020-01-16 18:34:34,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:34,333 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7051 transitions. [2020-01-16 18:34:34,333 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:34,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7051 transitions. [2020-01-16 18:34:34,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:34,335 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:34,335 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 18:34:34,336 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 18:34:34,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:34,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1544392944, now seen corresponding path program 228 times [2020-01-16 18:34:34,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:34,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411648944] [2020-01-16 18:34:34,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:34,922 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:34,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:34,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411648944] [2020-01-16 18:34:34,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:34,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:34,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213142589] [2020-01-16 18:34:34,930 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:34,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:34,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:34,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:34,931 INFO L87 Difference]: Start difference. First operand 1577 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:34:35,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:35,136 INFO L93 Difference]: Finished difference Result 2956 states and 11724 transitions. [2020-01-16 18:34:35,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:35,137 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:35,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:35,144 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:34:35,144 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:34:35,144 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 18:34:35,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:34:35,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1567. [2020-01-16 18:34:35,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:34:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 18:34:35,209 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 18:34:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:35,210 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 18:34:35,210 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 18:34:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:35,212 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:35,212 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 18:34:35,212 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 18:34:35,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:35,212 INFO L82 PathProgramCache]: Analyzing trace with hash -427205232, now seen corresponding path program 229 times [2020-01-16 18:34:35,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:35,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958552921] [2020-01-16 18:34:35,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:35,787 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:35,795 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 18:34:35,795 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958552921] [2020-01-16 18:34:35,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:35,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:35,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880459455] [2020-01-16 18:34:35,795 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:35,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:35,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:35,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:35,796 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:34:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:35,997 INFO L93 Difference]: Finished difference Result 2954 states and 11732 transitions. [2020-01-16 18:34:35,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:35,997 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:36,005 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 18:34:36,005 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:34:36,005 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 18:34:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:34:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 18:34:36,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:34:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7055 transitions. [2020-01-16 18:34:36,071 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7055 transitions. Word has length 28 [2020-01-16 18:34:36,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:36,071 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7055 transitions. [2020-01-16 18:34:36,071 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7055 transitions. [2020-01-16 18:34:36,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:36,073 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:36,073 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:36,074 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 18:34:36,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:36,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1062199764, now seen corresponding path program 230 times [2020-01-16 18:34:36,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:36,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30164810] [2020-01-16 18:34:36,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:36,670 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:36,677 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 18:34:36,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30164810] [2020-01-16 18:34:36,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:36,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:36,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875539090] [2020-01-16 18:34:36,678 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:36,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:36,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:36,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:36,679 INFO L87 Difference]: Start difference. First operand 1577 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:34:36,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:36,893 INFO L93 Difference]: Finished difference Result 2956 states and 11730 transitions. [2020-01-16 18:34:36,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:36,894 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:36,902 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:34:36,902 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:34:36,903 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:34:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:34:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1571. [2020-01-16 18:34:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:34:36,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:34:36,974 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:34:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:36,974 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:34:36,974 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:34:36,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:36,977 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:36,977 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 18:34:36,977 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 18:34:36,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:36,978 INFO L82 PathProgramCache]: Analyzing trace with hash 110650346, now seen corresponding path program 231 times [2020-01-16 18:34:36,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:36,978 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724678193] [2020-01-16 18:34:36,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:37,543 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:37,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724678193] [2020-01-16 18:34:37,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:37,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:37,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816551711] [2020-01-16 18:34:37,550 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:37,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:37,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:37,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:37,550 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:34:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:37,772 INFO L93 Difference]: Finished difference Result 2948 states and 11714 transitions. [2020-01-16 18:34:37,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:37,772 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:37,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:37,780 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:34:37,780 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:34:37,780 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 18:34:37,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:34:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1575. [2020-01-16 18:34:37,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:34:37,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7047 transitions. [2020-01-16 18:34:37,846 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7047 transitions. Word has length 28 [2020-01-16 18:34:37,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:37,847 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7047 transitions. [2020-01-16 18:34:37,847 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:37,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7047 transitions. [2020-01-16 18:34:37,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:37,849 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:37,849 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 18:34:37,849 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 18:34:37,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:37,849 INFO L82 PathProgramCache]: Analyzing trace with hash -460804460, now seen corresponding path program 232 times [2020-01-16 18:34:37,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:37,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486955758] [2020-01-16 18:34:37,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:38,432 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:38,439 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 18:34:38,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486955758] [2020-01-16 18:34:38,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:38,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:38,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911531296] [2020-01-16 18:34:38,440 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:38,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:38,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:38,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:38,440 INFO L87 Difference]: Start difference. First operand 1575 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:34:38,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:38,678 INFO L93 Difference]: Finished difference Result 2946 states and 11706 transitions. [2020-01-16 18:34:38,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:38,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:38,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:38,686 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:34:38,686 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:34:38,686 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 18:34:38,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:34:38,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1571. [2020-01-16 18:34:38,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:34:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:34:38,752 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:34:38,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:38,752 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:34:38,752 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:38,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:34:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:38,754 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:38,754 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:38,754 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 18:34:38,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:38,755 INFO L82 PathProgramCache]: Analyzing trace with hash 526969962, now seen corresponding path program 233 times [2020-01-16 18:34:38,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:38,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648822086] [2020-01-16 18:34:38,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:39,207 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:34:39,337 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:39,345 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 18:34:39,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648822086] [2020-01-16 18:34:39,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:39,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:39,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842507938] [2020-01-16 18:34:39,345 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:39,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:39,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:39,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:39,346 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:34:39,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:39,539 INFO L93 Difference]: Finished difference Result 2952 states and 11718 transitions. [2020-01-16 18:34:39,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:39,540 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:39,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:39,547 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:34:39,547 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:34:39,547 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 18:34:39,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:34:39,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1575. [2020-01-16 18:34:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:34:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7043 transitions. [2020-01-16 18:34:39,613 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7043 transitions. Word has length 28 [2020-01-16 18:34:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:39,613 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7043 transitions. [2020-01-16 18:34:39,613 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7043 transitions. [2020-01-16 18:34:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:39,616 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:39,616 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 18:34:39,616 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 18:34:39,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:39,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1533889840, now seen corresponding path program 234 times [2020-01-16 18:34:39,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:39,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551977343] [2020-01-16 18:34:39,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:40,207 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:40,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551977343] [2020-01-16 18:34:40,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:40,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:40,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076590898] [2020-01-16 18:34:40,214 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:40,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:40,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:40,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:40,215 INFO L87 Difference]: Start difference. First operand 1575 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:34:40,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:40,413 INFO L93 Difference]: Finished difference Result 2948 states and 11706 transitions. [2020-01-16 18:34:40,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:40,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:40,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:40,421 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:34:40,422 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:34:40,422 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:34:40,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:34:40,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1567. [2020-01-16 18:34:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:34:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 18:34:40,487 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 18:34:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:40,487 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 18:34:40,487 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:40,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 18:34:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:40,490 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:40,490 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 18:34:40,490 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 18:34:40,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:40,490 INFO L82 PathProgramCache]: Analyzing trace with hash 328000370, now seen corresponding path program 235 times [2020-01-16 18:34:40,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:40,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614954761] [2020-01-16 18:34:40,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:40,975 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:34:41,101 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:41,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614954761] [2020-01-16 18:34:41,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:41,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:41,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558014568] [2020-01-16 18:34:41,109 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:41,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:41,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:41,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:41,109 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:34:41,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:41,266 INFO L93 Difference]: Finished difference Result 2977 states and 11774 transitions. [2020-01-16 18:34:41,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:41,266 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:41,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:41,274 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:34:41,274 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:34:41,275 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 18:34:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:34:41,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1583. [2020-01-16 18:34:41,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:34:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7062 transitions. [2020-01-16 18:34:41,342 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7062 transitions. Word has length 28 [2020-01-16 18:34:41,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:41,343 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7062 transitions. [2020-01-16 18:34:41,343 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:41,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7062 transitions. [2020-01-16 18:34:41,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:41,345 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:41,345 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 18:34:41,345 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 18:34:41,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:41,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1072702868, now seen corresponding path program 236 times [2020-01-16 18:34:41,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:41,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110506032] [2020-01-16 18:34:41,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:41,818 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:34:41,943 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:41,974 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 18:34:41,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110506032] [2020-01-16 18:34:41,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:41,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:41,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441572934] [2020-01-16 18:34:41,974 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:41,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:41,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:41,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:41,975 INFO L87 Difference]: Start difference. First operand 1583 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:34:42,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:42,178 INFO L93 Difference]: Finished difference Result 2975 states and 11762 transitions. [2020-01-16 18:34:42,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:42,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:42,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:42,186 INFO L225 Difference]: With dead ends: 2975 [2020-01-16 18:34:42,186 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:34:42,186 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 18:34:42,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:34:42,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1573. [2020-01-16 18:34:42,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:34:42,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7039 transitions. [2020-01-16 18:34:42,252 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7039 transitions. Word has length 28 [2020-01-16 18:34:42,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:42,252 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7039 transitions. [2020-01-16 18:34:42,253 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:42,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7039 transitions. [2020-01-16 18:34:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:42,255 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:42,255 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:42,255 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 18:34:42,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:42,255 INFO L82 PathProgramCache]: Analyzing trace with hash 865855948, now seen corresponding path program 237 times [2020-01-16 18:34:42,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:42,255 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541982223] [2020-01-16 18:34:42,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:42,735 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:34:42,863 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:42,870 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 18:34:42,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541982223] [2020-01-16 18:34:42,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:42,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:42,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076772477] [2020-01-16 18:34:42,871 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:42,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:42,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:42,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:42,871 INFO L87 Difference]: Start difference. First operand 1573 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:34:43,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:43,024 INFO L93 Difference]: Finished difference Result 2968 states and 11747 transitions. [2020-01-16 18:34:43,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:43,025 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:43,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:43,032 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:34:43,033 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:34:43,033 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 18:34:43,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:34:43,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1578. [2020-01-16 18:34:43,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:34:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7047 transitions. [2020-01-16 18:34:43,098 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7047 transitions. Word has length 28 [2020-01-16 18:34:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:43,098 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7047 transitions. [2020-01-16 18:34:43,098 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7047 transitions. [2020-01-16 18:34:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:43,101 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:43,101 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 18:34:43,101 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 18:34:43,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:43,101 INFO L82 PathProgramCache]: Analyzing trace with hash -450301356, now seen corresponding path program 238 times [2020-01-16 18:34:43,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:43,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558483320] [2020-01-16 18:34:43,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:43,698 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:43,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558483320] [2020-01-16 18:34:43,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:43,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:43,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776664425] [2020-01-16 18:34:43,706 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:43,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:43,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:43,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:43,706 INFO L87 Difference]: Start difference. First operand 1578 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:34:43,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:43,925 INFO L93 Difference]: Finished difference Result 2962 states and 11731 transitions. [2020-01-16 18:34:43,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:43,926 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:43,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:43,933 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:34:43,933 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 18:34:43,933 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 18:34:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 18:34:43,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1573. [2020-01-16 18:34:43,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:34:43,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7034 transitions. [2020-01-16 18:34:43,999 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7034 transitions. Word has length 28 [2020-01-16 18:34:43,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:43,999 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7034 transitions. [2020-01-16 18:34:43,999 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:43,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7034 transitions. [2020-01-16 18:34:44,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:44,001 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:44,001 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:44,001 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 18:34:44,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:44,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1073467892, now seen corresponding path program 239 times [2020-01-16 18:34:44,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:44,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185455698] [2020-01-16 18:34:44,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:44,611 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:44,618 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 18:34:44,618 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185455698] [2020-01-16 18:34:44,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:44,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:44,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518954911] [2020-01-16 18:34:44,619 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:44,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:44,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:44,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:44,619 INFO L87 Difference]: Start difference. First operand 1573 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:34:44,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:44,817 INFO L93 Difference]: Finished difference Result 2963 states and 11734 transitions. [2020-01-16 18:34:44,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:44,818 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:44,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:44,825 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:34:44,825 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:34:44,826 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 18:34:44,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:34:44,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1577. [2020-01-16 18:34:44,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:34:44,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7041 transitions. [2020-01-16 18:34:44,892 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7041 transitions. Word has length 28 [2020-01-16 18:34:44,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:44,892 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7041 transitions. [2020-01-16 18:34:44,892 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:44,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7041 transitions. [2020-01-16 18:34:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:44,894 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:44,894 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 18:34:44,894 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 18:34:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:44,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1160639602, now seen corresponding path program 240 times [2020-01-16 18:34:44,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:44,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358387056] [2020-01-16 18:34:44,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:45,506 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:34:45,513 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 18:34:45,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358387056] [2020-01-16 18:34:45,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:45,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:45,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956660709] [2020-01-16 18:34:45,514 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:45,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:45,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:45,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:45,515 INFO L87 Difference]: Start difference. First operand 1577 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:34:45,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:45,724 INFO L93 Difference]: Finished difference Result 2959 states and 11722 transitions. [2020-01-16 18:34:45,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:45,725 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:45,732 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:34:45,732 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 18:34:45,733 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 18:34:45,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 18:34:45,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1555. [2020-01-16 18:34:45,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 18:34:45,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6997 transitions. [2020-01-16 18:34:45,799 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6997 transitions. Word has length 28 [2020-01-16 18:34:45,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:45,799 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 6997 transitions. [2020-01-16 18:34:45,799 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:45,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6997 transitions. [2020-01-16 18:34:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:45,801 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:45,801 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:45,802 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 18:34:45,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:45,802 INFO L82 PathProgramCache]: Analyzing trace with hash 424017834, now seen corresponding path program 241 times [2020-01-16 18:34:45,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:45,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668853933] [2020-01-16 18:34:45,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:46,402 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:46,409 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 18:34:46,410 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668853933] [2020-01-16 18:34:46,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:46,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:46,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042150227] [2020-01-16 18:34:46,410 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:46,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:46,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:46,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:46,411 INFO L87 Difference]: Start difference. First operand 1555 states and 6997 transitions. Second operand 11 states. [2020-01-16 18:34:46,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:46,632 INFO L93 Difference]: Finished difference Result 2936 states and 11714 transitions. [2020-01-16 18:34:46,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:46,633 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:46,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:46,640 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 18:34:46,641 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:34:46,641 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 18:34:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:34:46,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1576. [2020-01-16 18:34:46,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:34:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7079 transitions. [2020-01-16 18:34:46,707 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7079 transitions. Word has length 28 [2020-01-16 18:34:46,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:46,707 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7079 transitions. [2020-01-16 18:34:46,707 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:46,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7079 transitions. [2020-01-16 18:34:46,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:46,709 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:46,709 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 18:34:46,709 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 18:34:46,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:46,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1168720332, now seen corresponding path program 242 times [2020-01-16 18:34:46,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:46,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465652440] [2020-01-16 18:34:46,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:47,304 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:47,311 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 18:34:47,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465652440] [2020-01-16 18:34:47,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:47,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:47,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74695986] [2020-01-16 18:34:47,312 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:47,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:47,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:47,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:47,312 INFO L87 Difference]: Start difference. First operand 1576 states and 7079 transitions. Second operand 11 states. [2020-01-16 18:34:47,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:47,526 INFO L93 Difference]: Finished difference Result 2937 states and 11711 transitions. [2020-01-16 18:34:47,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:47,526 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:47,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:47,534 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:34:47,534 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:34:47,534 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 18:34:47,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:34:47,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1571. [2020-01-16 18:34:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:34:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7065 transitions. [2020-01-16 18:34:47,600 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7065 transitions. Word has length 28 [2020-01-16 18:34:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:47,600 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7065 transitions. [2020-01-16 18:34:47,600 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:47,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7065 transitions. [2020-01-16 18:34:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:47,602 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:47,602 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:47,602 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 18:34:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:47,603 INFO L82 PathProgramCache]: Analyzing trace with hash 2034958792, now seen corresponding path program 243 times [2020-01-16 18:34:47,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:47,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523955841] [2020-01-16 18:34:47,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:48,188 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:48,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523955841] [2020-01-16 18:34:48,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:48,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:48,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088098160] [2020-01-16 18:34:48,196 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:48,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:48,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:48,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:48,196 INFO L87 Difference]: Start difference. First operand 1571 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:34:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:48,440 INFO L93 Difference]: Finished difference Result 2941 states and 11718 transitions. [2020-01-16 18:34:48,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:48,440 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:48,448 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:34:48,448 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:34:48,448 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 18:34:48,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:34:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1577. [2020-01-16 18:34:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:34:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7076 transitions. [2020-01-16 18:34:48,514 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7076 transitions. Word has length 28 [2020-01-16 18:34:48,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:48,514 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7076 transitions. [2020-01-16 18:34:48,514 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7076 transitions. [2020-01-16 18:34:48,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:48,517 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:48,517 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:48,517 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 18:34:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:48,517 INFO L82 PathProgramCache]: Analyzing trace with hash -770603508, now seen corresponding path program 244 times [2020-01-16 18:34:48,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:48,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8985022] [2020-01-16 18:34:48,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:49,001 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 30 [2020-01-16 18:34:49,129 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:49,136 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 18:34:49,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8985022] [2020-01-16 18:34:49,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:49,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:49,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364967229] [2020-01-16 18:34:49,137 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:49,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:49,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:49,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:49,137 INFO L87 Difference]: Start difference. First operand 1577 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:34:49,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:49,302 INFO L93 Difference]: Finished difference Result 2946 states and 11722 transitions. [2020-01-16 18:34:49,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:49,302 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:49,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:49,310 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:34:49,310 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:34:49,310 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 18:34:49,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:34:49,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1571. [2020-01-16 18:34:49,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:34:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7059 transitions. [2020-01-16 18:34:49,378 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7059 transitions. Word has length 28 [2020-01-16 18:34:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:49,378 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7059 transitions. [2020-01-16 18:34:49,378 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:49,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7059 transitions. [2020-01-16 18:34:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:49,380 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:49,380 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 18:34:49,380 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 18:34:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:49,380 INFO L82 PathProgramCache]: Analyzing trace with hash 95634952, now seen corresponding path program 245 times [2020-01-16 18:34:49,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:49,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829661523] [2020-01-16 18:34:49,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:49,980 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:49,985 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 18:34:49,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829661523] [2020-01-16 18:34:49,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:49,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:49,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762011006] [2020-01-16 18:34:49,986 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:49,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:49,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:49,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:49,987 INFO L87 Difference]: Start difference. First operand 1571 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:34:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:50,219 INFO L93 Difference]: Finished difference Result 2944 states and 11719 transitions. [2020-01-16 18:34:50,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:50,219 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:50,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:50,226 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 18:34:50,226 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:34:50,226 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 18:34:50,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:34:50,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1578. [2020-01-16 18:34:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:34:50,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7072 transitions. [2020-01-16 18:34:50,292 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7072 transitions. Word has length 28 [2020-01-16 18:34:50,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:50,293 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7072 transitions. [2020-01-16 18:34:50,293 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:50,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7072 transitions. [2020-01-16 18:34:50,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:50,295 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:50,295 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 18:34:50,295 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 18:34:50,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:50,295 INFO L82 PathProgramCache]: Analyzing trace with hash 840337450, now seen corresponding path program 246 times [2020-01-16 18:34:50,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:50,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548917605] [2020-01-16 18:34:50,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:50,773 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 18:34:50,899 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:50,906 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 18:34:50,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548917605] [2020-01-16 18:34:50,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:50,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:50,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366513255] [2020-01-16 18:34:50,907 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:50,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:50,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:50,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:50,908 INFO L87 Difference]: Start difference. First operand 1578 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:34:51,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:51,113 INFO L93 Difference]: Finished difference Result 2948 states and 11720 transitions. [2020-01-16 18:34:51,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:51,114 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:51,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:51,121 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:34:51,121 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 18:34:51,121 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 18:34:51,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 18:34:51,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1565. [2020-01-16 18:34:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:34:51,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7043 transitions. [2020-01-16 18:34:51,187 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7043 transitions. Word has length 28 [2020-01-16 18:34:51,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:51,188 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7043 transitions. [2020-01-16 18:34:51,188 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:51,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7043 transitions. [2020-01-16 18:34:51,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:51,190 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:51,190 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 18:34:51,190 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 18:34:51,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:51,190 INFO L82 PathProgramCache]: Analyzing trace with hash 216894948, now seen corresponding path program 247 times [2020-01-16 18:34:51,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:51,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126702907] [2020-01-16 18:34:51,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:51,790 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:51,797 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126702907] [2020-01-16 18:34:51,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:51,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:51,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031598631] [2020-01-16 18:34:51,797 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:51,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:51,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:51,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:51,798 INFO L87 Difference]: Start difference. First operand 1565 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:34:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:52,000 INFO L93 Difference]: Finished difference Result 2923 states and 11678 transitions. [2020-01-16 18:34:52,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:52,000 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:52,008 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:34:52,008 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:34:52,008 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 18:34:52,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:34:52,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1574. [2020-01-16 18:34:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:34:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7067 transitions. [2020-01-16 18:34:52,074 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7067 transitions. Word has length 28 [2020-01-16 18:34:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:52,074 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7067 transitions. [2020-01-16 18:34:52,074 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:52,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7067 transitions. [2020-01-16 18:34:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:52,077 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:52,078 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 18:34:52,078 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 18:34:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:52,078 INFO L82 PathProgramCache]: Analyzing trace with hash 961597446, now seen corresponding path program 248 times [2020-01-16 18:34:52,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:52,078 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255558986] [2020-01-16 18:34:52,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:52,679 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:52,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255558986] [2020-01-16 18:34:52,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:52,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:52,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360133512] [2020-01-16 18:34:52,688 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:52,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:52,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:52,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:52,688 INFO L87 Difference]: Start difference. First operand 1574 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:34:52,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:52,940 INFO L93 Difference]: Finished difference Result 2924 states and 11675 transitions. [2020-01-16 18:34:52,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:52,943 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:52,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:52,951 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:34:52,951 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 18:34:52,951 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 18:34:53,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 18:34:53,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1569. [2020-01-16 18:34:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:34:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7054 transitions. [2020-01-16 18:34:53,031 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7054 transitions. Word has length 28 [2020-01-16 18:34:53,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:53,031 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7054 transitions. [2020-01-16 18:34:53,032 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:53,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7054 transitions. [2020-01-16 18:34:53,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:53,034 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:53,034 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 18:34:53,034 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 18:34:53,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:53,035 INFO L82 PathProgramCache]: Analyzing trace with hash -318334854, now seen corresponding path program 249 times [2020-01-16 18:34:53,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:53,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539260758] [2020-01-16 18:34:53,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:53,638 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:53,645 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 18:34:53,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539260758] [2020-01-16 18:34:53,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:53,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:53,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224843872] [2020-01-16 18:34:53,646 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:53,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:53,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:53,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:53,646 INFO L87 Difference]: Start difference. First operand 1569 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:34:53,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:53,859 INFO L93 Difference]: Finished difference Result 2920 states and 11667 transitions. [2020-01-16 18:34:53,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:53,860 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:53,867 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 18:34:53,867 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 18:34:53,867 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 18:34:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 18:34:53,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1573. [2020-01-16 18:34:53,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:34:53,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7061 transitions. [2020-01-16 18:34:53,933 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7061 transitions. Word has length 28 [2020-01-16 18:34:53,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:53,933 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7061 transitions. [2020-01-16 18:34:53,933 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:53,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7061 transitions. [2020-01-16 18:34:53,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:53,936 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:53,936 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:53,936 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 18:34:53,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:53,936 INFO L82 PathProgramCache]: Analyzing trace with hash -145087162, now seen corresponding path program 250 times [2020-01-16 18:34:53,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:53,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287018311] [2020-01-16 18:34:53,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:54,529 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:34:54,535 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 18:34:54,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287018311] [2020-01-16 18:34:54,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:54,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:54,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578529773] [2020-01-16 18:34:54,536 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:54,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:54,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:54,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:54,537 INFO L87 Difference]: Start difference. First operand 1573 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:34:54,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:54,748 INFO L93 Difference]: Finished difference Result 2919 states and 11661 transitions. [2020-01-16 18:34:54,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:54,749 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:54,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:54,755 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 18:34:54,755 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 18:34:54,755 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 18:34:54,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 18:34:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1569. [2020-01-16 18:34:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:34:54,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7050 transitions. [2020-01-16 18:34:54,821 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7050 transitions. Word has length 28 [2020-01-16 18:34:54,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:54,821 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7050 transitions. [2020-01-16 18:34:54,821 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:54,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7050 transitions. [2020-01-16 18:34:54,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:54,823 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:54,823 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 18:34:54,823 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 18:34:54,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:54,824 INFO L82 PathProgramCache]: Analyzing trace with hash 2037308602, now seen corresponding path program 251 times [2020-01-16 18:34:54,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:54,824 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091467576] [2020-01-16 18:34:54,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:55,427 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:55,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:55,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091467576] [2020-01-16 18:34:55,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:55,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:55,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799773880] [2020-01-16 18:34:55,436 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:55,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:55,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:55,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:55,436 INFO L87 Difference]: Start difference. First operand 1569 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:34:55,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:55,723 INFO L93 Difference]: Finished difference Result 2922 states and 11667 transitions. [2020-01-16 18:34:55,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:55,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:55,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:55,730 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:34:55,730 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:34:55,730 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:34:55,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:34:55,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1573. [2020-01-16 18:34:55,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:34:55,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7057 transitions. [2020-01-16 18:34:55,797 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7057 transitions. Word has length 28 [2020-01-16 18:34:55,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:55,797 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7057 transitions. [2020-01-16 18:34:55,797 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:55,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7057 transitions. [2020-01-16 18:34:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:55,800 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:55,800 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 18:34:55,800 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 18:34:55,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:55,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1465853796, now seen corresponding path program 252 times [2020-01-16 18:34:55,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:55,800 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338310639] [2020-01-16 18:34:55,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:56,272 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:34:56,402 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:34:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:56,408 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338310639] [2020-01-16 18:34:56,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:56,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:56,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514227190] [2020-01-16 18:34:56,409 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:56,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:56,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:56,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:56,409 INFO L87 Difference]: Start difference. First operand 1573 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:34:56,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:56,667 INFO L93 Difference]: Finished difference Result 2920 states and 11659 transitions. [2020-01-16 18:34:56,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:56,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:56,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:56,675 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 18:34:56,675 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 18:34:56,675 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 18:34:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 18:34:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1565. [2020-01-16 18:34:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:34:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7039 transitions. [2020-01-16 18:34:56,741 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7039 transitions. Word has length 28 [2020-01-16 18:34:56,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:56,742 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7039 transitions. [2020-01-16 18:34:56,742 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7039 transitions. [2020-01-16 18:34:56,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:56,744 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:56,744 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 18:34:56,744 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 18:34:56,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:56,744 INFO L82 PathProgramCache]: Analyzing trace with hash 227398052, now seen corresponding path program 253 times [2020-01-16 18:34:56,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:56,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356120901] [2020-01-16 18:34:56,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:57,333 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:57,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356120901] [2020-01-16 18:34:57,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:57,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:57,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657187982] [2020-01-16 18:34:57,341 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:57,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:57,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:57,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:57,341 INFO L87 Difference]: Start difference. First operand 1565 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:34:57,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:57,621 INFO L93 Difference]: Finished difference Result 2935 states and 11697 transitions. [2020-01-16 18:34:57,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:57,621 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:57,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:57,629 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 18:34:57,629 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:34:57,629 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 18:34:57,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:34:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1576. [2020-01-16 18:34:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:34:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7068 transitions. [2020-01-16 18:34:57,695 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7068 transitions. Word has length 28 [2020-01-16 18:34:57,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:57,695 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7068 transitions. [2020-01-16 18:34:57,695 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7068 transitions. [2020-01-16 18:34:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:57,698 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:57,698 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:34:57,698 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 18:34:57,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:57,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1716803048, now seen corresponding path program 254 times [2020-01-16 18:34:57,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:57,698 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594577617] [2020-01-16 18:34:57,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:58,175 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 30 [2020-01-16 18:34:58,325 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:58,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594577617] [2020-01-16 18:34:58,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:58,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:58,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733838193] [2020-01-16 18:34:58,332 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:58,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:58,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:58,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:58,333 INFO L87 Difference]: Start difference. First operand 1576 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:34:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:58,502 INFO L93 Difference]: Finished difference Result 2940 states and 11701 transitions. [2020-01-16 18:34:58,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:58,503 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:58,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:58,510 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:34:58,510 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 18:34:58,511 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:34:58,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 18:34:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1570. [2020-01-16 18:34:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:34:58,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 18:34:58,576 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 18:34:58,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:58,576 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 18:34:58,576 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:58,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 18:34:58,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:58,579 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:58,579 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 18:34:58,579 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 18:34:58,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:58,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1918772708, now seen corresponding path program 255 times [2020-01-16 18:34:58,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:58,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44318737] [2020-01-16 18:34:58,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:34:59,183 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:34:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:34:59,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44318737] [2020-01-16 18:34:59,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:34:59,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:34:59,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557651321] [2020-01-16 18:34:59,191 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:34:59,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:34:59,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:34:59,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:34:59,192 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:34:59,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:34:59,441 INFO L93 Difference]: Finished difference Result 2927 states and 11676 transitions. [2020-01-16 18:34:59,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:34:59,442 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:34:59,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:34:59,449 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 18:34:59,450 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 18:34:59,450 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 18:34:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 18:34:59,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1574. [2020-01-16 18:34:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:34:59,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7059 transitions. [2020-01-16 18:34:59,517 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7059 transitions. Word has length 28 [2020-01-16 18:34:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:34:59,517 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7059 transitions. [2020-01-16 18:34:59,517 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:34:59,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7059 transitions. [2020-01-16 18:34:59,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:34:59,520 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:34:59,520 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 18:34:59,520 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 18:34:59,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:34:59,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1745525016, now seen corresponding path program 256 times [2020-01-16 18:34:59,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:34:59,520 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31965030] [2020-01-16 18:34:59,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:34:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:00,121 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:00,128 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 18:35:00,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31965030] [2020-01-16 18:35:00,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:00,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:00,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251888190] [2020-01-16 18:35:00,129 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:00,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:00,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:00,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:00,129 INFO L87 Difference]: Start difference. First operand 1574 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:35:00,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:00,336 INFO L93 Difference]: Finished difference Result 2926 states and 11670 transitions. [2020-01-16 18:35:00,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:00,337 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:00,344 INFO L225 Difference]: With dead ends: 2926 [2020-01-16 18:35:00,344 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:35:00,344 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 18:35:00,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:35:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1570. [2020-01-16 18:35:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:35:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7048 transitions. [2020-01-16 18:35:00,409 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7048 transitions. Word has length 28 [2020-01-16 18:35:00,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:00,409 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7048 transitions. [2020-01-16 18:35:00,409 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:00,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7048 transitions. [2020-01-16 18:35:00,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:00,412 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:00,412 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 18:35:00,412 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 18:35:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:00,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1502453092, now seen corresponding path program 257 times [2020-01-16 18:35:00,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:00,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375234415] [2020-01-16 18:35:00,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:00,884 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 18:35:01,011 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:01,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375234415] [2020-01-16 18:35:01,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:01,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:01,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850364565] [2020-01-16 18:35:01,019 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:01,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:01,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:01,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:01,019 INFO L87 Difference]: Start difference. First operand 1570 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:35:01,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:01,193 INFO L93 Difference]: Finished difference Result 2938 states and 11692 transitions. [2020-01-16 18:35:01,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:01,194 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:01,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:01,201 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 18:35:01,201 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 18:35:01,202 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 18:35:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 18:35:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1575. [2020-01-16 18:35:01,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:35:01,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7056 transitions. [2020-01-16 18:35:01,270 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7056 transitions. Word has length 28 [2020-01-16 18:35:01,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:01,270 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7056 transitions. [2020-01-16 18:35:01,270 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7056 transitions. [2020-01-16 18:35:01,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:01,273 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:01,273 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 18:35:01,273 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 18:35:01,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:01,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1476356900, now seen corresponding path program 258 times [2020-01-16 18:35:01,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:01,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30057203] [2020-01-16 18:35:01,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:01,866 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:01,872 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 18:35:01,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30057203] [2020-01-16 18:35:01,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:01,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:01,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19727393] [2020-01-16 18:35:01,873 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:01,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:01,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:01,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:01,873 INFO L87 Difference]: Start difference. First operand 1575 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:35:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:02,121 INFO L93 Difference]: Finished difference Result 2932 states and 11676 transitions. [2020-01-16 18:35:02,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:02,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:02,130 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 18:35:02,130 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:35:02,130 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:35:02,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:35:02,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1565. [2020-01-16 18:35:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:35:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7034 transitions. [2020-01-16 18:35:02,196 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7034 transitions. Word has length 28 [2020-01-16 18:35:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:02,196 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7034 transitions. [2020-01-16 18:35:02,196 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7034 transitions. [2020-01-16 18:35:02,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:02,198 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:02,198 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:02,198 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 18:35:02,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:02,198 INFO L82 PathProgramCache]: Analyzing trace with hash 982603654, now seen corresponding path program 259 times [2020-01-16 18:35:02,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:02,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760552638] [2020-01-16 18:35:02,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:02,671 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:35:02,804 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:02,811 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 18:35:02,811 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760552638] [2020-01-16 18:35:02,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:02,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:02,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123947780] [2020-01-16 18:35:02,812 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:02,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:02,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:02,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:02,812 INFO L87 Difference]: Start difference. First operand 1565 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:35:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:03,029 INFO L93 Difference]: Finished difference Result 2940 states and 11704 transitions. [2020-01-16 18:35:03,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:03,029 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:03,037 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:35:03,037 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:35:03,037 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 18:35:03,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:35:03,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1577. [2020-01-16 18:35:03,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:35:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7065 transitions. [2020-01-16 18:35:03,104 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7065 transitions. Word has length 28 [2020-01-16 18:35:03,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:03,104 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7065 transitions. [2020-01-16 18:35:03,104 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:03,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7065 transitions. [2020-01-16 18:35:03,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:03,107 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:03,107 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:03,107 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 18:35:03,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:03,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1727306152, now seen corresponding path program 260 times [2020-01-16 18:35:03,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:03,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302100790] [2020-01-16 18:35:03,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:03,586 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:35:03,715 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:03,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302100790] [2020-01-16 18:35:03,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:03,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:03,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325353303] [2020-01-16 18:35:03,722 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:03,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:03,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:03,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:03,723 INFO L87 Difference]: Start difference. First operand 1577 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:35:03,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:03,907 INFO L93 Difference]: Finished difference Result 2944 states and 11705 transitions. [2020-01-16 18:35:03,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:03,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:03,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:03,915 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 18:35:03,915 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 18:35:03,916 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 18:35:03,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 18:35:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1570. [2020-01-16 18:35:03,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:35:03,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7047 transitions. [2020-01-16 18:35:03,983 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7047 transitions. Word has length 28 [2020-01-16 18:35:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:03,983 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7047 transitions. [2020-01-16 18:35:03,983 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7047 transitions. [2020-01-16 18:35:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:03,986 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:03,986 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:03,986 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 18:35:03,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:03,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1163567106, now seen corresponding path program 261 times [2020-01-16 18:35:03,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:03,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633941148] [2020-01-16 18:35:03,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:04,449 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:35:04,581 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:04,588 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 18:35:04,588 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633941148] [2020-01-16 18:35:04,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:04,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:04,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560346610] [2020-01-16 18:35:04,589 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:04,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:04,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:04,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:04,589 INFO L87 Difference]: Start difference. First operand 1570 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:35:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:04,790 INFO L93 Difference]: Finished difference Result 2931 states and 11680 transitions. [2020-01-16 18:35:04,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:04,790 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:04,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:04,797 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 18:35:04,797 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 18:35:04,797 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 18:35:04,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 18:35:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1574. [2020-01-16 18:35:04,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:35:04,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7054 transitions. [2020-01-16 18:35:04,865 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7054 transitions. Word has length 28 [2020-01-16 18:35:04,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:04,865 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7054 transitions. [2020-01-16 18:35:04,865 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:04,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7054 transitions. [2020-01-16 18:35:04,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:04,868 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:04,868 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:04,868 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 18:35:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:04,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1735021912, now seen corresponding path program 262 times [2020-01-16 18:35:04,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:04,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050644218] [2020-01-16 18:35:04,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:05,471 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:05,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050644218] [2020-01-16 18:35:05,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:05,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:05,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204143984] [2020-01-16 18:35:05,479 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:05,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:05,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:05,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:05,479 INFO L87 Difference]: Start difference. First operand 1574 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:35:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:05,685 INFO L93 Difference]: Finished difference Result 2929 states and 11672 transitions. [2020-01-16 18:35:05,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:05,686 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:05,694 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:35:05,694 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:35:05,694 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:35:05,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:35:05,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1570. [2020-01-16 18:35:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:35:05,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7043 transitions. [2020-01-16 18:35:05,766 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7043 transitions. Word has length 28 [2020-01-16 18:35:05,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:05,766 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7043 transitions. [2020-01-16 18:35:05,766 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:05,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7043 transitions. [2020-01-16 18:35:05,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:05,769 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:05,769 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:05,769 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 18:35:05,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:05,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1192076350, now seen corresponding path program 263 times [2020-01-16 18:35:05,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:05,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545058098] [2020-01-16 18:35:05,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:06,229 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:35:06,363 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:06,370 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 18:35:06,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545058098] [2020-01-16 18:35:06,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:06,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:06,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156119112] [2020-01-16 18:35:06,371 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:06,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:06,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:06,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:06,371 INFO L87 Difference]: Start difference. First operand 1570 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:35:06,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:06,546 INFO L93 Difference]: Finished difference Result 2940 states and 11692 transitions. [2020-01-16 18:35:06,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:06,546 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:06,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:06,554 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:35:06,554 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:35:06,554 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 18:35:06,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:35:06,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1575. [2020-01-16 18:35:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:35:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7051 transitions. [2020-01-16 18:35:06,621 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7051 transitions. Word has length 28 [2020-01-16 18:35:06,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:06,621 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7051 transitions. [2020-01-16 18:35:06,621 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:06,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7051 transitions. [2020-01-16 18:35:06,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:06,623 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:06,623 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:06,623 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 18:35:06,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:06,623 INFO L82 PathProgramCache]: Analyzing trace with hash -124080954, now seen corresponding path program 264 times [2020-01-16 18:35:06,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:06,624 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88968028] [2020-01-16 18:35:06,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:07,075 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:35:07,209 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:07,216 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 18:35:07,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88968028] [2020-01-16 18:35:07,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:07,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:07,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100639919] [2020-01-16 18:35:07,217 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:07,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:07,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:07,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:07,217 INFO L87 Difference]: Start difference. First operand 1575 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:35:07,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:07,426 INFO L93 Difference]: Finished difference Result 2934 states and 11676 transitions. [2020-01-16 18:35:07,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:07,427 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:07,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:07,434 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 18:35:07,434 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 18:35:07,434 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 18:35:07,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 18:35:07,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1560. [2020-01-16 18:35:07,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-01-16 18:35:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 7020 transitions. [2020-01-16 18:35:07,500 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 7020 transitions. Word has length 28 [2020-01-16 18:35:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:07,500 INFO L478 AbstractCegarLoop]: Abstraction has 1560 states and 7020 transitions. [2020-01-16 18:35:07,500 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:07,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 7020 transitions. [2020-01-16 18:35:07,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:07,502 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:07,502 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 18:35:07,502 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 18:35:07,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:07,502 INFO L82 PathProgramCache]: Analyzing trace with hash 155271406, now seen corresponding path program 265 times [2020-01-16 18:35:07,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:07,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415851159] [2020-01-16 18:35:07,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:08,117 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:35:08,124 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 18:35:08,124 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415851159] [2020-01-16 18:35:08,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:08,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:08,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554164101] [2020-01-16 18:35:08,124 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:08,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:08,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:08,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:08,125 INFO L87 Difference]: Start difference. First operand 1560 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:35:08,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:08,324 INFO L93 Difference]: Finished difference Result 2950 states and 11754 transitions. [2020-01-16 18:35:08,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:08,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:08,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:08,332 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:35:08,333 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:35:08,333 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 18:35:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:35:08,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1577. [2020-01-16 18:35:08,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:35:08,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7079 transitions. [2020-01-16 18:35:08,398 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7079 transitions. Word has length 28 [2020-01-16 18:35:08,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:08,399 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7079 transitions. [2020-01-16 18:35:08,399 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:08,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7079 transitions. [2020-01-16 18:35:08,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:08,401 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:08,401 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 18:35:08,401 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 18:35:08,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:08,401 INFO L82 PathProgramCache]: Analyzing trace with hash 899973904, now seen corresponding path program 266 times [2020-01-16 18:35:08,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:08,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707648940] [2020-01-16 18:35:08,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:08,996 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:09,003 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 18:35:09,003 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707648940] [2020-01-16 18:35:09,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:09,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:09,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582182736] [2020-01-16 18:35:09,004 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:09,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:09,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:09,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:09,004 INFO L87 Difference]: Start difference. First operand 1577 states and 7079 transitions. Second operand 11 states. [2020-01-16 18:35:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:09,251 INFO L93 Difference]: Finished difference Result 2951 states and 11751 transitions. [2020-01-16 18:35:09,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:09,252 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:09,259 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:35:09,259 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:35:09,259 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 18:35:09,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:35:09,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1572. [2020-01-16 18:35:09,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:35:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7065 transitions. [2020-01-16 18:35:09,325 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7065 transitions. Word has length 28 [2020-01-16 18:35:09,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:09,325 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7065 transitions. [2020-01-16 18:35:09,325 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7065 transitions. [2020-01-16 18:35:09,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:09,327 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:09,327 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:09,327 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 18:35:09,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:09,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1766212364, now seen corresponding path program 267 times [2020-01-16 18:35:09,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:09,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751148840] [2020-01-16 18:35:09,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:09,921 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:35:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:09,928 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751148840] [2020-01-16 18:35:09,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:09,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:09,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650046594] [2020-01-16 18:35:09,928 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:09,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:09,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:09,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:09,929 INFO L87 Difference]: Start difference. First operand 1572 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:35:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:10,162 INFO L93 Difference]: Finished difference Result 2955 states and 11758 transitions. [2020-01-16 18:35:10,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:10,162 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:10,169 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:35:10,169 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:35:10,169 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 18:35:10,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:35:10,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1578. [2020-01-16 18:35:10,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:35:10,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7076 transitions. [2020-01-16 18:35:10,238 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7076 transitions. Word has length 28 [2020-01-16 18:35:10,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:10,238 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7076 transitions. [2020-01-16 18:35:10,238 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7076 transitions. [2020-01-16 18:35:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:10,240 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:10,240 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:10,240 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 18:35:10,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:10,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1039349936, now seen corresponding path program 268 times [2020-01-16 18:35:10,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:10,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358455652] [2020-01-16 18:35:10,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:10,723 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 30 [2020-01-16 18:35:10,849 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:35:10,856 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 18:35:10,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358455652] [2020-01-16 18:35:10,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:10,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:10,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252683917] [2020-01-16 18:35:10,857 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:10,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:10,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:10,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:10,857 INFO L87 Difference]: Start difference. First operand 1578 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:35:11,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:11,028 INFO L93 Difference]: Finished difference Result 2960 states and 11762 transitions. [2020-01-16 18:35:11,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:11,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:11,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:11,035 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 18:35:11,035 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:35:11,035 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 18:35:11,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:35:11,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1572. [2020-01-16 18:35:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:35:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7059 transitions. [2020-01-16 18:35:11,101 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7059 transitions. Word has length 28 [2020-01-16 18:35:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:11,101 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7059 transitions. [2020-01-16 18:35:11,101 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7059 transitions. [2020-01-16 18:35:11,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:11,103 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:11,103 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 18:35:11,104 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 18:35:11,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:11,104 INFO L82 PathProgramCache]: Analyzing trace with hash -173111476, now seen corresponding path program 269 times [2020-01-16 18:35:11,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:11,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424901773] [2020-01-16 18:35:11,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:11,699 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:11,706 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 18:35:11,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424901773] [2020-01-16 18:35:11,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:11,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:11,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111463606] [2020-01-16 18:35:11,707 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:11,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:11,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:11,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:11,707 INFO L87 Difference]: Start difference. First operand 1572 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:35:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:11,918 INFO L93 Difference]: Finished difference Result 2958 states and 11759 transitions. [2020-01-16 18:35:11,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:11,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:11,925 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:35:11,925 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:35:11,925 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 18:35:11,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:35:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1579. [2020-01-16 18:35:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:35:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7072 transitions. [2020-01-16 18:35:11,991 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7072 transitions. Word has length 28 [2020-01-16 18:35:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:11,992 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7072 transitions. [2020-01-16 18:35:11,992 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:11,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7072 transitions. [2020-01-16 18:35:11,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:11,994 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:11,994 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:11,994 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 18:35:11,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:11,994 INFO L82 PathProgramCache]: Analyzing trace with hash 571591022, now seen corresponding path program 270 times [2020-01-16 18:35:11,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:11,994 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903460300] [2020-01-16 18:35:11,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:12,473 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 18:35:12,601 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:12,608 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 18:35:12,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903460300] [2020-01-16 18:35:12,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:12,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:12,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749285375] [2020-01-16 18:35:12,609 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:12,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:12,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:12,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:12,609 INFO L87 Difference]: Start difference. First operand 1579 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:35:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:12,804 INFO L93 Difference]: Finished difference Result 2962 states and 11760 transitions. [2020-01-16 18:35:12,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:12,805 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:12,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:12,812 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:35:12,812 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 18:35:12,812 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 18:35:12,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 18:35:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1566. [2020-01-16 18:35:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:35:12,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7042 transitions. [2020-01-16 18:35:12,880 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7042 transitions. Word has length 28 [2020-01-16 18:35:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:12,880 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7042 transitions. [2020-01-16 18:35:12,880 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:12,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7042 transitions. [2020-01-16 18:35:12,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:12,882 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:12,882 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 18:35:12,882 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 18:35:12,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:12,882 INFO L82 PathProgramCache]: Analyzing trace with hash -669941720, now seen corresponding path program 271 times [2020-01-16 18:35:12,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:12,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689856928] [2020-01-16 18:35:12,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:13,504 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:35:13,510 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 18:35:13,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689856928] [2020-01-16 18:35:13,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:13,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:13,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051253265] [2020-01-16 18:35:13,511 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:13,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:13,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:13,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:13,512 INFO L87 Difference]: Start difference. First operand 1566 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:35:13,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:13,743 INFO L93 Difference]: Finished difference Result 2944 states and 11736 transitions. [2020-01-16 18:35:13,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:13,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:13,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:13,752 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 18:35:13,752 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 18:35:13,752 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:35:13,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 18:35:13,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1576. [2020-01-16 18:35:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:35:13,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7070 transitions. [2020-01-16 18:35:13,819 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7070 transitions. Word has length 28 [2020-01-16 18:35:13,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:13,819 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7070 transitions. [2020-01-16 18:35:13,819 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:13,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7070 transitions. [2020-01-16 18:35:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:13,822 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:13,822 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:13,822 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 18:35:13,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:13,822 INFO L82 PathProgramCache]: Analyzing trace with hash 74760778, now seen corresponding path program 272 times [2020-01-16 18:35:13,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:13,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793639564] [2020-01-16 18:35:13,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:14,428 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:14,434 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 18:35:14,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793639564] [2020-01-16 18:35:14,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:14,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:14,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584282125] [2020-01-16 18:35:14,435 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:14,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:14,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:14,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:14,439 INFO L87 Difference]: Start difference. First operand 1576 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:35:14,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:14,643 INFO L93 Difference]: Finished difference Result 2945 states and 11733 transitions. [2020-01-16 18:35:14,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:14,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:14,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:14,651 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:35:14,651 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:35:14,651 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 18:35:14,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:35:14,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1571. [2020-01-16 18:35:14,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:35:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7056 transitions. [2020-01-16 18:35:14,742 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7056 transitions. Word has length 28 [2020-01-16 18:35:14,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:14,742 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7056 transitions. [2020-01-16 18:35:14,742 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:14,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7056 transitions. [2020-01-16 18:35:14,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:14,744 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:14,744 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 18:35:14,744 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 18:35:14,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:14,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2016710394, now seen corresponding path program 273 times [2020-01-16 18:35:14,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:14,745 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251488701] [2020-01-16 18:35:14,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:15,210 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:35:15,340 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:15,347 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 18:35:15,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251488701] [2020-01-16 18:35:15,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:15,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:15,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910437705] [2020-01-16 18:35:15,347 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:15,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:15,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:15,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:15,348 INFO L87 Difference]: Start difference. First operand 1571 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:35:15,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:15,577 INFO L93 Difference]: Finished difference Result 2945 states and 11733 transitions. [2020-01-16 18:35:15,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:15,578 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:15,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:15,586 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:35:15,586 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:35:15,586 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:35:15,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:35:15,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 18:35:15,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:35:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7065 transitions. [2020-01-16 18:35:15,660 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7065 transitions. Word has length 28 [2020-01-16 18:35:15,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:15,660 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7065 transitions. [2020-01-16 18:35:15,660 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:15,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7065 transitions. [2020-01-16 18:35:15,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:15,663 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:15,663 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 18:35:15,663 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 18:35:15,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:15,664 INFO L82 PathProgramCache]: Analyzing trace with hash -615604214, now seen corresponding path program 274 times [2020-01-16 18:35:15,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:15,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192455027] [2020-01-16 18:35:15,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:16,268 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:16,274 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 18:35:16,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192455027] [2020-01-16 18:35:16,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:16,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:16,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862709331] [2020-01-16 18:35:16,275 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:16,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:16,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:16,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:16,275 INFO L87 Difference]: Start difference. First operand 1576 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:35:16,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:16,489 INFO L93 Difference]: Finished difference Result 2947 states and 11732 transitions. [2020-01-16 18:35:16,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:16,490 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:16,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:16,497 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:35:16,497 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:35:16,497 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 18:35:16,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:35:16,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1571. [2020-01-16 18:35:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:35:16,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7051 transitions. [2020-01-16 18:35:16,562 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7051 transitions. Word has length 28 [2020-01-16 18:35:16,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:16,563 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7051 transitions. [2020-01-16 18:35:16,563 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:16,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7051 transitions. [2020-01-16 18:35:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:16,565 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:16,565 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 18:35:16,565 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 18:35:16,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:16,565 INFO L82 PathProgramCache]: Analyzing trace with hash 77386554, now seen corresponding path program 275 times [2020-01-16 18:35:16,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:16,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545654799] [2020-01-16 18:35:16,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:17,178 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:17,185 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545654799] [2020-01-16 18:35:17,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:17,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:17,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108038357] [2020-01-16 18:35:17,185 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:17,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:17,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:17,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:17,186 INFO L87 Difference]: Start difference. First operand 1571 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:35:17,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:17,423 INFO L93 Difference]: Finished difference Result 2948 states and 11735 transitions. [2020-01-16 18:35:17,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:17,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:17,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:17,431 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:35:17,431 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:35:17,431 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 18:35:17,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:35:17,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1577. [2020-01-16 18:35:17,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:35:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7062 transitions. [2020-01-16 18:35:17,497 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7062 transitions. Word has length 28 [2020-01-16 18:35:17,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:17,497 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7062 transitions. [2020-01-16 18:35:17,497 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:17,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7062 transitions. [2020-01-16 18:35:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:17,500 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:17,500 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 18:35:17,500 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 18:35:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:17,500 INFO L82 PathProgramCache]: Analyzing trace with hash 995336744, now seen corresponding path program 276 times [2020-01-16 18:35:17,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:17,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319476030] [2020-01-16 18:35:17,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:18,104 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:18,111 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 18:35:18,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319476030] [2020-01-16 18:35:18,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:18,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:18,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619706554] [2020-01-16 18:35:18,112 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:18,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:18,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:18,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:18,112 INFO L87 Difference]: Start difference. First operand 1577 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:35:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:18,379 INFO L93 Difference]: Finished difference Result 2949 states and 11731 transitions. [2020-01-16 18:35:18,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:18,379 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:18,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:18,387 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 18:35:18,387 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:35:18,387 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 18:35:18,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:35:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1566. [2020-01-16 18:35:18,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:35:18,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7037 transitions. [2020-01-16 18:35:18,455 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7037 transitions. Word has length 28 [2020-01-16 18:35:18,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:18,455 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7037 transitions. [2020-01-16 18:35:18,455 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:18,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7037 transitions. [2020-01-16 18:35:18,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:18,457 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:18,457 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:18,457 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 18:35:18,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:18,458 INFO L82 PathProgramCache]: Analyzing trace with hash -659438616, now seen corresponding path program 277 times [2020-01-16 18:35:18,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:18,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355716385] [2020-01-16 18:35:18,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:19,052 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:19,059 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355716385] [2020-01-16 18:35:19,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:19,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:19,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320199499] [2020-01-16 18:35:19,059 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:19,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:19,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:19,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:19,060 INFO L87 Difference]: Start difference. First operand 1566 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:35:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:19,276 INFO L93 Difference]: Finished difference Result 2957 states and 11757 transitions. [2020-01-16 18:35:19,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:19,276 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:19,283 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 18:35:19,283 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:35:19,283 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 18:35:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:35:19,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1578. [2020-01-16 18:35:19,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:35:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7070 transitions. [2020-01-16 18:35:19,351 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7070 transitions. Word has length 28 [2020-01-16 18:35:19,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:19,351 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7070 transitions. [2020-01-16 18:35:19,351 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:19,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7070 transitions. [2020-01-16 18:35:19,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:19,353 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:19,353 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:19,353 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 18:35:19,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:19,354 INFO L82 PathProgramCache]: Analyzing trace with hash 829966380, now seen corresponding path program 278 times [2020-01-16 18:35:19,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:19,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504010919] [2020-01-16 18:35:19,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:19,822 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:35:19,949 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:19,956 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504010919] [2020-01-16 18:35:19,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:19,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:19,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547643344] [2020-01-16 18:35:19,956 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:19,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:19,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:19,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:19,957 INFO L87 Difference]: Start difference. First operand 1578 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:35:20,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:20,182 INFO L93 Difference]: Finished difference Result 2962 states and 11761 transitions. [2020-01-16 18:35:20,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:20,183 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:20,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:20,189 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:35:20,189 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:35:20,190 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 18:35:20,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:35:20,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1572. [2020-01-16 18:35:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:35:20,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7053 transitions. [2020-01-16 18:35:20,285 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7053 transitions. Word has length 28 [2020-01-16 18:35:20,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:20,285 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7053 transitions. [2020-01-16 18:35:20,285 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:20,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7053 transitions. [2020-01-16 18:35:20,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:20,288 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:20,288 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 18:35:20,288 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 18:35:20,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:20,289 INFO L82 PathProgramCache]: Analyzing trace with hash 416272540, now seen corresponding path program 279 times [2020-01-16 18:35:20,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:20,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303612654] [2020-01-16 18:35:20,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:20,874 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:20,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:20,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303612654] [2020-01-16 18:35:20,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:20,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:20,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828534637] [2020-01-16 18:35:20,882 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:20,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:20,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:20,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:20,883 INFO L87 Difference]: Start difference. First operand 1572 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:35:21,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:21,095 INFO L93 Difference]: Finished difference Result 2953 states and 11744 transitions. [2020-01-16 18:35:21,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:21,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:21,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:21,103 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:35:21,103 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:35:21,104 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 18:35:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:35:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 18:35:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:35:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7062 transitions. [2020-01-16 18:35:21,171 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7062 transitions. Word has length 28 [2020-01-16 18:35:21,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:21,171 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7062 transitions. [2020-01-16 18:35:21,171 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7062 transitions. [2020-01-16 18:35:21,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:21,173 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:21,174 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 18:35:21,174 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 18:35:21,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:21,174 INFO L82 PathProgramCache]: Analyzing trace with hash 2078925228, now seen corresponding path program 280 times [2020-01-16 18:35:21,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:21,174 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605726926] [2020-01-16 18:35:21,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:21,762 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:21,768 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 18:35:21,769 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605726926] [2020-01-16 18:35:21,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:21,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:21,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077383839] [2020-01-16 18:35:21,769 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:21,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:21,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:21,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:21,770 INFO L87 Difference]: Start difference. First operand 1577 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:35:22,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:22,015 INFO L93 Difference]: Finished difference Result 2955 states and 11743 transitions. [2020-01-16 18:35:22,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:22,016 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:22,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:22,023 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:35:22,024 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:35:22,024 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 18:35:22,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:35:22,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1572. [2020-01-16 18:35:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:35:22,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7048 transitions. [2020-01-16 18:35:22,091 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7048 transitions. Word has length 28 [2020-01-16 18:35:22,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:22,091 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7048 transitions. [2020-01-16 18:35:22,091 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:22,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7048 transitions. [2020-01-16 18:35:22,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:22,093 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:22,093 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 18:35:22,094 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 18:35:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:22,094 INFO L82 PathProgramCache]: Analyzing trace with hash 832592156, now seen corresponding path program 281 times [2020-01-16 18:35:22,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:22,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182528258] [2020-01-16 18:35:22,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:22,566 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:35:22,694 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:22,701 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 18:35:22,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182528258] [2020-01-16 18:35:22,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:22,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:22,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175431125] [2020-01-16 18:35:22,701 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:22,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:22,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:22,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:22,702 INFO L87 Difference]: Start difference. First operand 1572 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:35:22,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:22,912 INFO L93 Difference]: Finished difference Result 2966 states and 11765 transitions. [2020-01-16 18:35:22,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:22,913 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:22,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:22,920 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:35:22,920 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:35:22,920 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 18:35:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:35:22,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1580. [2020-01-16 18:35:22,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:35:22,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7062 transitions. [2020-01-16 18:35:22,988 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7062 transitions. Word has length 28 [2020-01-16 18:35:22,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:22,988 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7062 transitions. [2020-01-16 18:35:22,988 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:22,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7062 transitions. [2020-01-16 18:35:22,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:22,990 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:22,990 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:22,990 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 18:35:22,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:22,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1005839848, now seen corresponding path program 282 times [2020-01-16 18:35:22,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:22,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363098966] [2020-01-16 18:35:22,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:23,579 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:23,585 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 18:35:23,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363098966] [2020-01-16 18:35:23,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:23,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:23,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030273017] [2020-01-16 18:35:23,586 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:23,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:23,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:23,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:23,587 INFO L87 Difference]: Start difference. First operand 1580 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:35:23,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:23,786 INFO L93 Difference]: Finished difference Result 2963 states and 11752 transitions. [2020-01-16 18:35:23,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:23,787 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:23,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:23,794 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:35:23,795 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:35:23,795 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 18:35:23,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:35:23,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1566. [2020-01-16 18:35:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:35:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7031 transitions. [2020-01-16 18:35:23,865 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7031 transitions. Word has length 28 [2020-01-16 18:35:23,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:23,865 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7031 transitions. [2020-01-16 18:35:23,865 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:23,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7031 transitions. [2020-01-16 18:35:23,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:23,867 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:23,867 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 18:35:23,867 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 18:35:23,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:23,868 INFO L82 PathProgramCache]: Analyzing trace with hash 95766986, now seen corresponding path program 283 times [2020-01-16 18:35:23,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:23,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423442626] [2020-01-16 18:35:23,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:24,459 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:24,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423442626] [2020-01-16 18:35:24,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:24,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:24,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332292716] [2020-01-16 18:35:24,467 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:24,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:24,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:24,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:24,467 INFO L87 Difference]: Start difference. First operand 1566 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:35:24,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:24,694 INFO L93 Difference]: Finished difference Result 2964 states and 11770 transitions. [2020-01-16 18:35:24,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:24,694 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:24,702 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:35:24,702 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:35:24,702 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 18:35:24,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:35:24,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1580. [2020-01-16 18:35:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:35:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7070 transitions. [2020-01-16 18:35:24,769 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7070 transitions. Word has length 28 [2020-01-16 18:35:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:24,769 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7070 transitions. [2020-01-16 18:35:24,769 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:24,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7070 transitions. [2020-01-16 18:35:24,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:24,771 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:24,772 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 18:35:24,772 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 18:35:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:24,772 INFO L82 PathProgramCache]: Analyzing trace with hash 840469484, now seen corresponding path program 284 times [2020-01-16 18:35:24,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:24,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705608584] [2020-01-16 18:35:24,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:25,243 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 18:35:25,370 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:25,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705608584] [2020-01-16 18:35:25,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:25,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:25,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285359499] [2020-01-16 18:35:25,377 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:25,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:25,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:25,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:25,377 INFO L87 Difference]: Start difference. First operand 1580 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:35:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:25,580 INFO L93 Difference]: Finished difference Result 2968 states and 11771 transitions. [2020-01-16 18:35:25,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:25,581 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:25,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:25,588 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:35:25,589 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:35:25,589 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 18:35:25,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:35:25,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1573. [2020-01-16 18:35:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:35:25,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7050 transitions. [2020-01-16 18:35:25,656 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7050 transitions. Word has length 28 [2020-01-16 18:35:25,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:25,657 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7050 transitions. [2020-01-16 18:35:25,657 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:25,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7050 transitions. [2020-01-16 18:35:25,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:25,659 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:25,659 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:25,659 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 18:35:25,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:25,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1171478142, now seen corresponding path program 285 times [2020-01-16 18:35:25,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:25,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197325200] [2020-01-16 18:35:25,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:26,291 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:26,299 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197325200] [2020-01-16 18:35:26,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:26,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:26,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181797261] [2020-01-16 18:35:26,299 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:26,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:26,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:26,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:26,299 INFO L87 Difference]: Start difference. First operand 1573 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:35:26,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:26,531 INFO L93 Difference]: Finished difference Result 2960 states and 11756 transitions. [2020-01-16 18:35:26,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:26,531 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:26,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:26,538 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 18:35:26,538 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:35:26,539 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 18:35:26,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:35:26,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1579. [2020-01-16 18:35:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:35:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7061 transitions. [2020-01-16 18:35:26,606 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7061 transitions. Word has length 28 [2020-01-16 18:35:26,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:26,606 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7061 transitions. [2020-01-16 18:35:26,606 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:26,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7061 transitions. [2020-01-16 18:35:26,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:26,608 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:26,609 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:26,609 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 18:35:26,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:26,609 INFO L82 PathProgramCache]: Analyzing trace with hash 2089428332, now seen corresponding path program 286 times [2020-01-16 18:35:26,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:26,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916437237] [2020-01-16 18:35:26,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:27,221 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:27,228 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 18:35:27,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916437237] [2020-01-16 18:35:27,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:27,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:27,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852429609] [2020-01-16 18:35:27,229 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:27,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:27,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:27,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:27,230 INFO L87 Difference]: Start difference. First operand 1579 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:35:27,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:27,479 INFO L93 Difference]: Finished difference Result 2961 states and 11752 transitions. [2020-01-16 18:35:27,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:27,479 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:27,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:27,487 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:35:27,487 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:35:27,487 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 18:35:27,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:35:27,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1573. [2020-01-16 18:35:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:35:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 18:35:27,557 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 18:35:27,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:27,557 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 18:35:27,557 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 18:35:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:27,560 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:27,561 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 18:35:27,561 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 18:35:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:27,561 INFO L82 PathProgramCache]: Analyzing trace with hash -767845698, now seen corresponding path program 287 times [2020-01-16 18:35:27,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:27,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348745618] [2020-01-16 18:35:27,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:28,041 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 18:35:28,167 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:28,174 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348745618] [2020-01-16 18:35:28,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:28,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:28,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113785540] [2020-01-16 18:35:28,175 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:28,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:28,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:28,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:28,175 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:35:28,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:28,334 INFO L93 Difference]: Finished difference Result 2970 states and 11769 transitions. [2020-01-16 18:35:28,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:28,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:28,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:28,341 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:35:28,341 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:35:28,342 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 18:35:28,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:35:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1581. [2020-01-16 18:35:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:35:28,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7058 transitions. [2020-01-16 18:35:28,409 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7058 transitions. Word has length 28 [2020-01-16 18:35:28,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:28,409 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7058 transitions. [2020-01-16 18:35:28,409 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7058 transitions. [2020-01-16 18:35:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:28,412 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:28,412 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 18:35:28,412 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 18:35:28,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:28,412 INFO L82 PathProgramCache]: Analyzing trace with hash -594598006, now seen corresponding path program 288 times [2020-01-16 18:35:28,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:28,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256605158] [2020-01-16 18:35:28,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:29,020 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:29,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256605158] [2020-01-16 18:35:29,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:29,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:29,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967004649] [2020-01-16 18:35:29,027 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:29,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:29,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:29,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:29,028 INFO L87 Difference]: Start difference. First operand 1581 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:35:29,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:29,230 INFO L93 Difference]: Finished difference Result 2967 states and 11756 transitions. [2020-01-16 18:35:29,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:29,230 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:29,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:29,238 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:35:29,238 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 18:35:29,238 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 18:35:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 18:35:29,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1560. [2020-01-16 18:35:29,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-01-16 18:35:29,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 7015 transitions. [2020-01-16 18:35:29,303 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 7015 transitions. Word has length 28 [2020-01-16 18:35:29,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:29,303 INFO L478 AbstractCegarLoop]: Abstraction has 1560 states and 7015 transitions. [2020-01-16 18:35:29,303 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:29,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 7015 transitions. [2020-01-16 18:35:29,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:29,305 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:29,305 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 18:35:29,306 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 18:35:29,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:29,306 INFO L82 PathProgramCache]: Analyzing trace with hash 405091818, now seen corresponding path program 289 times [2020-01-16 18:35:29,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:29,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948781092] [2020-01-16 18:35:29,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:29,911 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:35:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:29,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948781092] [2020-01-16 18:35:29,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:29,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:29,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536886406] [2020-01-16 18:35:29,919 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:29,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:29,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:29,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:29,919 INFO L87 Difference]: Start difference. First operand 1560 states and 7015 transitions. Second operand 11 states. [2020-01-16 18:35:30,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:30,155 INFO L93 Difference]: Finished difference Result 2913 states and 11649 transitions. [2020-01-16 18:35:30,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:30,156 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:30,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:30,164 INFO L225 Difference]: With dead ends: 2913 [2020-01-16 18:35:30,164 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 18:35:30,164 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 18:35:30,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 18:35:30,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1573. [2020-01-16 18:35:30,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:35:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7058 transitions. [2020-01-16 18:35:30,231 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7058 transitions. Word has length 28 [2020-01-16 18:35:30,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:30,231 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7058 transitions. [2020-01-16 18:35:30,231 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:30,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7058 transitions. [2020-01-16 18:35:30,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:30,233 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:30,233 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:30,234 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 18:35:30,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:30,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1149794316, now seen corresponding path program 290 times [2020-01-16 18:35:30,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:30,234 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857782955] [2020-01-16 18:35:30,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:30,720 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-01-16 18:35:30,849 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:30,856 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 18:35:30,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857782955] [2020-01-16 18:35:30,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:30,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:30,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203565473] [2020-01-16 18:35:30,857 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:30,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:30,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:30,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:30,858 INFO L87 Difference]: Start difference. First operand 1573 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:35:31,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:31,092 INFO L93 Difference]: Finished difference Result 2914 states and 11646 transitions. [2020-01-16 18:35:31,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:31,093 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:31,100 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 18:35:31,100 INFO L226 Difference]: Without dead ends: 2893 [2020-01-16 18:35:31,101 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 18:35:31,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-01-16 18:35:31,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1568. [2020-01-16 18:35:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:35:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7045 transitions. [2020-01-16 18:35:31,166 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7045 transitions. Word has length 28 [2020-01-16 18:35:31,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:31,166 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7045 transitions. [2020-01-16 18:35:31,166 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:31,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7045 transitions. [2020-01-16 18:35:31,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:31,168 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:31,168 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:31,169 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 18:35:31,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:31,169 INFO L82 PathProgramCache]: Analyzing trace with hash -130137984, now seen corresponding path program 291 times [2020-01-16 18:35:31,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:31,169 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242027379] [2020-01-16 18:35:31,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:31,796 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:35:31,803 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 18:35:31,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242027379] [2020-01-16 18:35:31,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:31,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:31,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994768677] [2020-01-16 18:35:31,803 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:31,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:31,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:31,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:31,804 INFO L87 Difference]: Start difference. First operand 1568 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:35:32,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:32,050 INFO L93 Difference]: Finished difference Result 2910 states and 11638 transitions. [2020-01-16 18:35:32,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:32,050 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:32,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:32,058 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:35:32,058 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 18:35:32,058 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 18:35:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 18:35:32,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1572. [2020-01-16 18:35:32,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:35:32,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7052 transitions. [2020-01-16 18:35:32,123 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7052 transitions. Word has length 28 [2020-01-16 18:35:32,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:32,124 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7052 transitions. [2020-01-16 18:35:32,124 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:32,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7052 transitions. [2020-01-16 18:35:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:32,126 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:32,126 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 18:35:32,126 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 18:35:32,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:32,126 INFO L82 PathProgramCache]: Analyzing trace with hash 43109708, now seen corresponding path program 292 times [2020-01-16 18:35:32,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:32,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012776445] [2020-01-16 18:35:32,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:32,714 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:32,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012776445] [2020-01-16 18:35:32,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:32,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:32,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293928923] [2020-01-16 18:35:32,722 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:32,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:32,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:32,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:32,722 INFO L87 Difference]: Start difference. First operand 1572 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:35:32,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:32,954 INFO L93 Difference]: Finished difference Result 2909 states and 11632 transitions. [2020-01-16 18:35:32,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:32,954 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:32,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:32,962 INFO L225 Difference]: With dead ends: 2909 [2020-01-16 18:35:32,962 INFO L226 Difference]: Without dead ends: 2891 [2020-01-16 18:35:32,962 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 18:35:33,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2020-01-16 18:35:33,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1568. [2020-01-16 18:35:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:35:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7041 transitions. [2020-01-16 18:35:33,035 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7041 transitions. Word has length 28 [2020-01-16 18:35:33,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:33,035 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7041 transitions. [2020-01-16 18:35:33,035 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:33,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7041 transitions. [2020-01-16 18:35:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:33,037 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:33,037 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 18:35:33,037 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 18:35:33,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:33,037 INFO L82 PathProgramCache]: Analyzing trace with hash -2069461824, now seen corresponding path program 293 times [2020-01-16 18:35:33,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:33,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219166598] [2020-01-16 18:35:33,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:33,630 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:33,637 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 18:35:33,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219166598] [2020-01-16 18:35:33,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:33,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:33,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497916168] [2020-01-16 18:35:33,638 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:33,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:33,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:33,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:33,638 INFO L87 Difference]: Start difference. First operand 1568 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:35:33,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:33,924 INFO L93 Difference]: Finished difference Result 2912 states and 11638 transitions. [2020-01-16 18:35:33,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:33,925 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:33,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:33,932 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:35:33,932 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 18:35:33,932 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 18:35:33,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 18:35:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1572. [2020-01-16 18:35:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:35:33,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7048 transitions. [2020-01-16 18:35:33,998 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7048 transitions. Word has length 28 [2020-01-16 18:35:33,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:33,998 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7048 transitions. [2020-01-16 18:35:33,998 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:33,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7048 transitions. [2020-01-16 18:35:34,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:34,000 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:34,000 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 18:35:34,001 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 18:35:34,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:34,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1654050666, now seen corresponding path program 294 times [2020-01-16 18:35:34,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:34,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151382997] [2020-01-16 18:35:34,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:34,593 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:34,600 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 18:35:34,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151382997] [2020-01-16 18:35:34,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:34,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:34,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633733096] [2020-01-16 18:35:34,601 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:34,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:34,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:34,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:34,601 INFO L87 Difference]: Start difference. First operand 1572 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:35:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:34,855 INFO L93 Difference]: Finished difference Result 2910 states and 11630 transitions. [2020-01-16 18:35:34,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:34,855 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:34,863 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:35:34,863 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 18:35:34,863 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 18:35:34,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 18:35:34,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1564. [2020-01-16 18:35:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:35:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7030 transitions. [2020-01-16 18:35:34,928 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7030 transitions. Word has length 28 [2020-01-16 18:35:34,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:34,928 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7030 transitions. [2020-01-16 18:35:34,928 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7030 transitions. [2020-01-16 18:35:34,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:34,931 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:34,931 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 18:35:34,931 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 18:35:34,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:34,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1499183406, now seen corresponding path program 295 times [2020-01-16 18:35:34,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:34,931 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123369751] [2020-01-16 18:35:34,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:35,529 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:35:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:35,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123369751] [2020-01-16 18:35:35,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:35,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:35,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927227257] [2020-01-16 18:35:35,537 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:35,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:35,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:35,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:35,537 INFO L87 Difference]: Start difference. First operand 1564 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:35:35,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:35,752 INFO L93 Difference]: Finished difference Result 2920 states and 11664 transitions. [2020-01-16 18:35:35,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:35,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:35,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:35,759 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 18:35:35,759 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 18:35:35,759 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 18:35:35,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 18:35:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1574. [2020-01-16 18:35:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:35:35,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7058 transitions. [2020-01-16 18:35:35,827 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7058 transitions. Word has length 28 [2020-01-16 18:35:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:35,827 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7058 transitions. [2020-01-16 18:35:35,827 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:35,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7058 transitions. [2020-01-16 18:35:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:35,829 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:35,829 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 18:35:35,829 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 18:35:35,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:35,830 INFO L82 PathProgramCache]: Analyzing trace with hash -2051081392, now seen corresponding path program 296 times [2020-01-16 18:35:35,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:35,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422207685] [2020-01-16 18:35:35,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:36,431 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:36,438 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422207685] [2020-01-16 18:35:36,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:36,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:36,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771911359] [2020-01-16 18:35:36,439 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:36,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:36,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:36,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:36,439 INFO L87 Difference]: Start difference. First operand 1574 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:35:36,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:36,655 INFO L93 Difference]: Finished difference Result 2921 states and 11661 transitions. [2020-01-16 18:35:36,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:36,656 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:36,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:36,663 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:35:36,663 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:35:36,663 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 18:35:36,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:35:36,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1569. [2020-01-16 18:35:36,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:35:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7044 transitions. [2020-01-16 18:35:36,729 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7044 transitions. Word has length 28 [2020-01-16 18:35:36,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:36,729 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7044 transitions. [2020-01-16 18:35:36,729 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:36,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7044 transitions. [2020-01-16 18:35:36,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:36,731 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:36,731 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 18:35:36,731 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 18:35:36,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:36,731 INFO L82 PathProgramCache]: Analyzing trace with hash -109131776, now seen corresponding path program 297 times [2020-01-16 18:35:36,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:36,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653265829] [2020-01-16 18:35:36,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:37,347 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:37,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653265829] [2020-01-16 18:35:37,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:37,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:37,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841086540] [2020-01-16 18:35:37,354 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:37,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:37,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:37,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:37,355 INFO L87 Difference]: Start difference. First operand 1569 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:35:37,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:37,642 INFO L93 Difference]: Finished difference Result 2921 states and 11661 transitions. [2020-01-16 18:35:37,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:37,643 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:37,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:37,650 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:35:37,650 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:35:37,650 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 18:35:37,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:35:37,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1574. [2020-01-16 18:35:37,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:35:37,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7053 transitions. [2020-01-16 18:35:37,717 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7053 transitions. Word has length 28 [2020-01-16 18:35:37,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:37,718 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7053 transitions. [2020-01-16 18:35:37,718 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:37,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7053 transitions. [2020-01-16 18:35:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:37,720 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:37,720 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:37,720 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 18:35:37,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:37,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1553520912, now seen corresponding path program 298 times [2020-01-16 18:35:37,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:37,721 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314382383] [2020-01-16 18:35:37,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:38,310 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:38,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314382383] [2020-01-16 18:35:38,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:38,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:38,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480663380] [2020-01-16 18:35:38,317 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:38,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:38,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:38,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:38,317 INFO L87 Difference]: Start difference. First operand 1574 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:35:38,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:38,603 INFO L93 Difference]: Finished difference Result 2923 states and 11660 transitions. [2020-01-16 18:35:38,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:38,603 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:38,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:38,610 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:35:38,611 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 18:35:38,611 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 18:35:38,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 18:35:38,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1569. [2020-01-16 18:35:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:35:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7039 transitions. [2020-01-16 18:35:38,675 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7039 transitions. Word has length 28 [2020-01-16 18:35:38,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:38,675 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7039 transitions. [2020-01-16 18:35:38,675 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:38,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7039 transitions. [2020-01-16 18:35:38,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:38,677 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:38,678 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:38,678 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 18:35:38,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:38,678 INFO L82 PathProgramCache]: Analyzing trace with hash -2048455616, now seen corresponding path program 299 times [2020-01-16 18:35:38,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:38,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739981379] [2020-01-16 18:35:38,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:39,266 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:39,273 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 18:35:39,273 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739981379] [2020-01-16 18:35:39,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:39,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:39,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423563262] [2020-01-16 18:35:39,274 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:39,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:39,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:39,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:39,274 INFO L87 Difference]: Start difference. First operand 1569 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:35:39,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:39,563 INFO L93 Difference]: Finished difference Result 2924 states and 11663 transitions. [2020-01-16 18:35:39,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:39,564 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:39,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:39,571 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:35:39,572 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:35:39,572 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 18:35:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:35:39,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1575. [2020-01-16 18:35:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:35:39,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7050 transitions. [2020-01-16 18:35:39,639 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7050 transitions. Word has length 28 [2020-01-16 18:35:39,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:39,639 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7050 transitions. [2020-01-16 18:35:39,639 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:39,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7050 transitions. [2020-01-16 18:35:39,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:39,642 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:39,642 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 18:35:39,642 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 18:35:39,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:39,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1130505426, now seen corresponding path program 300 times [2020-01-16 18:35:39,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:39,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819102081] [2020-01-16 18:35:39,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:40,242 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:35:40,249 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 18:35:40,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819102081] [2020-01-16 18:35:40,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:40,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:40,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743509014] [2020-01-16 18:35:40,250 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:40,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:40,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:40,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:40,250 INFO L87 Difference]: Start difference. First operand 1575 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:35:40,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:40,544 INFO L93 Difference]: Finished difference Result 2925 states and 11659 transitions. [2020-01-16 18:35:40,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:40,544 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:40,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:40,552 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 18:35:40,552 INFO L226 Difference]: Without dead ends: 2897 [2020-01-16 18:35:40,552 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 18:35:40,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-01-16 18:35:40,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1564. [2020-01-16 18:35:40,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:35:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7026 transitions. [2020-01-16 18:35:40,619 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7026 transitions. Word has length 28 [2020-01-16 18:35:40,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:40,619 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7026 transitions. [2020-01-16 18:35:40,619 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7026 transitions. [2020-01-16 18:35:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:40,621 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:40,621 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 18:35:40,621 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 18:35:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:40,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1551698926, now seen corresponding path program 301 times [2020-01-16 18:35:40,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:40,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270739199] [2020-01-16 18:35:40,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:41,097 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:35:41,225 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:41,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270739199] [2020-01-16 18:35:41,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:41,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:41,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40437187] [2020-01-16 18:35:41,233 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:41,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:41,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:41,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:41,233 INFO L87 Difference]: Start difference. First operand 1564 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:35:41,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:41,464 INFO L93 Difference]: Finished difference Result 2911 states and 11636 transitions. [2020-01-16 18:35:41,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:41,464 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:41,471 INFO L225 Difference]: With dead ends: 2911 [2020-01-16 18:35:41,471 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 18:35:41,471 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 18:35:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 18:35:41,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1572. [2020-01-16 18:35:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:35:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7048 transitions. [2020-01-16 18:35:41,537 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7048 transitions. Word has length 28 [2020-01-16 18:35:41,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:41,537 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7048 transitions. [2020-01-16 18:35:41,537 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:41,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7048 transitions. [2020-01-16 18:35:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:41,539 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:41,539 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:41,539 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 18:35:41,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:41,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1724946618, now seen corresponding path program 302 times [2020-01-16 18:35:41,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:41,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590007656] [2020-01-16 18:35:41,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:42,141 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:42,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590007656] [2020-01-16 18:35:42,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:42,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:42,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327386091] [2020-01-16 18:35:42,149 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:42,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:42,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:42,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:42,150 INFO L87 Difference]: Start difference. First operand 1572 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:35:42,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:42,383 INFO L93 Difference]: Finished difference Result 2910 states and 11630 transitions. [2020-01-16 18:35:42,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:42,383 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:42,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:42,391 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:35:42,391 INFO L226 Difference]: Without dead ends: 2892 [2020-01-16 18:35:42,391 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 18:35:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-01-16 18:35:42,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 1568. [2020-01-16 18:35:42,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:35:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7037 transitions. [2020-01-16 18:35:42,459 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7037 transitions. Word has length 28 [2020-01-16 18:35:42,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:42,459 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7037 transitions. [2020-01-16 18:35:42,459 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:42,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7037 transitions. [2020-01-16 18:35:42,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:42,461 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:42,461 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:42,461 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 18:35:42,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:42,462 INFO L82 PathProgramCache]: Analyzing trace with hash 478613546, now seen corresponding path program 303 times [2020-01-16 18:35:42,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:42,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46129777] [2020-01-16 18:35:42,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:42,837 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-01-16 18:35:43,082 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:43,089 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 18:35:43,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46129777] [2020-01-16 18:35:43,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:43,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:43,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866407113] [2020-01-16 18:35:43,090 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:43,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:43,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:43,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:43,090 INFO L87 Difference]: Start difference. First operand 1568 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:35:43,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:43,310 INFO L93 Difference]: Finished difference Result 2915 states and 11641 transitions. [2020-01-16 18:35:43,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:43,311 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:43,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:43,318 INFO L225 Difference]: With dead ends: 2915 [2020-01-16 18:35:43,318 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:35:43,318 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 18:35:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:35:43,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1573. [2020-01-16 18:35:43,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:35:43,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7046 transitions. [2020-01-16 18:35:43,384 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7046 transitions. Word has length 28 [2020-01-16 18:35:43,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:43,384 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7046 transitions. [2020-01-16 18:35:43,384 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:43,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7046 transitions. [2020-01-16 18:35:43,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:43,387 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:43,387 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 18:35:43,387 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 18:35:43,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:43,387 INFO L82 PathProgramCache]: Analyzing trace with hash 2141266234, now seen corresponding path program 304 times [2020-01-16 18:35:43,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:43,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178699105] [2020-01-16 18:35:43,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:43,979 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:43,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178699105] [2020-01-16 18:35:43,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:43,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:43,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853119936] [2020-01-16 18:35:43,987 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:43,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:43,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:43,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:43,987 INFO L87 Difference]: Start difference. First operand 1573 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:35:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:44,176 INFO L93 Difference]: Finished difference Result 2917 states and 11640 transitions. [2020-01-16 18:35:44,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:44,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:44,184 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 18:35:44,184 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 18:35:44,184 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 18:35:44,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 18:35:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1568. [2020-01-16 18:35:44,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:35:44,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7033 transitions. [2020-01-16 18:35:44,251 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7033 transitions. Word has length 28 [2020-01-16 18:35:44,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:44,251 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7033 transitions. [2020-01-16 18:35:44,251 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:44,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7033 transitions. [2020-01-16 18:35:44,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:44,253 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:44,254 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 18:35:44,254 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 18:35:44,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:44,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1727572394, now seen corresponding path program 305 times [2020-01-16 18:35:44,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:44,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577350197] [2020-01-16 18:35:44,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:44,845 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:44,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577350197] [2020-01-16 18:35:44,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:44,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:44,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048694128] [2020-01-16 18:35:44,852 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:44,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:44,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:44,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:44,853 INFO L87 Difference]: Start difference. First operand 1568 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:35:45,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:45,037 INFO L93 Difference]: Finished difference Result 2912 states and 11630 transitions. [2020-01-16 18:35:45,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:45,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:45,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:45,044 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:35:45,045 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 18:35:45,045 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 18:35:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 18:35:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1572. [2020-01-16 18:35:45,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:35:45,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7040 transitions. [2020-01-16 18:35:45,112 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7040 transitions. Word has length 28 [2020-01-16 18:35:45,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:45,112 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7040 transitions. [2020-01-16 18:35:45,112 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:45,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7040 transitions. [2020-01-16 18:35:45,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:45,114 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:45,114 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 18:35:45,114 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 18:35:45,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:45,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1077989906, now seen corresponding path program 306 times [2020-01-16 18:35:45,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:45,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759135876] [2020-01-16 18:35:45,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:45,704 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:45,711 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 18:35:45,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759135876] [2020-01-16 18:35:45,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:45,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:45,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163441264] [2020-01-16 18:35:45,712 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:45,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:45,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:45,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:45,712 INFO L87 Difference]: Start difference. First operand 1572 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:35:45,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:45,930 INFO L93 Difference]: Finished difference Result 2915 states and 11632 transitions. [2020-01-16 18:35:45,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:45,931 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:45,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:45,938 INFO L225 Difference]: With dead ends: 2915 [2020-01-16 18:35:45,938 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:35:45,938 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 18:35:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:35:46,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1564. [2020-01-16 18:35:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:35:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7022 transitions. [2020-01-16 18:35:46,006 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7022 transitions. Word has length 28 [2020-01-16 18:35:46,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:46,006 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7022 transitions. [2020-01-16 18:35:46,006 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7022 transitions. [2020-01-16 18:35:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:46,008 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:46,008 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 18:35:46,008 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 18:35:46,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:46,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1988062768, now seen corresponding path program 307 times [2020-01-16 18:35:46,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:46,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251764439] [2020-01-16 18:35:46,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:46,605 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:46,612 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 18:35:46,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251764439] [2020-01-16 18:35:46,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:46,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:46,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768117964] [2020-01-16 18:35:46,613 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:46,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:46,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:46,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:46,613 INFO L87 Difference]: Start difference. First operand 1564 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:35:46,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:46,802 INFO L93 Difference]: Finished difference Result 2915 states and 11641 transitions. [2020-01-16 18:35:46,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:46,802 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:46,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:46,809 INFO L225 Difference]: With dead ends: 2915 [2020-01-16 18:35:46,809 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 18:35:46,809 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 18:35:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 18:35:46,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1572. [2020-01-16 18:35:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:35:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7044 transitions. [2020-01-16 18:35:46,876 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7044 transitions. Word has length 28 [2020-01-16 18:35:46,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:46,877 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7044 transitions. [2020-01-16 18:35:46,877 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7044 transitions. [2020-01-16 18:35:46,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:46,879 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:46,879 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 18:35:46,879 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 18:35:46,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:46,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1735449722, now seen corresponding path program 308 times [2020-01-16 18:35:46,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:46,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755993023] [2020-01-16 18:35:46,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:47,466 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:47,472 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 18:35:47,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755993023] [2020-01-16 18:35:47,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:47,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:47,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066452955] [2020-01-16 18:35:47,473 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:47,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:47,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:47,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:47,474 INFO L87 Difference]: Start difference. First operand 1572 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:35:47,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:47,690 INFO L93 Difference]: Finished difference Result 2913 states and 11633 transitions. [2020-01-16 18:35:47,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:47,691 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:47,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:47,698 INFO L225 Difference]: With dead ends: 2913 [2020-01-16 18:35:47,698 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 18:35:47,699 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 18:35:47,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 18:35:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1568. [2020-01-16 18:35:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:35:47,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7033 transitions. [2020-01-16 18:35:47,765 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7033 transitions. Word has length 28 [2020-01-16 18:35:47,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:47,766 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7033 transitions. [2020-01-16 18:35:47,766 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:47,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7033 transitions. [2020-01-16 18:35:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:47,768 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:47,768 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 18:35:47,768 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 18:35:47,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:47,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1233819148, now seen corresponding path program 309 times [2020-01-16 18:35:47,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:47,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740251691] [2020-01-16 18:35:47,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:48,375 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:48,382 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 18:35:48,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740251691] [2020-01-16 18:35:48,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:48,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:48,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453010314] [2020-01-16 18:35:48,383 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:48,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:48,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:48,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:48,384 INFO L87 Difference]: Start difference. First operand 1568 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:35:48,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:48,584 INFO L93 Difference]: Finished difference Result 2920 states and 11649 transitions. [2020-01-16 18:35:48,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:48,584 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:48,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:48,591 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 18:35:48,591 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 18:35:48,591 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 18:35:48,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 18:35:48,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1574. [2020-01-16 18:35:48,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:35:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7044 transitions. [2020-01-16 18:35:48,659 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7044 transitions. Word has length 28 [2020-01-16 18:35:48,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:48,659 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7044 transitions. [2020-01-16 18:35:48,659 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:48,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7044 transitions. [2020-01-16 18:35:48,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:48,661 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:48,661 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:48,661 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 18:35:48,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:48,662 INFO L82 PathProgramCache]: Analyzing trace with hash -2143197958, now seen corresponding path program 310 times [2020-01-16 18:35:48,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:48,662 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091203374] [2020-01-16 18:35:48,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:49,142 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:35:49,271 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:49,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091203374] [2020-01-16 18:35:49,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:49,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:49,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360817759] [2020-01-16 18:35:49,278 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:49,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:49,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:49,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:49,279 INFO L87 Difference]: Start difference. First operand 1574 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:35:49,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:49,513 INFO L93 Difference]: Finished difference Result 2921 states and 11645 transitions. [2020-01-16 18:35:49,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:49,514 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:49,521 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:35:49,521 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 18:35:49,521 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:35:49,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 18:35:49,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1568. [2020-01-16 18:35:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:35:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7029 transitions. [2020-01-16 18:35:49,586 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7029 transitions. Word has length 28 [2020-01-16 18:35:49,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:49,586 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7029 transitions. [2020-01-16 18:35:49,586 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:49,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7029 transitions. [2020-01-16 18:35:49,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:49,589 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:49,589 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 18:35:49,589 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 18:35:49,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:49,589 INFO L82 PathProgramCache]: Analyzing trace with hash 127134540, now seen corresponding path program 311 times [2020-01-16 18:35:49,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:49,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529781095] [2020-01-16 18:35:49,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:50,196 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:50,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529781095] [2020-01-16 18:35:50,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:50,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:50,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294694549] [2020-01-16 18:35:50,203 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:50,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:50,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:50,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:50,204 INFO L87 Difference]: Start difference. First operand 1568 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:35:50,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:50,393 INFO L93 Difference]: Finished difference Result 2914 states and 11631 transitions. [2020-01-16 18:35:50,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:50,394 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:50,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:50,401 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 18:35:50,401 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:35:50,401 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 18:35:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:35:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1572. [2020-01-16 18:35:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:35:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7036 transitions. [2020-01-16 18:35:50,468 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7036 transitions. Word has length 28 [2020-01-16 18:35:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:50,468 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7036 transitions. [2020-01-16 18:35:50,468 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7036 transitions. [2020-01-16 18:35:50,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:50,471 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:50,471 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:50,471 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 18:35:50,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:50,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1616539536, now seen corresponding path program 312 times [2020-01-16 18:35:50,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:50,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408814092] [2020-01-16 18:35:50,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:51,071 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:51,076 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 18:35:51,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408814092] [2020-01-16 18:35:51,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:51,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:51,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656576608] [2020-01-16 18:35:51,077 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:51,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:51,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:51,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:51,077 INFO L87 Difference]: Start difference. First operand 1572 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:35:51,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:51,268 INFO L93 Difference]: Finished difference Result 2917 states and 11633 transitions. [2020-01-16 18:35:51,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:51,268 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:51,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:51,276 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 18:35:51,276 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 18:35:51,276 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 18:35:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 18:35:51,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1560. [2020-01-16 18:35:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-01-16 18:35:51,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 7011 transitions. [2020-01-16 18:35:51,343 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 7011 transitions. Word has length 28 [2020-01-16 18:35:51,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:51,344 INFO L478 AbstractCegarLoop]: Abstraction has 1560 states and 7011 transitions. [2020-01-16 18:35:51,344 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:51,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 7011 transitions. [2020-01-16 18:35:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:51,346 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:51,346 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 18:35:51,346 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 18:35:51,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:51,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1953338296, now seen corresponding path program 313 times [2020-01-16 18:35:51,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:51,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811396876] [2020-01-16 18:35:51,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:51,811 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:35:51,938 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:51,945 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 18:35:51,945 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811396876] [2020-01-16 18:35:51,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:51,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:51,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126191978] [2020-01-16 18:35:51,946 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:51,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:51,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:51,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:51,946 INFO L87 Difference]: Start difference. First operand 1560 states and 7011 transitions. Second operand 11 states. [2020-01-16 18:35:52,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:52,133 INFO L93 Difference]: Finished difference Result 2937 states and 11697 transitions. [2020-01-16 18:35:52,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:52,133 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:52,141 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:35:52,141 INFO L226 Difference]: Without dead ends: 2922 [2020-01-16 18:35:52,141 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 18:35:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-01-16 18:35:52,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1576. [2020-01-16 18:35:52,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:35:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7063 transitions. [2020-01-16 18:35:52,209 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7063 transitions. Word has length 28 [2020-01-16 18:35:52,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:52,209 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7063 transitions. [2020-01-16 18:35:52,209 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:52,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7063 transitions. [2020-01-16 18:35:52,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:52,211 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:52,211 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:52,211 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 18:35:52,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:52,212 INFO L82 PathProgramCache]: Analyzing trace with hash -463933300, now seen corresponding path program 314 times [2020-01-16 18:35:52,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:52,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274580800] [2020-01-16 18:35:52,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:52,683 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:35:52,811 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:52,818 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 18:35:52,818 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274580800] [2020-01-16 18:35:52,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:52,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:52,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082037541] [2020-01-16 18:35:52,819 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:52,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:52,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:52,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:52,819 INFO L87 Difference]: Start difference. First operand 1576 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:35:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:52,983 INFO L93 Difference]: Finished difference Result 2942 states and 11701 transitions. [2020-01-16 18:35:52,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:52,983 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:52,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:52,990 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 18:35:52,990 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:35:52,990 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 18:35:53,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:35:53,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1570. [2020-01-16 18:35:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:35:53,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7047 transitions. [2020-01-16 18:35:53,056 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7047 transitions. Word has length 28 [2020-01-16 18:35:53,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:53,056 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7047 transitions. [2020-01-16 18:35:53,056 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7047 transitions. [2020-01-16 18:35:53,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:53,059 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:53,059 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:53,059 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 18:35:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:53,059 INFO L82 PathProgramCache]: Analyzing trace with hash 195458240, now seen corresponding path program 315 times [2020-01-16 18:35:53,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:53,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125735684] [2020-01-16 18:35:53,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:53,529 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:35:53,658 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:53,665 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 18:35:53,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125735684] [2020-01-16 18:35:53,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:53,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:53,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63073042] [2020-01-16 18:35:53,665 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:53,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:53,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:53,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:53,666 INFO L87 Difference]: Start difference. First operand 1570 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:35:53,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:53,874 INFO L93 Difference]: Finished difference Result 2929 states and 11676 transitions. [2020-01-16 18:35:53,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:53,874 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:53,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:53,881 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:35:53,881 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 18:35:53,881 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 18:35:53,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 18:35:53,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1574. [2020-01-16 18:35:53,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:35:53,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7054 transitions. [2020-01-16 18:35:53,974 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7054 transitions. Word has length 28 [2020-01-16 18:35:53,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:53,975 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7054 transitions. [2020-01-16 18:35:53,975 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7054 transitions. [2020-01-16 18:35:53,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:53,977 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:53,977 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 18:35:53,977 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 18:35:53,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:53,978 INFO L82 PathProgramCache]: Analyzing trace with hash 368705932, now seen corresponding path program 316 times [2020-01-16 18:35:53,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:53,978 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318885675] [2020-01-16 18:35:53,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:54,567 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:54,573 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 18:35:54,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318885675] [2020-01-16 18:35:54,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:54,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:54,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502518880] [2020-01-16 18:35:54,574 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:54,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:54,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:54,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:54,574 INFO L87 Difference]: Start difference. First operand 1574 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:35:54,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:54,768 INFO L93 Difference]: Finished difference Result 2928 states and 11670 transitions. [2020-01-16 18:35:54,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:54,769 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:54,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:54,776 INFO L225 Difference]: With dead ends: 2928 [2020-01-16 18:35:54,776 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 18:35:54,776 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:35:54,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 18:35:54,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1570. [2020-01-16 18:35:54,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:35:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7043 transitions. [2020-01-16 18:35:54,842 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7043 transitions. Word has length 28 [2020-01-16 18:35:54,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:54,842 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7043 transitions. [2020-01-16 18:35:54,842 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7043 transitions. [2020-01-16 18:35:54,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:54,844 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:54,844 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 18:35:54,844 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 18:35:54,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:54,845 INFO L82 PathProgramCache]: Analyzing trace with hash 611777856, now seen corresponding path program 317 times [2020-01-16 18:35:54,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:54,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889394850] [2020-01-16 18:35:54,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:55,305 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:35:55,434 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:55,440 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 18:35:55,440 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889394850] [2020-01-16 18:35:55,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:55,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:55,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650912478] [2020-01-16 18:35:55,440 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:55,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:55,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:55,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:55,441 INFO L87 Difference]: Start difference. First operand 1570 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:35:55,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:55,595 INFO L93 Difference]: Finished difference Result 2940 states and 11692 transitions. [2020-01-16 18:35:55,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:55,596 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:55,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:55,602 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:35:55,603 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:35:55,603 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 18:35:55,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:35:55,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1575. [2020-01-16 18:35:55,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:35:55,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7051 transitions. [2020-01-16 18:35:55,670 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7051 transitions. Word has length 28 [2020-01-16 18:35:55,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:55,670 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7051 transitions. [2020-01-16 18:35:55,670 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7051 transitions. [2020-01-16 18:35:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:55,673 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:55,673 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 18:35:55,673 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 18:35:55,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:55,673 INFO L82 PathProgramCache]: Analyzing trace with hash -704379448, now seen corresponding path program 318 times [2020-01-16 18:35:55,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:55,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661476140] [2020-01-16 18:35:55,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:56,136 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2020-01-16 18:35:56,265 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:35:56,272 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 18:35:56,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661476140] [2020-01-16 18:35:56,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:56,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:56,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350576983] [2020-01-16 18:35:56,273 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:56,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:56,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:56,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:56,273 INFO L87 Difference]: Start difference. First operand 1575 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:35:56,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:56,465 INFO L93 Difference]: Finished difference Result 2934 states and 11676 transitions. [2020-01-16 18:35:56,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:56,466 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:56,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:56,473 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 18:35:56,473 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 18:35:56,473 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 18:35:56,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 18:35:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1565. [2020-01-16 18:35:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:35:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7029 transitions. [2020-01-16 18:35:56,539 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7029 transitions. Word has length 28 [2020-01-16 18:35:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:56,539 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7029 transitions. [2020-01-16 18:35:56,539 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7029 transitions. [2020-01-16 18:35:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:56,542 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:56,542 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:35:56,542 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 18:35:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:56,542 INFO L82 PathProgramCache]: Analyzing trace with hash -859246708, now seen corresponding path program 319 times [2020-01-16 18:35:56,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:56,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083668353] [2020-01-16 18:35:56,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:57,122 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:57,129 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 18:35:57,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083668353] [2020-01-16 18:35:57,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:57,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:57,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953736515] [2020-01-16 18:35:57,130 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:57,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:57,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:57,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:57,131 INFO L87 Difference]: Start difference. First operand 1565 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:35:57,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:57,350 INFO L93 Difference]: Finished difference Result 2945 states and 11714 transitions. [2020-01-16 18:35:57,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:57,350 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:57,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:57,357 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:35:57,358 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:35:57,358 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 18:35:57,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:35:57,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1577. [2020-01-16 18:35:57,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:35:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7062 transitions. [2020-01-16 18:35:57,425 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7062 transitions. Word has length 28 [2020-01-16 18:35:57,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:57,425 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7062 transitions. [2020-01-16 18:35:57,425 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:57,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7062 transitions. [2020-01-16 18:35:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:57,427 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:57,428 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 18:35:57,428 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 18:35:57,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:57,428 INFO L82 PathProgramCache]: Analyzing trace with hash 630158288, now seen corresponding path program 320 times [2020-01-16 18:35:57,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:57,428 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223616150] [2020-01-16 18:35:57,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:57,915 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:35:58,043 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:58,050 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 18:35:58,050 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223616150] [2020-01-16 18:35:58,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:58,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:58,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614380920] [2020-01-16 18:35:58,050 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:58,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:58,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:58,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:58,051 INFO L87 Difference]: Start difference. First operand 1577 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:35:58,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:58,230 INFO L93 Difference]: Finished difference Result 2950 states and 11718 transitions. [2020-01-16 18:35:58,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:58,231 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:58,238 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:35:58,238 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:35:58,239 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:35:58,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:35:58,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1571. [2020-01-16 18:35:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:35:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7045 transitions. [2020-01-16 18:35:58,306 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7045 transitions. Word has length 28 [2020-01-16 18:35:58,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:58,306 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7045 transitions. [2020-01-16 18:35:58,306 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7045 transitions. [2020-01-16 18:35:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:58,309 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:58,309 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 18:35:58,309 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 18:35:58,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:58,309 INFO L82 PathProgramCache]: Analyzing trace with hash 216464448, now seen corresponding path program 321 times [2020-01-16 18:35:58,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:58,309 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348823490] [2020-01-16 18:35:58,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:58,887 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:35:58,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348823490] [2020-01-16 18:35:58,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:58,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:58,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497450240] [2020-01-16 18:35:58,893 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:58,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:58,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:58,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:58,894 INFO L87 Difference]: Start difference. First operand 1571 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:35:59,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:59,082 INFO L93 Difference]: Finished difference Result 2941 states and 11701 transitions. [2020-01-16 18:35:59,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:59,082 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:59,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:59,089 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:35:59,090 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:35:59,090 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:35:59,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:35:59,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1576. [2020-01-16 18:35:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:35:59,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7054 transitions. [2020-01-16 18:35:59,157 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7054 transitions. Word has length 28 [2020-01-16 18:35:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:35:59,157 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7054 transitions. [2020-01-16 18:35:59,157 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:35:59,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7054 transitions. [2020-01-16 18:35:59,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:35:59,159 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:35:59,160 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 18:35:59,160 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 18:35:59,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:35:59,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1879117136, now seen corresponding path program 322 times [2020-01-16 18:35:59,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:35:59,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961115291] [2020-01-16 18:35:59,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:35:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:35:59,526 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-01-16 18:35:59,771 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:35:59,778 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 18:35:59,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961115291] [2020-01-16 18:35:59,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:35:59,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:35:59,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608333830] [2020-01-16 18:35:59,779 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:35:59,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:35:59,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:35:59,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:35:59,779 INFO L87 Difference]: Start difference. First operand 1576 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:35:59,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:35:59,972 INFO L93 Difference]: Finished difference Result 2943 states and 11700 transitions. [2020-01-16 18:35:59,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:35:59,973 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:35:59,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:35:59,980 INFO L225 Difference]: With dead ends: 2943 [2020-01-16 18:35:59,980 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:35:59,980 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 18:36:00,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:36:00,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1571. [2020-01-16 18:36:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:36:00,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:36:00,048 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:36:00,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:00,048 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:36:00,048 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:00,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:36:00,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:00,050 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:00,050 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 18:36:00,050 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 18:36:00,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:00,051 INFO L82 PathProgramCache]: Analyzing trace with hash 632784064, now seen corresponding path program 323 times [2020-01-16 18:36:00,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:00,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388395277] [2020-01-16 18:36:00,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:00,514 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:36:00,642 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:36:00,649 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 18:36:00,649 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388395277] [2020-01-16 18:36:00,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:00,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:00,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127112227] [2020-01-16 18:36:00,650 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:00,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:00,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:00,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:00,650 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:36:00,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:00,804 INFO L93 Difference]: Finished difference Result 2954 states and 11722 transitions. [2020-01-16 18:36:00,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:00,805 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:00,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:00,812 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 18:36:00,813 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:36:00,813 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 18:36:00,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:36:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1579. [2020-01-16 18:36:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:36:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7054 transitions. [2020-01-16 18:36:00,879 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7054 transitions. Word has length 28 [2020-01-16 18:36:00,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:00,879 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7054 transitions. [2020-01-16 18:36:00,879 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:00,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7054 transitions. [2020-01-16 18:36:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:00,882 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:00,882 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 18:36:00,882 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 18:36:00,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:00,882 INFO L82 PathProgramCache]: Analyzing trace with hash 806031756, now seen corresponding path program 324 times [2020-01-16 18:36:00,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:00,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49602400] [2020-01-16 18:36:00,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:01,480 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:36:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:01,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49602400] [2020-01-16 18:36:01,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:01,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:01,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23581117] [2020-01-16 18:36:01,488 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:01,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:01,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:01,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:01,488 INFO L87 Difference]: Start difference. First operand 1579 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:36:01,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:01,686 INFO L93 Difference]: Finished difference Result 2951 states and 11709 transitions. [2020-01-16 18:36:01,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:01,686 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:01,694 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:36:01,694 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:36:01,694 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:36:01,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:36:01,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1565. [2020-01-16 18:36:01,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:36:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7024 transitions. [2020-01-16 18:36:01,761 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7024 transitions. Word has length 28 [2020-01-16 18:36:01,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:01,762 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7024 transitions. [2020-01-16 18:36:01,762 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7024 transitions. [2020-01-16 18:36:01,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:01,764 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:01,764 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:01,764 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 18:36:01,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:01,764 INFO L82 PathProgramCache]: Analyzing trace with hash -817234292, now seen corresponding path program 325 times [2020-01-16 18:36:01,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:01,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716954665] [2020-01-16 18:36:01,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:02,230 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:36:02,356 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:36:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:02,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716954665] [2020-01-16 18:36:02,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:02,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:02,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212009062] [2020-01-16 18:36:02,362 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:02,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:02,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:02,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:02,363 INFO L87 Difference]: Start difference. First operand 1565 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:36:02,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:02,588 INFO L93 Difference]: Finished difference Result 2923 states and 11659 transitions. [2020-01-16 18:36:02,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:02,589 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:02,596 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:36:02,596 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:36:02,597 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 18:36:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:36:02,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1573. [2020-01-16 18:36:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:36:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7046 transitions. [2020-01-16 18:36:02,662 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7046 transitions. Word has length 28 [2020-01-16 18:36:02,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:02,663 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7046 transitions. [2020-01-16 18:36:02,663 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7046 transitions. [2020-01-16 18:36:02,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:02,665 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:02,665 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:02,665 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 18:36:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:02,665 INFO L82 PathProgramCache]: Analyzing trace with hash -643986600, now seen corresponding path program 326 times [2020-01-16 18:36:02,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:02,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389349939] [2020-01-16 18:36:02,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:03,244 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:03,251 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 18:36:03,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389349939] [2020-01-16 18:36:03,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:03,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:03,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848874215] [2020-01-16 18:36:03,251 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:03,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:03,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:03,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:03,252 INFO L87 Difference]: Start difference. First operand 1573 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:36:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:03,456 INFO L93 Difference]: Finished difference Result 2922 states and 11653 transitions. [2020-01-16 18:36:03,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:03,456 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:03,463 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:36:03,463 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 18:36:03,464 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 18:36:03,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 18:36:03,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1569. [2020-01-16 18:36:03,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:36:03,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7035 transitions. [2020-01-16 18:36:03,531 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7035 transitions. Word has length 28 [2020-01-16 18:36:03,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:03,531 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7035 transitions. [2020-01-16 18:36:03,531 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:03,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7035 transitions. [2020-01-16 18:36:03,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:03,533 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:03,533 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:03,534 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 18:36:03,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:03,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1890319672, now seen corresponding path program 327 times [2020-01-16 18:36:03,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:03,534 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925416589] [2020-01-16 18:36:03,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:04,122 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:36:04,129 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 18:36:04,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925416589] [2020-01-16 18:36:04,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:04,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:04,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63416360] [2020-01-16 18:36:04,130 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:04,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:04,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:04,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:04,130 INFO L87 Difference]: Start difference. First operand 1569 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:36:04,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:04,325 INFO L93 Difference]: Finished difference Result 2927 states and 11664 transitions. [2020-01-16 18:36:04,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:04,326 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:04,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:04,333 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 18:36:04,333 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 18:36:04,334 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 18:36:04,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 18:36:04,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1574. [2020-01-16 18:36:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:36:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7044 transitions. [2020-01-16 18:36:04,401 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7044 transitions. Word has length 28 [2020-01-16 18:36:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:04,401 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7044 transitions. [2020-01-16 18:36:04,401 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:04,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7044 transitions. [2020-01-16 18:36:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:04,404 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:04,404 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:04,404 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 18:36:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:04,404 INFO L82 PathProgramCache]: Analyzing trace with hash -227666984, now seen corresponding path program 328 times [2020-01-16 18:36:04,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:04,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711702235] [2020-01-16 18:36:04,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:04,978 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:36:04,984 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 18:36:04,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711702235] [2020-01-16 18:36:04,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:04,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:04,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278924552] [2020-01-16 18:36:04,985 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:04,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:04,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:04,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:04,986 INFO L87 Difference]: Start difference. First operand 1574 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:36:05,190 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-01-16 18:36:05,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:05,207 INFO L93 Difference]: Finished difference Result 2929 states and 11663 transitions. [2020-01-16 18:36:05,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:05,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:05,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:05,215 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:36:05,216 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 18:36:05,216 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 18:36:05,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 18:36:05,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1569. [2020-01-16 18:36:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:36:05,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7031 transitions. [2020-01-16 18:36:05,282 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7031 transitions. Word has length 28 [2020-01-16 18:36:05,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:05,282 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7031 transitions. [2020-01-16 18:36:05,283 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:05,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7031 transitions. [2020-01-16 18:36:05,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:05,285 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:05,285 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:05,285 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 18:36:05,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:05,285 INFO L82 PathProgramCache]: Analyzing trace with hash -641360824, now seen corresponding path program 329 times [2020-01-16 18:36:05,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:05,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285736034] [2020-01-16 18:36:05,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:05,864 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:05,871 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285736034] [2020-01-16 18:36:05,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:05,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:05,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666883309] [2020-01-16 18:36:05,872 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:05,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:05,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:05,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:05,872 INFO L87 Difference]: Start difference. First operand 1569 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:36:06,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:06,070 INFO L93 Difference]: Finished difference Result 2924 states and 11653 transitions. [2020-01-16 18:36:06,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:06,070 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:06,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:06,078 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:36:06,078 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 18:36:06,078 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 18:36:06,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 18:36:06,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1573. [2020-01-16 18:36:06,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:36:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7038 transitions. [2020-01-16 18:36:06,146 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7038 transitions. Word has length 28 [2020-01-16 18:36:06,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:06,146 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7038 transitions. [2020-01-16 18:36:06,146 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7038 transitions. [2020-01-16 18:36:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:06,148 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:06,148 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 18:36:06,148 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 18:36:06,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:06,149 INFO L82 PathProgramCache]: Analyzing trace with hash 848044172, now seen corresponding path program 330 times [2020-01-16 18:36:06,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:06,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566713827] [2020-01-16 18:36:06,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:06,731 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:06,737 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 18:36:06,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566713827] [2020-01-16 18:36:06,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:06,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:06,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205667088] [2020-01-16 18:36:06,738 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:06,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:06,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:06,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:06,738 INFO L87 Difference]: Start difference. First operand 1573 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:36:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:06,935 INFO L93 Difference]: Finished difference Result 2927 states and 11655 transitions. [2020-01-16 18:36:06,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:06,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:06,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:06,943 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 18:36:06,943 INFO L226 Difference]: Without dead ends: 2902 [2020-01-16 18:36:06,943 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 18:36:06,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2020-01-16 18:36:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1565. [2020-01-16 18:36:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:36:07,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7020 transitions. [2020-01-16 18:36:07,008 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7020 transitions. Word has length 28 [2020-01-16 18:36:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:07,008 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7020 transitions. [2020-01-16 18:36:07,009 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:07,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7020 transitions. [2020-01-16 18:36:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:07,011 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:07,011 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:07,011 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 18:36:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:07,011 INFO L82 PathProgramCache]: Analyzing trace with hash 693176912, now seen corresponding path program 331 times [2020-01-16 18:36:07,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:07,011 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616480537] [2020-01-16 18:36:07,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:07,465 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:36:07,592 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:07,599 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 18:36:07,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616480537] [2020-01-16 18:36:07,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:07,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:07,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883824214] [2020-01-16 18:36:07,599 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:07,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:07,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:07,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:07,600 INFO L87 Difference]: Start difference. First operand 1565 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:36:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:07,758 INFO L93 Difference]: Finished difference Result 2944 states and 11697 transitions. [2020-01-16 18:36:07,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:07,759 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:07,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:07,765 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 18:36:07,765 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:36:07,765 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 18:36:07,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:36:07,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1575. [2020-01-16 18:36:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:36:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7046 transitions. [2020-01-16 18:36:07,831 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7046 transitions. Word has length 28 [2020-01-16 18:36:07,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:07,831 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7046 transitions. [2020-01-16 18:36:07,831 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:07,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7046 transitions. [2020-01-16 18:36:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:07,833 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:07,833 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:07,833 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 18:36:07,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:07,834 INFO L82 PathProgramCache]: Analyzing trace with hash -622980392, now seen corresponding path program 332 times [2020-01-16 18:36:07,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:07,834 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140783789] [2020-01-16 18:36:07,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:08,414 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:08,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140783789] [2020-01-16 18:36:08,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:08,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:08,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794839769] [2020-01-16 18:36:08,421 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:08,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:08,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:08,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:08,421 INFO L87 Difference]: Start difference. First operand 1575 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:36:08,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:08,610 INFO L93 Difference]: Finished difference Result 2938 states and 11681 transitions. [2020-01-16 18:36:08,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:08,611 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:08,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:08,618 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 18:36:08,618 INFO L226 Difference]: Without dead ends: 2919 [2020-01-16 18:36:08,618 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 18:36:08,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-01-16 18:36:08,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1570. [2020-01-16 18:36:08,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:36:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7033 transitions. [2020-01-16 18:36:08,685 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7033 transitions. Word has length 28 [2020-01-16 18:36:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:08,685 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7033 transitions. [2020-01-16 18:36:08,685 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7033 transitions. [2020-01-16 18:36:08,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:08,687 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:08,688 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:08,688 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 18:36:08,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:08,688 INFO L82 PathProgramCache]: Analyzing trace with hash -379908468, now seen corresponding path program 333 times [2020-01-16 18:36:08,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:08,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513506274] [2020-01-16 18:36:08,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:09,162 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:36:09,289 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:09,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513506274] [2020-01-16 18:36:09,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:09,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:09,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341948362] [2020-01-16 18:36:09,297 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:09,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:09,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:09,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:09,297 INFO L87 Difference]: Start difference. First operand 1570 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:36:09,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:09,458 INFO L93 Difference]: Finished difference Result 2950 states and 11707 transitions. [2020-01-16 18:36:09,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:09,459 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:09,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:09,467 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:36:09,467 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:36:09,467 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 18:36:09,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:36:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1578. [2020-01-16 18:36:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:36:09,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7047 transitions. [2020-01-16 18:36:09,539 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7047 transitions. Word has length 28 [2020-01-16 18:36:09,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:09,539 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7047 transitions. [2020-01-16 18:36:09,539 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:09,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7047 transitions. [2020-01-16 18:36:09,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:09,541 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:09,541 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 18:36:09,541 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 18:36:09,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:09,542 INFO L82 PathProgramCache]: Analyzing trace with hash -206660776, now seen corresponding path program 334 times [2020-01-16 18:36:09,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:09,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083302337] [2020-01-16 18:36:09,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:10,132 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:10,139 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 18:36:10,140 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083302337] [2020-01-16 18:36:10,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:10,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:10,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065371764] [2020-01-16 18:36:10,140 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:10,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:10,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:10,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:10,141 INFO L87 Difference]: Start difference. First operand 1578 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:36:10,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:10,333 INFO L93 Difference]: Finished difference Result 2947 states and 11694 transitions. [2020-01-16 18:36:10,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:10,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:10,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:10,342 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:36:10,342 INFO L226 Difference]: Without dead ends: 2922 [2020-01-16 18:36:10,342 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 18:36:10,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-01-16 18:36:10,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1570. [2020-01-16 18:36:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:36:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7028 transitions. [2020-01-16 18:36:10,409 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7028 transitions. Word has length 28 [2020-01-16 18:36:10,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:10,409 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7028 transitions. [2020-01-16 18:36:10,409 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:10,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7028 transitions. [2020-01-16 18:36:10,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:10,412 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:10,412 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 18:36:10,412 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 18:36:10,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:10,412 INFO L82 PathProgramCache]: Analyzing trace with hash 452730764, now seen corresponding path program 335 times [2020-01-16 18:36:10,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:10,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132935175] [2020-01-16 18:36:10,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:11,016 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:11,022 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 18:36:11,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132935175] [2020-01-16 18:36:11,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:11,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:11,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636673854] [2020-01-16 18:36:11,023 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:11,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:11,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:11,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:11,024 INFO L87 Difference]: Start difference. First operand 1570 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:36:11,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:11,264 INFO L93 Difference]: Finished difference Result 2934 states and 11669 transitions. [2020-01-16 18:36:11,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:11,265 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:11,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:11,272 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 18:36:11,272 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:36:11,272 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:36:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:36:11,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1574. [2020-01-16 18:36:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:36:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7035 transitions. [2020-01-16 18:36:11,338 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7035 transitions. Word has length 28 [2020-01-16 18:36:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:11,338 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7035 transitions. [2020-01-16 18:36:11,338 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7035 transitions. [2020-01-16 18:36:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:11,340 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:11,341 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 18:36:11,341 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 18:36:11,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:11,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1942135760, now seen corresponding path program 336 times [2020-01-16 18:36:11,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:11,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198164077] [2020-01-16 18:36:11,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:11,802 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:36:11,931 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:11,938 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 18:36:11,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198164077] [2020-01-16 18:36:11,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:11,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:11,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253999450] [2020-01-16 18:36:11,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:11,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:11,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:11,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:11,940 INFO L87 Difference]: Start difference. First operand 1574 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:36:12,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:12,158 INFO L93 Difference]: Finished difference Result 2937 states and 11671 transitions. [2020-01-16 18:36:12,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:12,158 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:12,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:12,165 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:36:12,165 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:36:12,165 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 18:36:12,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:36:12,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1560. [2020-01-16 18:36:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-01-16 18:36:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 7006 transitions. [2020-01-16 18:36:12,232 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 7006 transitions. Word has length 28 [2020-01-16 18:36:12,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:12,232 INFO L478 AbstractCegarLoop]: Abstraction has 1560 states and 7006 transitions. [2020-01-16 18:36:12,232 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:12,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 7006 transitions. [2020-01-16 18:36:12,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:12,234 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:12,234 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 18:36:12,234 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 18:36:12,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:12,235 INFO L82 PathProgramCache]: Analyzing trace with hash 727901384, now seen corresponding path program 337 times [2020-01-16 18:36:12,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:12,235 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487653715] [2020-01-16 18:36:12,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:12,838 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:12,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487653715] [2020-01-16 18:36:12,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:12,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:12,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206084664] [2020-01-16 18:36:12,846 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:12,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:12,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:12,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:12,846 INFO L87 Difference]: Start difference. First operand 1560 states and 7006 transitions. Second operand 11 states. [2020-01-16 18:36:13,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:13,067 INFO L93 Difference]: Finished difference Result 2946 states and 11716 transitions. [2020-01-16 18:36:13,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:13,068 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:13,075 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:36:13,075 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:36:13,075 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 18:36:13,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:36:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1577. [2020-01-16 18:36:13,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:36:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7060 transitions. [2020-01-16 18:36:13,141 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7060 transitions. Word has length 28 [2020-01-16 18:36:13,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:13,142 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7060 transitions. [2020-01-16 18:36:13,142 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7060 transitions. [2020-01-16 18:36:13,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:13,144 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:13,144 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 18:36:13,144 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 18:36:13,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:13,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1472603882, now seen corresponding path program 338 times [2020-01-16 18:36:13,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:13,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981449639] [2020-01-16 18:36:13,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:13,605 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:36:13,731 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:13,737 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 18:36:13,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981449639] [2020-01-16 18:36:13,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:13,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:13,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896024661] [2020-01-16 18:36:13,738 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:13,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:13,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:13,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:13,739 INFO L87 Difference]: Start difference. First operand 1577 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:36:13,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:13,909 INFO L93 Difference]: Finished difference Result 2950 states and 11717 transitions. [2020-01-16 18:36:13,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:13,910 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:13,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:13,917 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:36:13,917 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 18:36:13,918 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 18:36:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 18:36:13,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1570. [2020-01-16 18:36:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:36:13,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7042 transitions. [2020-01-16 18:36:13,983 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7042 transitions. Word has length 28 [2020-01-16 18:36:13,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:13,984 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7042 transitions. [2020-01-16 18:36:13,984 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7042 transitions. [2020-01-16 18:36:13,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:13,986 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:13,986 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:13,986 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 18:36:13,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:13,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1418269376, now seen corresponding path program 339 times [2020-01-16 18:36:13,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:13,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407915573] [2020-01-16 18:36:13,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:14,442 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:36:14,571 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:14,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407915573] [2020-01-16 18:36:14,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:14,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:14,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247369010] [2020-01-16 18:36:14,579 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:14,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:14,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:14,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:14,580 INFO L87 Difference]: Start difference. First operand 1570 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:36:14,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:14,784 INFO L93 Difference]: Finished difference Result 2937 states and 11692 transitions. [2020-01-16 18:36:14,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:14,784 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:14,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:14,792 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:36:14,792 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:36:14,792 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 18:36:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:36:14,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1574. [2020-01-16 18:36:14,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:36:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7049 transitions. [2020-01-16 18:36:14,857 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7049 transitions. Word has length 28 [2020-01-16 18:36:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:14,857 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7049 transitions. [2020-01-16 18:36:14,858 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7049 transitions. [2020-01-16 18:36:14,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:14,860 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:14,860 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 18:36:14,860 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 18:36:14,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:14,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1989724182, now seen corresponding path program 340 times [2020-01-16 18:36:14,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:14,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621010676] [2020-01-16 18:36:14,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:15,444 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:15,451 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 18:36:15,451 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621010676] [2020-01-16 18:36:15,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:15,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:15,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91228175] [2020-01-16 18:36:15,452 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:15,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:15,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:15,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:15,452 INFO L87 Difference]: Start difference. First operand 1574 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:36:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:15,655 INFO L93 Difference]: Finished difference Result 2935 states and 11684 transitions. [2020-01-16 18:36:15,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:15,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:15,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:15,663 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 18:36:15,663 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 18:36:15,664 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 18:36:15,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 18:36:15,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1570. [2020-01-16 18:36:15,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:36:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7038 transitions. [2020-01-16 18:36:15,729 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7038 transitions. Word has length 28 [2020-01-16 18:36:15,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:15,729 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7038 transitions. [2020-01-16 18:36:15,729 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:15,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7038 transitions. [2020-01-16 18:36:15,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:15,731 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:15,732 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 18:36:15,732 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 18:36:15,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:15,732 INFO L82 PathProgramCache]: Analyzing trace with hash 937374080, now seen corresponding path program 341 times [2020-01-16 18:36:15,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:15,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646699629] [2020-01-16 18:36:15,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:16,339 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:16,345 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 18:36:16,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646699629] [2020-01-16 18:36:16,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:16,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:16,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862830823] [2020-01-16 18:36:16,346 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:16,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:16,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:16,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:16,347 INFO L87 Difference]: Start difference. First operand 1570 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:36:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:16,506 INFO L93 Difference]: Finished difference Result 2946 states and 11704 transitions. [2020-01-16 18:36:16,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:16,506 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:16,514 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:36:16,514 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:36:16,515 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 18:36:16,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:36:16,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1575. [2020-01-16 18:36:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:36:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7046 transitions. [2020-01-16 18:36:16,584 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7046 transitions. Word has length 28 [2020-01-16 18:36:16,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:16,584 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7046 transitions. [2020-01-16 18:36:16,584 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:16,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7046 transitions. [2020-01-16 18:36:16,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:16,586 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:16,587 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 18:36:16,587 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 18:36:16,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:16,587 INFO L82 PathProgramCache]: Analyzing trace with hash -378783224, now seen corresponding path program 342 times [2020-01-16 18:36:16,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:16,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633646099] [2020-01-16 18:36:16,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:17,165 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:17,172 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 18:36:17,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633646099] [2020-01-16 18:36:17,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:17,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:17,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83039052] [2020-01-16 18:36:17,172 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:17,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:17,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:17,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:17,173 INFO L87 Difference]: Start difference. First operand 1575 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:36:17,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:17,419 INFO L93 Difference]: Finished difference Result 2940 states and 11688 transitions. [2020-01-16 18:36:17,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:17,420 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:17,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:17,427 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:36:17,428 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:36:17,428 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 18:36:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:36:17,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1565. [2020-01-16 18:36:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:36:17,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7024 transitions. [2020-01-16 18:36:17,494 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7024 transitions. Word has length 28 [2020-01-16 18:36:17,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:17,494 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7024 transitions. [2020-01-16 18:36:17,494 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:17,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7024 transitions. [2020-01-16 18:36:17,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:17,497 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:17,497 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:17,497 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 18:36:17,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:17,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1821992972, now seen corresponding path program 343 times [2020-01-16 18:36:17,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:17,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669278660] [2020-01-16 18:36:17,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:17,963 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:36:18,093 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:18,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669278660] [2020-01-16 18:36:18,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:18,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:18,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950993410] [2020-01-16 18:36:18,100 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:18,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:18,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:18,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:18,101 INFO L87 Difference]: Start difference. First operand 1565 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:36:18,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:18,305 INFO L93 Difference]: Finished difference Result 2956 states and 11740 transitions. [2020-01-16 18:36:18,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:18,306 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:18,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:18,314 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:36:18,314 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:36:18,314 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 18:36:18,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:36:18,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1579. [2020-01-16 18:36:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:36:18,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7063 transitions. [2020-01-16 18:36:18,381 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7063 transitions. Word has length 28 [2020-01-16 18:36:18,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:18,382 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7063 transitions. [2020-01-16 18:36:18,382 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:18,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7063 transitions. [2020-01-16 18:36:18,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:18,384 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:18,384 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:18,384 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 18:36:18,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:18,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1728271826, now seen corresponding path program 344 times [2020-01-16 18:36:18,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:18,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907675874] [2020-01-16 18:36:18,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:18,857 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:36:18,983 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:18,990 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 18:36:18,991 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907675874] [2020-01-16 18:36:18,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:18,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:18,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167891] [2020-01-16 18:36:18,991 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:18,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:18,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:18,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:18,991 INFO L87 Difference]: Start difference. First operand 1579 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:36:19,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:19,165 INFO L93 Difference]: Finished difference Result 2960 states and 11741 transitions. [2020-01-16 18:36:19,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:19,166 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:19,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:19,173 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 18:36:19,173 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:36:19,173 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 18:36:19,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:36:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1572. [2020-01-16 18:36:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:36:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7043 transitions. [2020-01-16 18:36:19,240 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7043 transitions. Word has length 28 [2020-01-16 18:36:19,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:19,240 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7043 transitions. [2020-01-16 18:36:19,240 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7043 transitions. [2020-01-16 18:36:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:19,243 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:19,243 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:19,243 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 18:36:19,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:19,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1397263168, now seen corresponding path program 345 times [2020-01-16 18:36:19,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:19,243 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41931617] [2020-01-16 18:36:19,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:19,722 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:36:19,851 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:19,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41931617] [2020-01-16 18:36:19,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:19,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:19,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571941027] [2020-01-16 18:36:19,858 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:19,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:19,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:19,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:19,859 INFO L87 Difference]: Start difference. First operand 1572 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:36:20,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:20,068 INFO L93 Difference]: Finished difference Result 2952 states and 11726 transitions. [2020-01-16 18:36:20,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:20,068 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:20,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:20,076 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:36:20,076 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:36:20,076 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 18:36:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:36:20,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1578. [2020-01-16 18:36:20,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:36:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7054 transitions. [2020-01-16 18:36:20,141 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7054 transitions. Word has length 28 [2020-01-16 18:36:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:20,142 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7054 transitions. [2020-01-16 18:36:20,142 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:20,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7054 transitions. [2020-01-16 18:36:20,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:20,144 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:20,144 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 18:36:20,144 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 18:36:20,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:20,144 INFO L82 PathProgramCache]: Analyzing trace with hash -479312978, now seen corresponding path program 346 times [2020-01-16 18:36:20,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:20,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012786931] [2020-01-16 18:36:20,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:20,738 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:20,745 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 18:36:20,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012786931] [2020-01-16 18:36:20,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:20,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:20,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837972272] [2020-01-16 18:36:20,746 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:20,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:20,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:20,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:20,746 INFO L87 Difference]: Start difference. First operand 1578 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:36:20,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:20,978 INFO L93 Difference]: Finished difference Result 2953 states and 11722 transitions. [2020-01-16 18:36:20,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:20,979 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:20,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:20,986 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:36:20,986 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:36:20,986 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 18:36:21,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:36:21,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1572. [2020-01-16 18:36:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:36:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7037 transitions. [2020-01-16 18:36:21,053 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7037 transitions. Word has length 28 [2020-01-16 18:36:21,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:21,053 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7037 transitions. [2020-01-16 18:36:21,053 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7037 transitions. [2020-01-16 18:36:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:21,055 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:21,055 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 18:36:21,055 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 18:36:21,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:21,056 INFO L82 PathProgramCache]: Analyzing trace with hash 958380288, now seen corresponding path program 347 times [2020-01-16 18:36:21,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:21,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842236785] [2020-01-16 18:36:21,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:21,545 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:36:21,674 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:21,681 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 18:36:21,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842236785] [2020-01-16 18:36:21,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:21,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:21,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543787226] [2020-01-16 18:36:21,681 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:21,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:21,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:21,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:21,682 INFO L87 Difference]: Start difference. First operand 1572 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:36:21,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:21,844 INFO L93 Difference]: Finished difference Result 2962 states and 11739 transitions. [2020-01-16 18:36:21,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:21,845 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:21,852 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:36:21,852 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:36:21,852 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 18:36:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:36:21,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1580. [2020-01-16 18:36:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:36:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7051 transitions. [2020-01-16 18:36:21,947 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7051 transitions. Word has length 28 [2020-01-16 18:36:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:21,947 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7051 transitions. [2020-01-16 18:36:21,947 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7051 transitions. [2020-01-16 18:36:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:21,950 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:21,950 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 18:36:21,950 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 18:36:21,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:21,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1131627980, now seen corresponding path program 348 times [2020-01-16 18:36:21,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:21,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638382819] [2020-01-16 18:36:21,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:22,425 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:36:22,556 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:22,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638382819] [2020-01-16 18:36:22,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:22,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:22,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124724199] [2020-01-16 18:36:22,564 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:22,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:22,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:22,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:22,564 INFO L87 Difference]: Start difference. First operand 1580 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:36:22,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:22,752 INFO L93 Difference]: Finished difference Result 2959 states and 11726 transitions. [2020-01-16 18:36:22,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:22,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:22,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:22,760 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:36:22,760 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 18:36:22,760 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 18:36:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 18:36:22,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1565. [2020-01-16 18:36:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:36:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7019 transitions. [2020-01-16 18:36:22,825 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7019 transitions. Word has length 28 [2020-01-16 18:36:22,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:22,825 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7019 transitions. [2020-01-16 18:36:22,826 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7019 transitions. [2020-01-16 18:36:22,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:22,828 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:22,828 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 18:36:22,828 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 18:36:22,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:22,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1864005388, now seen corresponding path program 349 times [2020-01-16 18:36:22,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:22,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063554267] [2020-01-16 18:36:22,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:23,289 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:36:23,418 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:23,425 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063554267] [2020-01-16 18:36:23,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:23,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:23,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259745287] [2020-01-16 18:36:23,426 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:23,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:23,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:23,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:23,426 INFO L87 Difference]: Start difference. First operand 1565 states and 7019 transitions. Second operand 11 states. [2020-01-16 18:36:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:23,625 INFO L93 Difference]: Finished difference Result 2931 states and 11675 transitions. [2020-01-16 18:36:23,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:23,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:23,633 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 18:36:23,633 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 18:36:23,634 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 18:36:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 18:36:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1573. [2020-01-16 18:36:23,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:36:23,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7041 transitions. [2020-01-16 18:36:23,701 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7041 transitions. Word has length 28 [2020-01-16 18:36:23,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:23,701 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7041 transitions. [2020-01-16 18:36:23,701 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:23,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7041 transitions. [2020-01-16 18:36:23,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:23,704 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:23,704 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 18:36:23,704 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 18:36:23,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:23,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1292550582, now seen corresponding path program 350 times [2020-01-16 18:36:23,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:23,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886315405] [2020-01-16 18:36:23,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:24,295 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:24,301 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886315405] [2020-01-16 18:36:24,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:24,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:24,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763271351] [2020-01-16 18:36:24,302 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:24,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:24,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:24,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:24,302 INFO L87 Difference]: Start difference. First operand 1573 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:36:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:24,498 INFO L93 Difference]: Finished difference Result 2929 states and 11667 transitions. [2020-01-16 18:36:24,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:24,498 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:24,506 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:36:24,506 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:36:24,506 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 18:36:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:36:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1569. [2020-01-16 18:36:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:36:24,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7030 transitions. [2020-01-16 18:36:24,572 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7030 transitions. Word has length 28 [2020-01-16 18:36:24,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:24,572 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7030 transitions. [2020-01-16 18:36:24,572 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:24,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7030 transitions. [2020-01-16 18:36:24,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:24,574 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:24,574 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:24,574 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 18:36:24,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:24,574 INFO L82 PathProgramCache]: Analyzing trace with hash 790920008, now seen corresponding path program 351 times [2020-01-16 18:36:24,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:24,575 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643569156] [2020-01-16 18:36:24,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:25,047 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:36:25,171 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:25,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643569156] [2020-01-16 18:36:25,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:25,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:25,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023501478] [2020-01-16 18:36:25,179 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:25,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:25,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:25,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:25,179 INFO L87 Difference]: Start difference. First operand 1569 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:36:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:25,372 INFO L93 Difference]: Finished difference Result 2936 states and 11683 transitions. [2020-01-16 18:36:25,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:25,373 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:25,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:25,380 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 18:36:25,380 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:36:25,381 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 18:36:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:36:25,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1575. [2020-01-16 18:36:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:36:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7041 transitions. [2020-01-16 18:36:25,447 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7041 transitions. Word has length 28 [2020-01-16 18:36:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:25,447 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7041 transitions. [2020-01-16 18:36:25,447 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7041 transitions. [2020-01-16 18:36:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:25,449 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:25,449 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 18:36:25,449 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 18:36:25,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:25,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1708870198, now seen corresponding path program 352 times [2020-01-16 18:36:25,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:25,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326280483] [2020-01-16 18:36:25,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:25,916 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:36:26,046 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:26,053 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 18:36:26,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326280483] [2020-01-16 18:36:26,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:26,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:26,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032391532] [2020-01-16 18:36:26,054 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:26,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:26,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:26,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:26,054 INFO L87 Difference]: Start difference. First operand 1575 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:36:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:26,258 INFO L93 Difference]: Finished difference Result 2937 states and 11679 transitions. [2020-01-16 18:36:26,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:26,259 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:26,266 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:36:26,266 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 18:36:26,267 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 18:36:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 18:36:26,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1569. [2020-01-16 18:36:26,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:36:26,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7026 transitions. [2020-01-16 18:36:26,332 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7026 transitions. Word has length 28 [2020-01-16 18:36:26,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:26,332 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7026 transitions. [2020-01-16 18:36:26,332 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:26,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7026 transitions. [2020-01-16 18:36:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:26,334 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:26,334 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:26,335 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 18:36:26,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:26,335 INFO L82 PathProgramCache]: Analyzing trace with hash -315764600, now seen corresponding path program 353 times [2020-01-16 18:36:26,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:26,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473166213] [2020-01-16 18:36:26,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:26,932 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:26,938 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 18:36:26,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473166213] [2020-01-16 18:36:26,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:26,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:26,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445477838] [2020-01-16 18:36:26,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:26,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:26,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:26,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:26,940 INFO L87 Difference]: Start difference. First operand 1569 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:36:27,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:27,172 INFO L93 Difference]: Finished difference Result 2930 states and 11665 transitions. [2020-01-16 18:36:27,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:27,172 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:27,180 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 18:36:27,180 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:36:27,180 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 18:36:27,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:36:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1573. [2020-01-16 18:36:27,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:36:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7033 transitions. [2020-01-16 18:36:27,248 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7033 transitions. Word has length 28 [2020-01-16 18:36:27,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:27,248 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7033 transitions. [2020-01-16 18:36:27,248 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:27,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7033 transitions. [2020-01-16 18:36:27,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:27,250 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:27,250 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:27,250 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 18:36:27,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:27,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1173640396, now seen corresponding path program 354 times [2020-01-16 18:36:27,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:27,251 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160659935] [2020-01-16 18:36:27,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:27,732 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:36:27,857 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:27,864 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 18:36:27,864 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160659935] [2020-01-16 18:36:27,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:27,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:27,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388222503] [2020-01-16 18:36:27,865 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:27,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:27,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:27,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:27,865 INFO L87 Difference]: Start difference. First operand 1573 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:36:28,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:28,064 INFO L93 Difference]: Finished difference Result 2933 states and 11667 transitions. [2020-01-16 18:36:28,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:28,064 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:28,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:28,071 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:36:28,071 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:36:28,071 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 18:36:28,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:36:28,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1565. [2020-01-16 18:36:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:36:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7015 transitions. [2020-01-16 18:36:28,137 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7015 transitions. Word has length 28 [2020-01-16 18:36:28,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:28,137 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7015 transitions. [2020-01-16 18:36:28,137 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7015 transitions. [2020-01-16 18:36:28,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:28,139 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:28,139 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 18:36:28,139 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 18:36:28,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:28,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1675756306, now seen corresponding path program 355 times [2020-01-16 18:36:28,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:28,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668271196] [2020-01-16 18:36:28,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:28,609 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:36:28,734 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:28,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668271196] [2020-01-16 18:36:28,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:28,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:28,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924291784] [2020-01-16 18:36:28,740 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:28,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:28,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:28,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:28,741 INFO L87 Difference]: Start difference. First operand 1565 states and 7015 transitions. Second operand 11 states. [2020-01-16 18:36:28,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:28,891 INFO L93 Difference]: Finished difference Result 2948 states and 11704 transitions. [2020-01-16 18:36:28,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:28,892 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:28,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:28,899 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:36:28,899 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:36:28,899 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 18:36:28,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:36:28,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1575. [2020-01-16 18:36:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:36:28,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7041 transitions. [2020-01-16 18:36:28,967 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7041 transitions. Word has length 28 [2020-01-16 18:36:28,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:28,967 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7041 transitions. [2020-01-16 18:36:28,967 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:28,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7041 transitions. [2020-01-16 18:36:28,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:28,969 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:28,969 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:28,969 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 18:36:28,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:28,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1303053686, now seen corresponding path program 356 times [2020-01-16 18:36:28,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:28,970 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448246747] [2020-01-16 18:36:28,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:29,551 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:29,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448246747] [2020-01-16 18:36:29,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:29,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:29,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77954853] [2020-01-16 18:36:29,558 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:29,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:29,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:29,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:29,559 INFO L87 Difference]: Start difference. First operand 1575 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:36:29,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:29,764 INFO L93 Difference]: Finished difference Result 2942 states and 11688 transitions. [2020-01-16 18:36:29,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:29,764 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:29,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:29,772 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 18:36:29,772 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 18:36:29,772 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 18:36:29,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 18:36:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1570. [2020-01-16 18:36:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:36:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7028 transitions. [2020-01-16 18:36:29,841 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7028 transitions. Word has length 28 [2020-01-16 18:36:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:29,841 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7028 transitions. [2020-01-16 18:36:29,841 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7028 transitions. [2020-01-16 18:36:29,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:29,844 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:29,844 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 18:36:29,844 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 18:36:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:29,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1546125610, now seen corresponding path program 357 times [2020-01-16 18:36:29,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:29,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642425402] [2020-01-16 18:36:29,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:30,318 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:36:30,446 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:30,453 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 18:36:30,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642425402] [2020-01-16 18:36:30,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:30,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:30,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267166185] [2020-01-16 18:36:30,454 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:30,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:30,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:30,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:30,454 INFO L87 Difference]: Start difference. First operand 1570 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:36:30,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:30,627 INFO L93 Difference]: Finished difference Result 2954 states and 11714 transitions. [2020-01-16 18:36:30,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:30,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:30,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:30,635 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 18:36:30,635 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:36:30,635 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 18:36:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:36:30,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1578. [2020-01-16 18:36:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:36:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7042 transitions. [2020-01-16 18:36:30,702 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7042 transitions. Word has length 28 [2020-01-16 18:36:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:30,702 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7042 transitions. [2020-01-16 18:36:30,702 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:30,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7042 transitions. [2020-01-16 18:36:30,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:30,704 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:30,704 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 18:36:30,704 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 18:36:30,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:30,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1719373302, now seen corresponding path program 358 times [2020-01-16 18:36:30,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:30,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161435568] [2020-01-16 18:36:30,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:31,299 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:31,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161435568] [2020-01-16 18:36:31,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:31,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:31,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648511406] [2020-01-16 18:36:31,307 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:31,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:31,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:31,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:31,307 INFO L87 Difference]: Start difference. First operand 1578 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:36:31,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:31,547 INFO L93 Difference]: Finished difference Result 2951 states and 11701 transitions. [2020-01-16 18:36:31,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:31,547 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:31,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:31,555 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:36:31,555 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:36:31,555 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 18:36:31,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:36:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1570. [2020-01-16 18:36:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:36:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7023 transitions. [2020-01-16 18:36:31,621 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7023 transitions. Word has length 28 [2020-01-16 18:36:31,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:31,621 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7023 transitions. [2020-01-16 18:36:31,621 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:31,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7023 transitions. [2020-01-16 18:36:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:31,623 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:31,623 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:31,623 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 18:36:31,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:31,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1916202454, now seen corresponding path program 359 times [2020-01-16 18:36:31,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:31,624 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250591207] [2020-01-16 18:36:31,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:32,099 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:36:32,225 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:32,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250591207] [2020-01-16 18:36:32,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:32,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:32,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413751423] [2020-01-16 18:36:32,232 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:32,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:32,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:32,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:32,232 INFO L87 Difference]: Start difference. First operand 1570 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:36:32,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:32,429 INFO L93 Difference]: Finished difference Result 2938 states and 11676 transitions. [2020-01-16 18:36:32,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:32,429 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:32,436 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 18:36:32,436 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:36:32,437 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 18:36:32,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:36:32,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1574. [2020-01-16 18:36:32,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:36:32,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7030 transitions. [2020-01-16 18:36:32,502 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7030 transitions. Word has length 28 [2020-01-16 18:36:32,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:32,502 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7030 transitions. [2020-01-16 18:36:32,502 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:32,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7030 transitions. [2020-01-16 18:36:32,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:32,505 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:32,505 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:32,505 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 18:36:32,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:32,505 INFO L82 PathProgramCache]: Analyzing trace with hash -426797458, now seen corresponding path program 360 times [2020-01-16 18:36:32,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:32,505 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751788971] [2020-01-16 18:36:32,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:33,099 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:36:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:33,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751788971] [2020-01-16 18:36:33,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:33,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:33,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870980277] [2020-01-16 18:36:33,107 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:33,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:33,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:33,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:33,108 INFO L87 Difference]: Start difference. First operand 1574 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:36:33,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:33,342 INFO L93 Difference]: Finished difference Result 2941 states and 11678 transitions. [2020-01-16 18:36:33,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:33,342 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:33,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:33,349 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:36:33,350 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 18:36:33,350 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 18:36:33,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 18:36:33,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1555. [2020-01-16 18:36:33,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 18:36:33,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6992 transitions. [2020-01-16 18:36:33,439 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6992 transitions. Word has length 28 [2020-01-16 18:36:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:33,439 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 6992 transitions. [2020-01-16 18:36:33,439 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6992 transitions. [2020-01-16 18:36:33,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:33,441 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:33,441 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 18:36:33,441 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 18:36:33,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:33,442 INFO L82 PathProgramCache]: Analyzing trace with hash 313455144, now seen corresponding path program 361 times [2020-01-16 18:36:33,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:33,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921725752] [2020-01-16 18:36:33,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:33,920 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:36:34,044 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:36:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:34,051 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921725752] [2020-01-16 18:36:34,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:34,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:34,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484444938] [2020-01-16 18:36:34,051 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:34,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:34,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:34,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:34,052 INFO L87 Difference]: Start difference. First operand 1555 states and 6992 transitions. Second operand 11 states. [2020-01-16 18:36:34,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:34,281 INFO L93 Difference]: Finished difference Result 2905 states and 11627 transitions. [2020-01-16 18:36:34,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:34,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:34,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:34,288 INFO L225 Difference]: With dead ends: 2905 [2020-01-16 18:36:34,288 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:36:34,288 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 18:36:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:36:34,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1573. [2020-01-16 18:36:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:36:34,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7062 transitions. [2020-01-16 18:36:34,356 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7062 transitions. Word has length 28 [2020-01-16 18:36:34,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:34,356 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7062 transitions. [2020-01-16 18:36:34,356 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:34,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7062 transitions. [2020-01-16 18:36:34,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:34,358 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:34,358 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 18:36:34,358 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 18:36:34,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:34,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1058157642, now seen corresponding path program 362 times [2020-01-16 18:36:34,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:34,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034963399] [2020-01-16 18:36:34,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:34,945 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:36:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:34,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034963399] [2020-01-16 18:36:34,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:34,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:34,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366723739] [2020-01-16 18:36:34,952 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:34,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:34,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:34,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:34,953 INFO L87 Difference]: Start difference. First operand 1573 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:36:35,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:35,186 INFO L93 Difference]: Finished difference Result 2906 states and 11624 transitions. [2020-01-16 18:36:35,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:35,186 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:35,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:35,194 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:36:35,194 INFO L226 Difference]: Without dead ends: 2885 [2020-01-16 18:36:35,194 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:36:35,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-01-16 18:36:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1568. [2020-01-16 18:36:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:36:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7048 transitions. [2020-01-16 18:36:35,260 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7048 transitions. Word has length 28 [2020-01-16 18:36:35,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:35,260 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7048 transitions. [2020-01-16 18:36:35,260 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7048 transitions. [2020-01-16 18:36:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:35,262 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:35,262 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 18:36:35,262 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 18:36:35,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:35,262 INFO L82 PathProgramCache]: Analyzing trace with hash -759630236, now seen corresponding path program 363 times [2020-01-16 18:36:35,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:35,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928664983] [2020-01-16 18:36:35,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:35,840 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:36:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:35,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928664983] [2020-01-16 18:36:35,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:35,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:35,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696208084] [2020-01-16 18:36:35,847 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:35,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:35,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:35,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:35,847 INFO L87 Difference]: Start difference. First operand 1568 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:36:36,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:36,096 INFO L93 Difference]: Finished difference Result 2907 states and 11626 transitions. [2020-01-16 18:36:36,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:36,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:36,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:36,104 INFO L225 Difference]: With dead ends: 2907 [2020-01-16 18:36:36,104 INFO L226 Difference]: Without dead ends: 2892 [2020-01-16 18:36:36,104 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 18:36:36,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-01-16 18:36:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 1573. [2020-01-16 18:36:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:36:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7057 transitions. [2020-01-16 18:36:36,171 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7057 transitions. Word has length 28 [2020-01-16 18:36:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:36,171 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7057 transitions. [2020-01-16 18:36:36,171 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7057 transitions. [2020-01-16 18:36:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:36,174 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:36,174 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 18:36:36,174 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 18:36:36,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:36,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1474477258, now seen corresponding path program 364 times [2020-01-16 18:36:36,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:36,174 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773212819] [2020-01-16 18:36:36,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:36,627 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:36:36,755 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:36:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:36,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773212819] [2020-01-16 18:36:36,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:36,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:36,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902934231] [2020-01-16 18:36:36,762 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:36,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:36,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:36,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:36,763 INFO L87 Difference]: Start difference. First operand 1573 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:36:37,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:37,007 INFO L93 Difference]: Finished difference Result 2910 states and 11627 transitions. [2020-01-16 18:36:37,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:37,008 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:37,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:37,014 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:36:37,014 INFO L226 Difference]: Without dead ends: 2887 [2020-01-16 18:36:37,015 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 18:36:37,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-01-16 18:36:37,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1568. [2020-01-16 18:36:37,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:36:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7043 transitions. [2020-01-16 18:36:37,086 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7043 transitions. Word has length 28 [2020-01-16 18:36:37,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:37,086 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7043 transitions. [2020-01-16 18:36:37,086 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:37,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7043 transitions. [2020-01-16 18:36:37,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:37,088 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:37,088 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 18:36:37,088 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 18:36:37,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:37,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1596013220, now seen corresponding path program 365 times [2020-01-16 18:36:37,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:37,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830252031] [2020-01-16 18:36:37,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:37,551 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:36:37,681 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:36:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:37,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830252031] [2020-01-16 18:36:37,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:37,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:37,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885831397] [2020-01-16 18:36:37,689 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:37,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:37,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:37,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:37,690 INFO L87 Difference]: Start difference. First operand 1568 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:36:37,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:37,951 INFO L93 Difference]: Finished difference Result 2910 states and 11628 transitions. [2020-01-16 18:36:37,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:37,951 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:37,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:37,959 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:36:37,959 INFO L226 Difference]: Without dead ends: 2894 [2020-01-16 18:36:37,959 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 18:36:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-01-16 18:36:38,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1574. [2020-01-16 18:36:38,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:36:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7054 transitions. [2020-01-16 18:36:38,024 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7054 transitions. Word has length 28 [2020-01-16 18:36:38,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:38,024 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7054 transitions. [2020-01-16 18:36:38,024 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:38,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7054 transitions. [2020-01-16 18:36:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:38,027 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:38,027 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:38,027 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 18:36:38,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:38,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1209549080, now seen corresponding path program 366 times [2020-01-16 18:36:38,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:38,027 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430095540] [2020-01-16 18:36:38,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:38,608 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:36:38,615 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 18:36:38,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430095540] [2020-01-16 18:36:38,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:38,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:38,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850274858] [2020-01-16 18:36:38,616 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:38,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:38,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:38,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:38,616 INFO L87 Difference]: Start difference. First operand 1574 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:36:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:38,831 INFO L93 Difference]: Finished difference Result 2912 states and 11626 transitions. [2020-01-16 18:36:38,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:38,832 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:38,839 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:36:38,839 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 18:36:38,839 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 18:36:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 18:36:38,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1563. [2020-01-16 18:36:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:36:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7030 transitions. [2020-01-16 18:36:38,904 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7030 transitions. Word has length 28 [2020-01-16 18:36:38,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:38,904 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7030 transitions. [2020-01-16 18:36:38,905 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:38,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7030 transitions. [2020-01-16 18:36:38,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:38,907 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:38,907 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 18:36:38,907 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 18:36:38,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:38,907 INFO L82 PathProgramCache]: Analyzing trace with hash -192891122, now seen corresponding path program 367 times [2020-01-16 18:36:38,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:38,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416819416] [2020-01-16 18:36:38,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:39,395 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:36:39,518 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:36:39,525 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 18:36:39,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416819416] [2020-01-16 18:36:39,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:39,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:39,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616770449] [2020-01-16 18:36:39,526 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:39,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:39,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:39,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:39,526 INFO L87 Difference]: Start difference. First operand 1563 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:36:39,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:39,726 INFO L93 Difference]: Finished difference Result 2897 states and 11602 transitions. [2020-01-16 18:36:39,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:39,726 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:39,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:39,733 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 18:36:39,733 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 18:36:39,733 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 18:36:39,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 18:36:39,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1572. [2020-01-16 18:36:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:36:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7054 transitions. [2020-01-16 18:36:39,799 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7054 transitions. Word has length 28 [2020-01-16 18:36:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:39,799 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7054 transitions. [2020-01-16 18:36:39,799 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:39,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7054 transitions. [2020-01-16 18:36:39,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:39,801 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:39,801 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:39,802 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 18:36:39,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:39,802 INFO L82 PathProgramCache]: Analyzing trace with hash 551811376, now seen corresponding path program 368 times [2020-01-16 18:36:39,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:39,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298537972] [2020-01-16 18:36:39,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:40,280 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:36:40,406 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:36:40,413 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 18:36:40,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298537972] [2020-01-16 18:36:40,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:40,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:40,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549282945] [2020-01-16 18:36:40,414 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:40,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:40,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:40,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:40,415 INFO L87 Difference]: Start difference. First operand 1572 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:36:40,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:40,651 INFO L93 Difference]: Finished difference Result 2898 states and 11599 transitions. [2020-01-16 18:36:40,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:40,651 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:40,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:40,658 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:36:40,658 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 18:36:40,658 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 18:36:40,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 18:36:40,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1567. [2020-01-16 18:36:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:36:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7041 transitions. [2020-01-16 18:36:40,725 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7041 transitions. Word has length 28 [2020-01-16 18:36:40,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:40,725 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7041 transitions. [2020-01-16 18:36:40,725 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:40,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7041 transitions. [2020-01-16 18:36:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:40,728 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:40,728 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 18:36:40,728 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 18:36:40,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:40,728 INFO L82 PathProgramCache]: Analyzing trace with hash -728120924, now seen corresponding path program 369 times [2020-01-16 18:36:40,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:40,728 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726970536] [2020-01-16 18:36:40,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:41,324 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:36:41,330 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 18:36:41,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726970536] [2020-01-16 18:36:41,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:41,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:41,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246838380] [2020-01-16 18:36:41,331 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:41,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:41,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:41,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:41,331 INFO L87 Difference]: Start difference. First operand 1567 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:36:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:41,573 INFO L93 Difference]: Finished difference Result 2894 states and 11591 transitions. [2020-01-16 18:36:41,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:41,573 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:41,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:41,581 INFO L225 Difference]: With dead ends: 2894 [2020-01-16 18:36:41,581 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 18:36:41,581 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 18:36:41,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 18:36:41,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1571. [2020-01-16 18:36:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:36:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7048 transitions. [2020-01-16 18:36:41,648 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7048 transitions. Word has length 28 [2020-01-16 18:36:41,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:41,648 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7048 transitions. [2020-01-16 18:36:41,648 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7048 transitions. [2020-01-16 18:36:41,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:41,650 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:41,650 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 18:36:41,651 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 18:36:41,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:41,651 INFO L82 PathProgramCache]: Analyzing trace with hash -554873232, now seen corresponding path program 370 times [2020-01-16 18:36:41,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:41,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251214600] [2020-01-16 18:36:41,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:42,247 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:36:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:42,254 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251214600] [2020-01-16 18:36:42,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:42,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:42,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807412463] [2020-01-16 18:36:42,254 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:42,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:42,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:42,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:42,255 INFO L87 Difference]: Start difference. First operand 1571 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:36:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:42,493 INFO L93 Difference]: Finished difference Result 2893 states and 11585 transitions. [2020-01-16 18:36:42,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:42,493 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:42,499 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 18:36:42,500 INFO L226 Difference]: Without dead ends: 2875 [2020-01-16 18:36:42,500 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:36:42,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2020-01-16 18:36:42,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1567. [2020-01-16 18:36:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:36:42,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7037 transitions. [2020-01-16 18:36:42,565 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7037 transitions. Word has length 28 [2020-01-16 18:36:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:42,565 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7037 transitions. [2020-01-16 18:36:42,565 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:42,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7037 transitions. [2020-01-16 18:36:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:42,567 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:42,567 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:42,568 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 18:36:42,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:42,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1627522532, now seen corresponding path program 371 times [2020-01-16 18:36:42,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:42,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546275753] [2020-01-16 18:36:42,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:43,028 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:36:43,160 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:36:43,166 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 18:36:43,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546275753] [2020-01-16 18:36:43,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:43,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:43,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579105539] [2020-01-16 18:36:43,167 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:43,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:43,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:43,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:43,167 INFO L87 Difference]: Start difference. First operand 1567 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:36:43,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:43,398 INFO L93 Difference]: Finished difference Result 2896 states and 11591 transitions. [2020-01-16 18:36:43,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:43,399 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:43,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:43,406 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 18:36:43,406 INFO L226 Difference]: Without dead ends: 2880 [2020-01-16 18:36:43,406 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 18:36:43,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2020-01-16 18:36:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1571. [2020-01-16 18:36:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:36:43,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7044 transitions. [2020-01-16 18:36:43,474 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7044 transitions. Word has length 28 [2020-01-16 18:36:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:43,474 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7044 transitions. [2020-01-16 18:36:43,474 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7044 transitions. [2020-01-16 18:36:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:43,476 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:43,476 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 18:36:43,476 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 18:36:43,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:43,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1056067726, now seen corresponding path program 372 times [2020-01-16 18:36:43,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:43,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138221256] [2020-01-16 18:36:43,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:43,943 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:36:44,071 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:36:44,077 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 18:36:44,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138221256] [2020-01-16 18:36:44,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:44,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:44,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127886213] [2020-01-16 18:36:44,078 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:44,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:44,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:44,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:44,078 INFO L87 Difference]: Start difference. First operand 1571 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:36:44,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:44,285 INFO L93 Difference]: Finished difference Result 2894 states and 11583 transitions. [2020-01-16 18:36:44,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:44,286 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:44,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:44,293 INFO L225 Difference]: With dead ends: 2894 [2020-01-16 18:36:44,293 INFO L226 Difference]: Without dead ends: 2872 [2020-01-16 18:36:44,293 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 18:36:44,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-01-16 18:36:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1563. [2020-01-16 18:36:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:36:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7026 transitions. [2020-01-16 18:36:44,361 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7026 transitions. Word has length 28 [2020-01-16 18:36:44,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:44,361 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7026 transitions. [2020-01-16 18:36:44,361 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:44,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7026 transitions. [2020-01-16 18:36:44,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:44,363 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:44,363 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 18:36:44,363 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 18:36:44,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:44,364 INFO L82 PathProgramCache]: Analyzing trace with hash -171884914, now seen corresponding path program 373 times [2020-01-16 18:36:44,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:44,364 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174399598] [2020-01-16 18:36:44,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:44,961 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:36:44,968 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 18:36:44,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174399598] [2020-01-16 18:36:44,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:44,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:44,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645854824] [2020-01-16 18:36:44,969 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:44,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:44,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:44,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:44,969 INFO L87 Difference]: Start difference. First operand 1563 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:36:45,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:45,183 INFO L93 Difference]: Finished difference Result 2901 states and 11606 transitions. [2020-01-16 18:36:45,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:45,183 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:45,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:45,191 INFO L225 Difference]: With dead ends: 2901 [2020-01-16 18:36:45,191 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 18:36:45,192 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 18:36:45,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 18:36:45,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1572. [2020-01-16 18:36:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:36:45,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7050 transitions. [2020-01-16 18:36:45,259 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7050 transitions. Word has length 28 [2020-01-16 18:36:45,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:45,259 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7050 transitions. [2020-01-16 18:36:45,259 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:45,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7050 transitions. [2020-01-16 18:36:45,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:45,261 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:45,262 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 18:36:45,262 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 18:36:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:45,262 INFO L82 PathProgramCache]: Analyzing trace with hash 2062222580, now seen corresponding path program 374 times [2020-01-16 18:36:45,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:45,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366688344] [2020-01-16 18:36:45,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:45,839 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:36:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:45,846 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366688344] [2020-01-16 18:36:45,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:45,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:45,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179435761] [2020-01-16 18:36:45,847 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:45,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:45,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:45,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:45,847 INFO L87 Difference]: Start difference. First operand 1572 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:36:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:46,076 INFO L93 Difference]: Finished difference Result 2904 states and 11607 transitions. [2020-01-16 18:36:46,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:46,076 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:46,083 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:36:46,083 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:36:46,083 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 18:36:46,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:36:46,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1567. [2020-01-16 18:36:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:36:46,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7037 transitions. [2020-01-16 18:36:46,148 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7037 transitions. Word has length 28 [2020-01-16 18:36:46,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:46,149 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7037 transitions. [2020-01-16 18:36:46,149 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:46,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7037 transitions. [2020-01-16 18:36:46,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:46,151 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:46,151 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:46,151 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 18:36:46,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:46,151 INFO L82 PathProgramCache]: Analyzing trace with hash 365970664, now seen corresponding path program 375 times [2020-01-16 18:36:46,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:46,152 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064426188] [2020-01-16 18:36:46,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:46,621 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:36:46,750 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:36:46,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:46,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064426188] [2020-01-16 18:36:46,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:46,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:46,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329815951] [2020-01-16 18:36:46,757 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:46,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:46,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:46,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:46,758 INFO L87 Difference]: Start difference. First operand 1567 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:36:46,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:46,972 INFO L93 Difference]: Finished difference Result 2896 states and 11591 transitions. [2020-01-16 18:36:46,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:46,972 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:46,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:46,980 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 18:36:46,980 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:36:46,980 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 18:36:47,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:36:47,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1571. [2020-01-16 18:36:47,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:36:47,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7044 transitions. [2020-01-16 18:36:47,047 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7044 transitions. Word has length 28 [2020-01-16 18:36:47,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:47,047 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7044 transitions. [2020-01-16 18:36:47,047 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7044 transitions. [2020-01-16 18:36:47,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:47,051 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:47,051 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 18:36:47,051 INFO L426 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:36:47,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:47,051 INFO L82 PathProgramCache]: Analyzing trace with hash 539218356, now seen corresponding path program 376 times [2020-01-16 18:36:47,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:47,052 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765191882] [2020-01-16 18:36:47,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:47,513 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:36:47,636 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:36:47,642 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 18:36:47,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765191882] [2020-01-16 18:36:47,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:47,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:47,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057066269] [2020-01-16 18:36:47,643 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:47,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:47,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:47,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:47,644 INFO L87 Difference]: Start difference. First operand 1571 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:36:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:47,855 INFO L93 Difference]: Finished difference Result 2895 states and 11585 transitions. [2020-01-16 18:36:47,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:47,857 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:47,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:47,865 INFO L225 Difference]: With dead ends: 2895 [2020-01-16 18:36:47,865 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 18:36:47,865 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 18:36:47,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 18:36:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1567. [2020-01-16 18:36:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:36:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7033 transitions. [2020-01-16 18:36:47,935 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7033 transitions. Word has length 28 [2020-01-16 18:36:47,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:47,935 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7033 transitions. [2020-01-16 18:36:47,935 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7033 transitions. [2020-01-16 18:36:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:47,938 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:47,938 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 18:36:47,938 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 18:36:47,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:47,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1157033560, now seen corresponding path program 377 times [2020-01-16 18:36:47,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:47,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93737365] [2020-01-16 18:36:47,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:48,519 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:36:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:48,526 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93737365] [2020-01-16 18:36:48,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:48,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:48,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144694704] [2020-01-16 18:36:48,527 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:48,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:48,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:48,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:48,527 INFO L87 Difference]: Start difference. First operand 1567 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:36:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:48,758 INFO L93 Difference]: Finished difference Result 2902 states and 11599 transitions. [2020-01-16 18:36:48,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:48,759 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:48,766 INFO L225 Difference]: With dead ends: 2902 [2020-01-16 18:36:48,766 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 18:36:48,766 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 18:36:48,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 18:36:48,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1571. [2020-01-16 18:36:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:36:48,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:36:48,833 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:36:48,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:48,833 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:36:48,833 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:36:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:48,836 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:48,836 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 18:36:48,836 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 18:36:48,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:48,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1077073934, now seen corresponding path program 378 times [2020-01-16 18:36:48,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:48,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790663969] [2020-01-16 18:36:48,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:49,288 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:36:49,419 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:36:49,427 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 18:36:49,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790663969] [2020-01-16 18:36:49,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:49,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:49,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471565576] [2020-01-16 18:36:49,428 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:49,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:49,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:49,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:49,428 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:36:49,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:49,700 INFO L93 Difference]: Finished difference Result 2898 states and 11587 transitions. [2020-01-16 18:36:49,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:49,701 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:49,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:49,708 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:36:49,709 INFO L226 Difference]: Without dead ends: 2876 [2020-01-16 18:36:49,709 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 18:36:49,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2020-01-16 18:36:49,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 1563. [2020-01-16 18:36:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:36:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7022 transitions. [2020-01-16 18:36:49,774 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7022 transitions. Word has length 28 [2020-01-16 18:36:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:49,774 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7022 transitions. [2020-01-16 18:36:49,774 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7022 transitions. [2020-01-16 18:36:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:49,777 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:49,777 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 18:36:49,777 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 18:36:49,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:49,777 INFO L82 PathProgramCache]: Analyzing trace with hash 583320688, now seen corresponding path program 379 times [2020-01-16 18:36:49,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:49,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911878395] [2020-01-16 18:36:49,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:50,236 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:36:50,365 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:36:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:36:50,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911878395] [2020-01-16 18:36:50,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:50,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:50,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649151784] [2020-01-16 18:36:50,372 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:50,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:50,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:50,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:50,372 INFO L87 Difference]: Start difference. First operand 1563 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:36:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:50,665 INFO L93 Difference]: Finished difference Result 2906 states and 11614 transitions. [2020-01-16 18:36:50,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:50,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:50,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:50,673 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:36:50,673 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:36:50,673 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 18:36:50,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:36:50,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1573. [2020-01-16 18:36:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:36:50,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7048 transitions. [2020-01-16 18:36:50,739 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7048 transitions. Word has length 28 [2020-01-16 18:36:50,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:50,739 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7048 transitions. [2020-01-16 18:36:50,739 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:50,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7048 transitions. [2020-01-16 18:36:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:50,741 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:50,741 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 18:36:50,741 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 18:36:50,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:50,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2072725684, now seen corresponding path program 380 times [2020-01-16 18:36:50,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:50,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054358238] [2020-01-16 18:36:50,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:51,341 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:36:51,347 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 18:36:51,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054358238] [2020-01-16 18:36:51,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:51,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:51,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483187753] [2020-01-16 18:36:51,348 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:51,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:51,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:51,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:51,348 INFO L87 Difference]: Start difference. First operand 1573 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:36:51,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:51,634 INFO L93 Difference]: Finished difference Result 2908 states and 11612 transitions. [2020-01-16 18:36:51,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:51,634 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:51,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:51,641 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 18:36:51,641 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 18:36:51,641 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 18:36:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 18:36:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1567. [2020-01-16 18:36:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:36:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7033 transitions. [2020-01-16 18:36:51,707 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7033 transitions. Word has length 28 [2020-01-16 18:36:51,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:51,707 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7033 transitions. [2020-01-16 18:36:51,707 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:51,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7033 transitions. [2020-01-16 18:36:51,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:51,709 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:51,709 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 18:36:51,709 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 18:36:51,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:51,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1121176266, now seen corresponding path program 381 times [2020-01-16 18:36:51,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:51,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975864676] [2020-01-16 18:36:51,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:52,293 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:36:52,300 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 18:36:52,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975864676] [2020-01-16 18:36:52,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:52,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:52,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460631346] [2020-01-16 18:36:52,301 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:52,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:52,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:52,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:52,301 INFO L87 Difference]: Start difference. First operand 1567 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:36:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:52,514 INFO L93 Difference]: Finished difference Result 2900 states and 11596 transitions. [2020-01-16 18:36:52,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:52,515 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:52,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:52,522 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 18:36:52,522 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 18:36:52,522 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 18:36:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 18:36:52,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1571. [2020-01-16 18:36:52,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:36:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:36:52,588 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:36:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:52,588 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:36:52,588 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:52,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:36:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:52,590 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:52,590 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 18:36:52,590 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 18:36:52,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:52,590 INFO L82 PathProgramCache]: Analyzing trace with hash 549721460, now seen corresponding path program 382 times [2020-01-16 18:36:52,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:52,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601594426] [2020-01-16 18:36:52,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:53,176 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:36:53,183 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 18:36:53,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601594426] [2020-01-16 18:36:53,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:53,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:53,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410390212] [2020-01-16 18:36:53,184 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:53,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:53,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:53,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:53,185 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:36:53,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:53,481 INFO L93 Difference]: Finished difference Result 2898 states and 11588 transitions. [2020-01-16 18:36:53,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:53,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:53,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:53,489 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:36:53,489 INFO L226 Difference]: Without dead ends: 2880 [2020-01-16 18:36:53,489 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 18:36:53,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2020-01-16 18:36:53,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1567. [2020-01-16 18:36:53,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:36:53,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 18:36:53,555 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 18:36:53,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:53,555 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 18:36:53,555 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:53,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 18:36:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:53,557 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:53,557 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:53,557 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 18:36:53,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:53,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1537495882, now seen corresponding path program 383 times [2020-01-16 18:36:53,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:53,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556229002] [2020-01-16 18:36:53,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:54,149 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:36:54,156 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 18:36:54,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556229002] [2020-01-16 18:36:54,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:54,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:54,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143857583] [2020-01-16 18:36:54,156 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:54,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:54,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:54,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:54,157 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:36:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:54,449 INFO L93 Difference]: Finished difference Result 2904 states and 11600 transitions. [2020-01-16 18:36:54,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:54,450 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:54,456 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:36:54,457 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 18:36:54,457 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 18:36:54,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 18:36:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1571. [2020-01-16 18:36:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:36:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:36:54,522 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:36:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:54,522 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:36:54,522 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:54,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:36:54,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:54,525 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:54,525 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 18:36:54,525 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 18:36:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:54,525 INFO L82 PathProgramCache]: Analyzing trace with hash -523363920, now seen corresponding path program 384 times [2020-01-16 18:36:54,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:54,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211338626] [2020-01-16 18:36:54,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:54,989 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:36:55,118 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:36:55,125 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 18:36:55,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211338626] [2020-01-16 18:36:55,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:55,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:55,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919084481] [2020-01-16 18:36:55,126 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:55,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:55,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:55,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:55,126 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:36:55,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:55,354 INFO L93 Difference]: Finished difference Result 2900 states and 11588 transitions. [2020-01-16 18:36:55,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:55,355 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:55,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:55,362 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 18:36:55,362 INFO L226 Difference]: Without dead ends: 2874 [2020-01-16 18:36:55,362 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 18:36:55,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-01-16 18:36:55,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 1559. [2020-01-16 18:36:55,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-01-16 18:36:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 7011 transitions. [2020-01-16 18:36:55,427 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 7011 transitions. Word has length 28 [2020-01-16 18:36:55,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:55,428 INFO L478 AbstractCegarLoop]: Abstraction has 1559 states and 7011 transitions. [2020-01-16 18:36:55,428 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:55,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 7011 transitions. [2020-01-16 18:36:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:55,430 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:55,430 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 18:36:55,430 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 18:36:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:55,430 INFO L82 PathProgramCache]: Analyzing trace with hash -129443996, now seen corresponding path program 385 times [2020-01-16 18:36:55,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:55,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926471722] [2020-01-16 18:36:55,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:56,022 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:36:56,029 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 18:36:56,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926471722] [2020-01-16 18:36:56,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:56,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:56,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45496351] [2020-01-16 18:36:56,030 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:56,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:56,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:56,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:56,030 INFO L87 Difference]: Start difference. First operand 1559 states and 7011 transitions. Second operand 11 states. [2020-01-16 18:36:56,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:56,261 INFO L93 Difference]: Finished difference Result 2919 states and 11668 transitions. [2020-01-16 18:36:56,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:56,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:56,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:56,269 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 18:36:56,269 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 18:36:56,269 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 18:36:56,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 18:36:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1574. [2020-01-16 18:36:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:36:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7063 transitions. [2020-01-16 18:36:56,334 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7063 transitions. Word has length 28 [2020-01-16 18:36:56,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:56,335 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7063 transitions. [2020-01-16 18:36:56,335 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:56,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7063 transitions. [2020-01-16 18:36:56,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:56,337 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:56,337 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:36:56,337 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 18:36:56,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:56,337 INFO L82 PathProgramCache]: Analyzing trace with hash 615258502, now seen corresponding path program 386 times [2020-01-16 18:36:56,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:56,337 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776420440] [2020-01-16 18:36:56,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:56,836 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:36:56,966 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:36:56,973 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 18:36:56,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776420440] [2020-01-16 18:36:56,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:56,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:56,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012505887] [2020-01-16 18:36:56,974 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:56,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:56,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:56,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:56,974 INFO L87 Difference]: Start difference. First operand 1574 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:36:57,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:57,206 INFO L93 Difference]: Finished difference Result 2920 states and 11665 transitions. [2020-01-16 18:36:57,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:57,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:57,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:57,213 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 18:36:57,213 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 18:36:57,213 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 18:36:57,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 18:36:57,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1569. [2020-01-16 18:36:57,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:36:57,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7049 transitions. [2020-01-16 18:36:57,279 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7049 transitions. Word has length 28 [2020-01-16 18:36:57,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:57,279 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7049 transitions. [2020-01-16 18:36:57,279 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:57,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7049 transitions. [2020-01-16 18:36:57,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:57,281 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:57,281 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 18:36:57,282 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 18:36:57,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:57,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1202529376, now seen corresponding path program 387 times [2020-01-16 18:36:57,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:57,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930426500] [2020-01-16 18:36:57,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:57,746 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:36:57,872 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:36:57,879 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 18:36:57,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930426500] [2020-01-16 18:36:57,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:57,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:57,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116490626] [2020-01-16 18:36:57,880 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:57,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:57,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:57,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:57,880 INFO L87 Difference]: Start difference. First operand 1569 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:36:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:58,170 INFO L93 Difference]: Finished difference Result 2921 states and 11667 transitions. [2020-01-16 18:36:58,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:58,171 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:58,178 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:36:58,178 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:36:58,178 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 18:36:58,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:36:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1574. [2020-01-16 18:36:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:36:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7058 transitions. [2020-01-16 18:36:58,244 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7058 transitions. Word has length 28 [2020-01-16 18:36:58,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:58,244 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7058 transitions. [2020-01-16 18:36:58,244 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:58,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7058 transitions. [2020-01-16 18:36:58,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:58,246 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:58,246 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 18:36:58,246 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 18:36:58,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:58,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1031578118, now seen corresponding path program 388 times [2020-01-16 18:36:58,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:58,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276289573] [2020-01-16 18:36:58,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:58,831 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:36:58,838 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 18:36:58,838 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276289573] [2020-01-16 18:36:58,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:58,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:58,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515379891] [2020-01-16 18:36:58,839 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:58,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:58,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:58,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:58,839 INFO L87 Difference]: Start difference. First operand 1574 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:36:59,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:59,133 INFO L93 Difference]: Finished difference Result 2924 states and 11668 transitions. [2020-01-16 18:36:59,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:59,133 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:59,140 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:36:59,140 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 18:36:59,140 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 18:36:59,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 18:36:59,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1569. [2020-01-16 18:36:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:36:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7044 transitions. [2020-01-16 18:36:59,205 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7044 transitions. Word has length 28 [2020-01-16 18:36:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:36:59,205 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7044 transitions. [2020-01-16 18:36:59,205 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:36:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7044 transitions. [2020-01-16 18:36:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:36:59,207 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:36:59,207 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 18:36:59,208 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 18:36:59,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:36:59,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1153114080, now seen corresponding path program 389 times [2020-01-16 18:36:59,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:36:59,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690224714] [2020-01-16 18:36:59,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:36:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:36:59,768 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:36:59,774 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 18:36:59,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690224714] [2020-01-16 18:36:59,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:36:59,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:36:59,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494343054] [2020-01-16 18:36:59,775 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:36:59,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:36:59,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:36:59,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:36:59,776 INFO L87 Difference]: Start difference. First operand 1569 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:36:59,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:36:59,966 INFO L93 Difference]: Finished difference Result 2924 states and 11669 transitions. [2020-01-16 18:36:59,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:36:59,967 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:36:59,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:36:59,974 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:36:59,974 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:36:59,975 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 18:37:00,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:37:00,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1575. [2020-01-16 18:37:00,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:37:00,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7055 transitions. [2020-01-16 18:37:00,041 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7055 transitions. Word has length 28 [2020-01-16 18:37:00,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:00,041 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7055 transitions. [2020-01-16 18:37:00,041 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7055 transitions. [2020-01-16 18:37:00,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:00,044 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:00,044 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 18:37:00,044 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 18:37:00,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:00,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1652448220, now seen corresponding path program 390 times [2020-01-16 18:37:00,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:00,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942361685] [2020-01-16 18:37:00,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:00,520 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:00,648 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:00,655 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 18:37:00,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942361685] [2020-01-16 18:37:00,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:00,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:00,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288498771] [2020-01-16 18:37:00,656 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:00,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:00,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:00,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:00,656 INFO L87 Difference]: Start difference. First operand 1575 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:37:00,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:00,852 INFO L93 Difference]: Finished difference Result 2926 states and 11667 transitions. [2020-01-16 18:37:00,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:00,852 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:00,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:00,859 INFO L225 Difference]: With dead ends: 2926 [2020-01-16 18:37:00,859 INFO L226 Difference]: Without dead ends: 2897 [2020-01-16 18:37:00,859 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 18:37:00,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-01-16 18:37:00,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1564. [2020-01-16 18:37:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:37:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7030 transitions. [2020-01-16 18:37:00,924 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7030 transitions. Word has length 28 [2020-01-16 18:37:00,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:00,925 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7030 transitions. [2020-01-16 18:37:00,925 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:00,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7030 transitions. [2020-01-16 18:37:00,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:00,927 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:00,927 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 18:37:00,927 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 18:37:00,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:00,927 INFO L82 PathProgramCache]: Analyzing trace with hash 458301326, now seen corresponding path program 391 times [2020-01-16 18:37:00,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:00,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510622026] [2020-01-16 18:37:00,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:01,415 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:01,543 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 31 [2020-01-16 18:37:01,550 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 18:37:01,550 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510622026] [2020-01-16 18:37:01,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:01,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:01,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001458279] [2020-01-16 18:37:01,551 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:01,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:01,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:01,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:01,551 INFO L87 Difference]: Start difference. First operand 1564 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:37:01,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:01,742 INFO L93 Difference]: Finished difference Result 2918 states and 11661 transitions. [2020-01-16 18:37:01,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:01,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:01,750 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 18:37:01,750 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 18:37:01,750 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 18:37:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 18:37:01,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1574. [2020-01-16 18:37:01,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:37:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7058 transitions. [2020-01-16 18:37:01,816 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7058 transitions. Word has length 28 [2020-01-16 18:37:01,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:01,816 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7058 transitions. [2020-01-16 18:37:01,816 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:01,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7058 transitions. [2020-01-16 18:37:01,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:01,818 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:01,818 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 18:37:01,818 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 18:37:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:01,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1203003824, now seen corresponding path program 392 times [2020-01-16 18:37:01,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:01,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421573298] [2020-01-16 18:37:01,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:02,303 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:37:02,433 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:37:02,440 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 18:37:02,440 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421573298] [2020-01-16 18:37:02,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:02,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:02,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569491754] [2020-01-16 18:37:02,441 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:02,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:02,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:02,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:02,441 INFO L87 Difference]: Start difference. First operand 1574 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:37:02,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:02,633 INFO L93 Difference]: Finished difference Result 2919 states and 11658 transitions. [2020-01-16 18:37:02,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:02,634 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:02,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:02,641 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 18:37:02,641 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 18:37:02,642 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 18:37:02,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 18:37:02,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1569. [2020-01-16 18:37:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:37:02,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7044 transitions. [2020-01-16 18:37:02,732 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7044 transitions. Word has length 28 [2020-01-16 18:37:02,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:02,732 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7044 transitions. [2020-01-16 18:37:02,732 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7044 transitions. [2020-01-16 18:37:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:02,734 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:02,734 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 18:37:02,734 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 18:37:02,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:02,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1150013856, now seen corresponding path program 393 times [2020-01-16 18:37:02,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:02,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078822255] [2020-01-16 18:37:02,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:03,335 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:03,342 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078822255] [2020-01-16 18:37:03,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:03,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:03,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936794565] [2020-01-16 18:37:03,343 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:03,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:03,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:03,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:03,343 INFO L87 Difference]: Start difference. First operand 1569 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:37:03,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:03,540 INFO L93 Difference]: Finished difference Result 2919 states and 11658 transitions. [2020-01-16 18:37:03,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:03,540 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:03,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:03,548 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 18:37:03,548 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 18:37:03,548 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 18:37:03,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 18:37:03,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1574. [2020-01-16 18:37:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:37:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7053 transitions. [2020-01-16 18:37:03,613 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7053 transitions. Word has length 28 [2020-01-16 18:37:03,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:03,613 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7053 transitions. [2020-01-16 18:37:03,613 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:03,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7053 transitions. [2020-01-16 18:37:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:03,615 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:03,616 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 18:37:03,616 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 18:37:03,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:03,616 INFO L82 PathProgramCache]: Analyzing trace with hash 512638832, now seen corresponding path program 394 times [2020-01-16 18:37:03,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:03,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128230695] [2020-01-16 18:37:03,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:04,086 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:37:04,215 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:04,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:04,223 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128230695] [2020-01-16 18:37:04,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:04,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:04,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470707263] [2020-01-16 18:37:04,224 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:04,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:04,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:04,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:04,224 INFO L87 Difference]: Start difference. First operand 1574 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:37:04,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:04,426 INFO L93 Difference]: Finished difference Result 2921 states and 11657 transitions. [2020-01-16 18:37:04,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:04,426 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:04,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:04,434 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:37:04,434 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 18:37:04,434 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 18:37:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 18:37:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1569. [2020-01-16 18:37:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:37:04,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7039 transitions. [2020-01-16 18:37:04,499 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7039 transitions. Word has length 28 [2020-01-16 18:37:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:04,499 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7039 transitions. [2020-01-16 18:37:04,499 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7039 transitions. [2020-01-16 18:37:04,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:04,501 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:04,501 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 18:37:04,502 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 18:37:04,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:04,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1205629600, now seen corresponding path program 395 times [2020-01-16 18:37:04,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:04,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561287840] [2020-01-16 18:37:04,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:05,101 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:37:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:05,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561287840] [2020-01-16 18:37:05,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:05,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:05,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090956349] [2020-01-16 18:37:05,108 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:05,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:05,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:05,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:05,109 INFO L87 Difference]: Start difference. First operand 1569 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:37:05,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:05,296 INFO L93 Difference]: Finished difference Result 2922 states and 11660 transitions. [2020-01-16 18:37:05,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:05,296 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:05,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:05,304 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:37:05,304 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:37:05,305 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 18:37:05,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:37:05,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1575. [2020-01-16 18:37:05,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:37:05,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7050 transitions. [2020-01-16 18:37:05,371 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7050 transitions. Word has length 28 [2020-01-16 18:37:05,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:05,372 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7050 transitions. [2020-01-16 18:37:05,372 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:05,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7050 transitions. [2020-01-16 18:37:05,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:05,374 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:05,374 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 18:37:05,374 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 18:37:05,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:05,374 INFO L82 PathProgramCache]: Analyzing trace with hash 2123579790, now seen corresponding path program 396 times [2020-01-16 18:37:05,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:05,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590905886] [2020-01-16 18:37:05,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:05,977 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:37:05,984 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 18:37:05,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590905886] [2020-01-16 18:37:05,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:05,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:05,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192543323] [2020-01-16 18:37:05,985 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:05,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:05,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:05,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:05,985 INFO L87 Difference]: Start difference. First operand 1575 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:37:06,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:06,205 INFO L93 Difference]: Finished difference Result 2923 states and 11656 transitions. [2020-01-16 18:37:06,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:06,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:06,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:06,213 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:37:06,213 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 18:37:06,213 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 18:37:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 18:37:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1564. [2020-01-16 18:37:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:37:06,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7025 transitions. [2020-01-16 18:37:06,278 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7025 transitions. Word has length 28 [2020-01-16 18:37:06,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:06,278 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7025 transitions. [2020-01-16 18:37:06,279 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7025 transitions. [2020-01-16 18:37:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:06,281 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:06,281 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 18:37:06,281 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 18:37:06,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:06,281 INFO L82 PathProgramCache]: Analyzing trace with hash 479307534, now seen corresponding path program 397 times [2020-01-16 18:37:06,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:06,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146494311] [2020-01-16 18:37:06,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:06,753 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:37:06,881 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:06,887 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 18:37:06,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146494311] [2020-01-16 18:37:06,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:06,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:06,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850994548] [2020-01-16 18:37:06,887 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:06,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:06,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:06,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:06,888 INFO L87 Difference]: Start difference. First operand 1564 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:37:07,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:07,101 INFO L93 Difference]: Finished difference Result 2923 states and 11667 transitions. [2020-01-16 18:37:07,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:07,101 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:07,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:07,108 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:37:07,109 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:37:07,109 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:37:07,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:37:07,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1574. [2020-01-16 18:37:07,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:37:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7053 transitions. [2020-01-16 18:37:07,175 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7053 transitions. Word has length 28 [2020-01-16 18:37:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:07,175 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7053 transitions. [2020-01-16 18:37:07,175 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:07,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7053 transitions. [2020-01-16 18:37:07,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:07,177 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:07,177 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 18:37:07,177 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 18:37:07,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:07,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1581552268, now seen corresponding path program 398 times [2020-01-16 18:37:07,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:07,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074667390] [2020-01-16 18:37:07,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:07,768 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:07,774 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 18:37:07,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074667390] [2020-01-16 18:37:07,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:07,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:07,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018303048] [2020-01-16 18:37:07,775 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:07,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:07,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:07,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:07,776 INFO L87 Difference]: Start difference. First operand 1574 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:37:07,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:07,975 INFO L93 Difference]: Finished difference Result 2926 states and 11668 transitions. [2020-01-16 18:37:07,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:07,976 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:07,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:07,983 INFO L225 Difference]: With dead ends: 2926 [2020-01-16 18:37:07,984 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 18:37:07,984 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 18:37:08,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 18:37:08,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1569. [2020-01-16 18:37:08,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:37:08,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7039 transitions. [2020-01-16 18:37:08,049 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7039 transitions. Word has length 28 [2020-01-16 18:37:08,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:08,050 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7039 transitions. [2020-01-16 18:37:08,050 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7039 transitions. [2020-01-16 18:37:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:08,052 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:08,052 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:08,052 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 18:37:08,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:08,052 INFO L82 PathProgramCache]: Analyzing trace with hash -55922268, now seen corresponding path program 399 times [2020-01-16 18:37:08,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:08,052 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811074739] [2020-01-16 18:37:08,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:08,539 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:08,665 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:08,672 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 18:37:08,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811074739] [2020-01-16 18:37:08,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:08,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:08,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149137090] [2020-01-16 18:37:08,673 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:08,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:08,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:08,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:08,673 INFO L87 Difference]: Start difference. First operand 1569 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:37:08,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:08,881 INFO L93 Difference]: Finished difference Result 2922 states and 11660 transitions. [2020-01-16 18:37:08,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:08,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:08,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:08,889 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:37:08,889 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 18:37:08,889 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 18:37:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 18:37:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1574. [2020-01-16 18:37:08,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:37:08,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7048 transitions. [2020-01-16 18:37:08,955 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7048 transitions. Word has length 28 [2020-01-16 18:37:08,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:08,955 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7048 transitions. [2020-01-16 18:37:08,955 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7048 transitions. [2020-01-16 18:37:08,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:08,957 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:08,958 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 18:37:08,958 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 18:37:08,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:08,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1606730420, now seen corresponding path program 400 times [2020-01-16 18:37:08,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:08,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461936072] [2020-01-16 18:37:08,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:09,546 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:09,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461936072] [2020-01-16 18:37:09,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:09,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:09,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257441536] [2020-01-16 18:37:09,553 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:09,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:09,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:09,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:09,554 INFO L87 Difference]: Start difference. First operand 1574 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:37:09,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:09,755 INFO L93 Difference]: Finished difference Result 2924 states and 11659 transitions. [2020-01-16 18:37:09,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:09,756 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:09,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:09,763 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:37:09,763 INFO L226 Difference]: Without dead ends: 2902 [2020-01-16 18:37:09,763 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 18:37:09,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2020-01-16 18:37:09,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1569. [2020-01-16 18:37:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:37:09,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7034 transitions. [2020-01-16 18:37:09,830 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7034 transitions. Word has length 28 [2020-01-16 18:37:09,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:09,831 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7034 transitions. [2020-01-16 18:37:09,831 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:09,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7034 transitions. [2020-01-16 18:37:09,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:09,833 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:09,833 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:09,833 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 18:37:09,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:09,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1578926492, now seen corresponding path program 401 times [2020-01-16 18:37:09,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:09,834 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656811311] [2020-01-16 18:37:09,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:10,424 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:10,431 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656811311] [2020-01-16 18:37:10,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:10,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:10,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037964065] [2020-01-16 18:37:10,432 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:10,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:10,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:10,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:10,432 INFO L87 Difference]: Start difference. First operand 1569 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:37:10,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:10,669 INFO L93 Difference]: Finished difference Result 2930 states and 11673 transitions. [2020-01-16 18:37:10,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:10,670 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:10,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:10,677 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 18:37:10,677 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 18:37:10,678 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:37:10,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 18:37:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1576. [2020-01-16 18:37:10,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:37:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7047 transitions. [2020-01-16 18:37:10,744 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7047 transitions. Word has length 28 [2020-01-16 18:37:10,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:10,744 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7047 transitions. [2020-01-16 18:37:10,744 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:10,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7047 transitions. [2020-01-16 18:37:10,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:10,747 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:10,747 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 18:37:10,747 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 18:37:10,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:10,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2144585998, now seen corresponding path program 402 times [2020-01-16 18:37:10,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:10,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295595051] [2020-01-16 18:37:10,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:11,212 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:37:11,340 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:11,347 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 18:37:11,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295595051] [2020-01-16 18:37:11,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:11,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:11,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788164312] [2020-01-16 18:37:11,347 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:11,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:11,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:11,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:11,348 INFO L87 Difference]: Start difference. First operand 1576 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:37:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:11,554 INFO L93 Difference]: Finished difference Result 2929 states and 11664 transitions. [2020-01-16 18:37:11,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:11,554 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:11,562 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:37:11,562 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:37:11,562 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 18:37:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:37:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1564. [2020-01-16 18:37:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:37:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7020 transitions. [2020-01-16 18:37:11,628 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7020 transitions. Word has length 28 [2020-01-16 18:37:11,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:11,628 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7020 transitions. [2020-01-16 18:37:11,628 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:11,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7020 transitions. [2020-01-16 18:37:11,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:11,630 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:11,630 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:11,630 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 18:37:11,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:11,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1234513136, now seen corresponding path program 403 times [2020-01-16 18:37:11,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:11,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799093595] [2020-01-16 18:37:11,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:12,097 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:12,224 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:12,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799093595] [2020-01-16 18:37:12,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:12,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:12,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21979600] [2020-01-16 18:37:12,232 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:12,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:12,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:12,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:12,232 INFO L87 Difference]: Start difference. First operand 1564 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:37:12,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:12,433 INFO L93 Difference]: Finished difference Result 2930 states and 11681 transitions. [2020-01-16 18:37:12,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:12,434 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:12,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:12,440 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 18:37:12,440 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 18:37:12,441 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:37:12,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 18:37:12,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1576. [2020-01-16 18:37:12,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:37:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7054 transitions. [2020-01-16 18:37:12,506 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7054 transitions. Word has length 28 [2020-01-16 18:37:12,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:12,506 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7054 transitions. [2020-01-16 18:37:12,506 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7054 transitions. [2020-01-16 18:37:12,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:12,508 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:12,509 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 18:37:12,509 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 18:37:12,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:12,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1571049164, now seen corresponding path program 404 times [2020-01-16 18:37:12,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:12,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034585799] [2020-01-16 18:37:12,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:13,095 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:13,102 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 18:37:13,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034585799] [2020-01-16 18:37:13,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:13,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:13,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181554829] [2020-01-16 18:37:13,103 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:13,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:13,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:13,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:13,103 INFO L87 Difference]: Start difference. First operand 1576 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:37:13,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:13,311 INFO L93 Difference]: Finished difference Result 2932 states and 11679 transitions. [2020-01-16 18:37:13,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:13,311 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:13,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:13,319 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 18:37:13,319 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:37:13,319 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:37:13,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:37:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1570. [2020-01-16 18:37:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:37:13,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7037 transitions. [2020-01-16 18:37:13,385 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7037 transitions. Word has length 28 [2020-01-16 18:37:13,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:13,385 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7037 transitions. [2020-01-16 18:37:13,385 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:13,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7037 transitions. [2020-01-16 18:37:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:13,387 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:13,387 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 18:37:13,387 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 18:37:13,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:13,387 INFO L82 PathProgramCache]: Analyzing trace with hash 699283334, now seen corresponding path program 405 times [2020-01-16 18:37:13,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:13,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993784657] [2020-01-16 18:37:13,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:13,980 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:37:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:13,987 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993784657] [2020-01-16 18:37:13,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:13,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:13,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050979552] [2020-01-16 18:37:13,987 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:13,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:13,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:13,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:13,988 INFO L87 Difference]: Start difference. First operand 1570 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:37:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:14,183 INFO L93 Difference]: Finished difference Result 2929 states and 11673 transitions. [2020-01-16 18:37:14,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:14,184 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:14,191 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:37:14,192 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 18:37:14,192 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 18:37:14,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 18:37:14,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1576. [2020-01-16 18:37:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:37:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7048 transitions. [2020-01-16 18:37:14,257 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7048 transitions. Word has length 28 [2020-01-16 18:37:14,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:14,257 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7048 transitions. [2020-01-16 18:37:14,257 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:14,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7048 transitions. [2020-01-16 18:37:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:14,283 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:14,283 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 18:37:14,283 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 18:37:14,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:14,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1617233524, now seen corresponding path program 406 times [2020-01-16 18:37:14,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:14,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145249327] [2020-01-16 18:37:14,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:14,885 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:37:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:14,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145249327] [2020-01-16 18:37:14,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:14,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:14,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599685770] [2020-01-16 18:37:14,892 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:14,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:14,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:14,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:14,893 INFO L87 Difference]: Start difference. First operand 1576 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:37:15,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:15,092 INFO L93 Difference]: Finished difference Result 2930 states and 11669 transitions. [2020-01-16 18:37:15,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:15,093 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:15,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:15,100 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 18:37:15,101 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 18:37:15,101 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 18:37:15,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 18:37:15,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1570. [2020-01-16 18:37:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:37:15,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7031 transitions. [2020-01-16 18:37:15,168 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7031 transitions. Word has length 28 [2020-01-16 18:37:15,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:15,168 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7031 transitions. [2020-01-16 18:37:15,168 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7031 transitions. [2020-01-16 18:37:15,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:15,170 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:15,171 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 18:37:15,171 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 18:37:15,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:15,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1115602950, now seen corresponding path program 407 times [2020-01-16 18:37:15,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:15,171 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947435338] [2020-01-16 18:37:15,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:15,643 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:15,774 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 18:37:15,781 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 18:37:15,781 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947435338] [2020-01-16 18:37:15,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:15,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:15,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150912618] [2020-01-16 18:37:15,781 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:15,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:15,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:15,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:15,782 INFO L87 Difference]: Start difference. First operand 1570 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:37:15,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:15,980 INFO L93 Difference]: Finished difference Result 2934 states and 11678 transitions. [2020-01-16 18:37:15,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:15,980 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:15,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:15,988 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 18:37:15,988 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:37:15,988 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 18:37:16,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:37:16,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1577. [2020-01-16 18:37:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:37:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7044 transitions. [2020-01-16 18:37:16,054 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7044 transitions. Word has length 28 [2020-01-16 18:37:16,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:16,054 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7044 transitions. [2020-01-16 18:37:16,054 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:16,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7044 transitions. [2020-01-16 18:37:16,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:16,056 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:16,056 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 18:37:16,057 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 18:37:16,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:16,057 INFO L82 PathProgramCache]: Analyzing trace with hash 544148144, now seen corresponding path program 408 times [2020-01-16 18:37:16,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:16,057 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107705970] [2020-01-16 18:37:16,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:16,658 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:37:16,665 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 18:37:16,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107705970] [2020-01-16 18:37:16,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:16,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:16,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525181762] [2020-01-16 18:37:16,666 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:16,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:16,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:16,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:16,666 INFO L87 Difference]: Start difference. First operand 1577 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:37:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:16,871 INFO L93 Difference]: Finished difference Result 2933 states and 11669 transitions. [2020-01-16 18:37:16,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:16,872 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:16,879 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:37:16,879 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 18:37:16,879 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:37:16,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 18:37:16,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1559. [2020-01-16 18:37:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-01-16 18:37:16,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 7007 transitions. [2020-01-16 18:37:16,944 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 7007 transitions. Word has length 28 [2020-01-16 18:37:16,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:16,944 INFO L478 AbstractCegarLoop]: Abstraction has 1559 states and 7007 transitions. [2020-01-16 18:37:16,945 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:16,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 7007 transitions. [2020-01-16 18:37:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:16,947 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:16,947 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 18:37:16,947 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 18:37:16,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:16,947 INFO L82 PathProgramCache]: Analyzing trace with hash 847344676, now seen corresponding path program 409 times [2020-01-16 18:37:16,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:16,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693805832] [2020-01-16 18:37:16,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:17,562 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 31 [2020-01-16 18:37:17,569 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 18:37:17,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693805832] [2020-01-16 18:37:17,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:17,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:17,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420141622] [2020-01-16 18:37:17,570 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:17,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:17,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:17,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:17,570 INFO L87 Difference]: Start difference. First operand 1559 states and 7007 transitions. Second operand 11 states. [2020-01-16 18:37:17,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:17,759 INFO L93 Difference]: Finished difference Result 2896 states and 11596 transitions. [2020-01-16 18:37:17,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:17,759 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:17,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:17,767 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 18:37:17,767 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:37:17,767 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 18:37:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:37:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1572. [2020-01-16 18:37:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:37:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7050 transitions. [2020-01-16 18:37:17,834 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7050 transitions. Word has length 28 [2020-01-16 18:37:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:17,834 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7050 transitions. [2020-01-16 18:37:17,834 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:17,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7050 transitions. [2020-01-16 18:37:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:17,837 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:17,837 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:17,837 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 18:37:17,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:17,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1592047174, now seen corresponding path program 410 times [2020-01-16 18:37:17,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:17,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909779651] [2020-01-16 18:37:17,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:18,320 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:37:18,447 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:37:18,454 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 18:37:18,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909779651] [2020-01-16 18:37:18,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:18,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:18,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249303534] [2020-01-16 18:37:18,454 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:18,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:18,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:18,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:18,455 INFO L87 Difference]: Start difference. First operand 1572 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:37:18,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:18,669 INFO L93 Difference]: Finished difference Result 2897 states and 11593 transitions. [2020-01-16 18:37:18,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:18,669 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:18,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:18,676 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 18:37:18,677 INFO L226 Difference]: Without dead ends: 2876 [2020-01-16 18:37:18,677 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 18:37:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2020-01-16 18:37:18,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 1567. [2020-01-16 18:37:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:37:18,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7037 transitions. [2020-01-16 18:37:18,742 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7037 transitions. Word has length 28 [2020-01-16 18:37:18,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:18,742 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7037 transitions. [2020-01-16 18:37:18,742 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:18,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7037 transitions. [2020-01-16 18:37:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:18,745 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:18,745 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:18,745 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 18:37:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:18,745 INFO L82 PathProgramCache]: Analyzing trace with hash 312114874, now seen corresponding path program 411 times [2020-01-16 18:37:18,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:18,745 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395356306] [2020-01-16 18:37:18,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:19,230 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:19,357 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 31 [2020-01-16 18:37:19,364 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 18:37:19,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395356306] [2020-01-16 18:37:19,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:19,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:19,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255928180] [2020-01-16 18:37:19,364 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:19,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:19,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:19,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:19,365 INFO L87 Difference]: Start difference. First operand 1567 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:37:19,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:19,592 INFO L93 Difference]: Finished difference Result 2893 states and 11585 transitions. [2020-01-16 18:37:19,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:19,593 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:19,601 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 18:37:19,601 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 18:37:19,601 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 18:37:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 18:37:19,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1571. [2020-01-16 18:37:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:37:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7044 transitions. [2020-01-16 18:37:19,667 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7044 transitions. Word has length 28 [2020-01-16 18:37:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:19,667 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7044 transitions. [2020-01-16 18:37:19,667 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:19,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7044 transitions. [2020-01-16 18:37:19,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:19,669 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:19,669 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 18:37:19,669 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 18:37:19,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:19,670 INFO L82 PathProgramCache]: Analyzing trace with hash 485362566, now seen corresponding path program 412 times [2020-01-16 18:37:19,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:19,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464112993] [2020-01-16 18:37:19,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:20,303 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:37:20,308 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 18:37:20,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464112993] [2020-01-16 18:37:20,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:20,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:20,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114209954] [2020-01-16 18:37:20,309 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:20,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:20,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:20,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:20,310 INFO L87 Difference]: Start difference. First operand 1571 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:37:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:20,538 INFO L93 Difference]: Finished difference Result 2892 states and 11579 transitions. [2020-01-16 18:37:20,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:20,539 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:20,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:20,546 INFO L225 Difference]: With dead ends: 2892 [2020-01-16 18:37:20,546 INFO L226 Difference]: Without dead ends: 2874 [2020-01-16 18:37:20,546 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 18:37:20,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-01-16 18:37:20,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 1567. [2020-01-16 18:37:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:37:20,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7033 transitions. [2020-01-16 18:37:20,612 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7033 transitions. Word has length 28 [2020-01-16 18:37:20,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:20,612 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7033 transitions. [2020-01-16 18:37:20,612 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7033 transitions. [2020-01-16 18:37:20,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:20,614 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:20,615 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:20,615 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 18:37:20,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:20,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1627208966, now seen corresponding path program 413 times [2020-01-16 18:37:20,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:20,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535039071] [2020-01-16 18:37:20,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:21,081 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:21,207 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:21,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535039071] [2020-01-16 18:37:21,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:21,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:21,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318023505] [2020-01-16 18:37:21,216 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:21,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:21,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:21,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:21,216 INFO L87 Difference]: Start difference. First operand 1567 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:37:21,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:21,411 INFO L93 Difference]: Finished difference Result 2895 states and 11585 transitions. [2020-01-16 18:37:21,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:21,412 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:21,419 INFO L225 Difference]: With dead ends: 2895 [2020-01-16 18:37:21,419 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 18:37:21,419 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 18:37:21,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 18:37:21,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1571. [2020-01-16 18:37:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:37:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:37:21,485 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:37:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:21,485 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:37:21,485 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:37:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:21,487 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:21,487 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:21,487 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 18:37:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:21,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2096303524, now seen corresponding path program 414 times [2020-01-16 18:37:21,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:21,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387717303] [2020-01-16 18:37:21,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:22,083 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:22,090 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 18:37:22,090 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387717303] [2020-01-16 18:37:22,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:22,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:22,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310475063] [2020-01-16 18:37:22,091 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:22,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:22,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:22,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:22,091 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:37:22,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:22,283 INFO L93 Difference]: Finished difference Result 2893 states and 11577 transitions. [2020-01-16 18:37:22,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:22,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:22,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:22,291 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 18:37:22,291 INFO L226 Difference]: Without dead ends: 2871 [2020-01-16 18:37:22,291 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 18:37:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-01-16 18:37:22,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 1563. [2020-01-16 18:37:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:37:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7022 transitions. [2020-01-16 18:37:22,358 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7022 transitions. Word has length 28 [2020-01-16 18:37:22,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:22,358 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7022 transitions. [2020-01-16 18:37:22,358 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7022 transitions. [2020-01-16 18:37:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:22,360 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:22,361 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 18:37:22,361 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 18:37:22,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:22,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1941436264, now seen corresponding path program 415 times [2020-01-16 18:37:22,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:22,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809225650] [2020-01-16 18:37:22,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:22,964 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 31 [2020-01-16 18:37:22,970 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 18:37:22,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809225650] [2020-01-16 18:37:22,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:22,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:22,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667314921] [2020-01-16 18:37:22,970 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:22,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:22,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:22,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:22,971 INFO L87 Difference]: Start difference. First operand 1563 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:37:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:23,164 INFO L93 Difference]: Finished difference Result 2903 states and 11611 transitions. [2020-01-16 18:37:23,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:23,164 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:23,171 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 18:37:23,171 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 18:37:23,171 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 18:37:23,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 18:37:23,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1573. [2020-01-16 18:37:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:37:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7050 transitions. [2020-01-16 18:37:23,239 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7050 transitions. Word has length 28 [2020-01-16 18:37:23,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:23,239 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7050 transitions. [2020-01-16 18:37:23,239 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:23,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7050 transitions. [2020-01-16 18:37:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:23,241 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:23,241 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 18:37:23,241 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 18:37:23,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:23,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1608828534, now seen corresponding path program 416 times [2020-01-16 18:37:23,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:23,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73982841] [2020-01-16 18:37:23,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:23,843 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:37:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:23,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73982841] [2020-01-16 18:37:23,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:23,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:23,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465816673] [2020-01-16 18:37:23,851 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:23,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:23,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:23,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:23,852 INFO L87 Difference]: Start difference. First operand 1573 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:37:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:24,049 INFO L93 Difference]: Finished difference Result 2904 states and 11608 transitions. [2020-01-16 18:37:24,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:24,049 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:24,056 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:37:24,056 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 18:37:24,056 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 18:37:24,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 18:37:24,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1568. [2020-01-16 18:37:24,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:37:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7036 transitions. [2020-01-16 18:37:24,121 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7036 transitions. Word has length 28 [2020-01-16 18:37:24,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:24,121 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7036 transitions. [2020-01-16 18:37:24,122 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:24,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7036 transitions. [2020-01-16 18:37:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:24,124 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:24,124 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:24,124 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 18:37:24,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:24,124 INFO L82 PathProgramCache]: Analyzing trace with hash 333121082, now seen corresponding path program 417 times [2020-01-16 18:37:24,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:24,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607432063] [2020-01-16 18:37:24,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:24,591 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:24,721 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:24,728 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 18:37:24,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607432063] [2020-01-16 18:37:24,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:24,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:24,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265473580] [2020-01-16 18:37:24,728 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:24,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:24,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:24,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:24,729 INFO L87 Difference]: Start difference. First operand 1568 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:37:24,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:24,918 INFO L93 Difference]: Finished difference Result 2904 states and 11608 transitions. [2020-01-16 18:37:24,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:24,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:24,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:24,926 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:37:24,926 INFO L226 Difference]: Without dead ends: 2889 [2020-01-16 18:37:24,926 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 18:37:24,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-01-16 18:37:24,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1573. [2020-01-16 18:37:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:37:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7045 transitions. [2020-01-16 18:37:24,992 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7045 transitions. Word has length 28 [2020-01-16 18:37:24,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:24,992 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7045 transitions. [2020-01-16 18:37:24,992 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7045 transitions. [2020-01-16 18:37:24,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:24,994 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:24,994 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:24,994 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 18:37:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:24,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1995773770, now seen corresponding path program 418 times [2020-01-16 18:37:24,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:24,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574389725] [2020-01-16 18:37:24,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:25,469 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:37:25,596 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:25,603 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 18:37:25,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574389725] [2020-01-16 18:37:25,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:25,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:25,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239008717] [2020-01-16 18:37:25,604 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:25,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:25,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:25,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:25,604 INFO L87 Difference]: Start difference. First operand 1573 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:37:25,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:25,804 INFO L93 Difference]: Finished difference Result 2906 states and 11607 transitions. [2020-01-16 18:37:25,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:25,804 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:25,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:25,811 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:37:25,811 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 18:37:25,811 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 18:37:25,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 18:37:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1568. [2020-01-16 18:37:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:37:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7031 transitions. [2020-01-16 18:37:25,878 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7031 transitions. Word has length 28 [2020-01-16 18:37:25,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:25,878 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7031 transitions. [2020-01-16 18:37:25,878 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7031 transitions. [2020-01-16 18:37:25,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:25,880 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:25,880 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:25,880 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 18:37:25,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:25,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1606202758, now seen corresponding path program 419 times [2020-01-16 18:37:25,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:25,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000623248] [2020-01-16 18:37:25,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:26,501 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:37:26,508 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 18:37:26,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000623248] [2020-01-16 18:37:26,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:26,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:26,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990948262] [2020-01-16 18:37:26,509 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:26,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:26,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:26,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:26,510 INFO L87 Difference]: Start difference. First operand 1568 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:37:26,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:26,751 INFO L93 Difference]: Finished difference Result 2907 states and 11610 transitions. [2020-01-16 18:37:26,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:26,751 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:26,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:26,758 INFO L225 Difference]: With dead ends: 2907 [2020-01-16 18:37:26,759 INFO L226 Difference]: Without dead ends: 2891 [2020-01-16 18:37:26,759 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 18:37:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2020-01-16 18:37:26,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1574. [2020-01-16 18:37:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:37:26,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7042 transitions. [2020-01-16 18:37:26,824 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7042 transitions. Word has length 28 [2020-01-16 18:37:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:26,824 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7042 transitions. [2020-01-16 18:37:26,824 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7042 transitions. [2020-01-16 18:37:26,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:26,827 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:26,827 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:26,827 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 18:37:26,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:26,827 INFO L82 PathProgramCache]: Analyzing trace with hash -688252568, now seen corresponding path program 420 times [2020-01-16 18:37:26,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:26,827 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392617725] [2020-01-16 18:37:26,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:27,302 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:27,429 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:37:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:27,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392617725] [2020-01-16 18:37:27,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:27,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:27,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778335224] [2020-01-16 18:37:27,436 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:27,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:27,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:27,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:27,436 INFO L87 Difference]: Start difference. First operand 1574 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:37:27,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:27,639 INFO L93 Difference]: Finished difference Result 2908 states and 11606 transitions. [2020-01-16 18:37:27,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:27,639 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:27,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:27,646 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 18:37:27,646 INFO L226 Difference]: Without dead ends: 2880 [2020-01-16 18:37:27,646 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 18:37:27,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2020-01-16 18:37:27,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1563. [2020-01-16 18:37:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:37:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7018 transitions. [2020-01-16 18:37:27,711 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7018 transitions. Word has length 28 [2020-01-16 18:37:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:27,711 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7018 transitions. [2020-01-16 18:37:27,711 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7018 transitions. [2020-01-16 18:37:27,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:27,713 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:27,714 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:27,714 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 18:37:27,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:27,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1993951784, now seen corresponding path program 421 times [2020-01-16 18:37:27,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:27,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191872988] [2020-01-16 18:37:27,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:28,308 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:28,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:28,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191872988] [2020-01-16 18:37:28,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:28,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:28,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544078961] [2020-01-16 18:37:28,315 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:28,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:28,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:28,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:28,315 INFO L87 Difference]: Start difference. First operand 1563 states and 7018 transitions. Second operand 11 states. [2020-01-16 18:37:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:28,548 INFO L93 Difference]: Finished difference Result 2894 states and 11583 transitions. [2020-01-16 18:37:28,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:28,548 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:28,554 INFO L225 Difference]: With dead ends: 2894 [2020-01-16 18:37:28,555 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 18:37:28,555 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 18:37:28,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 18:37:28,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1571. [2020-01-16 18:37:28,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:37:28,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:37:28,622 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:37:28,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:28,623 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:37:28,623 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:28,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:37:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:28,625 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:28,625 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 18:37:28,625 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 18:37:28,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:28,625 INFO L82 PathProgramCache]: Analyzing trace with hash -2127767820, now seen corresponding path program 422 times [2020-01-16 18:37:28,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:28,626 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989266079] [2020-01-16 18:37:28,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:29,091 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:37:29,217 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:29,223 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989266079] [2020-01-16 18:37:29,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:29,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:29,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408338763] [2020-01-16 18:37:29,224 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:29,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:29,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:29,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:29,224 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:37:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:29,439 INFO L93 Difference]: Finished difference Result 2893 states and 11577 transitions. [2020-01-16 18:37:29,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:29,439 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:29,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:29,446 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 18:37:29,447 INFO L226 Difference]: Without dead ends: 2875 [2020-01-16 18:37:29,447 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 18:37:29,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2020-01-16 18:37:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1567. [2020-01-16 18:37:29,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:37:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 18:37:29,512 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 18:37:29,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:29,512 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 18:37:29,512 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 18:37:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:29,514 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:29,514 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 18:37:29,514 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 18:37:29,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:29,514 INFO L82 PathProgramCache]: Analyzing trace with hash 920866404, now seen corresponding path program 423 times [2020-01-16 18:37:29,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:29,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146804449] [2020-01-16 18:37:29,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:29,979 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:30,105 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:30,112 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 18:37:30,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146804449] [2020-01-16 18:37:30,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:30,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:30,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967525357] [2020-01-16 18:37:30,112 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:30,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:30,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:30,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:30,113 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:37:30,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:30,320 INFO L93 Difference]: Finished difference Result 2898 states and 11588 transitions. [2020-01-16 18:37:30,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:30,321 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:30,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:30,328 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:37:30,328 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 18:37:30,328 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:37:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 18:37:30,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1572. [2020-01-16 18:37:30,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:37:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7038 transitions. [2020-01-16 18:37:30,395 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7038 transitions. Word has length 28 [2020-01-16 18:37:30,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:30,395 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7038 transitions. [2020-01-16 18:37:30,395 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7038 transitions. [2020-01-16 18:37:30,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:30,397 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:30,397 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 18:37:30,397 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 18:37:30,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:30,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1711448204, now seen corresponding path program 424 times [2020-01-16 18:37:30,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:30,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932723895] [2020-01-16 18:37:30,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:30,865 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:37:30,992 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:30,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932723895] [2020-01-16 18:37:31,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:31,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:31,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576208394] [2020-01-16 18:37:31,000 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:31,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:31,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:31,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:31,000 INFO L87 Difference]: Start difference. First operand 1572 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:37:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:31,236 INFO L93 Difference]: Finished difference Result 2900 states and 11587 transitions. [2020-01-16 18:37:31,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:31,237 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:31,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:31,244 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 18:37:31,244 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 18:37:31,244 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 18:37:31,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 18:37:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1567. [2020-01-16 18:37:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:37:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 18:37:31,309 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 18:37:31,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:31,309 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 18:37:31,309 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:31,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 18:37:31,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:31,311 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:31,311 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 18:37:31,311 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 18:37:31,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:31,312 INFO L82 PathProgramCache]: Analyzing trace with hash -2125142044, now seen corresponding path program 425 times [2020-01-16 18:37:31,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:31,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276720221] [2020-01-16 18:37:31,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:31,907 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:31,913 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 18:37:31,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276720221] [2020-01-16 18:37:31,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:31,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:31,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612703837] [2020-01-16 18:37:31,914 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:31,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:31,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:31,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:31,915 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:37:32,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:32,188 INFO L93 Difference]: Finished difference Result 2895 states and 11577 transitions. [2020-01-16 18:37:32,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:32,188 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:32,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:32,196 INFO L225 Difference]: With dead ends: 2895 [2020-01-16 18:37:32,196 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:37:32,197 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 18:37:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:37:32,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1571. [2020-01-16 18:37:32,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:37:32,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7032 transitions. [2020-01-16 18:37:32,263 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7032 transitions. Word has length 28 [2020-01-16 18:37:32,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:32,264 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7032 transitions. [2020-01-16 18:37:32,264 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:32,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7032 transitions. [2020-01-16 18:37:32,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:32,266 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:32,266 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 18:37:32,266 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 18:37:32,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:32,266 INFO L82 PathProgramCache]: Analyzing trace with hash -635737048, now seen corresponding path program 426 times [2020-01-16 18:37:32,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:32,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005874093] [2020-01-16 18:37:32,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:32,728 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:32,854 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:32,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005874093] [2020-01-16 18:37:32,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:32,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:32,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542187640] [2020-01-16 18:37:32,861 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:32,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:32,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:32,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:32,862 INFO L87 Difference]: Start difference. First operand 1571 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:37:33,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:33,086 INFO L93 Difference]: Finished difference Result 2898 states and 11579 transitions. [2020-01-16 18:37:33,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:33,087 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:33,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:33,094 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:37:33,094 INFO L226 Difference]: Without dead ends: 2873 [2020-01-16 18:37:33,095 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 18:37:33,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-01-16 18:37:33,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1563. [2020-01-16 18:37:33,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:37:33,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7014 transitions. [2020-01-16 18:37:33,160 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7014 transitions. Word has length 28 [2020-01-16 18:37:33,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:33,160 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7014 transitions. [2020-01-16 18:37:33,160 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:33,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7014 transitions. [2020-01-16 18:37:33,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:33,162 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:33,162 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:33,162 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 18:37:33,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:33,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1545809910, now seen corresponding path program 427 times [2020-01-16 18:37:33,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:33,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55028072] [2020-01-16 18:37:33,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:33,635 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:33,765 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:33,772 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55028072] [2020-01-16 18:37:33,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:33,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:33,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192212484] [2020-01-16 18:37:33,773 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:33,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:33,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:33,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:33,773 INFO L87 Difference]: Start difference. First operand 1563 states and 7014 transitions. Second operand 11 states. [2020-01-16 18:37:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:33,988 INFO L93 Difference]: Finished difference Result 2898 states and 11588 transitions. [2020-01-16 18:37:33,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:33,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:33,995 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:37:33,995 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 18:37:33,995 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:37:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 18:37:34,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1571. [2020-01-16 18:37:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:37:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:37:34,061 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:37:34,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:34,062 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:37:34,062 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:34,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:37:34,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:34,064 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:34,064 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 18:37:34,064 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 18:37:34,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:34,064 INFO L82 PathProgramCache]: Analyzing trace with hash -2117264716, now seen corresponding path program 428 times [2020-01-16 18:37:34,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:34,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334874048] [2020-01-16 18:37:34,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:34,656 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:34,662 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 18:37:34,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334874048] [2020-01-16 18:37:34,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:34,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:34,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202408617] [2020-01-16 18:37:34,663 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:34,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:34,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:34,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:34,664 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:37:34,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:34,901 INFO L93 Difference]: Finished difference Result 2896 states and 11580 transitions. [2020-01-16 18:37:34,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:34,902 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:34,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:34,909 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 18:37:34,910 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 18:37:34,910 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 18:37:34,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 18:37:34,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1567. [2020-01-16 18:37:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:37:34,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 18:37:34,976 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 18:37:34,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:34,976 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 18:37:34,976 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:34,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 18:37:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:34,978 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:34,978 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 18:37:34,978 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 18:37:34,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:34,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1676072006, now seen corresponding path program 429 times [2020-01-16 18:37:34,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:34,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691542112] [2020-01-16 18:37:34,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:35,585 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:35,592 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691542112] [2020-01-16 18:37:35,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:35,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:35,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018290118] [2020-01-16 18:37:35,593 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:35,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:35,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:35,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:35,593 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:37:35,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:35,812 INFO L93 Difference]: Finished difference Result 2903 states and 11596 transitions. [2020-01-16 18:37:35,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:35,812 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:35,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:35,820 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 18:37:35,820 INFO L226 Difference]: Without dead ends: 2887 [2020-01-16 18:37:35,820 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 18:37:35,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-01-16 18:37:35,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1573. [2020-01-16 18:37:35,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:37:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7036 transitions. [2020-01-16 18:37:35,885 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7036 transitions. Word has length 28 [2020-01-16 18:37:35,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:35,885 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7036 transitions. [2020-01-16 18:37:35,886 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7036 transitions. [2020-01-16 18:37:35,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:35,888 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:35,888 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:35,888 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 18:37:35,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:35,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1700945100, now seen corresponding path program 430 times [2020-01-16 18:37:35,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:35,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118263285] [2020-01-16 18:37:35,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:36,380 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:37:36,511 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:36,518 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118263285] [2020-01-16 18:37:36,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:36,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:36,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963607966] [2020-01-16 18:37:36,518 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:36,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:36,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:36,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:36,519 INFO L87 Difference]: Start difference. First operand 1573 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:37:36,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:36,728 INFO L93 Difference]: Finished difference Result 2904 states and 11592 transitions. [2020-01-16 18:37:36,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:36,728 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:36,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:36,736 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:37:36,736 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:37:36,736 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 18:37:36,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:37:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1567. [2020-01-16 18:37:36,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:37:36,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7021 transitions. [2020-01-16 18:37:36,801 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7021 transitions. Word has length 28 [2020-01-16 18:37:36,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:36,801 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7021 transitions. [2020-01-16 18:37:36,801 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:36,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7021 transitions. [2020-01-16 18:37:36,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:36,804 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:36,804 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 18:37:36,804 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 18:37:36,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:36,804 INFO L82 PathProgramCache]: Analyzing trace with hash 569387398, now seen corresponding path program 431 times [2020-01-16 18:37:36,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:36,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700849562] [2020-01-16 18:37:36,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:37,276 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:37,407 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:37,414 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 18:37:37,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700849562] [2020-01-16 18:37:37,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:37,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:37,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582556230] [2020-01-16 18:37:37,415 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:37,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:37,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:37,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:37,415 INFO L87 Difference]: Start difference. First operand 1567 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:37:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:37,623 INFO L93 Difference]: Finished difference Result 2897 states and 11578 transitions. [2020-01-16 18:37:37,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:37,623 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:37,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:37,631 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 18:37:37,631 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 18:37:37,631 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 18:37:37,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 18:37:37,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1571. [2020-01-16 18:37:37,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:37:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7028 transitions. [2020-01-16 18:37:37,696 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7028 transitions. Word has length 28 [2020-01-16 18:37:37,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:37,696 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7028 transitions. [2020-01-16 18:37:37,696 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:37,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7028 transitions. [2020-01-16 18:37:37,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:37,698 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:37,698 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:37,698 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 18:37:37,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:37,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2058792394, now seen corresponding path program 432 times [2020-01-16 18:37:37,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:37,698 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177783176] [2020-01-16 18:37:37,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:38,068 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2020-01-16 18:37:38,319 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:38,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177783176] [2020-01-16 18:37:38,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:38,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:38,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500929595] [2020-01-16 18:37:38,327 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:38,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:38,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:38,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:38,327 INFO L87 Difference]: Start difference. First operand 1571 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:37:38,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:38,563 INFO L93 Difference]: Finished difference Result 2900 states and 11580 transitions. [2020-01-16 18:37:38,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:38,564 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:38,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:38,571 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 18:37:38,571 INFO L226 Difference]: Without dead ends: 2871 [2020-01-16 18:37:38,571 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 18:37:38,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-01-16 18:37:38,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 1559. [2020-01-16 18:37:38,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-01-16 18:37:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 7003 transitions. [2020-01-16 18:37:38,636 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 7003 transitions. Word has length 28 [2020-01-16 18:37:38,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:38,636 INFO L478 AbstractCegarLoop]: Abstraction has 1559 states and 7003 transitions. [2020-01-16 18:37:38,636 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 7003 transitions. [2020-01-16 18:37:38,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:38,639 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:38,639 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:38,639 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 18:37:38,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:38,639 INFO L82 PathProgramCache]: Analyzing trace with hash 425451744, now seen corresponding path program 433 times [2020-01-16 18:37:38,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:38,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841800648] [2020-01-16 18:37:38,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:39,218 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:39,225 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 18:37:39,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841800648] [2020-01-16 18:37:39,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:39,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:39,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733368848] [2020-01-16 18:37:39,225 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:39,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:39,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:39,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:39,226 INFO L87 Difference]: Start difference. First operand 1559 states and 7003 transitions. Second operand 11 states. [2020-01-16 18:37:39,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:39,423 INFO L93 Difference]: Finished difference Result 2903 states and 11607 transitions. [2020-01-16 18:37:39,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:39,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:39,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:39,431 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 18:37:39,431 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 18:37:39,431 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 18:37:39,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 18:37:39,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1572. [2020-01-16 18:37:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:37:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7046 transitions. [2020-01-16 18:37:39,496 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7046 transitions. Word has length 28 [2020-01-16 18:37:39,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:39,497 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7046 transitions. [2020-01-16 18:37:39,497 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:39,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7046 transitions. [2020-01-16 18:37:39,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:39,499 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:39,499 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 18:37:39,499 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 18:37:39,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:39,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1635408058, now seen corresponding path program 434 times [2020-01-16 18:37:39,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:39,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726188491] [2020-01-16 18:37:39,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:40,073 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:40,081 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726188491] [2020-01-16 18:37:40,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:40,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:40,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803582173] [2020-01-16 18:37:40,081 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:40,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:40,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:40,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:40,082 INFO L87 Difference]: Start difference. First operand 1572 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:37:40,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:40,270 INFO L93 Difference]: Finished difference Result 2906 states and 11608 transitions. [2020-01-16 18:37:40,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:40,270 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:40,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:40,278 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:37:40,278 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 18:37:40,279 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 18:37:40,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 18:37:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1567. [2020-01-16 18:37:40,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:37:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7033 transitions. [2020-01-16 18:37:40,343 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7033 transitions. Word has length 28 [2020-01-16 18:37:40,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:40,343 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7033 transitions. [2020-01-16 18:37:40,343 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:40,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7033 transitions. [2020-01-16 18:37:40,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:40,346 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:40,346 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 18:37:40,346 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 18:37:40,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:40,346 INFO L82 PathProgramCache]: Analyzing trace with hash 963307322, now seen corresponding path program 435 times [2020-01-16 18:37:40,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:40,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324771590] [2020-01-16 18:37:40,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:40,804 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:37:40,933 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:40,939 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 18:37:40,940 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324771590] [2020-01-16 18:37:40,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:40,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:40,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599209298] [2020-01-16 18:37:40,940 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:40,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:40,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:40,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:40,941 INFO L87 Difference]: Start difference. First operand 1567 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:37:41,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:41,166 INFO L93 Difference]: Finished difference Result 2898 states and 11592 transitions. [2020-01-16 18:37:41,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:41,167 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:41,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:41,173 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:37:41,174 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 18:37:41,174 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 18:37:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 18:37:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1571. [2020-01-16 18:37:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:37:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:37:41,238 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:37:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:41,239 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:37:41,239 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:37:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:41,241 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:41,241 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 18:37:41,241 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 18:37:41,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:41,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1136555014, now seen corresponding path program 436 times [2020-01-16 18:37:41,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:41,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348995710] [2020-01-16 18:37:41,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:41,838 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:37:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:41,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348995710] [2020-01-16 18:37:41,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:41,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:41,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144890832] [2020-01-16 18:37:41,846 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:41,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:41,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:41,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:41,846 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:37:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:42,066 INFO L93 Difference]: Finished difference Result 2897 states and 11586 transitions. [2020-01-16 18:37:42,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:42,067 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:42,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:42,074 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 18:37:42,074 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 18:37:42,075 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 18:37:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 18:37:42,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1567. [2020-01-16 18:37:42,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:37:42,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 18:37:42,140 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 18:37:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:42,140 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 18:37:42,140 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:42,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 18:37:42,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:42,142 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:42,142 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:42,142 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 18:37:42,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:42,142 INFO L82 PathProgramCache]: Analyzing trace with hash -559696902, now seen corresponding path program 437 times [2020-01-16 18:37:42,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:42,143 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283975092] [2020-01-16 18:37:42,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:42,715 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:37:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:42,723 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283975092] [2020-01-16 18:37:42,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:42,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:42,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080029745] [2020-01-16 18:37:42,723 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:42,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:42,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:42,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:42,724 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:37:42,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:42,937 INFO L93 Difference]: Finished difference Result 2904 states and 11600 transitions. [2020-01-16 18:37:42,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:42,938 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:42,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:42,945 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:37:42,945 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 18:37:42,945 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 18:37:42,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 18:37:43,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1571. [2020-01-16 18:37:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:37:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:37:43,011 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:37:43,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:43,011 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:37:43,011 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:43,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:37:43,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:43,013 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:43,013 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 18:37:43,013 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 18:37:43,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:43,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1674410592, now seen corresponding path program 438 times [2020-01-16 18:37:43,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:43,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297643028] [2020-01-16 18:37:43,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:43,604 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:37:43,611 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 18:37:43,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297643028] [2020-01-16 18:37:43,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:43,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:43,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56423463] [2020-01-16 18:37:43,612 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:43,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:43,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:43,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:43,613 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:37:43,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:43,816 INFO L93 Difference]: Finished difference Result 2900 states and 11588 transitions. [2020-01-16 18:37:43,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:43,817 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:43,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:43,824 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 18:37:43,825 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 18:37:43,825 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 18:37:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 18:37:43,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1563. [2020-01-16 18:37:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:37:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7018 transitions. [2020-01-16 18:37:43,890 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7018 transitions. Word has length 28 [2020-01-16 18:37:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:43,890 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7018 transitions. [2020-01-16 18:37:43,890 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7018 transitions. [2020-01-16 18:37:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:43,892 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:43,892 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 18:37:43,892 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 18:37:43,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:43,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1519543332, now seen corresponding path program 439 times [2020-01-16 18:37:43,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:43,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612486550] [2020-01-16 18:37:43,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:44,505 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:44,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612486550] [2020-01-16 18:37:44,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:44,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:44,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198401022] [2020-01-16 18:37:44,513 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:44,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:44,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:44,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:44,513 INFO L87 Difference]: Start difference. First operand 1563 states and 7018 transitions. Second operand 11 states. [2020-01-16 18:37:44,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:44,710 INFO L93 Difference]: Finished difference Result 2911 states and 11625 transitions. [2020-01-16 18:37:44,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:44,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:44,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:44,717 INFO L225 Difference]: With dead ends: 2911 [2020-01-16 18:37:44,718 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 18:37:44,718 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 18:37:44,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 18:37:44,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1573. [2020-01-16 18:37:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:37:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7046 transitions. [2020-01-16 18:37:44,783 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7046 transitions. Word has length 28 [2020-01-16 18:37:44,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:44,783 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7046 transitions. [2020-01-16 18:37:44,783 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:44,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7046 transitions. [2020-01-16 18:37:44,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:44,786 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:44,786 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 18:37:44,786 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 18:37:44,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:44,786 INFO L82 PathProgramCache]: Analyzing trace with hash -541316470, now seen corresponding path program 440 times [2020-01-16 18:37:44,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:44,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926879597] [2020-01-16 18:37:44,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:45,351 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:45,358 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 18:37:45,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926879597] [2020-01-16 18:37:45,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:45,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:45,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214504188] [2020-01-16 18:37:45,359 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:45,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:45,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:45,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:45,359 INFO L87 Difference]: Start difference. First operand 1573 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:37:45,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:45,554 INFO L93 Difference]: Finished difference Result 2914 states and 11626 transitions. [2020-01-16 18:37:45,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:45,554 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:45,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:45,564 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 18:37:45,564 INFO L226 Difference]: Without dead ends: 2891 [2020-01-16 18:37:45,564 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 18:37:45,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2020-01-16 18:37:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1568. [2020-01-16 18:37:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:37:45,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7032 transitions. [2020-01-16 18:37:45,637 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7032 transitions. Word has length 28 [2020-01-16 18:37:45,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:45,638 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7032 transitions. [2020-01-16 18:37:45,638 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7032 transitions. [2020-01-16 18:37:45,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:45,640 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:45,640 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:45,640 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 18:37:45,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:45,640 INFO L82 PathProgramCache]: Analyzing trace with hash 984313530, now seen corresponding path program 441 times [2020-01-16 18:37:45,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:45,641 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392610197] [2020-01-16 18:37:45,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:46,224 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:46,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392610197] [2020-01-16 18:37:46,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:46,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:46,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80360459] [2020-01-16 18:37:46,232 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:46,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:46,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:46,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:46,232 INFO L87 Difference]: Start difference. First operand 1568 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:37:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:46,426 INFO L93 Difference]: Finished difference Result 2910 states and 11618 transitions. [2020-01-16 18:37:46,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:46,427 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:46,434 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:37:46,434 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 18:37:46,435 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 18:37:46,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 18:37:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1573. [2020-01-16 18:37:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:37:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7041 transitions. [2020-01-16 18:37:46,500 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7041 transitions. Word has length 28 [2020-01-16 18:37:46,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:46,500 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7041 transitions. [2020-01-16 18:37:46,500 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:46,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7041 transitions. [2020-01-16 18:37:46,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:46,502 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:46,503 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 18:37:46,503 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 18:37:46,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:46,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1648001078, now seen corresponding path program 442 times [2020-01-16 18:37:46,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:46,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393799827] [2020-01-16 18:37:46,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:46,968 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:37:47,094 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:47,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393799827] [2020-01-16 18:37:47,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:47,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:47,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813996198] [2020-01-16 18:37:47,100 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:47,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:47,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:47,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:47,101 INFO L87 Difference]: Start difference. First operand 1573 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:37:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:47,303 INFO L93 Difference]: Finished difference Result 2912 states and 11617 transitions. [2020-01-16 18:37:47,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:47,303 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:47,310 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:37:47,311 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:37:47,311 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 18:37:47,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:37:47,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1568. [2020-01-16 18:37:47,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:37:47,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7027 transitions. [2020-01-16 18:37:47,376 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7027 transitions. Word has length 28 [2020-01-16 18:37:47,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:47,376 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7027 transitions. [2020-01-16 18:37:47,376 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7027 transitions. [2020-01-16 18:37:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:47,379 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:47,379 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 18:37:47,379 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 18:37:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:47,379 INFO L82 PathProgramCache]: Analyzing trace with hash -538690694, now seen corresponding path program 443 times [2020-01-16 18:37:47,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:47,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479937805] [2020-01-16 18:37:47,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:47,974 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:47,981 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 18:37:47,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479937805] [2020-01-16 18:37:47,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:47,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:47,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387742787] [2020-01-16 18:37:47,982 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:47,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:47,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:47,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:47,982 INFO L87 Difference]: Start difference. First operand 1568 states and 7027 transitions. Second operand 11 states. [2020-01-16 18:37:48,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:48,177 INFO L93 Difference]: Finished difference Result 2918 states and 11631 transitions. [2020-01-16 18:37:48,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:48,178 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:48,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:48,185 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 18:37:48,186 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:37:48,186 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 18:37:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:37:48,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1575. [2020-01-16 18:37:48,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:37:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7040 transitions. [2020-01-16 18:37:48,253 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7040 transitions. Word has length 28 [2020-01-16 18:37:48,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:48,253 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7040 transitions. [2020-01-16 18:37:48,253 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:48,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7040 transitions. [2020-01-16 18:37:48,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:48,255 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:48,255 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:48,256 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 18:37:48,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:48,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1110145500, now seen corresponding path program 444 times [2020-01-16 18:37:48,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:48,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254548669] [2020-01-16 18:37:48,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:48,711 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:37:48,841 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:48,848 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 18:37:48,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254548669] [2020-01-16 18:37:48,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:48,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:48,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488918252] [2020-01-16 18:37:48,849 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:48,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:48,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:48,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:48,849 INFO L87 Difference]: Start difference. First operand 1575 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:37:49,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:49,043 INFO L93 Difference]: Finished difference Result 2917 states and 11622 transitions. [2020-01-16 18:37:49,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:49,043 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:49,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:49,051 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 18:37:49,051 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 18:37:49,051 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:37:49,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 18:37:49,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1563. [2020-01-16 18:37:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:37:49,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7014 transitions. [2020-01-16 18:37:49,119 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7014 transitions. Word has length 28 [2020-01-16 18:37:49,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:49,119 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7014 transitions. [2020-01-16 18:37:49,119 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7014 transitions. [2020-01-16 18:37:49,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:49,121 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:49,121 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 18:37:49,121 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 18:37:49,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:49,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1551052644, now seen corresponding path program 445 times [2020-01-16 18:37:49,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:49,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992717078] [2020-01-16 18:37:49,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:49,713 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:49,719 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 18:37:49,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992717078] [2020-01-16 18:37:49,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:49,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:49,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159557391] [2020-01-16 18:37:49,720 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:49,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:49,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:49,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:49,721 INFO L87 Difference]: Start difference. First operand 1563 states and 7014 transitions. Second operand 11 states. [2020-01-16 18:37:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:49,941 INFO L93 Difference]: Finished difference Result 2897 states and 11586 transitions. [2020-01-16 18:37:49,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:49,941 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:49,969 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 18:37:49,969 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 18:37:49,969 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 18:37:50,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 18:37:50,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1571. [2020-01-16 18:37:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:37:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:37:50,034 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:37:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:50,034 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:37:50,034 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:37:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:50,037 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:50,037 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:50,037 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 18:37:50,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:50,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1724300336, now seen corresponding path program 446 times [2020-01-16 18:37:50,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:50,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738646995] [2020-01-16 18:37:50,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:50,622 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:50,630 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738646995] [2020-01-16 18:37:50,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:50,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:50,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082411365] [2020-01-16 18:37:50,631 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:50,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:50,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:50,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:50,631 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:37:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:50,854 INFO L93 Difference]: Finished difference Result 2896 states and 11580 transitions. [2020-01-16 18:37:50,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:50,855 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:50,861 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 18:37:50,861 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 18:37:50,861 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 18:37:50,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 18:37:50,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1567. [2020-01-16 18:37:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:37:50,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 18:37:50,927 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 18:37:50,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:50,927 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 18:37:50,927 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:50,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 18:37:50,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:50,929 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:50,929 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 18:37:50,929 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 18:37:50,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:50,929 INFO L82 PathProgramCache]: Analyzing trace with hash 477967264, now seen corresponding path program 447 times [2020-01-16 18:37:50,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:50,930 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510904834] [2020-01-16 18:37:50,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:51,516 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:51,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510904834] [2020-01-16 18:37:51,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:51,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:51,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302069148] [2020-01-16 18:37:51,523 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:51,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:51,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:51,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:51,523 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:37:51,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:51,759 INFO L93 Difference]: Finished difference Result 2901 states and 11591 transitions. [2020-01-16 18:37:51,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:51,760 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:51,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:51,767 INFO L225 Difference]: With dead ends: 2901 [2020-01-16 18:37:51,768 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 18:37:51,768 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:37:51,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 18:37:51,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1572. [2020-01-16 18:37:51,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:37:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7034 transitions. [2020-01-16 18:37:51,833 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7034 transitions. Word has length 28 [2020-01-16 18:37:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:51,833 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7034 transitions. [2020-01-16 18:37:51,833 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:51,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7034 transitions. [2020-01-16 18:37:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:51,835 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:51,835 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 18:37:51,835 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 18:37:51,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:51,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2140619952, now seen corresponding path program 448 times [2020-01-16 18:37:51,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:51,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358221503] [2020-01-16 18:37:51,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:52,299 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:37:52,424 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:37:52,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:52,431 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358221503] [2020-01-16 18:37:52,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:52,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:52,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522948701] [2020-01-16 18:37:52,431 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:52,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:52,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:52,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:52,432 INFO L87 Difference]: Start difference. First operand 1572 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:37:52,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:52,641 INFO L93 Difference]: Finished difference Result 2903 states and 11590 transitions. [2020-01-16 18:37:52,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:52,641 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:52,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:52,649 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 18:37:52,649 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:37:52,649 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 18:37:52,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:37:52,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1567. [2020-01-16 18:37:52,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:37:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7021 transitions. [2020-01-16 18:37:52,714 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7021 transitions. Word has length 28 [2020-01-16 18:37:52,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:52,715 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7021 transitions. [2020-01-16 18:37:52,715 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7021 transitions. [2020-01-16 18:37:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:52,717 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:52,717 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 18:37:52,717 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 18:37:52,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:52,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1726926112, now seen corresponding path program 449 times [2020-01-16 18:37:52,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:52,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322824171] [2020-01-16 18:37:52,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:53,302 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:53,310 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 18:37:53,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322824171] [2020-01-16 18:37:53,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:53,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:53,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848160886] [2020-01-16 18:37:53,310 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:53,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:53,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:53,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:53,311 INFO L87 Difference]: Start difference. First operand 1567 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:37:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:53,533 INFO L93 Difference]: Finished difference Result 2898 states and 11580 transitions. [2020-01-16 18:37:53,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:53,534 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:53,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:53,540 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:37:53,541 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 18:37:53,541 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 18:37:53,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 18:37:53,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1571. [2020-01-16 18:37:53,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:37:53,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7028 transitions. [2020-01-16 18:37:53,606 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7028 transitions. Word has length 28 [2020-01-16 18:37:53,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:53,607 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7028 transitions. [2020-01-16 18:37:53,607 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7028 transitions. [2020-01-16 18:37:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:53,609 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:53,609 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:53,609 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 18:37:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:53,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1078636188, now seen corresponding path program 450 times [2020-01-16 18:37:53,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:53,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352108185] [2020-01-16 18:37:53,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:54,074 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:54,204 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:54,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352108185] [2020-01-16 18:37:54,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:54,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:54,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087575121] [2020-01-16 18:37:54,211 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:54,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:54,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:54,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:54,211 INFO L87 Difference]: Start difference. First operand 1571 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:37:54,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:54,445 INFO L93 Difference]: Finished difference Result 2901 states and 11582 transitions. [2020-01-16 18:37:54,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:54,445 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:54,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:54,453 INFO L225 Difference]: With dead ends: 2901 [2020-01-16 18:37:54,453 INFO L226 Difference]: Without dead ends: 2876 [2020-01-16 18:37:54,453 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 18:37:54,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2020-01-16 18:37:54,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 1563. [2020-01-16 18:37:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:37:54,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7010 transitions. [2020-01-16 18:37:54,518 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7010 transitions. Word has length 28 [2020-01-16 18:37:54,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:54,518 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7010 transitions. [2020-01-16 18:37:54,518 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:54,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7010 transitions. [2020-01-16 18:37:54,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:54,520 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:54,520 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 18:37:54,521 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 18:37:54,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:54,521 INFO L82 PathProgramCache]: Analyzing trace with hash -478297846, now seen corresponding path program 451 times [2020-01-16 18:37:54,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:54,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20172543] [2020-01-16 18:37:54,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:55,111 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:37:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:37:55,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20172543] [2020-01-16 18:37:55,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:55,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:55,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495263213] [2020-01-16 18:37:55,118 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:55,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:55,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:55,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:55,118 INFO L87 Difference]: Start difference. First operand 1563 states and 7010 transitions. Second operand 11 states. [2020-01-16 18:37:55,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:55,322 INFO L93 Difference]: Finished difference Result 2908 states and 11606 transitions. [2020-01-16 18:37:55,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:55,323 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:55,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:55,330 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 18:37:55,330 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:37:55,331 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 18:37:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:37:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1571. [2020-01-16 18:37:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:37:55,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7032 transitions. [2020-01-16 18:37:55,397 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7032 transitions. Word has length 28 [2020-01-16 18:37:55,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:55,397 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7032 transitions. [2020-01-16 18:37:55,398 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7032 transitions. [2020-01-16 18:37:55,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:55,400 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:55,400 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 18:37:55,400 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 18:37:55,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:55,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1755809648, now seen corresponding path program 452 times [2020-01-16 18:37:55,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:55,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584115634] [2020-01-16 18:37:55,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:55,859 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:37:56,015 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:37:56,022 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 18:37:56,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584115634] [2020-01-16 18:37:56,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:56,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:56,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937421034] [2020-01-16 18:37:56,023 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:56,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:56,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:56,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:56,024 INFO L87 Difference]: Start difference. First operand 1571 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:37:56,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:56,218 INFO L93 Difference]: Finished difference Result 2904 states and 11594 transitions. [2020-01-16 18:37:56,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:56,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:56,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:56,226 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:37:56,226 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 18:37:56,226 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 18:37:56,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 18:37:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1567. [2020-01-16 18:37:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:37:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7021 transitions. [2020-01-16 18:37:56,292 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7021 transitions. Word has length 28 [2020-01-16 18:37:56,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:56,292 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7021 transitions. [2020-01-16 18:37:56,292 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7021 transitions. [2020-01-16 18:37:56,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:56,294 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:56,294 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:56,294 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 18:37:56,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:56,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1551383226, now seen corresponding path program 453 times [2020-01-16 18:37:56,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:56,295 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013189030] [2020-01-16 18:37:56,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:56,754 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:37:56,882 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:37:56,890 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 18:37:56,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013189030] [2020-01-16 18:37:56,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:56,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:56,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704611526] [2020-01-16 18:37:56,890 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:56,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:56,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:56,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:56,891 INFO L87 Difference]: Start difference. First operand 1567 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:37:57,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:57,115 INFO L93 Difference]: Finished difference Result 2914 states and 11617 transitions. [2020-01-16 18:37:57,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:57,116 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:57,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:57,123 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 18:37:57,123 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 18:37:57,123 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 18:37:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 18:37:57,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1574. [2020-01-16 18:37:57,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:37:57,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7034 transitions. [2020-01-16 18:37:57,190 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7034 transitions. Word has length 28 [2020-01-16 18:37:57,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:57,190 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7034 transitions. [2020-01-16 18:37:57,190 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7034 transitions. [2020-01-16 18:37:57,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:57,192 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:57,192 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 18:37:57,192 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 18:37:57,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:57,193 INFO L82 PathProgramCache]: Analyzing trace with hash -2122838032, now seen corresponding path program 454 times [2020-01-16 18:37:57,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:57,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153377316] [2020-01-16 18:37:57,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:57,653 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:57,781 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:57,788 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 18:37:57,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153377316] [2020-01-16 18:37:57,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:57,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:57,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821546628] [2020-01-16 18:37:57,789 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:57,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:57,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:57,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:57,789 INFO L87 Difference]: Start difference. First operand 1574 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:37:58,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:58,003 INFO L93 Difference]: Finished difference Result 2913 states and 11608 transitions. [2020-01-16 18:37:58,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:58,004 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:58,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:58,011 INFO L225 Difference]: With dead ends: 2913 [2020-01-16 18:37:58,011 INFO L226 Difference]: Without dead ends: 2889 [2020-01-16 18:37:58,011 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 18:37:58,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-01-16 18:37:58,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1567. [2020-01-16 18:37:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:37:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7017 transitions. [2020-01-16 18:37:58,078 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7017 transitions. Word has length 28 [2020-01-16 18:37:58,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:58,078 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7017 transitions. [2020-01-16 18:37:58,079 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:58,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7017 transitions. [2020-01-16 18:37:58,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:58,081 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:58,081 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 18:37:58,081 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 18:37:58,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:58,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1220579846, now seen corresponding path program 455 times [2020-01-16 18:37:58,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:58,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233278424] [2020-01-16 18:37:58,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:58,658 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:58,665 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 18:37:58,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233278424] [2020-01-16 18:37:58,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:58,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:58,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446124528] [2020-01-16 18:37:58,666 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:58,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:58,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:58,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:58,666 INFO L87 Difference]: Start difference. First operand 1567 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:37:58,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:58,912 INFO L93 Difference]: Finished difference Result 2903 states and 11588 transitions. [2020-01-16 18:37:58,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:58,913 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:58,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:58,920 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 18:37:58,920 INFO L226 Difference]: Without dead ends: 2889 [2020-01-16 18:37:58,920 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 18:37:58,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-01-16 18:37:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1571. [2020-01-16 18:37:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:37:58,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7024 transitions. [2020-01-16 18:37:58,988 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7024 transitions. Word has length 28 [2020-01-16 18:37:58,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:58,989 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7024 transitions. [2020-01-16 18:37:58,989 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:58,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7024 transitions. [2020-01-16 18:37:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:58,991 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:58,991 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 18:37:58,991 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 18:37:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:58,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1584982454, now seen corresponding path program 456 times [2020-01-16 18:37:58,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:58,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728519568] [2020-01-16 18:37:58,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:37:59,460 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:37:59,586 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:37:59,593 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 18:37:59,593 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728519568] [2020-01-16 18:37:59,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:37:59,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:37:59,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085892068] [2020-01-16 18:37:59,594 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:37:59,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:37:59,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:37:59,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:37:59,594 INFO L87 Difference]: Start difference. First operand 1571 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:37:59,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:37:59,835 INFO L93 Difference]: Finished difference Result 2906 states and 11590 transitions. [2020-01-16 18:37:59,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:37:59,835 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:37:59,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:37:59,842 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:37:59,842 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 18:37:59,842 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 18:37:59,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 18:37:59,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1559. [2020-01-16 18:37:59,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-01-16 18:37:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 6999 transitions. [2020-01-16 18:37:59,907 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 6999 transitions. Word has length 28 [2020-01-16 18:37:59,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:37:59,908 INFO L478 AbstractCegarLoop]: Abstraction has 1559 states and 6999 transitions. [2020-01-16 18:37:59,908 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:37:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 6999 transitions. [2020-01-16 18:37:59,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:37:59,910 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:37:59,910 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:37:59,910 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 18:37:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:37:59,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1188275872, now seen corresponding path program 457 times [2020-01-16 18:37:59,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:37:59,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010814178] [2020-01-16 18:37:59,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:37:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:00,365 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:38:00,493 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:38:00,499 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 18:38:00,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010814178] [2020-01-16 18:38:00,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:00,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:00,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038835887] [2020-01-16 18:38:00,500 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:00,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:00,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:00,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:00,500 INFO L87 Difference]: Start difference. First operand 1559 states and 6999 transitions. Second operand 11 states. [2020-01-16 18:38:00,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:00,725 INFO L93 Difference]: Finished difference Result 2912 states and 11627 transitions. [2020-01-16 18:38:00,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:00,725 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:00,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:00,732 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:38:00,732 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 18:38:00,732 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 18:38:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 18:38:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1573. [2020-01-16 18:38:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:38:00,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 18:38:00,798 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 18:38:00,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:00,798 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 18:38:00,798 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:00,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 18:38:00,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:00,800 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:00,800 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 18:38:00,800 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 18:38:00,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:00,800 INFO L82 PathProgramCache]: Analyzing trace with hash 301129124, now seen corresponding path program 458 times [2020-01-16 18:38:00,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:00,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740779521] [2020-01-16 18:38:00,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:01,377 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:38:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:01,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740779521] [2020-01-16 18:38:01,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:01,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:01,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135363617] [2020-01-16 18:38:01,385 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:01,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:01,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:01,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:01,385 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:38:01,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:01,586 INFO L93 Difference]: Finished difference Result 2914 states and 11625 transitions. [2020-01-16 18:38:01,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:01,587 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:01,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:01,594 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 18:38:01,594 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:38:01,594 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 18:38:01,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:38:01,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1567. [2020-01-16 18:38:01,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:38:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 18:38:01,661 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 18:38:01,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:01,662 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 18:38:01,662 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:01,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 18:38:01,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:01,664 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:01,664 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:01,664 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 18:38:01,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:01,664 INFO L82 PathProgramCache]: Analyzing trace with hash -650420294, now seen corresponding path program 459 times [2020-01-16 18:38:01,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:01,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790514251] [2020-01-16 18:38:01,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:02,021 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2020-01-16 18:38:02,143 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:38:02,271 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:38:02,278 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 18:38:02,279 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790514251] [2020-01-16 18:38:02,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:02,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:02,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047840366] [2020-01-16 18:38:02,279 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:02,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:02,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:02,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:02,279 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:38:02,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:02,503 INFO L93 Difference]: Finished difference Result 2906 states and 11609 transitions. [2020-01-16 18:38:02,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:02,503 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:02,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:02,510 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:38:02,510 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:38:02,511 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:38:02,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:38:02,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1571. [2020-01-16 18:38:02,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:38:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:38:02,576 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:38:02,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:02,576 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:38:02,576 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:02,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:38:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:02,579 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:02,579 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 18:38:02,579 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 18:38:02,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:02,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1221875100, now seen corresponding path program 460 times [2020-01-16 18:38:02,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:02,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266875358] [2020-01-16 18:38:02,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:03,159 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:38:03,166 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 18:38:03,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266875358] [2020-01-16 18:38:03,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:03,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:03,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934649625] [2020-01-16 18:38:03,167 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:03,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:03,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:03,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:03,167 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:38:03,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:03,413 INFO L93 Difference]: Finished difference Result 2904 states and 11601 transitions. [2020-01-16 18:38:03,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:03,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:03,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:03,421 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:38:03,421 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 18:38:03,421 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 18:38:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 18:38:03,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1567. [2020-01-16 18:38:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:38:03,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 18:38:03,488 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 18:38:03,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:03,489 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 18:38:03,489 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:03,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 18:38:03,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:03,491 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:03,491 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 18:38:03,491 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 18:38:03,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:03,491 INFO L82 PathProgramCache]: Analyzing trace with hash -234100678, now seen corresponding path program 461 times [2020-01-16 18:38:03,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:03,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882055779] [2020-01-16 18:38:03,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:04,071 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:38:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:04,078 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882055779] [2020-01-16 18:38:04,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:04,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:04,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013673879] [2020-01-16 18:38:04,079 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:04,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:04,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:04,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:04,079 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:38:04,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:04,303 INFO L93 Difference]: Finished difference Result 2910 states and 11613 transitions. [2020-01-16 18:38:04,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:04,303 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:04,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:04,311 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:38:04,311 INFO L226 Difference]: Without dead ends: 2892 [2020-01-16 18:38:04,311 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 18:38:04,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-01-16 18:38:04,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 1571. [2020-01-16 18:38:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:38:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7032 transitions. [2020-01-16 18:38:04,381 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7032 transitions. Word has length 28 [2020-01-16 18:38:04,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:04,381 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7032 transitions. [2020-01-16 18:38:04,381 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:04,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7032 transitions. [2020-01-16 18:38:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:04,384 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:04,384 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:04,384 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 18:38:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:04,384 INFO L82 PathProgramCache]: Analyzing trace with hash 2000006816, now seen corresponding path program 462 times [2020-01-16 18:38:04,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:04,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512815124] [2020-01-16 18:38:04,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:04,838 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:38:04,967 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:38:04,974 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 18:38:04,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512815124] [2020-01-16 18:38:04,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:04,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:04,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906781438] [2020-01-16 18:38:04,974 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:04,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:04,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:04,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:04,975 INFO L87 Difference]: Start difference. First operand 1571 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:38:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:05,188 INFO L93 Difference]: Finished difference Result 2906 states and 11601 transitions. [2020-01-16 18:38:05,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:05,189 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:05,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:05,195 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:38:05,195 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 18:38:05,195 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 18:38:05,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 18:38:05,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1563. [2020-01-16 18:38:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:38:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7014 transitions. [2020-01-16 18:38:05,263 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7014 transitions. Word has length 28 [2020-01-16 18:38:05,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:05,263 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7014 transitions. [2020-01-16 18:38:05,263 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7014 transitions. [2020-01-16 18:38:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:05,265 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:05,265 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 18:38:05,265 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 18:38:05,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:05,266 INFO L82 PathProgramCache]: Analyzing trace with hash -94184284, now seen corresponding path program 463 times [2020-01-16 18:38:05,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:05,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212629753] [2020-01-16 18:38:05,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:05,740 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:38:05,870 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:38:05,877 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 18:38:05,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212629753] [2020-01-16 18:38:05,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:05,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:05,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422733262] [2020-01-16 18:38:05,877 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:05,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:05,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:05,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:05,878 INFO L87 Difference]: Start difference. First operand 1563 states and 7014 transitions. Second operand 11 states. [2020-01-16 18:38:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:06,103 INFO L93 Difference]: Finished difference Result 2922 states and 11652 transitions. [2020-01-16 18:38:06,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:06,103 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:06,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:06,110 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:38:06,111 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:38:06,111 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 18:38:06,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:38:06,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1575. [2020-01-16 18:38:06,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:38:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7048 transitions. [2020-01-16 18:38:06,176 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7048 transitions. Word has length 28 [2020-01-16 18:38:06,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:06,176 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7048 transitions. [2020-01-16 18:38:06,177 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:06,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7048 transitions. [2020-01-16 18:38:06,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:06,179 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:06,179 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 18:38:06,179 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 18:38:06,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:06,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1395220712, now seen corresponding path program 464 times [2020-01-16 18:38:06,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:06,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323774183] [2020-01-16 18:38:06,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:06,781 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:38:06,788 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 18:38:06,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323774183] [2020-01-16 18:38:06,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:06,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:06,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657350233] [2020-01-16 18:38:06,789 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:06,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:06,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:06,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:06,789 INFO L87 Difference]: Start difference. First operand 1575 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:38:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:06,985 INFO L93 Difference]: Finished difference Result 2924 states and 11650 transitions. [2020-01-16 18:38:06,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:06,986 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:06,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:06,992 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:38:06,993 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:38:06,993 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:38:07,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:38:07,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1569. [2020-01-16 18:38:07,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:38:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7031 transitions. [2020-01-16 18:38:07,060 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7031 transitions. Word has length 28 [2020-01-16 18:38:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:07,060 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7031 transitions. [2020-01-16 18:38:07,060 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:07,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7031 transitions. [2020-01-16 18:38:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:07,062 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:07,062 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:07,062 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 18:38:07,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:07,062 INFO L82 PathProgramCache]: Analyzing trace with hash -629414086, now seen corresponding path program 465 times [2020-01-16 18:38:07,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:07,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5746020] [2020-01-16 18:38:07,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:07,662 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:07,669 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 18:38:07,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5746020] [2020-01-16 18:38:07,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:07,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:07,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355644863] [2020-01-16 18:38:07,669 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:07,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:07,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:07,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:07,670 INFO L87 Difference]: Start difference. First operand 1569 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:38:07,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:07,955 INFO L93 Difference]: Finished difference Result 2921 states and 11644 transitions. [2020-01-16 18:38:07,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:07,955 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:07,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:07,962 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:38:07,963 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 18:38:07,963 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:38:08,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 18:38:08,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1575. [2020-01-16 18:38:08,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:38:08,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7042 transitions. [2020-01-16 18:38:08,058 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7042 transitions. Word has length 28 [2020-01-16 18:38:08,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:08,058 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7042 transitions. [2020-01-16 18:38:08,058 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:08,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7042 transitions. [2020-01-16 18:38:08,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:08,060 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:08,060 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 18:38:08,060 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 18:38:08,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:08,061 INFO L82 PathProgramCache]: Analyzing trace with hash 288536104, now seen corresponding path program 466 times [2020-01-16 18:38:08,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:08,061 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276825193] [2020-01-16 18:38:08,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:08,539 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:38:08,669 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:08,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276825193] [2020-01-16 18:38:08,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:08,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:08,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425104471] [2020-01-16 18:38:08,677 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:08,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:08,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:08,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:08,677 INFO L87 Difference]: Start difference. First operand 1575 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:38:08,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:08,910 INFO L93 Difference]: Finished difference Result 2922 states and 11640 transitions. [2020-01-16 18:38:08,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:08,911 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:08,918 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:38:08,918 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 18:38:08,919 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 18:38:08,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 18:38:08,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1569. [2020-01-16 18:38:08,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:38:08,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7025 transitions. [2020-01-16 18:38:08,984 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7025 transitions. Word has length 28 [2020-01-16 18:38:08,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:08,984 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7025 transitions. [2020-01-16 18:38:08,984 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:08,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7025 transitions. [2020-01-16 18:38:08,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:08,986 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:08,986 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:08,987 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 18:38:08,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:08,987 INFO L82 PathProgramCache]: Analyzing trace with hash -213094470, now seen corresponding path program 467 times [2020-01-16 18:38:08,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:08,987 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317412418] [2020-01-16 18:38:08,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:09,462 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:38:09,590 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:38:09,597 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 18:38:09,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317412418] [2020-01-16 18:38:09,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:09,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:09,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449126365] [2020-01-16 18:38:09,598 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:09,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:09,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:09,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:09,598 INFO L87 Difference]: Start difference. First operand 1569 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:38:09,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:09,884 INFO L93 Difference]: Finished difference Result 2926 states and 11649 transitions. [2020-01-16 18:38:09,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:09,884 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:09,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:09,891 INFO L225 Difference]: With dead ends: 2926 [2020-01-16 18:38:09,891 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:38:09,891 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 18:38:09,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:38:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1576. [2020-01-16 18:38:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:38:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7038 transitions. [2020-01-16 18:38:09,957 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7038 transitions. Word has length 28 [2020-01-16 18:38:09,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:09,957 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7038 transitions. [2020-01-16 18:38:09,957 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7038 transitions. [2020-01-16 18:38:09,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:09,959 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:09,959 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:09,960 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 18:38:09,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:09,960 INFO L82 PathProgramCache]: Analyzing trace with hash -784549276, now seen corresponding path program 468 times [2020-01-16 18:38:09,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:09,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293526471] [2020-01-16 18:38:09,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:10,438 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:38:10,568 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:10,576 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293526471] [2020-01-16 18:38:10,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:10,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:10,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987842805] [2020-01-16 18:38:10,576 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:10,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:10,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:10,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:10,577 INFO L87 Difference]: Start difference. First operand 1576 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:38:10,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:10,812 INFO L93 Difference]: Finished difference Result 2925 states and 11640 transitions. [2020-01-16 18:38:10,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:10,812 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:10,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:10,820 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 18:38:10,820 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 18:38:10,820 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 18:38:10,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 18:38:10,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1563. [2020-01-16 18:38:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:38:10,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7010 transitions. [2020-01-16 18:38:10,888 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7010 transitions. Word has length 28 [2020-01-16 18:38:10,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:10,888 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7010 transitions. [2020-01-16 18:38:10,888 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:10,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7010 transitions. [2020-01-16 18:38:10,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:10,890 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:10,890 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:10,890 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 18:38:10,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:10,891 INFO L82 PathProgramCache]: Analyzing trace with hash -62674972, now seen corresponding path program 469 times [2020-01-16 18:38:10,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:10,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891018389] [2020-01-16 18:38:10,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:11,474 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:11,481 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 18:38:11,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891018389] [2020-01-16 18:38:11,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:11,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:11,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509086436] [2020-01-16 18:38:11,481 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:11,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:11,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:11,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:11,482 INFO L87 Difference]: Start difference. First operand 1563 states and 7010 transitions. Second operand 11 states. [2020-01-16 18:38:11,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:11,714 INFO L93 Difference]: Finished difference Result 2905 states and 11603 transitions. [2020-01-16 18:38:11,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:11,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:11,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:11,721 INFO L225 Difference]: With dead ends: 2905 [2020-01-16 18:38:11,722 INFO L226 Difference]: Without dead ends: 2889 [2020-01-16 18:38:11,722 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 18:38:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-01-16 18:38:11,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1571. [2020-01-16 18:38:11,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:38:11,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7032 transitions. [2020-01-16 18:38:11,787 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7032 transitions. Word has length 28 [2020-01-16 18:38:11,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:11,787 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7032 transitions. [2020-01-16 18:38:11,787 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:11,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7032 transitions. [2020-01-16 18:38:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:11,789 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:11,789 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 18:38:11,789 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 18:38:11,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:11,790 INFO L82 PathProgramCache]: Analyzing trace with hash -634129778, now seen corresponding path program 470 times [2020-01-16 18:38:11,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:11,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974977279] [2020-01-16 18:38:11,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:12,246 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:38:12,376 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:12,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974977279] [2020-01-16 18:38:12,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:12,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:12,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780925651] [2020-01-16 18:38:12,384 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:12,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:12,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:12,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:12,384 INFO L87 Difference]: Start difference. First operand 1571 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:38:12,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:12,616 INFO L93 Difference]: Finished difference Result 2903 states and 11595 transitions. [2020-01-16 18:38:12,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:12,616 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:12,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:12,623 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 18:38:12,623 INFO L226 Difference]: Without dead ends: 2885 [2020-01-16 18:38:12,623 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 18:38:12,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-01-16 18:38:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1567. [2020-01-16 18:38:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:38:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7021 transitions. [2020-01-16 18:38:12,688 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7021 transitions. Word has length 28 [2020-01-16 18:38:12,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:12,689 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7021 transitions. [2020-01-16 18:38:12,689 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:12,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7021 transitions. [2020-01-16 18:38:12,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:12,691 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:12,691 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:12,691 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 18:38:12,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:12,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1135760352, now seen corresponding path program 471 times [2020-01-16 18:38:12,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:12,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196914118] [2020-01-16 18:38:12,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:13,283 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:13,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196914118] [2020-01-16 18:38:13,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:13,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:13,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945830528] [2020-01-16 18:38:13,289 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:13,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:13,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:13,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:13,290 INFO L87 Difference]: Start difference. First operand 1567 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:38:13,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:13,505 INFO L93 Difference]: Finished difference Result 2910 states and 11611 transitions. [2020-01-16 18:38:13,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:13,506 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:13,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:13,513 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:38:13,514 INFO L226 Difference]: Without dead ends: 2894 [2020-01-16 18:38:13,514 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 18:38:13,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-01-16 18:38:13,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1573. [2020-01-16 18:38:13,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:38:13,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7032 transitions. [2020-01-16 18:38:13,580 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7032 transitions. Word has length 28 [2020-01-16 18:38:13,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:13,580 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7032 transitions. [2020-01-16 18:38:13,581 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:13,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7032 transitions. [2020-01-16 18:38:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:13,583 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:13,583 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:13,583 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 18:38:13,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:13,583 INFO L82 PathProgramCache]: Analyzing trace with hash -217810162, now seen corresponding path program 472 times [2020-01-16 18:38:13,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:13,583 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838916756] [2020-01-16 18:38:13,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:14,060 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:38:14,189 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:14,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838916756] [2020-01-16 18:38:14,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:14,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:14,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776064817] [2020-01-16 18:38:14,197 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:14,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:14,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:14,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:14,197 INFO L87 Difference]: Start difference. First operand 1573 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:38:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:14,510 INFO L93 Difference]: Finished difference Result 2911 states and 11607 transitions. [2020-01-16 18:38:14,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:14,511 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:14,518 INFO L225 Difference]: With dead ends: 2911 [2020-01-16 18:38:14,518 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 18:38:14,519 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 18:38:14,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 18:38:14,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1567. [2020-01-16 18:38:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:38:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7017 transitions. [2020-01-16 18:38:14,584 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7017 transitions. Word has length 28 [2020-01-16 18:38:14,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:14,584 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7017 transitions. [2020-01-16 18:38:14,584 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7017 transitions. [2020-01-16 18:38:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:14,586 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:14,586 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 18:38:14,586 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 18:38:14,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:14,587 INFO L82 PathProgramCache]: Analyzing trace with hash 2052522336, now seen corresponding path program 473 times [2020-01-16 18:38:14,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:14,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542148937] [2020-01-16 18:38:14,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:15,052 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:38:15,184 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:15,191 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 18:38:15,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542148937] [2020-01-16 18:38:15,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:15,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:15,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380478816] [2020-01-16 18:38:15,191 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:15,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:15,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:15,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:15,192 INFO L87 Difference]: Start difference. First operand 1567 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:38:15,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:15,408 INFO L93 Difference]: Finished difference Result 2904 states and 11593 transitions. [2020-01-16 18:38:15,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:15,409 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:15,416 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:38:15,416 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:38:15,416 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 18:38:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:38:15,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1571. [2020-01-16 18:38:15,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:38:15,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7024 transitions. [2020-01-16 18:38:15,482 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7024 transitions. Word has length 28 [2020-01-16 18:38:15,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:15,482 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7024 transitions. [2020-01-16 18:38:15,482 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:15,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7024 transitions. [2020-01-16 18:38:15,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:15,484 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:15,484 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 18:38:15,484 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 18:38:15,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:15,484 INFO L82 PathProgramCache]: Analyzing trace with hash -753039964, now seen corresponding path program 474 times [2020-01-16 18:38:15,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:15,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795815071] [2020-01-16 18:38:15,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:15,945 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:38:16,071 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:16,078 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795815071] [2020-01-16 18:38:16,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:16,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:16,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464584073] [2020-01-16 18:38:16,078 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:16,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:16,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:16,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:16,079 INFO L87 Difference]: Start difference. First operand 1571 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:38:16,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:16,375 INFO L93 Difference]: Finished difference Result 2907 states and 11595 transitions. [2020-01-16 18:38:16,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:16,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:16,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:16,383 INFO L225 Difference]: With dead ends: 2907 [2020-01-16 18:38:16,383 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 18:38:16,384 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 18:38:16,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 18:38:16,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1563. [2020-01-16 18:38:16,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:38:16,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7006 transitions. [2020-01-16 18:38:16,448 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7006 transitions. Word has length 28 [2020-01-16 18:38:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:16,449 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7006 transitions. [2020-01-16 18:38:16,449 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:16,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7006 transitions. [2020-01-16 18:38:16,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:16,451 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:16,451 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 18:38:16,451 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 18:38:16,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:16,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1447736232, now seen corresponding path program 475 times [2020-01-16 18:38:16,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:16,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933151149] [2020-01-16 18:38:16,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:16,922 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:38:17,051 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:38:17,057 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 18:38:17,058 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933151149] [2020-01-16 18:38:17,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:17,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:17,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360640295] [2020-01-16 18:38:17,058 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:17,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:17,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:17,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:17,059 INFO L87 Difference]: Start difference. First operand 1563 states and 7006 transitions. Second operand 11 states. [2020-01-16 18:38:17,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:17,247 INFO L93 Difference]: Finished difference Result 2912 states and 11614 transitions. [2020-01-16 18:38:17,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:17,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:17,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:17,254 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:38:17,254 INFO L226 Difference]: Without dead ends: 2894 [2020-01-16 18:38:17,254 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 18:38:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-01-16 18:38:17,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1571. [2020-01-16 18:38:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:38:17,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7028 transitions. [2020-01-16 18:38:17,321 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7028 transitions. Word has length 28 [2020-01-16 18:38:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:17,321 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7028 transitions. [2020-01-16 18:38:17,321 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:17,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7028 transitions. [2020-01-16 18:38:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:17,323 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:17,323 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 18:38:17,323 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 18:38:17,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:17,324 INFO L82 PathProgramCache]: Analyzing trace with hash -613123570, now seen corresponding path program 476 times [2020-01-16 18:38:17,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:17,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295411371] [2020-01-16 18:38:17,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:17,790 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:38:17,920 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:38:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:17,927 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295411371] [2020-01-16 18:38:17,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:17,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:17,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107362450] [2020-01-16 18:38:17,928 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:17,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:17,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:17,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:17,928 INFO L87 Difference]: Start difference. First operand 1571 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:38:18,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:18,117 INFO L93 Difference]: Finished difference Result 2908 states and 11602 transitions. [2020-01-16 18:38:18,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:18,118 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:18,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:18,125 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 18:38:18,125 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:38:18,126 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 18:38:18,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:38:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1567. [2020-01-16 18:38:18,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:38:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7017 transitions. [2020-01-16 18:38:18,190 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7017 transitions. Word has length 28 [2020-01-16 18:38:18,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:18,190 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7017 transitions. [2020-01-16 18:38:18,190 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7017 transitions. [2020-01-16 18:38:18,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:18,193 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:18,193 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:18,193 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 18:38:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:18,193 INFO L82 PathProgramCache]: Analyzing trace with hash 374650852, now seen corresponding path program 477 times [2020-01-16 18:38:18,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:18,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414875831] [2020-01-16 18:38:18,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:18,671 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:38:18,799 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:38:18,806 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 18:38:18,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414875831] [2020-01-16 18:38:18,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:18,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:18,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639387978] [2020-01-16 18:38:18,806 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:18,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:18,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:18,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:18,807 INFO L87 Difference]: Start difference. First operand 1567 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:38:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:18,999 INFO L93 Difference]: Finished difference Result 2918 states and 11625 transitions. [2020-01-16 18:38:19,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:19,000 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:19,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:19,007 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 18:38:19,007 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:38:19,007 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 18:38:19,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:38:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1574. [2020-01-16 18:38:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:38:19,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7030 transitions. [2020-01-16 18:38:19,072 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7030 transitions. Word has length 28 [2020-01-16 18:38:19,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:19,072 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7030 transitions. [2020-01-16 18:38:19,073 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:19,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7030 transitions. [2020-01-16 18:38:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:19,075 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:19,075 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:19,075 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 18:38:19,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:19,075 INFO L82 PathProgramCache]: Analyzing trace with hash -196803954, now seen corresponding path program 478 times [2020-01-16 18:38:19,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:19,075 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225809622] [2020-01-16 18:38:19,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:19,547 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:38:19,674 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:19,681 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 18:38:19,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225809622] [2020-01-16 18:38:19,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:19,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:19,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382061517] [2020-01-16 18:38:19,682 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:19,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:19,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:19,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:19,682 INFO L87 Difference]: Start difference. First operand 1574 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:38:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:19,883 INFO L93 Difference]: Finished difference Result 2917 states and 11616 transitions. [2020-01-16 18:38:19,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:19,884 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:19,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:19,892 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 18:38:19,892 INFO L226 Difference]: Without dead ends: 2893 [2020-01-16 18:38:19,892 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 18:38:19,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-01-16 18:38:19,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1567. [2020-01-16 18:38:19,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:38:19,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7013 transitions. [2020-01-16 18:38:19,957 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7013 transitions. Word has length 28 [2020-01-16 18:38:19,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:19,957 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7013 transitions. [2020-01-16 18:38:19,957 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:19,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7013 transitions. [2020-01-16 18:38:19,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:19,959 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:19,959 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:19,959 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 18:38:19,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:19,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1148353372, now seen corresponding path program 479 times [2020-01-16 18:38:19,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:19,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559949323] [2020-01-16 18:38:19,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:20,328 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2020-01-16 18:38:20,575 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:20,582 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 18:38:20,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559949323] [2020-01-16 18:38:20,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:20,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:20,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297848533] [2020-01-16 18:38:20,583 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:20,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:20,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:20,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:20,583 INFO L87 Difference]: Start difference. First operand 1567 states and 7013 transitions. Second operand 11 states. [2020-01-16 18:38:20,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:20,775 INFO L93 Difference]: Finished difference Result 2907 states and 11596 transitions. [2020-01-16 18:38:20,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:20,776 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:20,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:20,783 INFO L225 Difference]: With dead ends: 2907 [2020-01-16 18:38:20,784 INFO L226 Difference]: Without dead ends: 2893 [2020-01-16 18:38:20,784 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 18:38:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-01-16 18:38:20,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1571. [2020-01-16 18:38:20,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:38:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7020 transitions. [2020-01-16 18:38:20,850 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7020 transitions. Word has length 28 [2020-01-16 18:38:20,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:20,850 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7020 transitions. [2020-01-16 18:38:20,850 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:20,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7020 transitions. [2020-01-16 18:38:20,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:20,852 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:20,852 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 18:38:20,852 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 18:38:20,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:20,853 INFO L82 PathProgramCache]: Analyzing trace with hash 341051624, now seen corresponding path program 480 times [2020-01-16 18:38:20,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:20,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199150842] [2020-01-16 18:38:20,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:21,439 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:21,446 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 18:38:21,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199150842] [2020-01-16 18:38:21,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:21,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:21,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460649290] [2020-01-16 18:38:21,446 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:21,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:21,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:21,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:21,447 INFO L87 Difference]: Start difference. First operand 1571 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:38:21,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:21,661 INFO L93 Difference]: Finished difference Result 2910 states and 11598 transitions. [2020-01-16 18:38:21,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:21,662 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:21,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:21,669 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:38:21,669 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 18:38:21,670 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 18:38:21,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 18:38:21,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1555. [2020-01-16 18:38:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 18:38:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6988 transitions. [2020-01-16 18:38:21,735 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6988 transitions. Word has length 28 [2020-01-16 18:38:21,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:21,735 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 6988 transitions. [2020-01-16 18:38:21,735 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6988 transitions. [2020-01-16 18:38:21,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:21,738 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:21,738 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 18:38:21,739 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 18:38:21,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:21,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1827506600, now seen corresponding path program 481 times [2020-01-16 18:38:21,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:21,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33997863] [2020-01-16 18:38:21,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:22,333 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:38:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:22,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33997863] [2020-01-16 18:38:22,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:22,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:22,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484407396] [2020-01-16 18:38:22,341 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:22,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:22,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:22,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:22,341 INFO L87 Difference]: Start difference. First operand 1555 states and 6988 transitions. Second operand 11 states. [2020-01-16 18:38:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:22,539 INFO L93 Difference]: Finished difference Result 2973 states and 11790 transitions. [2020-01-16 18:38:22,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:22,540 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:22,547 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:38:22,548 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:38:22,548 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 18:38:22,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:38:22,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1581. [2020-01-16 18:38:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:38:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7084 transitions. [2020-01-16 18:38:22,613 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7084 transitions. Word has length 28 [2020-01-16 18:38:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:22,614 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7084 transitions. [2020-01-16 18:38:22,614 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7084 transitions. [2020-01-16 18:38:22,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:22,616 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:22,616 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 18:38:22,616 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 18:38:22,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:22,616 INFO L82 PathProgramCache]: Analyzing trace with hash -978055700, now seen corresponding path program 482 times [2020-01-16 18:38:22,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:22,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123986245] [2020-01-16 18:38:22,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:23,095 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:38:23,221 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:38:23,228 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 18:38:23,228 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123986245] [2020-01-16 18:38:23,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:23,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:23,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944591574] [2020-01-16 18:38:23,228 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:23,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:23,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:23,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:23,229 INFO L87 Difference]: Start difference. First operand 1581 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:38:23,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:23,376 INFO L93 Difference]: Finished difference Result 2978 states and 11794 transitions. [2020-01-16 18:38:23,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:23,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:23,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:23,383 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:38:23,383 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:38:23,384 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 18:38:23,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:38:23,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1575. [2020-01-16 18:38:23,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:38:23,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7067 transitions. [2020-01-16 18:38:23,449 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7067 transitions. Word has length 28 [2020-01-16 18:38:23,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:23,449 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7067 transitions. [2020-01-16 18:38:23,449 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:23,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7067 transitions. [2020-01-16 18:38:23,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:23,452 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:23,452 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 18:38:23,452 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 18:38:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:23,452 INFO L82 PathProgramCache]: Analyzing trace with hash -856519738, now seen corresponding path program 483 times [2020-01-16 18:38:23,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:23,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245298968] [2020-01-16 18:38:23,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:24,041 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:24,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245298968] [2020-01-16 18:38:24,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:24,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:24,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281921591] [2020-01-16 18:38:24,049 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:24,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:24,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:24,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:24,050 INFO L87 Difference]: Start difference. First operand 1575 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:38:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:24,244 INFO L93 Difference]: Finished difference Result 2970 states and 11779 transitions. [2020-01-16 18:38:24,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:24,245 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:24,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:24,252 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:38:24,252 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 18:38:24,252 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 18:38:24,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 18:38:24,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1580. [2020-01-16 18:38:24,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:38:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7076 transitions. [2020-01-16 18:38:24,318 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7076 transitions. Word has length 28 [2020-01-16 18:38:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:24,318 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7076 transitions. [2020-01-16 18:38:24,318 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:24,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7076 transitions. [2020-01-16 18:38:24,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:24,321 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:24,321 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 18:38:24,321 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 18:38:24,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:24,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1377587756, now seen corresponding path program 484 times [2020-01-16 18:38:24,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:24,321 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829283486] [2020-01-16 18:38:24,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:24,790 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:38:24,920 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:24,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829283486] [2020-01-16 18:38:24,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:24,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:24,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397401746] [2020-01-16 18:38:24,927 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:24,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:24,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:24,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:24,927 INFO L87 Difference]: Start difference. First operand 1580 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:38:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:25,126 INFO L93 Difference]: Finished difference Result 2973 states and 11780 transitions. [2020-01-16 18:38:25,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:25,127 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:25,134 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:38:25,135 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:38:25,135 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 18:38:25,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:38:25,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1575. [2020-01-16 18:38:25,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:38:25,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7062 transitions. [2020-01-16 18:38:25,201 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7062 transitions. Word has length 28 [2020-01-16 18:38:25,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:25,201 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7062 transitions. [2020-01-16 18:38:25,201 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7062 transitions. [2020-01-16 18:38:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:25,203 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:25,203 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 18:38:25,203 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 18:38:25,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:25,203 INFO L82 PathProgramCache]: Analyzing trace with hash -440200122, now seen corresponding path program 485 times [2020-01-16 18:38:25,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:25,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950436096] [2020-01-16 18:38:25,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:25,707 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:38:25,837 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:38:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:25,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950436096] [2020-01-16 18:38:25,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:25,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:25,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495977492] [2020-01-16 18:38:25,844 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:25,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:25,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:25,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:25,845 INFO L87 Difference]: Start difference. First operand 1575 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:38:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:25,988 INFO L93 Difference]: Finished difference Result 2985 states and 11804 transitions. [2020-01-16 18:38:25,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:25,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:25,996 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:38:25,996 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:38:25,996 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 18:38:26,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:38:26,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1585. [2020-01-16 18:38:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:38:26,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7079 transitions. [2020-01-16 18:38:26,066 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7079 transitions. Word has length 28 [2020-01-16 18:38:26,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:26,066 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7079 transitions. [2020-01-16 18:38:26,066 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7079 transitions. [2020-01-16 18:38:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:26,069 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:26,069 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:26,069 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 18:38:26,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:26,070 INFO L82 PathProgramCache]: Analyzing trace with hash 304502376, now seen corresponding path program 486 times [2020-01-16 18:38:26,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:26,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684586666] [2020-01-16 18:38:26,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:26,584 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:38:26,714 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:26,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684586666] [2020-01-16 18:38:26,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:26,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:26,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700422521] [2020-01-16 18:38:26,722 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:26,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:26,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:26,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:26,723 INFO L87 Difference]: Start difference. First operand 1585 states and 7079 transitions. Second operand 11 states. [2020-01-16 18:38:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:26,943 INFO L93 Difference]: Finished difference Result 2983 states and 11792 transitions. [2020-01-16 18:38:26,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:26,944 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:26,951 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:38:26,951 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:38:26,952 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 18:38:26,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:38:27,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1568. [2020-01-16 18:38:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:38:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7043 transitions. [2020-01-16 18:38:27,018 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7043 transitions. Word has length 28 [2020-01-16 18:38:27,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:27,018 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7043 transitions. [2020-01-16 18:38:27,018 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:27,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7043 transitions. [2020-01-16 18:38:27,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:27,020 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:27,020 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:27,020 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 18:38:27,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:27,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1321160334, now seen corresponding path program 487 times [2020-01-16 18:38:27,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:27,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218043958] [2020-01-16 18:38:27,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:27,627 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:38:27,633 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 18:38:27,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218043958] [2020-01-16 18:38:27,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:27,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:27,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724967636] [2020-01-16 18:38:27,634 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:27,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:27,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:27,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:27,635 INFO L87 Difference]: Start difference. First operand 1568 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:38:27,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:27,826 INFO L93 Difference]: Finished difference Result 2961 states and 11754 transitions. [2020-01-16 18:38:27,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:27,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:27,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:27,834 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:38:27,834 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:38:27,835 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 18:38:27,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:38:27,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1579. [2020-01-16 18:38:27,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:38:27,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7072 transitions. [2020-01-16 18:38:27,900 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7072 transitions. Word has length 28 [2020-01-16 18:38:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:27,900 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7072 transitions. [2020-01-16 18:38:27,900 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7072 transitions. [2020-01-16 18:38:27,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:27,903 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:27,903 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:27,903 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 18:38:27,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:27,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1484401966, now seen corresponding path program 488 times [2020-01-16 18:38:27,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:27,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054440573] [2020-01-16 18:38:27,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:28,381 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:38:28,509 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:38:28,515 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 18:38:28,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054440573] [2020-01-16 18:38:28,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:28,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:28,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797088570] [2020-01-16 18:38:28,516 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:28,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:28,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:28,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:28,517 INFO L87 Difference]: Start difference. First operand 1579 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:38:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:28,670 INFO L93 Difference]: Finished difference Result 2966 states and 11758 transitions. [2020-01-16 18:38:28,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:28,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:28,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:28,678 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:38:28,678 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:38:28,678 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:38:28,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:38:28,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1573. [2020-01-16 18:38:28,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:38:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7056 transitions. [2020-01-16 18:38:28,744 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7056 transitions. Word has length 28 [2020-01-16 18:38:28,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:28,744 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7056 transitions. [2020-01-16 18:38:28,744 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:28,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7056 transitions. [2020-01-16 18:38:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:28,746 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:28,747 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 18:38:28,747 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 18:38:28,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:28,747 INFO L82 PathProgramCache]: Analyzing trace with hash -825010426, now seen corresponding path program 489 times [2020-01-16 18:38:28,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:28,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102608681] [2020-01-16 18:38:28,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:29,345 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:38:29,352 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 18:38:29,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102608681] [2020-01-16 18:38:29,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:29,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:29,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468910448] [2020-01-16 18:38:29,353 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:29,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:29,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:29,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:29,353 INFO L87 Difference]: Start difference. First operand 1573 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:38:29,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:29,549 INFO L93 Difference]: Finished difference Result 2953 states and 11733 transitions. [2020-01-16 18:38:29,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:29,549 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:29,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:29,556 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:38:29,556 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:38:29,557 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 18:38:29,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:38:29,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 18:38:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:38:29,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7063 transitions. [2020-01-16 18:38:29,622 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7063 transitions. Word has length 28 [2020-01-16 18:38:29,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:29,623 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7063 transitions. [2020-01-16 18:38:29,623 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7063 transitions. [2020-01-16 18:38:29,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:29,625 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:29,625 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 18:38:29,625 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 18:38:29,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:29,625 INFO L82 PathProgramCache]: Analyzing trace with hash -651762734, now seen corresponding path program 490 times [2020-01-16 18:38:29,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:29,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2315750] [2020-01-16 18:38:29,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:30,228 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:30,235 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 18:38:30,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2315750] [2020-01-16 18:38:30,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:30,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:30,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059350324] [2020-01-16 18:38:30,236 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:30,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:30,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:30,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:30,236 INFO L87 Difference]: Start difference. First operand 1577 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:38:30,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:30,460 INFO L93 Difference]: Finished difference Result 2952 states and 11727 transitions. [2020-01-16 18:38:30,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:30,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:30,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:30,468 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:38:30,468 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:38:30,469 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 18:38:30,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:38:30,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1573. [2020-01-16 18:38:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:38:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7052 transitions. [2020-01-16 18:38:30,534 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7052 transitions. Word has length 28 [2020-01-16 18:38:30,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:30,535 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7052 transitions. [2020-01-16 18:38:30,535 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:30,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7052 transitions. [2020-01-16 18:38:30,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:30,537 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:30,537 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:30,537 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 18:38:30,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:30,537 INFO L82 PathProgramCache]: Analyzing trace with hash -408690810, now seen corresponding path program 491 times [2020-01-16 18:38:30,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:30,538 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989695692] [2020-01-16 18:38:30,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:31,001 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-01-16 18:38:31,128 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:31,134 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989695692] [2020-01-16 18:38:31,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:31,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:31,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529724026] [2020-01-16 18:38:31,135 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:31,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:31,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:31,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:31,135 INFO L87 Difference]: Start difference. First operand 1573 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:38:31,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:31,289 INFO L93 Difference]: Finished difference Result 2964 states and 11749 transitions. [2020-01-16 18:38:31,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:31,289 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:31,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:31,296 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:38:31,297 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:38:31,297 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 18:38:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:38:31,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1578. [2020-01-16 18:38:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:38:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7060 transitions. [2020-01-16 18:38:31,363 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7060 transitions. Word has length 28 [2020-01-16 18:38:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:31,363 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7060 transitions. [2020-01-16 18:38:31,363 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:31,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7060 transitions. [2020-01-16 18:38:31,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:31,365 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:31,365 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 18:38:31,365 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 18:38:31,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:31,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1724848114, now seen corresponding path program 492 times [2020-01-16 18:38:31,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:31,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606469356] [2020-01-16 18:38:31,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:31,960 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:31,966 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 18:38:31,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606469356] [2020-01-16 18:38:31,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:31,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:31,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222193953] [2020-01-16 18:38:31,966 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:31,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:31,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:31,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:31,967 INFO L87 Difference]: Start difference. First operand 1578 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:38:32,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:32,172 INFO L93 Difference]: Finished difference Result 2958 states and 11733 transitions. [2020-01-16 18:38:32,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:32,172 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:32,180 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:38:32,180 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:38:32,180 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 18:38:32,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:38:32,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1568. [2020-01-16 18:38:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:38:32,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7038 transitions. [2020-01-16 18:38:32,246 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7038 transitions. Word has length 28 [2020-01-16 18:38:32,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:32,246 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7038 transitions. [2020-01-16 18:38:32,246 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:32,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7038 transitions. [2020-01-16 18:38:32,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:32,248 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:32,248 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 18:38:32,248 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 18:38:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:32,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1331663438, now seen corresponding path program 493 times [2020-01-16 18:38:32,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:32,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152468443] [2020-01-16 18:38:32,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:32,861 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:32,867 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152468443] [2020-01-16 18:38:32,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:32,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:32,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891754490] [2020-01-16 18:38:32,867 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:32,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:32,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:32,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:32,868 INFO L87 Difference]: Start difference. First operand 1568 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:38:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:33,057 INFO L93 Difference]: Finished difference Result 2953 states and 11734 transitions. [2020-01-16 18:38:33,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:33,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:33,065 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:38:33,066 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:38:33,066 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 18:38:33,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:38:33,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 18:38:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:38:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7062 transitions. [2020-01-16 18:38:33,132 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7062 transitions. Word has length 28 [2020-01-16 18:38:33,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:33,132 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7062 transitions. [2020-01-16 18:38:33,132 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:33,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7062 transitions. [2020-01-16 18:38:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:33,134 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:33,134 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 18:38:33,134 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 18:38:33,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:33,135 INFO L82 PathProgramCache]: Analyzing trace with hash -729196364, now seen corresponding path program 494 times [2020-01-16 18:38:33,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:33,135 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825987592] [2020-01-16 18:38:33,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:33,731 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:33,738 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 18:38:33,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825987592] [2020-01-16 18:38:33,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:33,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:33,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751074897] [2020-01-16 18:38:33,739 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:33,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:33,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:33,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:33,739 INFO L87 Difference]: Start difference. First operand 1577 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:38:33,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:33,931 INFO L93 Difference]: Finished difference Result 2956 states and 11735 transitions. [2020-01-16 18:38:33,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:33,932 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:33,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:33,939 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:38:33,940 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:38:33,940 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 18:38:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:38:34,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1572. [2020-01-16 18:38:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:38:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7049 transitions. [2020-01-16 18:38:34,006 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7049 transitions. Word has length 28 [2020-01-16 18:38:34,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:34,006 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7049 transitions. [2020-01-16 18:38:34,006 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7049 transitions. [2020-01-16 18:38:34,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:34,008 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:34,008 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 18:38:34,008 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 18:38:34,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:34,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1869519016, now seen corresponding path program 495 times [2020-01-16 18:38:34,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:34,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617592530] [2020-01-16 18:38:34,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:34,479 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:38:34,603 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:34,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:34,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617592530] [2020-01-16 18:38:34,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:34,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:34,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420523200] [2020-01-16 18:38:34,611 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:34,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:34,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:34,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:34,611 INFO L87 Difference]: Start difference. First operand 1572 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:38:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:34,799 INFO L93 Difference]: Finished difference Result 2948 states and 11719 transitions. [2020-01-16 18:38:34,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:34,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:34,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:34,805 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:38:34,806 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:38:34,806 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 18:38:34,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:38:34,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1576. [2020-01-16 18:38:34,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:38:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7056 transitions. [2020-01-16 18:38:34,874 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7056 transitions. Word has length 28 [2020-01-16 18:38:34,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:34,875 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7056 transitions. [2020-01-16 18:38:34,875 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:34,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7056 transitions. [2020-01-16 18:38:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:34,877 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:34,877 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 18:38:34,877 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 18:38:34,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:34,877 INFO L82 PathProgramCache]: Analyzing trace with hash 2042766708, now seen corresponding path program 496 times [2020-01-16 18:38:34,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:34,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567640799] [2020-01-16 18:38:34,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:35,479 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:38:35,486 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 18:38:35,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567640799] [2020-01-16 18:38:35,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:35,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:35,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354670713] [2020-01-16 18:38:35,487 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:35,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:35,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:35,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:35,487 INFO L87 Difference]: Start difference. First operand 1576 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:38:35,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:35,683 INFO L93 Difference]: Finished difference Result 2947 states and 11713 transitions. [2020-01-16 18:38:35,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:35,684 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:35,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:35,691 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:38:35,692 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 18:38:35,692 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 18:38:35,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 18:38:35,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1572. [2020-01-16 18:38:35,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:38:35,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7045 transitions. [2020-01-16 18:38:35,758 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7045 transitions. Word has length 28 [2020-01-16 18:38:35,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:35,758 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7045 transitions. [2020-01-16 18:38:35,758 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:35,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7045 transitions. [2020-01-16 18:38:35,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:35,760 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:35,760 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:35,760 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 18:38:35,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:35,760 INFO L82 PathProgramCache]: Analyzing trace with hash 346514792, now seen corresponding path program 497 times [2020-01-16 18:38:35,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:35,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193048459] [2020-01-16 18:38:35,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:36,216 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:38:36,347 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:38:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:36,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193048459] [2020-01-16 18:38:36,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:36,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:36,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602600874] [2020-01-16 18:38:36,354 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:36,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:36,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:36,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:36,355 INFO L87 Difference]: Start difference. First operand 1572 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:38:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:36,565 INFO L93 Difference]: Finished difference Result 2954 states and 11727 transitions. [2020-01-16 18:38:36,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:36,566 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:36,573 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 18:38:36,573 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:38:36,573 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:38:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:38:36,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1576. [2020-01-16 18:38:36,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:38:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7052 transitions. [2020-01-16 18:38:36,639 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7052 transitions. Word has length 28 [2020-01-16 18:38:36,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:36,639 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7052 transitions. [2020-01-16 18:38:36,639 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:36,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7052 transitions. [2020-01-16 18:38:36,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:36,641 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:36,641 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 18:38:36,642 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 18:38:36,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:36,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1714345010, now seen corresponding path program 498 times [2020-01-16 18:38:36,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:36,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672717950] [2020-01-16 18:38:36,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:37,106 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:38:37,238 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:38:37,245 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 18:38:37,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672717950] [2020-01-16 18:38:37,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:37,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:37,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384571335] [2020-01-16 18:38:37,246 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:37,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:37,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:37,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:37,247 INFO L87 Difference]: Start difference. First operand 1576 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:38:37,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:37,439 INFO L93 Difference]: Finished difference Result 2950 states and 11715 transitions. [2020-01-16 18:38:37,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:37,439 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:37,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:37,446 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:38:37,447 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:38:37,447 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 18:38:37,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:38:37,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1568. [2020-01-16 18:38:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:38:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7034 transitions. [2020-01-16 18:38:37,515 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7034 transitions. Word has length 28 [2020-01-16 18:38:37,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:37,515 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7034 transitions. [2020-01-16 18:38:37,515 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:37,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7034 transitions. [2020-01-16 18:38:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:37,517 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:37,517 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:37,517 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 18:38:37,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:37,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1452892654, now seen corresponding path program 499 times [2020-01-16 18:38:37,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:37,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680062775] [2020-01-16 18:38:37,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:38,002 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-01-16 18:38:38,133 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:38,139 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 18:38:38,139 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680062775] [2020-01-16 18:38:38,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:38,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:38,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763942569] [2020-01-16 18:38:38,139 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:38,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:38,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:38,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:38,140 INFO L87 Difference]: Start difference. First operand 1568 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:38:38,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:38,294 INFO L93 Difference]: Finished difference Result 2981 states and 11788 transitions. [2020-01-16 18:38:38,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:38,294 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:38,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:38,302 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:38:38,302 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:38:38,302 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 18:38:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:38:38,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1584. [2020-01-16 18:38:38,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:38:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7071 transitions. [2020-01-16 18:38:38,400 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7071 transitions. Word has length 28 [2020-01-16 18:38:38,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:38,400 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7071 transitions. [2020-01-16 18:38:38,400 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7071 transitions. [2020-01-16 18:38:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:38,403 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:38,403 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 18:38:38,403 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 18:38:38,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:38,403 INFO L82 PathProgramCache]: Analyzing trace with hash -708190156, now seen corresponding path program 500 times [2020-01-16 18:38:38,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:38,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788590936] [2020-01-16 18:38:38,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:39,013 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:38:39,021 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 18:38:39,021 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788590936] [2020-01-16 18:38:39,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:39,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:39,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27365540] [2020-01-16 18:38:39,021 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:39,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:39,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:39,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:39,022 INFO L87 Difference]: Start difference. First operand 1584 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:38:39,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:39,208 INFO L93 Difference]: Finished difference Result 2979 states and 11776 transitions. [2020-01-16 18:38:39,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:39,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:39,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:39,216 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:38:39,217 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:38:39,217 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 18:38:39,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:38:39,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1574. [2020-01-16 18:38:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:38:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7048 transitions. [2020-01-16 18:38:39,284 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7048 transitions. Word has length 28 [2020-01-16 18:38:39,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:39,284 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7048 transitions. [2020-01-16 18:38:39,284 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:39,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7048 transitions. [2020-01-16 18:38:39,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:39,286 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:39,287 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 18:38:39,287 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 18:38:39,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:39,287 INFO L82 PathProgramCache]: Analyzing trace with hash -915037076, now seen corresponding path program 501 times [2020-01-16 18:38:39,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:39,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847941923] [2020-01-16 18:38:39,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:39,748 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-01-16 18:38:39,875 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:39,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847941923] [2020-01-16 18:38:39,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:39,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:39,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202588429] [2020-01-16 18:38:39,882 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:39,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:39,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:39,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:39,883 INFO L87 Difference]: Start difference. First operand 1574 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:38:40,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:40,032 INFO L93 Difference]: Finished difference Result 2972 states and 11761 transitions. [2020-01-16 18:38:40,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:40,033 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:40,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:40,041 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:38:40,041 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:38:40,041 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 18:38:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:38:40,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1579. [2020-01-16 18:38:40,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:38:40,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7056 transitions. [2020-01-16 18:38:40,107 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7056 transitions. Word has length 28 [2020-01-16 18:38:40,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:40,107 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7056 transitions. [2020-01-16 18:38:40,107 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:40,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7056 transitions. [2020-01-16 18:38:40,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:40,109 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:40,110 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 18:38:40,110 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 18:38:40,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:40,110 INFO L82 PathProgramCache]: Analyzing trace with hash 2063772916, now seen corresponding path program 502 times [2020-01-16 18:38:40,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:40,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262447623] [2020-01-16 18:38:40,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:40,686 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:40,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262447623] [2020-01-16 18:38:40,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:40,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:40,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795216959] [2020-01-16 18:38:40,693 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:40,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:40,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:40,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:40,693 INFO L87 Difference]: Start difference. First operand 1579 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:38:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:40,880 INFO L93 Difference]: Finished difference Result 2966 states and 11745 transitions. [2020-01-16 18:38:40,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:40,880 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:40,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:40,888 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:38:40,888 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:38:40,888 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 18:38:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:38:40,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1574. [2020-01-16 18:38:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:38:40,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7043 transitions. [2020-01-16 18:38:40,955 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7043 transitions. Word has length 28 [2020-01-16 18:38:40,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:40,955 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7043 transitions. [2020-01-16 18:38:40,956 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:40,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7043 transitions. [2020-01-16 18:38:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:40,958 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:40,958 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 18:38:40,958 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 18:38:40,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:40,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1440606380, now seen corresponding path program 503 times [2020-01-16 18:38:40,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:40,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212031514] [2020-01-16 18:38:40,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:41,419 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:38:41,548 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:38:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:41,556 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212031514] [2020-01-16 18:38:41,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:41,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:41,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447855115] [2020-01-16 18:38:41,557 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:41,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:41,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:41,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:41,557 INFO L87 Difference]: Start difference. First operand 1574 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:38:41,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:41,751 INFO L93 Difference]: Finished difference Result 2967 states and 11748 transitions. [2020-01-16 18:38:41,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:41,751 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:41,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:41,758 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:38:41,758 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 18:38:41,758 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 18:38:41,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 18:38:41,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1578. [2020-01-16 18:38:41,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:38:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7050 transitions. [2020-01-16 18:38:41,824 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7050 transitions. Word has length 28 [2020-01-16 18:38:41,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:41,824 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7050 transitions. [2020-01-16 18:38:41,824 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7050 transitions. [2020-01-16 18:38:41,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:41,827 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:41,827 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:41,827 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 18:38:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:41,827 INFO L82 PathProgramCache]: Analyzing trace with hash -620253422, now seen corresponding path program 504 times [2020-01-16 18:38:41,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:41,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370452411] [2020-01-16 18:38:41,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:42,286 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:38:42,413 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:38:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:42,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370452411] [2020-01-16 18:38:42,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:42,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:42,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828334677] [2020-01-16 18:38:42,421 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:42,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:42,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:42,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:42,422 INFO L87 Difference]: Start difference. First operand 1578 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:38:42,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:42,623 INFO L93 Difference]: Finished difference Result 2963 states and 11736 transitions. [2020-01-16 18:38:42,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:42,623 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:42,631 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:38:42,631 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:38:42,631 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 18:38:42,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:38:42,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1562. [2020-01-16 18:38:42,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 18:38:42,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7017 transitions. [2020-01-16 18:38:42,700 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7017 transitions. Word has length 28 [2020-01-16 18:38:42,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:42,700 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7017 transitions. [2020-01-16 18:38:42,700 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7017 transitions. [2020-01-16 18:38:42,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:42,703 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:42,703 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:42,703 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 18:38:42,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:42,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1384607460, now seen corresponding path program 505 times [2020-01-16 18:38:42,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:42,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820558443] [2020-01-16 18:38:42,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:43,176 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:38:43,304 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:38:43,311 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 18:38:43,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820558443] [2020-01-16 18:38:43,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:43,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:43,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858411342] [2020-01-16 18:38:43,312 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:43,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:43,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:43,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:43,312 INFO L87 Difference]: Start difference. First operand 1562 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:38:43,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:43,541 INFO L93 Difference]: Finished difference Result 2991 states and 11839 transitions. [2020-01-16 18:38:43,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:43,542 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:43,550 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:38:43,550 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 18:38:43,550 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 18:38:43,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 18:38:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1583. [2020-01-16 18:38:43,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:38:43,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7085 transitions. [2020-01-16 18:38:43,616 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7085 transitions. Word has length 28 [2020-01-16 18:38:43,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:43,616 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7085 transitions. [2020-01-16 18:38:43,616 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:43,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7085 transitions. [2020-01-16 18:38:43,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:43,618 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:43,619 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 18:38:43,619 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 18:38:43,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:43,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1420954840, now seen corresponding path program 506 times [2020-01-16 18:38:43,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:43,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008258918] [2020-01-16 18:38:43,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:44,103 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:38:44,233 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:38:44,239 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 18:38:44,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008258918] [2020-01-16 18:38:44,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:44,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:44,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547480993] [2020-01-16 18:38:44,240 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:44,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:44,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:44,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:44,241 INFO L87 Difference]: Start difference. First operand 1583 states and 7085 transitions. Second operand 11 states. [2020-01-16 18:38:44,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:44,395 INFO L93 Difference]: Finished difference Result 2996 states and 11843 transitions. [2020-01-16 18:38:44,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:44,396 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:44,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:44,403 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:38:44,404 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:38:44,404 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 18:38:44,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:38:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1577. [2020-01-16 18:38:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:38:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7068 transitions. [2020-01-16 18:38:44,503 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7068 transitions. Word has length 28 [2020-01-16 18:38:44,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:44,503 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7068 transitions. [2020-01-16 18:38:44,503 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:44,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7068 transitions. [2020-01-16 18:38:44,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:44,505 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:44,505 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:44,505 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 18:38:44,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:44,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1299418878, now seen corresponding path program 507 times [2020-01-16 18:38:44,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:44,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164817793] [2020-01-16 18:38:44,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:45,105 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:45,112 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 18:38:45,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164817793] [2020-01-16 18:38:45,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:45,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:45,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592410296] [2020-01-16 18:38:45,112 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:45,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:45,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:45,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:45,113 INFO L87 Difference]: Start difference. First operand 1577 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:38:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:45,345 INFO L93 Difference]: Finished difference Result 2988 states and 11828 transitions. [2020-01-16 18:38:45,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:45,345 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:45,353 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:38:45,353 INFO L226 Difference]: Without dead ends: 2973 [2020-01-16 18:38:45,353 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 18:38:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-01-16 18:38:45,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1582. [2020-01-16 18:38:45,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:38:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7077 transitions. [2020-01-16 18:38:45,421 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7077 transitions. Word has length 28 [2020-01-16 18:38:45,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:45,421 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7077 transitions. [2020-01-16 18:38:45,421 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:45,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7077 transitions. [2020-01-16 18:38:45,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:45,423 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:45,424 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:45,424 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 18:38:45,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:45,424 INFO L82 PathProgramCache]: Analyzing trace with hash 934688616, now seen corresponding path program 508 times [2020-01-16 18:38:45,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:45,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972768172] [2020-01-16 18:38:45,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:46,016 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:46,024 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 18:38:46,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972768172] [2020-01-16 18:38:46,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:46,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:46,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958348092] [2020-01-16 18:38:46,024 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:46,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:46,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:46,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:46,025 INFO L87 Difference]: Start difference. First operand 1582 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:38:46,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:46,254 INFO L93 Difference]: Finished difference Result 2991 states and 11829 transitions. [2020-01-16 18:38:46,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:46,254 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:46,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:46,261 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:38:46,262 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:38:46,262 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 18:38:46,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:38:46,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1577. [2020-01-16 18:38:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:38:46,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7063 transitions. [2020-01-16 18:38:46,329 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7063 transitions. Word has length 28 [2020-01-16 18:38:46,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:46,329 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7063 transitions. [2020-01-16 18:38:46,329 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:46,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7063 transitions. [2020-01-16 18:38:46,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:46,331 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:46,332 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:46,332 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 18:38:46,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:46,332 INFO L82 PathProgramCache]: Analyzing trace with hash -883099262, now seen corresponding path program 509 times [2020-01-16 18:38:46,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:46,332 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064177656] [2020-01-16 18:38:46,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:46,817 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:38:46,944 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:38:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:46,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064177656] [2020-01-16 18:38:46,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:46,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:46,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15773036] [2020-01-16 18:38:46,951 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:46,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:46,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:46,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:46,952 INFO L87 Difference]: Start difference. First operand 1577 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:38:47,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:47,192 INFO L93 Difference]: Finished difference Result 3003 states and 11853 transitions. [2020-01-16 18:38:47,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:47,193 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:47,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:47,200 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:38:47,201 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:38:47,201 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:38:47,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:38:47,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1587. [2020-01-16 18:38:47,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:38:47,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7080 transitions. [2020-01-16 18:38:47,267 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7080 transitions. Word has length 28 [2020-01-16 18:38:47,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:47,267 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7080 transitions. [2020-01-16 18:38:47,267 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:47,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7080 transitions. [2020-01-16 18:38:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:47,270 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:47,270 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 18:38:47,270 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 18:38:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:47,270 INFO L82 PathProgramCache]: Analyzing trace with hash -138396764, now seen corresponding path program 510 times [2020-01-16 18:38:47,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:47,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502055377] [2020-01-16 18:38:47,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:47,759 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:38:47,887 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:47,894 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502055377] [2020-01-16 18:38:47,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:47,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:47,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6177993] [2020-01-16 18:38:47,895 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:47,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:47,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:47,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:47,895 INFO L87 Difference]: Start difference. First operand 1587 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:38:48,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:48,156 INFO L93 Difference]: Finished difference Result 3001 states and 11841 transitions. [2020-01-16 18:38:48,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:48,157 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:48,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:48,164 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:38:48,165 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:38:48,165 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 18:38:48,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:38:48,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1570. [2020-01-16 18:38:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:38:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7043 transitions. [2020-01-16 18:38:48,230 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7043 transitions. Word has length 28 [2020-01-16 18:38:48,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:48,230 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7043 transitions. [2020-01-16 18:38:48,230 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7043 transitions. [2020-01-16 18:38:48,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:48,232 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:48,232 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:48,232 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 18:38:48,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:48,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1972352782, now seen corresponding path program 511 times [2020-01-16 18:38:48,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:48,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043728659] [2020-01-16 18:38:48,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:48,705 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:38:48,829 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:38:48,835 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 18:38:48,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043728659] [2020-01-16 18:38:48,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:48,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:48,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011157951] [2020-01-16 18:38:48,836 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:48,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:48,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:48,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:48,836 INFO L87 Difference]: Start difference. First operand 1570 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:38:49,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:49,052 INFO L93 Difference]: Finished difference Result 2987 states and 11824 transitions. [2020-01-16 18:38:49,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:49,053 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:49,060 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 18:38:49,060 INFO L226 Difference]: Without dead ends: 2972 [2020-01-16 18:38:49,060 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:38:49,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-01-16 18:38:49,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1582. [2020-01-16 18:38:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:38:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7076 transitions. [2020-01-16 18:38:49,127 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7076 transitions. Word has length 28 [2020-01-16 18:38:49,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:49,127 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7076 transitions. [2020-01-16 18:38:49,127 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:49,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7076 transitions. [2020-01-16 18:38:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:49,129 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:49,129 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 18:38:49,130 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 18:38:49,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:49,130 INFO L82 PathProgramCache]: Analyzing trace with hash -833209518, now seen corresponding path program 512 times [2020-01-16 18:38:49,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:49,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402551309] [2020-01-16 18:38:49,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:49,617 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:38:49,743 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:38:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:49,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402551309] [2020-01-16 18:38:49,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:49,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:49,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140171969] [2020-01-16 18:38:49,751 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:49,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:49,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:49,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:49,751 INFO L87 Difference]: Start difference. First operand 1582 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:38:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:49,943 INFO L93 Difference]: Finished difference Result 2992 states and 11828 transitions. [2020-01-16 18:38:49,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:49,944 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:49,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:49,950 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:38:49,950 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:38:49,950 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 18:38:49,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:38:50,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1576. [2020-01-16 18:38:50,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:38:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7059 transitions. [2020-01-16 18:38:50,016 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7059 transitions. Word has length 28 [2020-01-16 18:38:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:50,016 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7059 transitions. [2020-01-16 18:38:50,016 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:50,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7059 transitions. [2020-01-16 18:38:50,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:50,018 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:50,018 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 18:38:50,018 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 18:38:50,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:50,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1246903358, now seen corresponding path program 513 times [2020-01-16 18:38:50,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:50,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143609375] [2020-01-16 18:38:50,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:50,612 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:38:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:50,619 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143609375] [2020-01-16 18:38:50,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:50,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:50,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130070956] [2020-01-16 18:38:50,620 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:50,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:50,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:50,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:50,620 INFO L87 Difference]: Start difference. First operand 1576 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:38:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:50,822 INFO L93 Difference]: Finished difference Result 2983 states and 11811 transitions. [2020-01-16 18:38:50,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:50,823 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:50,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:50,852 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:38:50,853 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:38:50,853 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:38:50,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:38:50,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1581. [2020-01-16 18:38:50,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:38:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7068 transitions. [2020-01-16 18:38:50,916 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7068 transitions. Word has length 28 [2020-01-16 18:38:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:50,916 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7068 transitions. [2020-01-16 18:38:50,916 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7068 transitions. [2020-01-16 18:38:50,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:50,918 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:50,918 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 18:38:50,918 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 18:38:50,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:50,919 INFO L82 PathProgramCache]: Analyzing trace with hash 415749330, now seen corresponding path program 514 times [2020-01-16 18:38:50,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:50,919 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293494426] [2020-01-16 18:38:50,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:51,382 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2020-01-16 18:38:51,506 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:38:51,513 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 18:38:51,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293494426] [2020-01-16 18:38:51,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:51,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:51,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677888863] [2020-01-16 18:38:51,514 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:51,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:51,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:51,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:51,514 INFO L87 Difference]: Start difference. First operand 1581 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:38:51,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:51,724 INFO L93 Difference]: Finished difference Result 2985 states and 11810 transitions. [2020-01-16 18:38:51,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:51,725 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:51,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:51,732 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:38:51,732 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 18:38:51,732 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 18:38:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 18:38:51,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1576. [2020-01-16 18:38:51,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:38:51,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7054 transitions. [2020-01-16 18:38:51,798 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7054 transitions. Word has length 28 [2020-01-16 18:38:51,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:51,798 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7054 transitions. [2020-01-16 18:38:51,798 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:51,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7054 transitions. [2020-01-16 18:38:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:51,801 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:51,801 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:51,801 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 18:38:51,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:51,801 INFO L82 PathProgramCache]: Analyzing trace with hash -830583742, now seen corresponding path program 515 times [2020-01-16 18:38:51,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:51,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918664922] [2020-01-16 18:38:51,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:52,264 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:38:52,390 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:38:52,396 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 18:38:52,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918664922] [2020-01-16 18:38:52,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:52,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:52,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039176396] [2020-01-16 18:38:52,397 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:52,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:52,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:52,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:52,397 INFO L87 Difference]: Start difference. First operand 1576 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:38:52,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:52,593 INFO L93 Difference]: Finished difference Result 2996 states and 11832 transitions. [2020-01-16 18:38:52,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:52,593 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:52,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:52,601 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:38:52,601 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 18:38:52,602 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 18:38:52,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 18:38:52,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1584. [2020-01-16 18:38:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:38:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7068 transitions. [2020-01-16 18:38:52,667 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7068 transitions. Word has length 28 [2020-01-16 18:38:52,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:52,667 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7068 transitions. [2020-01-16 18:38:52,667 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:52,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7068 transitions. [2020-01-16 18:38:52,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:52,669 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:52,669 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 18:38:52,669 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 18:38:52,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:52,670 INFO L82 PathProgramCache]: Analyzing trace with hash -657336050, now seen corresponding path program 516 times [2020-01-16 18:38:52,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:52,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252111487] [2020-01-16 18:38:52,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:53,262 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:38:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:53,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252111487] [2020-01-16 18:38:53,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:53,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:53,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683125080] [2020-01-16 18:38:53,270 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:53,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:53,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:53,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:53,270 INFO L87 Difference]: Start difference. First operand 1584 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:38:53,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:53,529 INFO L93 Difference]: Finished difference Result 2993 states and 11819 transitions. [2020-01-16 18:38:53,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:53,529 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:53,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:53,536 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:38:53,536 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:38:53,536 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 18:38:53,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:38:53,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1570. [2020-01-16 18:38:53,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:38:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7037 transitions. [2020-01-16 18:38:53,602 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7037 transitions. Word has length 28 [2020-01-16 18:38:53,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:53,602 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7037 transitions. [2020-01-16 18:38:53,602 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:53,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7037 transitions. [2020-01-16 18:38:53,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:53,604 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:53,604 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 18:38:53,604 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 18:38:53,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:53,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1982855886, now seen corresponding path program 517 times [2020-01-16 18:38:53,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:53,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197450515] [2020-01-16 18:38:53,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:54,080 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:38:54,208 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:54,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197450515] [2020-01-16 18:38:54,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:54,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:54,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10962719] [2020-01-16 18:38:54,216 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:54,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:54,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:54,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:54,216 INFO L87 Difference]: Start difference. First operand 1570 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:38:54,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:54,503 INFO L93 Difference]: Finished difference Result 2979 states and 11803 transitions. [2020-01-16 18:38:54,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:54,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:54,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:54,511 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:38:54,511 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:38:54,511 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:38:54,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:38:54,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1580. [2020-01-16 18:38:54,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:38:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7065 transitions. [2020-01-16 18:38:54,577 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7065 transitions. Word has length 28 [2020-01-16 18:38:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:54,577 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7065 transitions. [2020-01-16 18:38:54,577 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:54,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7065 transitions. [2020-01-16 18:38:54,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:54,579 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:54,579 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 18:38:54,579 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 18:38:54,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:54,579 INFO L82 PathProgramCache]: Analyzing trace with hash -78003916, now seen corresponding path program 518 times [2020-01-16 18:38:54,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:54,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784426764] [2020-01-16 18:38:54,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:55,051 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:38:55,177 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:38:55,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784426764] [2020-01-16 18:38:55,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:55,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:55,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39241491] [2020-01-16 18:38:55,184 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:55,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:55,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:55,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:55,185 INFO L87 Difference]: Start difference. First operand 1580 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:38:55,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:55,378 INFO L93 Difference]: Finished difference Result 2982 states and 11804 transitions. [2020-01-16 18:38:55,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:55,379 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:55,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:55,387 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:38:55,387 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:38:55,387 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 18:38:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:38:55,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1575. [2020-01-16 18:38:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:38:55,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7051 transitions. [2020-01-16 18:38:55,453 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7051 transitions. Word has length 28 [2020-01-16 18:38:55,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:55,453 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7051 transitions. [2020-01-16 18:38:55,453 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7051 transitions. [2020-01-16 18:38:55,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:55,455 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:55,455 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 18:38:55,455 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 18:38:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:55,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1447626084, now seen corresponding path program 519 times [2020-01-16 18:38:55,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:55,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711830487] [2020-01-16 18:38:55,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:55,924 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:38:56,051 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:38:56,057 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 18:38:56,057 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711830487] [2020-01-16 18:38:56,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:56,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:56,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615004404] [2020-01-16 18:38:56,058 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:56,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:56,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:56,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:56,058 INFO L87 Difference]: Start difference. First operand 1575 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:38:56,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:56,254 INFO L93 Difference]: Finished difference Result 2978 states and 11796 transitions. [2020-01-16 18:38:56,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:56,255 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:56,262 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:38:56,263 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 18:38:56,263 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 18:38:56,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 18:38:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1580. [2020-01-16 18:38:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:38:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7060 transitions. [2020-01-16 18:38:56,329 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7060 transitions. Word has length 28 [2020-01-16 18:38:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:56,329 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7060 transitions. [2020-01-16 18:38:56,329 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:56,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7060 transitions. [2020-01-16 18:38:56,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:56,331 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:56,331 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:56,331 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 18:38:56,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:56,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1184688524, now seen corresponding path program 520 times [2020-01-16 18:38:56,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:56,332 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755209497] [2020-01-16 18:38:56,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:56,792 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:38:56,917 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:38:56,924 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 18:38:56,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755209497] [2020-01-16 18:38:56,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:56,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:56,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530701142] [2020-01-16 18:38:56,925 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:56,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:56,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:56,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:56,925 INFO L87 Difference]: Start difference. First operand 1580 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:38:57,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:57,147 INFO L93 Difference]: Finished difference Result 2980 states and 11795 transitions. [2020-01-16 18:38:57,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:57,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:57,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:57,156 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:38:57,156 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:38:57,156 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 18:38:57,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:38:57,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1575. [2020-01-16 18:38:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:38:57,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7046 transitions. [2020-01-16 18:38:57,221 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7046 transitions. Word has length 28 [2020-01-16 18:38:57,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:57,222 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7046 transitions. [2020-01-16 18:38:57,222 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:57,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7046 transitions. [2020-01-16 18:38:57,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:57,224 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:57,224 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:57,224 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 18:38:57,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:57,224 INFO L82 PathProgramCache]: Analyzing trace with hash -75378140, now seen corresponding path program 521 times [2020-01-16 18:38:57,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:57,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986716131] [2020-01-16 18:38:57,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:57,820 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:38:57,826 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 18:38:57,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986716131] [2020-01-16 18:38:57,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:57,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:57,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032267910] [2020-01-16 18:38:57,827 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:57,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:57,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:57,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:57,828 INFO L87 Difference]: Start difference. First operand 1575 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:38:58,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:58,031 INFO L93 Difference]: Finished difference Result 2986 states and 11809 transitions. [2020-01-16 18:38:58,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:58,031 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:58,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:58,038 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:38:58,038 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:38:58,039 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 18:38:58,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:38:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1582. [2020-01-16 18:38:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:38:58,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7059 transitions. [2020-01-16 18:38:58,104 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7059 transitions. Word has length 28 [2020-01-16 18:38:58,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:58,104 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7059 transitions. [2020-01-16 18:38:58,104 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:58,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7059 transitions. [2020-01-16 18:38:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:58,106 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:58,106 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:38:58,107 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 18:38:58,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:58,107 INFO L82 PathProgramCache]: Analyzing trace with hash -646832946, now seen corresponding path program 522 times [2020-01-16 18:38:58,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:58,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418307911] [2020-01-16 18:38:58,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:58,697 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:38:58,703 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 18:38:58,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418307911] [2020-01-16 18:38:58,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:58,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:58,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652804626] [2020-01-16 18:38:58,704 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:58,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:58,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:58,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:58,705 INFO L87 Difference]: Start difference. First operand 1582 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:38:58,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:58,928 INFO L93 Difference]: Finished difference Result 2985 states and 11800 transitions. [2020-01-16 18:38:58,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:58,928 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:58,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:58,936 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:38:58,936 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:38:58,936 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:38:58,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:38:58,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1570. [2020-01-16 18:38:58,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:38:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7032 transitions. [2020-01-16 18:38:59,002 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7032 transitions. Word has length 28 [2020-01-16 18:38:59,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:59,003 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7032 transitions. [2020-01-16 18:38:59,003 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:59,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7032 transitions. [2020-01-16 18:38:59,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:59,005 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:59,005 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 18:38:59,005 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 18:38:59,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:59,005 INFO L82 PathProgramCache]: Analyzing trace with hash -801700206, now seen corresponding path program 523 times [2020-01-16 18:38:59,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:59,005 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160970803] [2020-01-16 18:38:59,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:38:59,495 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:38:59,621 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:38:59,628 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 18:38:59,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160970803] [2020-01-16 18:38:59,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:38:59,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:38:59,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628702972] [2020-01-16 18:38:59,629 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:38:59,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:38:59,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:38:59,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:38:59,630 INFO L87 Difference]: Start difference. First operand 1570 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:38:59,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:38:59,784 INFO L93 Difference]: Finished difference Result 3012 states and 11871 transitions. [2020-01-16 18:38:59,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:38:59,784 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:38:59,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:38:59,791 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:38:59,791 INFO L226 Difference]: Without dead ends: 2992 [2020-01-16 18:38:59,791 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 18:38:59,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2020-01-16 18:38:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1590. [2020-01-16 18:38:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:38:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7082 transitions. [2020-01-16 18:38:59,857 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7082 transitions. Word has length 28 [2020-01-16 18:38:59,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:38:59,858 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7082 transitions. [2020-01-16 18:38:59,858 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:38:59,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7082 transitions. [2020-01-16 18:38:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:38:59,860 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:38:59,860 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 18:38:59,860 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 18:38:59,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:38:59,860 INFO L82 PathProgramCache]: Analyzing trace with hash -56997708, now seen corresponding path program 524 times [2020-01-16 18:38:59,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:38:59,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901460660] [2020-01-16 18:38:59,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:38:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:00,346 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:39:00,476 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:00,483 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 18:39:00,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901460660] [2020-01-16 18:39:00,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:00,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:00,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840071694] [2020-01-16 18:39:00,484 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:00,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:00,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:00,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:00,484 INFO L87 Difference]: Start difference. First operand 1590 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:39:00,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:00,681 INFO L93 Difference]: Finished difference Result 3010 states and 11859 transitions. [2020-01-16 18:39:00,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:00,682 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:00,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:00,690 INFO L225 Difference]: With dead ends: 3010 [2020-01-16 18:39:00,690 INFO L226 Difference]: Without dead ends: 2982 [2020-01-16 18:39:00,690 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 18:39:00,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2020-01-16 18:39:00,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1580. [2020-01-16 18:39:00,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:39:00,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7056 transitions. [2020-01-16 18:39:00,756 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7056 transitions. Word has length 28 [2020-01-16 18:39:00,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:00,756 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7056 transitions. [2020-01-16 18:39:00,756 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:00,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7056 transitions. [2020-01-16 18:39:00,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:00,758 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:00,758 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:00,758 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 18:39:00,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:00,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1336930008, now seen corresponding path program 525 times [2020-01-16 18:39:00,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:00,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772946422] [2020-01-16 18:39:00,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:01,266 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:39:01,393 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:01,400 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 18:39:01,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772946422] [2020-01-16 18:39:01,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:01,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:01,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003610072] [2020-01-16 18:39:01,401 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:01,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:01,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:01,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:01,401 INFO L87 Difference]: Start difference. First operand 1580 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:39:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:01,554 INFO L93 Difference]: Finished difference Result 3009 states and 11856 transitions. [2020-01-16 18:39:01,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:01,554 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:01,562 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:39:01,562 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 18:39:01,562 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 18:39:01,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 18:39:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1588. [2020-01-16 18:39:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:39:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7070 transitions. [2020-01-16 18:39:01,628 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7070 transitions. Word has length 28 [2020-01-16 18:39:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:01,628 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7070 transitions. [2020-01-16 18:39:01,628 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7070 transitions. [2020-01-16 18:39:01,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:01,631 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:01,631 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 18:39:01,631 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 18:39:01,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:01,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1163682316, now seen corresponding path program 526 times [2020-01-16 18:39:01,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:01,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843867170] [2020-01-16 18:39:01,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:02,226 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:02,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843867170] [2020-01-16 18:39:02,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:02,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:02,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65647383] [2020-01-16 18:39:02,233 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:02,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:02,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:02,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:02,234 INFO L87 Difference]: Start difference. First operand 1588 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:39:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:02,425 INFO L93 Difference]: Finished difference Result 3006 states and 11843 transitions. [2020-01-16 18:39:02,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:02,426 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:02,433 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:39:02,433 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:39:02,433 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 18:39:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:39:02,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1580. [2020-01-16 18:39:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:39:02,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7048 transitions. [2020-01-16 18:39:02,499 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7048 transitions. Word has length 28 [2020-01-16 18:39:02,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:02,499 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7048 transitions. [2020-01-16 18:39:02,499 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:02,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7048 transitions. [2020-01-16 18:39:02,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:02,501 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:02,501 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 18:39:02,501 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 18:39:02,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:02,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1018713448, now seen corresponding path program 527 times [2020-01-16 18:39:02,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:02,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363983086] [2020-01-16 18:39:02,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:03,108 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:03,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363983086] [2020-01-16 18:39:03,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:03,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:03,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4556363] [2020-01-16 18:39:03,115 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:03,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:03,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:03,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:03,116 INFO L87 Difference]: Start difference. First operand 1580 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:39:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:03,336 INFO L93 Difference]: Finished difference Result 3004 states and 11840 transitions. [2020-01-16 18:39:03,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:03,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:03,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:03,343 INFO L225 Difference]: With dead ends: 3004 [2020-01-16 18:39:03,343 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 18:39:03,343 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 18:39:03,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 18:39:03,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1587. [2020-01-16 18:39:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:39:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7061 transitions. [2020-01-16 18:39:03,409 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7061 transitions. Word has length 28 [2020-01-16 18:39:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:03,409 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7061 transitions. [2020-01-16 18:39:03,409 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:03,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7061 transitions. [2020-01-16 18:39:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:03,411 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:03,411 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 18:39:03,412 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 18:39:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:03,412 INFO L82 PathProgramCache]: Analyzing trace with hash 447258642, now seen corresponding path program 528 times [2020-01-16 18:39:03,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:03,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504842289] [2020-01-16 18:39:03,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:04,007 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:39:04,014 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 18:39:04,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504842289] [2020-01-16 18:39:04,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:04,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:04,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967441403] [2020-01-16 18:39:04,015 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:04,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:04,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:04,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:04,015 INFO L87 Difference]: Start difference. First operand 1587 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:39:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:04,205 INFO L93 Difference]: Finished difference Result 3003 states and 11831 transitions. [2020-01-16 18:39:04,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:04,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:04,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:04,213 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:39:04,213 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:39:04,214 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:39:04,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:39:04,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1562. [2020-01-16 18:39:04,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 18:39:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7010 transitions. [2020-01-16 18:39:04,278 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7010 transitions. Word has length 28 [2020-01-16 18:39:04,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:04,278 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7010 transitions. [2020-01-16 18:39:04,279 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:04,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7010 transitions. [2020-01-16 18:39:04,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:04,281 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:04,281 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 18:39:04,281 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 18:39:04,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:04,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1933571164, now seen corresponding path program 529 times [2020-01-16 18:39:04,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:04,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347958331] [2020-01-16 18:39:04,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:04,876 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:04,883 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347958331] [2020-01-16 18:39:04,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:04,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:04,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786335855] [2020-01-16 18:39:04,884 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:04,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:04,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:04,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:04,884 INFO L87 Difference]: Start difference. First operand 1562 states and 7010 transitions. Second operand 11 states. [2020-01-16 18:39:05,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:05,105 INFO L93 Difference]: Finished difference Result 2955 states and 11734 transitions. [2020-01-16 18:39:05,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:05,105 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:05,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:05,112 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:39:05,112 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:39:05,112 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 18:39:05,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:39:05,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1578. [2020-01-16 18:39:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:39:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7062 transitions. [2020-01-16 18:39:05,178 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7062 transitions. Word has length 28 [2020-01-16 18:39:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:05,178 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7062 transitions. [2020-01-16 18:39:05,178 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7062 transitions. [2020-01-16 18:39:05,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:05,180 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:05,180 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:05,181 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 18:39:05,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:05,181 INFO L82 PathProgramCache]: Analyzing trace with hash -444166168, now seen corresponding path program 530 times [2020-01-16 18:39:05,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:05,181 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864481245] [2020-01-16 18:39:05,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:05,636 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:39:05,761 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:05,768 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 18:39:05,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864481245] [2020-01-16 18:39:05,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:05,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:05,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699453767] [2020-01-16 18:39:05,769 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:05,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:05,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:05,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:05,769 INFO L87 Difference]: Start difference. First operand 1578 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:39:05,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:05,948 INFO L93 Difference]: Finished difference Result 2960 states and 11738 transitions. [2020-01-16 18:39:05,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:05,949 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:05,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:05,956 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 18:39:05,957 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:39:05,957 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 18:39:05,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:39:06,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1572. [2020-01-16 18:39:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:39:06,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7046 transitions. [2020-01-16 18:39:06,022 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7046 transitions. Word has length 28 [2020-01-16 18:39:06,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:06,022 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7046 transitions. [2020-01-16 18:39:06,022 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:06,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7046 transitions. [2020-01-16 18:39:06,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:06,024 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:06,025 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 18:39:06,025 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 18:39:06,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:06,025 INFO L82 PathProgramCache]: Analyzing trace with hash 215225372, now seen corresponding path program 531 times [2020-01-16 18:39:06,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:06,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851120723] [2020-01-16 18:39:06,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:06,610 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:06,617 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 18:39:06,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851120723] [2020-01-16 18:39:06,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:06,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:06,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887256934] [2020-01-16 18:39:06,617 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:06,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:06,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:06,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:06,618 INFO L87 Difference]: Start difference. First operand 1572 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:39:06,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:06,825 INFO L93 Difference]: Finished difference Result 2947 states and 11713 transitions. [2020-01-16 18:39:06,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:06,826 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:06,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:06,833 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:39:06,833 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:39:06,833 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 18:39:06,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:39:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1576. [2020-01-16 18:39:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:39:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7053 transitions. [2020-01-16 18:39:06,899 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7053 transitions. Word has length 28 [2020-01-16 18:39:06,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:06,899 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7053 transitions. [2020-01-16 18:39:06,899 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:06,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7053 transitions. [2020-01-16 18:39:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:06,901 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:06,901 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:06,902 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 18:39:06,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:06,902 INFO L82 PathProgramCache]: Analyzing trace with hash 388473064, now seen corresponding path program 532 times [2020-01-16 18:39:06,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:06,902 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209886721] [2020-01-16 18:39:06,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:07,491 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:07,499 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 18:39:07,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209886721] [2020-01-16 18:39:07,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:07,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:07,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26950150] [2020-01-16 18:39:07,499 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:07,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:07,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:07,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:07,500 INFO L87 Difference]: Start difference. First operand 1576 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:39:07,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:07,710 INFO L93 Difference]: Finished difference Result 2946 states and 11707 transitions. [2020-01-16 18:39:07,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:07,711 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:07,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:07,718 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:39:07,718 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:39:07,718 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 18:39:07,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:39:07,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1572. [2020-01-16 18:39:07,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:39:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7042 transitions. [2020-01-16 18:39:07,784 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7042 transitions. Word has length 28 [2020-01-16 18:39:07,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:07,784 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7042 transitions. [2020-01-16 18:39:07,784 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:07,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7042 transitions. [2020-01-16 18:39:07,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:07,786 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:07,786 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 18:39:07,786 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 18:39:07,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:07,786 INFO L82 PathProgramCache]: Analyzing trace with hash 631544988, now seen corresponding path program 533 times [2020-01-16 18:39:07,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:07,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069176891] [2020-01-16 18:39:07,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:08,247 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:39:08,374 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:08,381 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 18:39:08,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069176891] [2020-01-16 18:39:08,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:08,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:08,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412955210] [2020-01-16 18:39:08,382 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:08,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:08,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:08,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:08,382 INFO L87 Difference]: Start difference. First operand 1572 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:39:08,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:08,558 INFO L93 Difference]: Finished difference Result 2958 states and 11729 transitions. [2020-01-16 18:39:08,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:08,559 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:08,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:08,566 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:39:08,566 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:39:08,566 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 18:39:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:39:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 18:39:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:39:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7050 transitions. [2020-01-16 18:39:08,632 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7050 transitions. Word has length 28 [2020-01-16 18:39:08,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:08,632 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7050 transitions. [2020-01-16 18:39:08,632 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:08,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7050 transitions. [2020-01-16 18:39:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:08,634 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:08,634 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:08,635 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 18:39:08,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:08,635 INFO L82 PathProgramCache]: Analyzing trace with hash -684612316, now seen corresponding path program 534 times [2020-01-16 18:39:08,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:08,635 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785459509] [2020-01-16 18:39:08,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:09,211 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:09,218 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 18:39:09,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785459509] [2020-01-16 18:39:09,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:09,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:09,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338220169] [2020-01-16 18:39:09,218 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:09,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:09,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:09,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:09,219 INFO L87 Difference]: Start difference. First operand 1577 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:39:09,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:09,450 INFO L93 Difference]: Finished difference Result 2952 states and 11713 transitions. [2020-01-16 18:39:09,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:09,450 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:09,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:09,458 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:39:09,458 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:39:09,458 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 18:39:09,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:39:09,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1567. [2020-01-16 18:39:09,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:39:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7028 transitions. [2020-01-16 18:39:09,523 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7028 transitions. Word has length 28 [2020-01-16 18:39:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:09,523 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7028 transitions. [2020-01-16 18:39:09,523 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:09,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7028 transitions. [2020-01-16 18:39:09,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:09,525 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:09,525 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 18:39:09,526 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 18:39:09,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:09,526 INFO L82 PathProgramCache]: Analyzing trace with hash -839479576, now seen corresponding path program 535 times [2020-01-16 18:39:09,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:09,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32101742] [2020-01-16 18:39:09,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:09,995 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:39:10,122 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:10,128 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 18:39:10,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32101742] [2020-01-16 18:39:10,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:10,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:10,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441426803] [2020-01-16 18:39:10,129 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:10,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:10,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:10,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:10,130 INFO L87 Difference]: Start difference. First operand 1567 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:39:10,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:10,344 INFO L93 Difference]: Finished difference Result 2963 states and 11751 transitions. [2020-01-16 18:39:10,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:10,344 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:10,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:10,352 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:39:10,352 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:39:10,352 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 18:39:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:39:10,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1579. [2020-01-16 18:39:10,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:39:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7061 transitions. [2020-01-16 18:39:10,419 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7061 transitions. Word has length 28 [2020-01-16 18:39:10,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:10,419 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7061 transitions. [2020-01-16 18:39:10,419 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7061 transitions. [2020-01-16 18:39:10,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:10,421 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:10,421 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 18:39:10,422 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 18:39:10,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:10,422 INFO L82 PathProgramCache]: Analyzing trace with hash 649925420, now seen corresponding path program 536 times [2020-01-16 18:39:10,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:10,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280071365] [2020-01-16 18:39:10,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:10,890 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:39:11,017 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:11,023 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 18:39:11,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280071365] [2020-01-16 18:39:11,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:11,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:11,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923490532] [2020-01-16 18:39:11,024 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:11,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:11,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:11,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:11,024 INFO L87 Difference]: Start difference. First operand 1579 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:39:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:11,243 INFO L93 Difference]: Finished difference Result 2968 states and 11755 transitions. [2020-01-16 18:39:11,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:11,243 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:11,250 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:39:11,250 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:39:11,250 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 18:39:11,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:39:11,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1573. [2020-01-16 18:39:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:39:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 18:39:11,315 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 18:39:11,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:11,316 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 18:39:11,316 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 18:39:11,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:11,318 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:11,318 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:11,318 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 18:39:11,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:11,318 INFO L82 PathProgramCache]: Analyzing trace with hash 236231580, now seen corresponding path program 537 times [2020-01-16 18:39:11,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:11,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698979788] [2020-01-16 18:39:11,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:11,892 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:11,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698979788] [2020-01-16 18:39:11,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:11,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:11,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130207297] [2020-01-16 18:39:11,899 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:11,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:11,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:11,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:11,899 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:39:12,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:12,139 INFO L93 Difference]: Finished difference Result 2959 states and 11738 transitions. [2020-01-16 18:39:12,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:12,139 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:12,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:12,146 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:39:12,146 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:39:12,146 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 18:39:12,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:39:12,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1578. [2020-01-16 18:39:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:39:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7053 transitions. [2020-01-16 18:39:12,211 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7053 transitions. Word has length 28 [2020-01-16 18:39:12,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:12,211 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7053 transitions. [2020-01-16 18:39:12,211 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:12,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7053 transitions. [2020-01-16 18:39:12,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:12,213 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:12,213 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 18:39:12,214 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 18:39:12,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:12,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1898884268, now seen corresponding path program 538 times [2020-01-16 18:39:12,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:12,214 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387212812] [2020-01-16 18:39:12,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:12,792 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:12,799 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 18:39:12,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387212812] [2020-01-16 18:39:12,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:12,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:12,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695703813] [2020-01-16 18:39:12,800 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:12,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:12,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:12,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:12,800 INFO L87 Difference]: Start difference. First operand 1578 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:39:13,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:13,043 INFO L93 Difference]: Finished difference Result 2961 states and 11737 transitions. [2020-01-16 18:39:13,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:13,043 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:13,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:13,051 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:39:13,051 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:39:13,051 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:39:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:39:13,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1573. [2020-01-16 18:39:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:39:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7039 transitions. [2020-01-16 18:39:13,119 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7039 transitions. Word has length 28 [2020-01-16 18:39:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:13,119 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7039 transitions. [2020-01-16 18:39:13,119 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:13,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7039 transitions. [2020-01-16 18:39:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:13,122 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:13,122 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 18:39:13,122 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 18:39:13,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:13,122 INFO L82 PathProgramCache]: Analyzing trace with hash 652551196, now seen corresponding path program 539 times [2020-01-16 18:39:13,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:13,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549999430] [2020-01-16 18:39:13,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:13,589 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:39:13,715 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:13,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549999430] [2020-01-16 18:39:13,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:13,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:13,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433770334] [2020-01-16 18:39:13,722 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:13,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:13,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:13,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:13,722 INFO L87 Difference]: Start difference. First operand 1573 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:39:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:13,885 INFO L93 Difference]: Finished difference Result 2972 states and 11759 transitions. [2020-01-16 18:39:13,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:13,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:13,893 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:39:13,893 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:39:13,893 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 18:39:13,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:39:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1581. [2020-01-16 18:39:13,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:39:13,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7053 transitions. [2020-01-16 18:39:13,958 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7053 transitions. Word has length 28 [2020-01-16 18:39:13,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:13,958 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7053 transitions. [2020-01-16 18:39:13,958 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:13,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7053 transitions. [2020-01-16 18:39:13,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:13,960 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:13,960 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 18:39:13,960 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 18:39:13,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:13,961 INFO L82 PathProgramCache]: Analyzing trace with hash 825798888, now seen corresponding path program 540 times [2020-01-16 18:39:13,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:13,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212826837] [2020-01-16 18:39:13,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:14,547 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:14,554 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 18:39:14,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212826837] [2020-01-16 18:39:14,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:14,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:14,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76276134] [2020-01-16 18:39:14,554 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:14,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:14,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:14,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:14,555 INFO L87 Difference]: Start difference. First operand 1581 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:39:14,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:14,782 INFO L93 Difference]: Finished difference Result 2969 states and 11746 transitions. [2020-01-16 18:39:14,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:14,782 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:14,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:14,790 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 18:39:14,790 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:39:14,790 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 18:39:14,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:39:14,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1567. [2020-01-16 18:39:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:39:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7023 transitions. [2020-01-16 18:39:14,855 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7023 transitions. Word has length 28 [2020-01-16 18:39:14,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:14,856 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7023 transitions. [2020-01-16 18:39:14,856 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7023 transitions. [2020-01-16 18:39:14,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:14,858 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:14,858 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 18:39:14,858 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 18:39:14,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:14,858 INFO L82 PathProgramCache]: Analyzing trace with hash -797467160, now seen corresponding path program 541 times [2020-01-16 18:39:14,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:14,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301285567] [2020-01-16 18:39:14,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:15,321 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:39:15,447 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:15,454 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 18:39:15,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301285567] [2020-01-16 18:39:15,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:15,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:15,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738674733] [2020-01-16 18:39:15,455 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:15,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:15,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:15,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:15,455 INFO L87 Difference]: Start difference. First operand 1567 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:39:15,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:15,696 INFO L93 Difference]: Finished difference Result 2941 states and 11696 transitions. [2020-01-16 18:39:15,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:15,696 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:15,704 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:39:15,704 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:39:15,704 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 18:39:15,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:39:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1575. [2020-01-16 18:39:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:39:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7045 transitions. [2020-01-16 18:39:15,770 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7045 transitions. Word has length 28 [2020-01-16 18:39:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:15,770 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7045 transitions. [2020-01-16 18:39:15,770 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7045 transitions. [2020-01-16 18:39:15,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:15,773 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:15,774 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 18:39:15,774 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 18:39:15,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:15,774 INFO L82 PathProgramCache]: Analyzing trace with hash -624219468, now seen corresponding path program 542 times [2020-01-16 18:39:15,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:15,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027312892] [2020-01-16 18:39:15,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:16,248 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2020-01-16 18:39:16,376 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:16,382 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 18:39:16,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027312892] [2020-01-16 18:39:16,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:16,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:16,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075021425] [2020-01-16 18:39:16,382 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:16,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:16,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:16,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:16,383 INFO L87 Difference]: Start difference. First operand 1575 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:39:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:16,577 INFO L93 Difference]: Finished difference Result 2940 states and 11690 transitions. [2020-01-16 18:39:16,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:16,577 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:16,585 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:39:16,585 INFO L226 Difference]: Without dead ends: 2922 [2020-01-16 18:39:16,585 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 18:39:16,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-01-16 18:39:16,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1571. [2020-01-16 18:39:16,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:39:16,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7034 transitions. [2020-01-16 18:39:16,652 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7034 transitions. Word has length 28 [2020-01-16 18:39:16,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:16,652 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7034 transitions. [2020-01-16 18:39:16,653 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7034 transitions. [2020-01-16 18:39:16,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:16,655 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:16,655 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 18:39:16,655 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 18:39:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:16,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1870552540, now seen corresponding path program 543 times [2020-01-16 18:39:16,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:16,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555946880] [2020-01-16 18:39:16,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:17,112 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:39:17,239 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:17,244 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 18:39:17,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555946880] [2020-01-16 18:39:17,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:17,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:17,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737087356] [2020-01-16 18:39:17,245 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:17,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:17,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:17,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:17,245 INFO L87 Difference]: Start difference. First operand 1571 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:39:17,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:17,439 INFO L93 Difference]: Finished difference Result 2945 states and 11701 transitions. [2020-01-16 18:39:17,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:17,439 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:17,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:17,447 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:39:17,447 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:39:17,447 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 18:39:17,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:39:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 18:39:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:39:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7043 transitions. [2020-01-16 18:39:17,513 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7043 transitions. Word has length 28 [2020-01-16 18:39:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:17,514 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7043 transitions. [2020-01-16 18:39:17,514 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:17,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7043 transitions. [2020-01-16 18:39:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:17,516 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:17,516 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:17,516 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 18:39:17,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:17,516 INFO L82 PathProgramCache]: Analyzing trace with hash -207899852, now seen corresponding path program 544 times [2020-01-16 18:39:17,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:17,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182265732] [2020-01-16 18:39:17,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:18,102 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:39:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:18,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182265732] [2020-01-16 18:39:18,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:18,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:18,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504066947] [2020-01-16 18:39:18,109 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:18,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:18,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:18,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:18,110 INFO L87 Difference]: Start difference. First operand 1576 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:39:18,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:18,322 INFO L93 Difference]: Finished difference Result 2947 states and 11700 transitions. [2020-01-16 18:39:18,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:18,323 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:18,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:18,330 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:39:18,330 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:39:18,331 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 18:39:18,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:39:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1571. [2020-01-16 18:39:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:39:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7030 transitions. [2020-01-16 18:39:18,397 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7030 transitions. Word has length 28 [2020-01-16 18:39:18,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:18,397 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7030 transitions. [2020-01-16 18:39:18,397 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:18,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7030 transitions. [2020-01-16 18:39:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:18,399 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:18,399 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 18:39:18,400 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 18:39:18,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:18,400 INFO L82 PathProgramCache]: Analyzing trace with hash -621593692, now seen corresponding path program 545 times [2020-01-16 18:39:18,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:18,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571992536] [2020-01-16 18:39:18,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:18,990 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:18,997 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 18:39:18,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571992536] [2020-01-16 18:39:18,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:18,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:18,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963746753] [2020-01-16 18:39:18,998 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:18,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:18,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:18,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:18,998 INFO L87 Difference]: Start difference. First operand 1571 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:39:19,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:19,226 INFO L93 Difference]: Finished difference Result 2942 states and 11690 transitions. [2020-01-16 18:39:19,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:19,227 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:19,234 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 18:39:19,234 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:39:19,234 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 18:39:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:39:19,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1575. [2020-01-16 18:39:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:39:19,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7037 transitions. [2020-01-16 18:39:19,299 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7037 transitions. Word has length 28 [2020-01-16 18:39:19,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:19,300 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7037 transitions. [2020-01-16 18:39:19,300 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:19,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7037 transitions. [2020-01-16 18:39:19,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:19,302 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:19,302 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 18:39:19,302 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 18:39:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:19,302 INFO L82 PathProgramCache]: Analyzing trace with hash 867811304, now seen corresponding path program 546 times [2020-01-16 18:39:19,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:19,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23519758] [2020-01-16 18:39:19,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:19,891 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:19,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23519758] [2020-01-16 18:39:19,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:19,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:19,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81350203] [2020-01-16 18:39:19,899 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:19,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:19,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:19,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:19,899 INFO L87 Difference]: Start difference. First operand 1575 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:39:20,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:20,128 INFO L93 Difference]: Finished difference Result 2945 states and 11692 transitions. [2020-01-16 18:39:20,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:20,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:20,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:20,135 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:39:20,135 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:39:20,135 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 18:39:20,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:39:20,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1567. [2020-01-16 18:39:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:39:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7019 transitions. [2020-01-16 18:39:20,202 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7019 transitions. Word has length 28 [2020-01-16 18:39:20,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:20,202 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7019 transitions. [2020-01-16 18:39:20,202 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7019 transitions. [2020-01-16 18:39:20,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:20,204 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:20,204 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 18:39:20,204 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 18:39:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:20,205 INFO L82 PathProgramCache]: Analyzing trace with hash 712944044, now seen corresponding path program 547 times [2020-01-16 18:39:20,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:20,205 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726844149] [2020-01-16 18:39:20,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:20,657 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:39:20,785 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:20,792 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 18:39:20,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726844149] [2020-01-16 18:39:20,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:20,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:20,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642355705] [2020-01-16 18:39:20,793 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:20,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:20,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:20,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:20,793 INFO L87 Difference]: Start difference. First operand 1567 states and 7019 transitions. Second operand 11 states. [2020-01-16 18:39:20,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:20,980 INFO L93 Difference]: Finished difference Result 2962 states and 11734 transitions. [2020-01-16 18:39:20,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:20,980 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:20,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:20,987 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:39:20,988 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:39:20,988 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 18:39:21,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:39:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1577. [2020-01-16 18:39:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:39:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7045 transitions. [2020-01-16 18:39:21,054 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7045 transitions. Word has length 28 [2020-01-16 18:39:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:21,054 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7045 transitions. [2020-01-16 18:39:21,054 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:21,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7045 transitions. [2020-01-16 18:39:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:21,056 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:21,056 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 18:39:21,056 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 18:39:21,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:21,057 INFO L82 PathProgramCache]: Analyzing trace with hash -603213260, now seen corresponding path program 548 times [2020-01-16 18:39:21,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:21,057 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293023153] [2020-01-16 18:39:21,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:21,636 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:21,643 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 18:39:21,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293023153] [2020-01-16 18:39:21,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:21,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:21,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074143220] [2020-01-16 18:39:21,643 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:21,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:21,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:21,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:21,644 INFO L87 Difference]: Start difference. First operand 1577 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:39:21,883 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-01-16 18:39:21,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:21,899 INFO L93 Difference]: Finished difference Result 2956 states and 11718 transitions. [2020-01-16 18:39:21,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:21,900 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:21,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:21,907 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:39:21,908 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:39:21,908 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 18:39:21,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:39:21,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1572. [2020-01-16 18:39:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:39:21,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7032 transitions. [2020-01-16 18:39:21,973 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7032 transitions. Word has length 28 [2020-01-16 18:39:21,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:21,973 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7032 transitions. [2020-01-16 18:39:21,973 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7032 transitions. [2020-01-16 18:39:21,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:21,975 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:21,975 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 18:39:21,975 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 18:39:21,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:21,975 INFO L82 PathProgramCache]: Analyzing trace with hash -360141336, now seen corresponding path program 549 times [2020-01-16 18:39:21,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:21,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042601008] [2020-01-16 18:39:21,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:22,447 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:39:22,573 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:22,580 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 18:39:22,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042601008] [2020-01-16 18:39:22,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:22,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:22,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336933620] [2020-01-16 18:39:22,581 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:22,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:22,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:22,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:22,581 INFO L87 Difference]: Start difference. First operand 1572 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:39:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:22,768 INFO L93 Difference]: Finished difference Result 2968 states and 11744 transitions. [2020-01-16 18:39:22,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:22,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:22,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:22,776 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:39:22,776 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:39:22,776 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:39:22,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:39:22,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1580. [2020-01-16 18:39:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:39:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7046 transitions. [2020-01-16 18:39:22,842 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7046 transitions. Word has length 28 [2020-01-16 18:39:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:22,842 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7046 transitions. [2020-01-16 18:39:22,842 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7046 transitions. [2020-01-16 18:39:22,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:22,844 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:22,844 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 18:39:22,844 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 18:39:22,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:22,844 INFO L82 PathProgramCache]: Analyzing trace with hash -186893644, now seen corresponding path program 550 times [2020-01-16 18:39:22,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:22,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510143810] [2020-01-16 18:39:22,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:23,430 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:23,437 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 18:39:23,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510143810] [2020-01-16 18:39:23,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:23,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:23,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447632075] [2020-01-16 18:39:23,438 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:23,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:23,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:23,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:23,438 INFO L87 Difference]: Start difference. First operand 1580 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:39:23,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:23,719 INFO L93 Difference]: Finished difference Result 2965 states and 11731 transitions. [2020-01-16 18:39:23,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:23,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:23,727 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:39:23,728 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:39:23,728 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 18:39:23,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:39:23,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1572. [2020-01-16 18:39:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:39:23,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7027 transitions. [2020-01-16 18:39:23,795 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7027 transitions. Word has length 28 [2020-01-16 18:39:23,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:23,795 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7027 transitions. [2020-01-16 18:39:23,795 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:23,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7027 transitions. [2020-01-16 18:39:23,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:23,797 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:23,797 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 18:39:23,797 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 18:39:23,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:23,797 INFO L82 PathProgramCache]: Analyzing trace with hash 472497896, now seen corresponding path program 551 times [2020-01-16 18:39:23,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:23,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635653397] [2020-01-16 18:39:23,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:24,381 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:24,388 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 18:39:24,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635653397] [2020-01-16 18:39:24,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:24,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:24,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925267285] [2020-01-16 18:39:24,388 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:24,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:24,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:24,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:24,389 INFO L87 Difference]: Start difference. First operand 1572 states and 7027 transitions. Second operand 11 states. [2020-01-16 18:39:24,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:24,602 INFO L93 Difference]: Finished difference Result 2952 states and 11706 transitions. [2020-01-16 18:39:24,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:24,603 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:24,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:24,610 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:39:24,610 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:39:24,610 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 18:39:24,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:39:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1576. [2020-01-16 18:39:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:39:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7034 transitions. [2020-01-16 18:39:24,676 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7034 transitions. Word has length 28 [2020-01-16 18:39:24,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:24,676 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7034 transitions. [2020-01-16 18:39:24,676 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7034 transitions. [2020-01-16 18:39:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:24,678 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:24,679 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:24,679 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 18:39:24,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:24,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1961902892, now seen corresponding path program 552 times [2020-01-16 18:39:24,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:24,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19742728] [2020-01-16 18:39:24,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:25,145 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:39:25,275 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:25,280 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 18:39:25,281 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19742728] [2020-01-16 18:39:25,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:25,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:25,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148701354] [2020-01-16 18:39:25,281 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:25,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:25,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:25,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:25,282 INFO L87 Difference]: Start difference. First operand 1576 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:39:25,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:25,572 INFO L93 Difference]: Finished difference Result 2955 states and 11708 transitions. [2020-01-16 18:39:25,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:25,572 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:25,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:25,580 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:39:25,580 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:39:25,580 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 18:39:25,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:39:25,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1562. [2020-01-16 18:39:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 18:39:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7005 transitions. [2020-01-16 18:39:25,645 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7005 transitions. Word has length 28 [2020-01-16 18:39:25,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:25,645 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7005 transitions. [2020-01-16 18:39:25,645 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7005 transitions. [2020-01-16 18:39:25,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:25,648 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:25,648 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 18:39:25,648 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 18:39:25,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:25,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2966018, now seen corresponding path program 553 times [2020-01-16 18:39:25,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:25,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830418434] [2020-01-16 18:39:25,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:26,117 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:39:26,241 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:26,248 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 18:39:26,248 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830418434] [2020-01-16 18:39:26,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:26,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:26,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657117114] [2020-01-16 18:39:26,249 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:26,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:26,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:26,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:26,249 INFO L87 Difference]: Start difference. First operand 1562 states and 7005 transitions. Second operand 11 states. [2020-01-16 18:39:26,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:26,487 INFO L93 Difference]: Finished difference Result 2938 states and 11692 transitions. [2020-01-16 18:39:26,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:26,488 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:26,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:26,494 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 18:39:26,495 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 18:39:26,495 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 18:39:26,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 18:39:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1575. [2020-01-16 18:39:26,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:39:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7048 transitions. [2020-01-16 18:39:26,560 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7048 transitions. Word has length 28 [2020-01-16 18:39:26,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:26,560 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7048 transitions. [2020-01-16 18:39:26,560 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:26,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7048 transitions. [2020-01-16 18:39:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:26,562 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:26,563 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:26,563 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 18:39:26,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:26,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2057893784, now seen corresponding path program 554 times [2020-01-16 18:39:26,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:26,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822404236] [2020-01-16 18:39:26,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:27,151 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:27,158 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 18:39:27,159 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822404236] [2020-01-16 18:39:27,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:27,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:27,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134014906] [2020-01-16 18:39:27,159 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:27,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:27,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:27,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:27,160 INFO L87 Difference]: Start difference. First operand 1575 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:39:27,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:27,446 INFO L93 Difference]: Finished difference Result 2941 states and 11693 transitions. [2020-01-16 18:39:27,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:27,446 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:27,454 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:39:27,454 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 18:39:27,454 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:39:27,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 18:39:27,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1570. [2020-01-16 18:39:27,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:39:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7035 transitions. [2020-01-16 18:39:27,520 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7035 transitions. Word has length 28 [2020-01-16 18:39:27,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:27,520 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7035 transitions. [2020-01-16 18:39:27,520 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:27,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7035 transitions. [2020-01-16 18:39:27,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:27,522 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:27,522 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:27,522 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 18:39:27,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:27,523 INFO L82 PathProgramCache]: Analyzing trace with hash 540821596, now seen corresponding path program 555 times [2020-01-16 18:39:27,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:27,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614160781] [2020-01-16 18:39:27,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:27,990 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:39:28,121 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:28,127 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 18:39:28,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614160781] [2020-01-16 18:39:28,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:28,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:28,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762996885] [2020-01-16 18:39:28,127 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:28,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:28,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:28,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:28,128 INFO L87 Difference]: Start difference. First operand 1570 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:39:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:28,431 INFO L93 Difference]: Finished difference Result 2933 states and 11677 transitions. [2020-01-16 18:39:28,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:28,432 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:28,439 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:39:28,440 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 18:39:28,440 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 18:39:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 18:39:28,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1574. [2020-01-16 18:39:28,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:39:28,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7042 transitions. [2020-01-16 18:39:28,505 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7042 transitions. Word has length 28 [2020-01-16 18:39:28,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:28,506 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7042 transitions. [2020-01-16 18:39:28,506 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:28,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7042 transitions. [2020-01-16 18:39:28,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:28,508 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:28,508 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 18:39:28,508 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 18:39:28,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:28,508 INFO L82 PathProgramCache]: Analyzing trace with hash 714069288, now seen corresponding path program 556 times [2020-01-16 18:39:28,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:28,508 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073447509] [2020-01-16 18:39:28,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:29,095 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:39:29,102 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 18:39:29,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073447509] [2020-01-16 18:39:29,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:29,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:29,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377422926] [2020-01-16 18:39:29,102 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:29,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:29,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:29,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:29,103 INFO L87 Difference]: Start difference. First operand 1574 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:39:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:29,364 INFO L93 Difference]: Finished difference Result 2932 states and 11671 transitions. [2020-01-16 18:39:29,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:29,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:29,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:29,372 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 18:39:29,372 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 18:39:29,373 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 18:39:29,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 18:39:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1570. [2020-01-16 18:39:29,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:39:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7031 transitions. [2020-01-16 18:39:29,438 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7031 transitions. Word has length 28 [2020-01-16 18:39:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:29,438 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7031 transitions. [2020-01-16 18:39:29,438 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:29,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7031 transitions. [2020-01-16 18:39:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:29,440 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:29,440 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 18:39:29,440 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 18:39:29,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:29,441 INFO L82 PathProgramCache]: Analyzing trace with hash -982182628, now seen corresponding path program 557 times [2020-01-16 18:39:29,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:29,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001992218] [2020-01-16 18:39:29,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:29,887 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:39:30,015 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:39:30,022 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 18:39:30,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001992218] [2020-01-16 18:39:30,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:30,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:30,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003011113] [2020-01-16 18:39:30,023 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:30,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:30,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:30,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:30,023 INFO L87 Difference]: Start difference. First operand 1570 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:39:30,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:30,310 INFO L93 Difference]: Finished difference Result 2939 states and 11685 transitions. [2020-01-16 18:39:30,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:30,311 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:30,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:30,318 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 18:39:30,318 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:39:30,319 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:39:30,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:39:30,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1574. [2020-01-16 18:39:30,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:39:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7038 transitions. [2020-01-16 18:39:30,384 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7038 transitions. Word has length 28 [2020-01-16 18:39:30,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:30,384 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7038 transitions. [2020-01-16 18:39:30,384 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7038 transitions. [2020-01-16 18:39:30,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:30,386 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:30,386 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 18:39:30,387 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 18:39:30,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:30,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1251924866, now seen corresponding path program 558 times [2020-01-16 18:39:30,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:30,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057618632] [2020-01-16 18:39:30,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:30,843 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:39:30,969 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:39:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:30,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057618632] [2020-01-16 18:39:30,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:30,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:30,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815936882] [2020-01-16 18:39:30,976 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:30,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:30,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:30,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:30,976 INFO L87 Difference]: Start difference. First operand 1574 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:39:31,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:31,266 INFO L93 Difference]: Finished difference Result 2935 states and 11673 transitions. [2020-01-16 18:39:31,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:31,267 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:31,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:31,274 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 18:39:31,274 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 18:39:31,274 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 18:39:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 18:39:31,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1566. [2020-01-16 18:39:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:39:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7020 transitions. [2020-01-16 18:39:31,339 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7020 transitions. Word has length 28 [2020-01-16 18:39:31,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:31,339 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7020 transitions. [2020-01-16 18:39:31,339 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:31,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7020 transitions. [2020-01-16 18:39:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:31,341 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:31,341 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 18:39:31,342 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 18:39:31,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:31,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1097057606, now seen corresponding path program 559 times [2020-01-16 18:39:31,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:31,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562390626] [2020-01-16 18:39:31,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:31,794 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:39:31,922 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:31,929 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562390626] [2020-01-16 18:39:31,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:31,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:31,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697118328] [2020-01-16 18:39:31,929 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:31,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:31,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:31,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:31,930 INFO L87 Difference]: Start difference. First operand 1566 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:39:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:32,210 INFO L93 Difference]: Finished difference Result 2946 states and 11710 transitions. [2020-01-16 18:39:32,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:32,210 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:32,217 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:39:32,218 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 18:39:32,218 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 18:39:32,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 18:39:32,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1576. [2020-01-16 18:39:32,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:39:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7048 transitions. [2020-01-16 18:39:32,283 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7048 transitions. Word has length 28 [2020-01-16 18:39:32,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:32,283 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7048 transitions. [2020-01-16 18:39:32,283 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7048 transitions. [2020-01-16 18:39:32,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:32,285 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:32,285 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:32,285 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 18:39:32,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:32,286 INFO L82 PathProgramCache]: Analyzing trace with hash -963802196, now seen corresponding path program 560 times [2020-01-16 18:39:32,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:32,286 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913138688] [2020-01-16 18:39:32,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:32,746 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:39:32,874 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:32,880 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 18:39:32,881 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913138688] [2020-01-16 18:39:32,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:32,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:32,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400925197] [2020-01-16 18:39:32,881 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:32,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:32,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:32,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:32,882 INFO L87 Difference]: Start difference. First operand 1576 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:39:33,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:33,164 INFO L93 Difference]: Finished difference Result 2949 states and 11711 transitions. [2020-01-16 18:39:33,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:33,164 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:33,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:33,171 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 18:39:33,171 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:39:33,171 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 18:39:33,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:39:33,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1571. [2020-01-16 18:39:33,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:39:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7034 transitions. [2020-01-16 18:39:33,236 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7034 transitions. Word has length 28 [2020-01-16 18:39:33,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:33,237 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7034 transitions. [2020-01-16 18:39:33,237 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:33,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7034 transitions. [2020-01-16 18:39:33,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:33,239 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:33,239 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 18:39:33,239 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 18:39:33,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:33,239 INFO L82 PathProgramCache]: Analyzing trace with hash 561827804, now seen corresponding path program 561 times [2020-01-16 18:39:33,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:33,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7217604] [2020-01-16 18:39:33,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:33,820 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:39:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:33,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7217604] [2020-01-16 18:39:33,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:33,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:33,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954014088] [2020-01-16 18:39:33,828 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:33,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:33,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:33,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:33,828 INFO L87 Difference]: Start difference. First operand 1571 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:39:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:34,017 INFO L93 Difference]: Finished difference Result 2945 states and 11703 transitions. [2020-01-16 18:39:34,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:34,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:34,025 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:39:34,025 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:39:34,025 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 18:39:34,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:39:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 18:39:34,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:39:34,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7043 transitions. [2020-01-16 18:39:34,090 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7043 transitions. Word has length 28 [2020-01-16 18:39:34,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:34,090 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7043 transitions. [2020-01-16 18:39:34,091 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:34,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7043 transitions. [2020-01-16 18:39:34,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:34,093 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:34,093 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 18:39:34,093 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 18:39:34,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:34,093 INFO L82 PathProgramCache]: Analyzing trace with hash -2070486804, now seen corresponding path program 562 times [2020-01-16 18:39:34,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:34,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806320517] [2020-01-16 18:39:34,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:34,569 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:39:34,698 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:39:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:34,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806320517] [2020-01-16 18:39:34,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:34,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:34,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054341998] [2020-01-16 18:39:34,706 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:34,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:34,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:34,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:34,706 INFO L87 Difference]: Start difference. First operand 1576 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:39:34,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:34,906 INFO L93 Difference]: Finished difference Result 2947 states and 11702 transitions. [2020-01-16 18:39:34,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:34,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:34,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:34,914 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:39:34,915 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:39:34,915 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 18:39:34,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:39:34,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1571. [2020-01-16 18:39:34,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:39:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7029 transitions. [2020-01-16 18:39:34,980 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7029 transitions. Word has length 28 [2020-01-16 18:39:34,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:34,980 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7029 transitions. [2020-01-16 18:39:34,980 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:34,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7029 transitions. [2020-01-16 18:39:34,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:34,982 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:34,983 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:34,983 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 18:39:34,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:34,983 INFO L82 PathProgramCache]: Analyzing trace with hash -961176420, now seen corresponding path program 563 times [2020-01-16 18:39:34,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:34,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163118345] [2020-01-16 18:39:34,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:35,572 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:35,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163118345] [2020-01-16 18:39:35,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:35,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:35,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870890574] [2020-01-16 18:39:35,580 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:35,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:35,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:35,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:35,580 INFO L87 Difference]: Start difference. First operand 1571 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:39:35,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:35,771 INFO L93 Difference]: Finished difference Result 2953 states and 11716 transitions. [2020-01-16 18:39:35,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:35,771 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:35,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:35,779 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:39:35,779 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:39:35,779 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 18:39:35,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:39:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1578. [2020-01-16 18:39:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:39:35,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7042 transitions. [2020-01-16 18:39:35,844 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7042 transitions. Word has length 28 [2020-01-16 18:39:35,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:35,844 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7042 transitions. [2020-01-16 18:39:35,845 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:35,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7042 transitions. [2020-01-16 18:39:35,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:35,847 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:35,847 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 18:39:35,847 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 18:39:35,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:35,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1532631226, now seen corresponding path program 564 times [2020-01-16 18:39:35,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:35,847 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253646662] [2020-01-16 18:39:35,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:36,428 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:39:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:36,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253646662] [2020-01-16 18:39:36,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:36,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:36,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584375850] [2020-01-16 18:39:36,436 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:36,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:36,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:36,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:36,436 INFO L87 Difference]: Start difference. First operand 1578 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:39:36,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:36,640 INFO L93 Difference]: Finished difference Result 2952 states and 11707 transitions. [2020-01-16 18:39:36,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:36,641 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:36,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:36,648 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:39:36,649 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 18:39:36,649 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 18:39:36,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 18:39:36,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1566. [2020-01-16 18:39:36,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:39:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7016 transitions. [2020-01-16 18:39:36,714 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7016 transitions. Word has length 28 [2020-01-16 18:39:36,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:36,714 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7016 transitions. [2020-01-16 18:39:36,714 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7016 transitions. [2020-01-16 18:39:36,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:36,716 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:36,716 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:36,716 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 18:39:36,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:36,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1128566918, now seen corresponding path program 565 times [2020-01-16 18:39:36,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:36,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693211344] [2020-01-16 18:39:36,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:37,176 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:39:37,306 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:39:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:37,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693211344] [2020-01-16 18:39:37,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:37,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:37,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858352735] [2020-01-16 18:39:37,314 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:37,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:37,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:37,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:37,314 INFO L87 Difference]: Start difference. First operand 1566 states and 7016 transitions. Second operand 11 states. [2020-01-16 18:39:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:37,504 INFO L93 Difference]: Finished difference Result 2932 states and 11671 transitions. [2020-01-16 18:39:37,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:37,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:37,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:37,512 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 18:39:37,512 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 18:39:37,512 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:39:37,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 18:39:37,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1574. [2020-01-16 18:39:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:39:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7038 transitions. [2020-01-16 18:39:37,578 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7038 transitions. Word has length 28 [2020-01-16 18:39:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:37,578 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7038 transitions. [2020-01-16 18:39:37,578 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7038 transitions. [2020-01-16 18:39:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:37,581 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:37,581 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 18:39:37,581 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 18:39:37,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:37,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1301814610, now seen corresponding path program 566 times [2020-01-16 18:39:37,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:37,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532925249] [2020-01-16 18:39:37,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:38,168 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:38,176 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 18:39:38,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532925249] [2020-01-16 18:39:38,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:38,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:38,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929737063] [2020-01-16 18:39:38,177 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:38,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:38,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:38,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:38,177 INFO L87 Difference]: Start difference. First operand 1574 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:39:38,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:38,380 INFO L93 Difference]: Finished difference Result 2931 states and 11665 transitions. [2020-01-16 18:39:38,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:38,380 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:38,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:38,387 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 18:39:38,387 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 18:39:38,387 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 18:39:38,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 18:39:38,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1570. [2020-01-16 18:39:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:39:38,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7027 transitions. [2020-01-16 18:39:38,452 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7027 transitions. Word has length 28 [2020-01-16 18:39:38,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:38,453 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7027 transitions. [2020-01-16 18:39:38,453 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:38,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7027 transitions. [2020-01-16 18:39:38,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:38,455 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:38,455 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 18:39:38,455 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 18:39:38,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:38,455 INFO L82 PathProgramCache]: Analyzing trace with hash 55481538, now seen corresponding path program 567 times [2020-01-16 18:39:38,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:38,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047766794] [2020-01-16 18:39:38,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:38,913 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:39:39,040 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:39:39,047 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 18:39:39,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047766794] [2020-01-16 18:39:39,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:39,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:39,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114488553] [2020-01-16 18:39:39,048 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:39,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:39,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:39,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:39,048 INFO L87 Difference]: Start difference. First operand 1570 states and 7027 transitions. Second operand 11 states. [2020-01-16 18:39:39,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:39,230 INFO L93 Difference]: Finished difference Result 2936 states and 11676 transitions. [2020-01-16 18:39:39,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:39,231 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:39,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:39,238 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 18:39:39,239 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:39:39,239 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:39:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:39:39,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1575. [2020-01-16 18:39:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:39:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7036 transitions. [2020-01-16 18:39:39,305 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7036 transitions. Word has length 28 [2020-01-16 18:39:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:39,305 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7036 transitions. [2020-01-16 18:39:39,305 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7036 transitions. [2020-01-16 18:39:39,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:39,307 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:39,307 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 18:39:39,307 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 18:39:39,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:39,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1718134226, now seen corresponding path program 568 times [2020-01-16 18:39:39,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:39,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52659519] [2020-01-16 18:39:39,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:39,892 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:39:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:39,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52659519] [2020-01-16 18:39:39,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:39,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:39,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484297609] [2020-01-16 18:39:39,899 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:39,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:39,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:39,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:39,900 INFO L87 Difference]: Start difference. First operand 1575 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:39:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:40,088 INFO L93 Difference]: Finished difference Result 2938 states and 11675 transitions. [2020-01-16 18:39:40,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:40,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:40,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:40,096 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 18:39:40,096 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:39:40,097 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 18:39:40,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:39:40,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1570. [2020-01-16 18:39:40,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:39:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7023 transitions. [2020-01-16 18:39:40,162 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7023 transitions. Word has length 28 [2020-01-16 18:39:40,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:40,162 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7023 transitions. [2020-01-16 18:39:40,162 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:40,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7023 transitions. [2020-01-16 18:39:40,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:40,164 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:40,164 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 18:39:40,164 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 18:39:40,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:40,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1304440386, now seen corresponding path program 569 times [2020-01-16 18:39:40,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:40,165 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282253913] [2020-01-16 18:39:40,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:40,749 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:40,780 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 18:39:40,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282253913] [2020-01-16 18:39:40,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:40,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:40,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073846601] [2020-01-16 18:39:40,780 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:40,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:40,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:40,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:40,781 INFO L87 Difference]: Start difference. First operand 1570 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:39:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:40,974 INFO L93 Difference]: Finished difference Result 2933 states and 11665 transitions. [2020-01-16 18:39:40,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:40,974 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:40,981 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:39:40,981 INFO L226 Difference]: Without dead ends: 2919 [2020-01-16 18:39:40,981 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 18:39:41,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-01-16 18:39:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1574. [2020-01-16 18:39:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:39:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7030 transitions. [2020-01-16 18:39:41,047 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7030 transitions. Word has length 28 [2020-01-16 18:39:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:41,047 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7030 transitions. [2020-01-16 18:39:41,047 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7030 transitions. [2020-01-16 18:39:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:41,050 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:41,050 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 18:39:41,050 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 18:39:41,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:41,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1501121914, now seen corresponding path program 570 times [2020-01-16 18:39:41,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:41,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517749521] [2020-01-16 18:39:41,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:41,639 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:41,646 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517749521] [2020-01-16 18:39:41,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:41,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:41,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738505923] [2020-01-16 18:39:41,647 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:41,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:41,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:41,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:41,647 INFO L87 Difference]: Start difference. First operand 1574 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:39:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:41,856 INFO L93 Difference]: Finished difference Result 2936 states and 11667 transitions. [2020-01-16 18:39:41,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:41,856 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:41,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:41,863 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 18:39:41,863 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:39:41,864 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 18:39:41,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:39:41,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1566. [2020-01-16 18:39:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:39:41,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7012 transitions. [2020-01-16 18:39:41,929 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7012 transitions. Word has length 28 [2020-01-16 18:39:41,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:41,929 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7012 transitions. [2020-01-16 18:39:41,929 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:41,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7012 transitions. [2020-01-16 18:39:41,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:41,931 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:41,931 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 18:39:41,931 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 18:39:41,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:41,931 INFO L82 PathProgramCache]: Analyzing trace with hash -900783572, now seen corresponding path program 571 times [2020-01-16 18:39:41,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:41,931 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733588991] [2020-01-16 18:39:41,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:42,511 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:39:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:42,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733588991] [2020-01-16 18:39:42,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:42,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:42,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632811526] [2020-01-16 18:39:42,518 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:42,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:42,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:42,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:42,518 INFO L87 Difference]: Start difference. First operand 1566 states and 7012 transitions. Second operand 11 states. [2020-01-16 18:39:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:42,716 INFO L93 Difference]: Finished difference Result 2943 states and 11691 transitions. [2020-01-16 18:39:42,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:42,717 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:42,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:42,724 INFO L225 Difference]: With dead ends: 2943 [2020-01-16 18:39:42,724 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:39:42,725 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 18:39:42,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:39:42,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1574. [2020-01-16 18:39:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:39:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7034 transitions. [2020-01-16 18:39:42,790 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7034 transitions. Word has length 28 [2020-01-16 18:39:42,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:42,790 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7034 transitions. [2020-01-16 18:39:42,790 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:42,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7034 transitions. [2020-01-16 18:39:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:42,792 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:42,792 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 18:39:42,792 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 18:39:42,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:42,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1333323922, now seen corresponding path program 572 times [2020-01-16 18:39:42,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:42,793 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331600263] [2020-01-16 18:39:42,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:43,252 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:39:43,379 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:39:43,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:43,386 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331600263] [2020-01-16 18:39:43,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:43,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:43,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207969097] [2020-01-16 18:39:43,386 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:43,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:43,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:43,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:43,387 INFO L87 Difference]: Start difference. First operand 1574 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:39:43,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:43,577 INFO L93 Difference]: Finished difference Result 2939 states and 11679 transitions. [2020-01-16 18:39:43,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:43,578 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:43,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:43,585 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 18:39:43,585 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:39:43,586 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:39:43,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:39:43,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1570. [2020-01-16 18:39:43,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:39:43,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7023 transitions. [2020-01-16 18:39:43,651 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7023 transitions. Word has length 28 [2020-01-16 18:39:43,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:43,651 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7023 transitions. [2020-01-16 18:39:43,651 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:43,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7023 transitions. [2020-01-16 18:39:43,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:43,653 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:43,653 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 18:39:43,654 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 18:39:43,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:43,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1973868952, now seen corresponding path program 573 times [2020-01-16 18:39:43,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:43,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238040043] [2020-01-16 18:39:43,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:44,244 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:39:44,251 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 18:39:44,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238040043] [2020-01-16 18:39:44,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:44,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:44,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010192250] [2020-01-16 18:39:44,252 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:44,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:44,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:44,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:44,252 INFO L87 Difference]: Start difference. First operand 1570 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:39:44,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:44,445 INFO L93 Difference]: Finished difference Result 2949 states and 11702 transitions. [2020-01-16 18:39:44,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:44,445 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:44,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:44,453 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 18:39:44,453 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 18:39:44,453 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 18:39:44,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 18:39:44,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1577. [2020-01-16 18:39:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:39:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7036 transitions. [2020-01-16 18:39:44,519 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7036 transitions. Word has length 28 [2020-01-16 18:39:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:44,519 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7036 transitions. [2020-01-16 18:39:44,519 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7036 transitions. [2020-01-16 18:39:44,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:44,521 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:44,521 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 18:39:44,521 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 18:39:44,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:44,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1749643538, now seen corresponding path program 574 times [2020-01-16 18:39:44,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:44,522 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200759795] [2020-01-16 18:39:44,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:44,994 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:39:45,123 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:45,130 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 18:39:45,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200759795] [2020-01-16 18:39:45,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:45,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:45,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529066632] [2020-01-16 18:39:45,131 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:45,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:45,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:45,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:45,131 INFO L87 Difference]: Start difference. First operand 1577 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:39:45,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:45,325 INFO L93 Difference]: Finished difference Result 2948 states and 11693 transitions. [2020-01-16 18:39:45,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:45,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:45,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:45,332 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:39:45,333 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:39:45,333 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 18:39:45,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:39:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1570. [2020-01-16 18:39:45,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:39:45,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7019 transitions. [2020-01-16 18:39:45,398 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7019 transitions. Word has length 28 [2020-01-16 18:39:45,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:45,398 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7019 transitions. [2020-01-16 18:39:45,398 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7019 transitions. [2020-01-16 18:39:45,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:45,401 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:45,401 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 18:39:45,401 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 18:39:45,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:45,401 INFO L82 PathProgramCache]: Analyzing trace with hash 798094120, now seen corresponding path program 575 times [2020-01-16 18:39:45,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:45,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023703322] [2020-01-16 18:39:45,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:45,864 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:39:45,991 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:45,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023703322] [2020-01-16 18:39:45,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:45,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:45,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778018297] [2020-01-16 18:39:45,999 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:45,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:45,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:45,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:45,999 INFO L87 Difference]: Start difference. First operand 1570 states and 7019 transitions. Second operand 11 states. [2020-01-16 18:39:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:46,226 INFO L93 Difference]: Finished difference Result 2938 states and 11673 transitions. [2020-01-16 18:39:46,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:46,226 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:46,234 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 18:39:46,234 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:39:46,234 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 18:39:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:39:46,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1574. [2020-01-16 18:39:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:39:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7026 transitions. [2020-01-16 18:39:46,300 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7026 transitions. Word has length 28 [2020-01-16 18:39:46,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:46,300 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7026 transitions. [2020-01-16 18:39:46,300 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:46,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7026 transitions. [2020-01-16 18:39:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:46,302 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:46,302 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 18:39:46,302 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 18:39:46,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:46,302 INFO L82 PathProgramCache]: Analyzing trace with hash -2007468180, now seen corresponding path program 576 times [2020-01-16 18:39:46,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:46,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041642202] [2020-01-16 18:39:46,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:46,892 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:46,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041642202] [2020-01-16 18:39:46,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:46,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:46,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097331824] [2020-01-16 18:39:46,900 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:46,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:46,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:46,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:46,900 INFO L87 Difference]: Start difference. First operand 1574 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:39:47,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:47,147 INFO L93 Difference]: Finished difference Result 2941 states and 11675 transitions. [2020-01-16 18:39:47,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:47,147 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:47,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:47,155 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:39:47,155 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 18:39:47,155 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 18:39:47,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 18:39:47,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1562. [2020-01-16 18:39:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 18:39:47,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7001 transitions. [2020-01-16 18:39:47,220 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7001 transitions. Word has length 28 [2020-01-16 18:39:47,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:47,220 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7001 transitions. [2020-01-16 18:39:47,220 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:47,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7001 transitions. [2020-01-16 18:39:47,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:47,222 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:47,222 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:47,222 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 18:39:47,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:47,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1070478082, now seen corresponding path program 577 times [2020-01-16 18:39:47,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:47,223 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322716318] [2020-01-16 18:39:47,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:47,706 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-01-16 18:39:47,834 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:47,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322716318] [2020-01-16 18:39:47,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:47,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:47,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141627179] [2020-01-16 18:39:47,840 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:47,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:47,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:47,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:47,841 INFO L87 Difference]: Start difference. First operand 1562 states and 7001 transitions. Second operand 11 states. [2020-01-16 18:39:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:48,043 INFO L93 Difference]: Finished difference Result 2991 states and 11808 transitions. [2020-01-16 18:39:48,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:48,043 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:48,051 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:39:48,051 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 18:39:48,051 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:39:48,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 18:39:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1585. [2020-01-16 18:39:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:39:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7066 transitions. [2020-01-16 18:39:48,117 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7066 transitions. Word has length 28 [2020-01-16 18:39:48,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:48,117 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7066 transitions. [2020-01-16 18:39:48,117 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:48,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7066 transitions. [2020-01-16 18:39:48,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:48,119 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:48,119 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:48,119 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 18:39:48,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:48,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1815180580, now seen corresponding path program 578 times [2020-01-16 18:39:48,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:48,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572829239] [2020-01-16 18:39:48,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:48,589 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:39:48,719 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:39:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:48,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572829239] [2020-01-16 18:39:48,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:48,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:48,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247567150] [2020-01-16 18:39:48,727 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:48,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:48,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:48,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:48,727 INFO L87 Difference]: Start difference. First operand 1585 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:39:48,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:48,920 INFO L93 Difference]: Finished difference Result 2989 states and 11796 transitions. [2020-01-16 18:39:48,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:48,920 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:48,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:48,927 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 18:39:48,928 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:39:48,928 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 18:39:48,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:39:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 18:39:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:39:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7043 transitions. [2020-01-16 18:39:48,993 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7043 transitions. Word has length 28 [2020-01-16 18:39:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:48,994 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7043 transitions. [2020-01-16 18:39:48,994 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7043 transitions. [2020-01-16 18:39:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:48,996 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:48,996 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:48,996 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 18:39:48,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:48,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1608333660, now seen corresponding path program 579 times [2020-01-16 18:39:48,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:48,996 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782335021] [2020-01-16 18:39:48,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:49,458 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-01-16 18:39:49,587 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:49,593 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 18:39:49,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782335021] [2020-01-16 18:39:49,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:49,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:49,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508736089] [2020-01-16 18:39:49,594 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:49,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:49,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:49,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:49,595 INFO L87 Difference]: Start difference. First operand 1575 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:39:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:49,748 INFO L93 Difference]: Finished difference Result 2982 states and 11781 transitions. [2020-01-16 18:39:49,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:49,748 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:49,755 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:39:49,756 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:39:49,756 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 18:39:49,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:39:49,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1580. [2020-01-16 18:39:49,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:39:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7051 transitions. [2020-01-16 18:39:49,822 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7051 transitions. Word has length 28 [2020-01-16 18:39:49,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:49,822 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7051 transitions. [2020-01-16 18:39:49,822 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:49,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7051 transitions. [2020-01-16 18:39:49,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:49,824 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:49,824 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 18:39:49,824 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 18:39:49,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:49,824 INFO L82 PathProgramCache]: Analyzing trace with hash 292176356, now seen corresponding path program 580 times [2020-01-16 18:39:49,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:49,825 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931832630] [2020-01-16 18:39:49,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:50,415 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:50,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931832630] [2020-01-16 18:39:50,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:50,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:50,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047739452] [2020-01-16 18:39:50,423 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:50,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:50,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:50,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:50,423 INFO L87 Difference]: Start difference. First operand 1580 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:39:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:50,649 INFO L93 Difference]: Finished difference Result 2976 states and 11765 transitions. [2020-01-16 18:39:50,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:50,650 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:50,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:50,657 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:39:50,657 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:39:50,657 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 18:39:50,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:39:50,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1575. [2020-01-16 18:39:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:39:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7038 transitions. [2020-01-16 18:39:50,722 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7038 transitions. Word has length 28 [2020-01-16 18:39:50,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:50,723 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7038 transitions. [2020-01-16 18:39:50,723 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:50,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7038 transitions. [2020-01-16 18:39:50,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:50,725 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:50,725 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 18:39:50,725 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 18:39:50,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:50,725 INFO L82 PathProgramCache]: Analyzing trace with hash -330990180, now seen corresponding path program 581 times [2020-01-16 18:39:50,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:50,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825525292] [2020-01-16 18:39:50,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:51,318 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:39:51,325 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 18:39:51,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825525292] [2020-01-16 18:39:51,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:51,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:51,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089599906] [2020-01-16 18:39:51,326 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:51,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:51,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:51,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:51,326 INFO L87 Difference]: Start difference. First operand 1575 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:39:51,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:51,540 INFO L93 Difference]: Finished difference Result 2977 states and 11768 transitions. [2020-01-16 18:39:51,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:51,541 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:51,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:51,548 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:39:51,548 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:39:51,548 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 18:39:51,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:39:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1579. [2020-01-16 18:39:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:39:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7045 transitions. [2020-01-16 18:39:51,615 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7045 transitions. Word has length 28 [2020-01-16 18:39:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:51,615 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7045 transitions. [2020-01-16 18:39:51,615 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:51,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7045 transitions. [2020-01-16 18:39:51,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:51,617 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:51,617 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 18:39:51,618 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 18:39:51,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:51,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1903117314, now seen corresponding path program 582 times [2020-01-16 18:39:51,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:51,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141918231] [2020-01-16 18:39:51,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:52,074 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:39:52,205 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:39:52,212 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 18:39:52,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141918231] [2020-01-16 18:39:52,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:52,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:52,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186856252] [2020-01-16 18:39:52,213 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:52,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:52,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:52,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:52,213 INFO L87 Difference]: Start difference. First operand 1579 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:39:52,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:52,423 INFO L93 Difference]: Finished difference Result 2973 states and 11756 transitions. [2020-01-16 18:39:52,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:52,424 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:52,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:52,431 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:39:52,432 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 18:39:52,432 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 18:39:52,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 18:39:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1569. [2020-01-16 18:39:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:39:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7023 transitions. [2020-01-16 18:39:52,497 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7023 transitions. Word has length 28 [2020-01-16 18:39:52,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:52,497 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7023 transitions. [2020-01-16 18:39:52,497 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:52,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7023 transitions. [2020-01-16 18:39:52,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:52,499 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:52,500 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 18:39:52,500 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 18:39:52,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:52,500 INFO L82 PathProgramCache]: Analyzing trace with hash -2130397626, now seen corresponding path program 583 times [2020-01-16 18:39:52,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:52,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255766883] [2020-01-16 18:39:52,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:52,996 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-01-16 18:39:53,127 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:53,133 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 18:39:53,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255766883] [2020-01-16 18:39:53,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:53,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:53,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824400406] [2020-01-16 18:39:53,134 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:53,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:53,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:53,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:53,134 INFO L87 Difference]: Start difference. First operand 1569 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:39:53,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:53,284 INFO L93 Difference]: Finished difference Result 3004 states and 11839 transitions. [2020-01-16 18:39:53,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:53,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:53,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:53,292 INFO L225 Difference]: With dead ends: 3004 [2020-01-16 18:39:53,292 INFO L226 Difference]: Without dead ends: 2984 [2020-01-16 18:39:53,292 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 18:39:53,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-01-16 18:39:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1589. [2020-01-16 18:39:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 18:39:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7073 transitions. [2020-01-16 18:39:53,382 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7073 transitions. Word has length 28 [2020-01-16 18:39:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:53,382 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7073 transitions. [2020-01-16 18:39:53,382 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7073 transitions. [2020-01-16 18:39:53,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:53,384 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:53,384 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:53,384 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 18:39:53,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:53,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1385695128, now seen corresponding path program 584 times [2020-01-16 18:39:53,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:53,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640736998] [2020-01-16 18:39:53,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:53,870 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:39:54,001 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:39:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:39:54,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640736998] [2020-01-16 18:39:54,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:54,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:54,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950038097] [2020-01-16 18:39:54,009 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:54,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:54,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:54,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:54,009 INFO L87 Difference]: Start difference. First operand 1589 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:39:54,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:54,238 INFO L93 Difference]: Finished difference Result 3002 states and 11827 transitions. [2020-01-16 18:39:54,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:54,238 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:54,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:54,245 INFO L225 Difference]: With dead ends: 3002 [2020-01-16 18:39:54,245 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:39:54,245 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 18:39:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:39:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1579. [2020-01-16 18:39:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:39:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7047 transitions. [2020-01-16 18:39:54,310 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7047 transitions. Word has length 28 [2020-01-16 18:39:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:54,311 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7047 transitions. [2020-01-16 18:39:54,311 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7047 transitions. [2020-01-16 18:39:54,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:54,313 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:54,313 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 18:39:54,313 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 18:39:54,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:54,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1629339868, now seen corresponding path program 585 times [2020-01-16 18:39:54,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:54,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706550031] [2020-01-16 18:39:54,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:54,803 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:39:54,930 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:54,936 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 18:39:54,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706550031] [2020-01-16 18:39:54,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:54,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:54,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108403987] [2020-01-16 18:39:54,937 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:54,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:54,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:54,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:54,938 INFO L87 Difference]: Start difference. First operand 1579 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:39:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:55,087 INFO L93 Difference]: Finished difference Result 3001 states and 11824 transitions. [2020-01-16 18:39:55,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:55,088 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:55,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:55,095 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:39:55,095 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:39:55,095 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 18:39:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:39:55,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1587. [2020-01-16 18:39:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:39:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7061 transitions. [2020-01-16 18:39:55,161 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7061 transitions. Word has length 28 [2020-01-16 18:39:55,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:55,161 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7061 transitions. [2020-01-16 18:39:55,161 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:55,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7061 transitions. [2020-01-16 18:39:55,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:55,163 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:55,163 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 18:39:55,163 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 18:39:55,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:55,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1802587560, now seen corresponding path program 586 times [2020-01-16 18:39:55,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:55,164 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546943671] [2020-01-16 18:39:55,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:55,645 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:39:55,771 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:55,778 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 18:39:55,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546943671] [2020-01-16 18:39:55,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:55,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:55,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741993424] [2020-01-16 18:39:55,778 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:55,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:55,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:55,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:55,779 INFO L87 Difference]: Start difference. First operand 1587 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:39:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:55,974 INFO L93 Difference]: Finished difference Result 2998 states and 11811 transitions. [2020-01-16 18:39:55,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:55,974 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:55,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:55,982 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 18:39:55,982 INFO L226 Difference]: Without dead ends: 2973 [2020-01-16 18:39:55,982 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 18:39:56,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-01-16 18:39:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1579. [2020-01-16 18:39:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:39:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7039 transitions. [2020-01-16 18:39:56,047 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7039 transitions. Word has length 28 [2020-01-16 18:39:56,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:56,048 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7039 transitions. [2020-01-16 18:39:56,048 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:56,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7039 transitions. [2020-01-16 18:39:56,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:56,050 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:56,050 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 18:39:56,050 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 18:39:56,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:56,050 INFO L82 PathProgramCache]: Analyzing trace with hash -309983972, now seen corresponding path program 587 times [2020-01-16 18:39:56,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:56,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259489432] [2020-01-16 18:39:56,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:56,539 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:39:56,666 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:39:56,673 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 18:39:56,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259489432] [2020-01-16 18:39:56,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:56,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:56,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345956019] [2020-01-16 18:39:56,673 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:56,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:56,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:56,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:56,674 INFO L87 Difference]: Start difference. First operand 1579 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:39:56,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:56,920 INFO L93 Difference]: Finished difference Result 2996 states and 11808 transitions. [2020-01-16 18:39:56,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:56,920 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:56,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:56,927 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:39:56,928 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:39:56,928 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 18:39:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:39:56,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1586. [2020-01-16 18:39:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:39:56,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7052 transitions. [2020-01-16 18:39:56,994 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7052 transitions. Word has length 28 [2020-01-16 18:39:56,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:56,994 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7052 transitions. [2020-01-16 18:39:56,994 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:56,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7052 transitions. [2020-01-16 18:39:56,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:56,996 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:56,996 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:56,996 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 18:39:56,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:56,996 INFO L82 PathProgramCache]: Analyzing trace with hash -881438778, now seen corresponding path program 588 times [2020-01-16 18:39:56,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:56,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599973361] [2020-01-16 18:39:56,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:57,598 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:39:57,606 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 18:39:57,606 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599973361] [2020-01-16 18:39:57,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:57,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:57,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174725290] [2020-01-16 18:39:57,606 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:57,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:57,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:57,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:57,607 INFO L87 Difference]: Start difference. First operand 1586 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:39:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:57,806 INFO L93 Difference]: Finished difference Result 2995 states and 11799 transitions. [2020-01-16 18:39:57,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:57,806 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:57,814 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 18:39:57,814 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:39:57,814 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 18:39:57,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:39:57,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1569. [2020-01-16 18:39:57,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:39:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7016 transitions. [2020-01-16 18:39:57,879 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7016 transitions. Word has length 28 [2020-01-16 18:39:57,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:57,879 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7016 transitions. [2020-01-16 18:39:57,879 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:57,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7016 transitions. [2020-01-16 18:39:57,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:57,882 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:57,882 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 18:39:57,882 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 18:39:57,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:57,882 INFO L82 PathProgramCache]: Analyzing trace with hash -2098888314, now seen corresponding path program 589 times [2020-01-16 18:39:57,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:57,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303461085] [2020-01-16 18:39:57,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:58,348 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:39:58,476 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:58,483 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 18:39:58,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303461085] [2020-01-16 18:39:58,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:58,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:58,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808783472] [2020-01-16 18:39:58,484 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:58,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:58,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:58,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:58,484 INFO L87 Difference]: Start difference. First operand 1569 states and 7016 transitions. Second operand 11 states. [2020-01-16 18:39:58,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:58,635 INFO L93 Difference]: Finished difference Result 2978 states and 11766 transitions. [2020-01-16 18:39:58,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:58,636 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:58,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:58,643 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:39:58,643 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:39:58,644 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 18:39:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:39:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1579. [2020-01-16 18:39:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:39:58,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7042 transitions. [2020-01-16 18:39:58,710 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7042 transitions. Word has length 28 [2020-01-16 18:39:58,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:58,710 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7042 transitions. [2020-01-16 18:39:58,710 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:58,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7042 transitions. [2020-01-16 18:39:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:58,712 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:58,712 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:39:58,713 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 18:39:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:58,713 INFO L82 PathProgramCache]: Analyzing trace with hash 879921678, now seen corresponding path program 590 times [2020-01-16 18:39:58,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:58,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37927450] [2020-01-16 18:39:58,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:39:59,301 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:39:59,307 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 18:39:59,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37927450] [2020-01-16 18:39:59,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:39:59,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:39:59,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811239344] [2020-01-16 18:39:59,308 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:39:59,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:39:59,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:39:59,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:39:59,308 INFO L87 Difference]: Start difference. First operand 1579 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:39:59,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:39:59,507 INFO L93 Difference]: Finished difference Result 2972 states and 11750 transitions. [2020-01-16 18:39:59,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:39:59,508 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:39:59,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:39:59,515 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:39:59,515 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:39:59,516 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 18:39:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:39:59,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1574. [2020-01-16 18:39:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:39:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7029 transitions. [2020-01-16 18:39:59,624 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7029 transitions. Word has length 28 [2020-01-16 18:39:59,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:39:59,624 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7029 transitions. [2020-01-16 18:39:59,624 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:39:59,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7029 transitions. [2020-01-16 18:39:59,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:39:59,626 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:39:59,627 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 18:39:59,627 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 18:39:59,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:39:59,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1122993602, now seen corresponding path program 591 times [2020-01-16 18:39:59,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:39:59,627 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645324539] [2020-01-16 18:39:59,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:39:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:00,105 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:40:00,232 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:00,239 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 18:40:00,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645324539] [2020-01-16 18:40:00,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:00,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:00,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870454903] [2020-01-16 18:40:00,239 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:00,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:00,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:00,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:00,240 INFO L87 Difference]: Start difference. First operand 1574 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:40:00,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:00,425 INFO L93 Difference]: Finished difference Result 2984 states and 11776 transitions. [2020-01-16 18:40:00,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:00,426 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:00,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:00,434 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:40:00,434 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:40:00,434 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 18:40:00,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:40:00,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1582. [2020-01-16 18:40:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:40:00,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7043 transitions. [2020-01-16 18:40:00,503 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7043 transitions. Word has length 28 [2020-01-16 18:40:00,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:00,503 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7043 transitions. [2020-01-16 18:40:00,503 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:00,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7043 transitions. [2020-01-16 18:40:00,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:00,505 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:00,506 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 18:40:00,506 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 18:40:00,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:00,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1296241294, now seen corresponding path program 592 times [2020-01-16 18:40:00,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:00,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482522914] [2020-01-16 18:40:00,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:00,978 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:40:01,104 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:01,111 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 18:40:01,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482522914] [2020-01-16 18:40:01,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:01,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:01,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453354232] [2020-01-16 18:40:01,112 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:01,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:01,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:01,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:01,112 INFO L87 Difference]: Start difference. First operand 1582 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:40:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:01,328 INFO L93 Difference]: Finished difference Result 2981 states and 11763 transitions. [2020-01-16 18:40:01,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:01,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:01,336 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:40:01,337 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:40:01,337 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 18:40:01,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:40:01,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1574. [2020-01-16 18:40:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:40:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7024 transitions. [2020-01-16 18:40:01,404 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7024 transitions. Word has length 28 [2020-01-16 18:40:01,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:01,404 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7024 transitions. [2020-01-16 18:40:01,404 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:01,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7024 transitions. [2020-01-16 18:40:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:01,406 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:01,406 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 18:40:01,406 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 18:40:01,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:01,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1955632834, now seen corresponding path program 593 times [2020-01-16 18:40:01,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:01,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58255872] [2020-01-16 18:40:01,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:01,996 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:02,003 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 18:40:02,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58255872] [2020-01-16 18:40:02,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:02,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:02,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073169708] [2020-01-16 18:40:02,004 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:02,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:02,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:02,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:02,005 INFO L87 Difference]: Start difference. First operand 1574 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:40:02,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:02,282 INFO L93 Difference]: Finished difference Result 2968 states and 11738 transitions. [2020-01-16 18:40:02,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:02,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:02,290 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:40:02,290 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:40:02,291 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 18:40:02,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:40:02,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1578. [2020-01-16 18:40:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:40:02,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7031 transitions. [2020-01-16 18:40:02,357 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7031 transitions. Word has length 28 [2020-01-16 18:40:02,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:02,357 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7031 transitions. [2020-01-16 18:40:02,357 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:02,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7031 transitions. [2020-01-16 18:40:02,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:02,359 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:02,359 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 18:40:02,359 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 18:40:02,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:02,359 INFO L82 PathProgramCache]: Analyzing trace with hash -849929466, now seen corresponding path program 594 times [2020-01-16 18:40:02,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:02,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411253847] [2020-01-16 18:40:02,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:02,953 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:02,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:02,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411253847] [2020-01-16 18:40:02,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:02,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:02,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605313298] [2020-01-16 18:40:02,961 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:02,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:02,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:02,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:02,961 INFO L87 Difference]: Start difference. First operand 1578 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:40:03,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:03,177 INFO L93 Difference]: Finished difference Result 2971 states and 11740 transitions. [2020-01-16 18:40:03,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:03,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:03,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:03,184 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 18:40:03,185 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:40:03,185 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 18:40:03,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:40:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1569. [2020-01-16 18:40:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:40:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7011 transitions. [2020-01-16 18:40:03,250 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7011 transitions. Word has length 28 [2020-01-16 18:40:03,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:03,250 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7011 transitions. [2020-01-16 18:40:03,250 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:03,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7011 transitions. [2020-01-16 18:40:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:03,252 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:03,252 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 18:40:03,252 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 18:40:03,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:03,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1343682712, now seen corresponding path program 595 times [2020-01-16 18:40:03,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:03,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491516786] [2020-01-16 18:40:03,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:03,709 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:03,839 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:40:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:03,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491516786] [2020-01-16 18:40:03,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:03,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:03,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946190385] [2020-01-16 18:40:03,846 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:03,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:03,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:03,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:03,846 INFO L87 Difference]: Start difference. First operand 1569 states and 7011 transitions. Second operand 11 states. [2020-01-16 18:40:04,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:04,080 INFO L93 Difference]: Finished difference Result 2968 states and 11743 transitions. [2020-01-16 18:40:04,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:04,080 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:04,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:04,087 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:40:04,088 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:40:04,088 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 18:40:04,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:40:04,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1577. [2020-01-16 18:40:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:40:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7033 transitions. [2020-01-16 18:40:04,155 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7033 transitions. Word has length 28 [2020-01-16 18:40:04,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:04,155 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7033 transitions. [2020-01-16 18:40:04,155 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:04,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7033 transitions. [2020-01-16 18:40:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:04,157 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:04,157 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:04,157 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 18:40:04,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:04,158 INFO L82 PathProgramCache]: Analyzing trace with hash 890424782, now seen corresponding path program 596 times [2020-01-16 18:40:04,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:04,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263125295] [2020-01-16 18:40:04,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:04,739 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:40:04,745 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 18:40:04,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263125295] [2020-01-16 18:40:04,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:04,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:04,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269022510] [2020-01-16 18:40:04,746 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:04,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:04,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:04,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:04,747 INFO L87 Difference]: Start difference. First operand 1577 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:40:04,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:04,958 INFO L93 Difference]: Finished difference Result 2964 states and 11731 transitions. [2020-01-16 18:40:04,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:04,958 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:04,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:04,965 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:40:04,966 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:40:04,966 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 18:40:05,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:40:05,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1573. [2020-01-16 18:40:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:40:05,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7022 transitions. [2020-01-16 18:40:05,033 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7022 transitions. Word has length 28 [2020-01-16 18:40:05,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:05,033 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7022 transitions. [2020-01-16 18:40:05,033 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:05,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7022 transitions. [2020-01-16 18:40:05,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:05,036 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:05,036 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 18:40:05,036 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 18:40:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:05,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1878199204, now seen corresponding path program 597 times [2020-01-16 18:40:05,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:05,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890899605] [2020-01-16 18:40:05,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:05,504 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:05,632 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:40:05,639 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 18:40:05,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890899605] [2020-01-16 18:40:05,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:05,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:05,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140046849] [2020-01-16 18:40:05,640 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:05,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:05,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:05,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:05,640 INFO L87 Difference]: Start difference. First operand 1573 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:40:05,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:05,862 INFO L93 Difference]: Finished difference Result 2974 states and 11754 transitions. [2020-01-16 18:40:05,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:05,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:05,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:05,870 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:40:05,870 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:40:05,870 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 18:40:05,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:40:05,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1580. [2020-01-16 18:40:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:40:05,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7035 transitions. [2020-01-16 18:40:05,936 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7035 transitions. Word has length 28 [2020-01-16 18:40:05,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:05,936 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7035 transitions. [2020-01-16 18:40:05,936 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:05,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7035 transitions. [2020-01-16 18:40:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:05,938 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:05,938 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 18:40:05,938 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 18:40:05,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:05,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1306744398, now seen corresponding path program 598 times [2020-01-16 18:40:05,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:05,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541488297] [2020-01-16 18:40:05,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:06,434 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:40:06,565 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:40:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:06,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541488297] [2020-01-16 18:40:06,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:06,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:06,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464504691] [2020-01-16 18:40:06,573 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:06,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:06,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:06,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:06,573 INFO L87 Difference]: Start difference. First operand 1580 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:40:06,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:06,790 INFO L93 Difference]: Finished difference Result 2973 states and 11745 transitions. [2020-01-16 18:40:06,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:06,791 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:06,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:06,798 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:40:06,799 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 18:40:06,799 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 18:40:06,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 18:40:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1573. [2020-01-16 18:40:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:40:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7018 transitions. [2020-01-16 18:40:06,866 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7018 transitions. Word has length 28 [2020-01-16 18:40:06,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:06,866 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7018 transitions. [2020-01-16 18:40:06,866 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:06,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7018 transitions. [2020-01-16 18:40:06,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:06,869 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:06,869 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 18:40:06,869 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 18:40:06,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:06,869 INFO L82 PathProgramCache]: Analyzing trace with hash 355194980, now seen corresponding path program 599 times [2020-01-16 18:40:06,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:06,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068419818] [2020-01-16 18:40:06,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:07,339 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:40:07,469 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:40:07,475 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 18:40:07,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068419818] [2020-01-16 18:40:07,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:07,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:07,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351847543] [2020-01-16 18:40:07,476 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:07,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:07,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:07,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:07,477 INFO L87 Difference]: Start difference. First operand 1573 states and 7018 transitions. Second operand 11 states. [2020-01-16 18:40:07,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:07,687 INFO L93 Difference]: Finished difference Result 2963 states and 11725 transitions. [2020-01-16 18:40:07,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:07,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:07,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:07,694 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:40:07,694 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 18:40:07,695 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 18:40:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 18:40:07,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1577. [2020-01-16 18:40:07,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:40:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7025 transitions. [2020-01-16 18:40:07,760 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7025 transitions. Word has length 28 [2020-01-16 18:40:07,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:07,760 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7025 transitions. [2020-01-16 18:40:07,760 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:07,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7025 transitions. [2020-01-16 18:40:07,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:07,763 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:07,763 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 18:40:07,763 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 18:40:07,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:07,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1844599976, now seen corresponding path program 600 times [2020-01-16 18:40:07,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:07,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578582574] [2020-01-16 18:40:07,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:08,349 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:40:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:08,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578582574] [2020-01-16 18:40:08,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:08,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:08,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356472862] [2020-01-16 18:40:08,356 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:08,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:08,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:08,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:08,357 INFO L87 Difference]: Start difference. First operand 1577 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:40:08,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:08,612 INFO L93 Difference]: Finished difference Result 2966 states and 11727 transitions. [2020-01-16 18:40:08,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:08,612 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:08,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:08,620 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:40:08,620 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 18:40:08,620 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 18:40:08,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 18:40:08,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1555. [2020-01-16 18:40:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 18:40:08,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6981 transitions. [2020-01-16 18:40:08,686 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6981 transitions. Word has length 28 [2020-01-16 18:40:08,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:08,687 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 6981 transitions. [2020-01-16 18:40:08,687 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:08,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6981 transitions. [2020-01-16 18:40:08,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:08,689 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:08,689 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:08,689 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 18:40:08,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:08,690 INFO L82 PathProgramCache]: Analyzing trace with hash -208706742, now seen corresponding path program 601 times [2020-01-16 18:40:08,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:08,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655066788] [2020-01-16 18:40:08,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:09,282 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:09,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:09,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655066788] [2020-01-16 18:40:09,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:09,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:09,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402184353] [2020-01-16 18:40:09,290 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:09,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:09,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:09,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:09,290 INFO L87 Difference]: Start difference. First operand 1555 states and 6981 transitions. Second operand 11 states. [2020-01-16 18:40:09,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:09,490 INFO L93 Difference]: Finished difference Result 2994 states and 11845 transitions. [2020-01-16 18:40:09,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:09,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:09,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:09,498 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 18:40:09,498 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:40:09,498 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 18:40:09,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:40:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1584. [2020-01-16 18:40:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:40:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7085 transitions. [2020-01-16 18:40:09,565 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7085 transitions. Word has length 28 [2020-01-16 18:40:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:09,565 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7085 transitions. [2020-01-16 18:40:09,565 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7085 transitions. [2020-01-16 18:40:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:09,568 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:09,568 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 18:40:09,568 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 18:40:09,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash 535995756, now seen corresponding path program 602 times [2020-01-16 18:40:09,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:09,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030673439] [2020-01-16 18:40:09,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:10,057 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:40:10,187 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:10,194 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030673439] [2020-01-16 18:40:10,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:10,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:10,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099825866] [2020-01-16 18:40:10,195 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:10,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:10,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:10,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:10,195 INFO L87 Difference]: Start difference. First operand 1584 states and 7085 transitions. Second operand 11 states. [2020-01-16 18:40:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:10,354 INFO L93 Difference]: Finished difference Result 2998 states and 11846 transitions. [2020-01-16 18:40:10,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:10,355 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:10,362 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 18:40:10,362 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 18:40:10,363 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:40:10,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 18:40:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1577. [2020-01-16 18:40:10,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:40:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7065 transitions. [2020-01-16 18:40:10,428 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7065 transitions. Word has length 28 [2020-01-16 18:40:10,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:10,428 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7065 transitions. [2020-01-16 18:40:10,428 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:10,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7065 transitions. [2020-01-16 18:40:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:10,431 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:10,431 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 18:40:10,431 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 18:40:10,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:10,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1402234216, now seen corresponding path program 603 times [2020-01-16 18:40:10,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:10,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251545200] [2020-01-16 18:40:10,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:11,018 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:11,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251545200] [2020-01-16 18:40:11,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:11,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:11,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901916518] [2020-01-16 18:40:11,026 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:11,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:11,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:11,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:11,026 INFO L87 Difference]: Start difference. First operand 1577 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:40:11,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:11,228 INFO L93 Difference]: Finished difference Result 2991 states and 11833 transitions. [2020-01-16 18:40:11,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:11,228 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:11,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:11,235 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:40:11,235 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:40:11,235 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 18:40:11,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:40:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1583. [2020-01-16 18:40:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:40:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7076 transitions. [2020-01-16 18:40:11,301 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7076 transitions. Word has length 28 [2020-01-16 18:40:11,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:11,301 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7076 transitions. [2020-01-16 18:40:11,301 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:11,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7076 transitions. [2020-01-16 18:40:11,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:11,304 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:11,304 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 18:40:11,304 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 18:40:11,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:11,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1403328084, now seen corresponding path program 604 times [2020-01-16 18:40:11,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:11,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215479808] [2020-01-16 18:40:11,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:11,761 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:11,888 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:11,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215479808] [2020-01-16 18:40:11,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:11,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:11,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101610405] [2020-01-16 18:40:11,895 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:11,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:11,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:11,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:11,896 INFO L87 Difference]: Start difference. First operand 1583 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:40:12,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:12,096 INFO L93 Difference]: Finished difference Result 2993 states and 11831 transitions. [2020-01-16 18:40:12,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:12,097 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:12,104 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:40:12,104 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 18:40:12,105 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 18:40:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 18:40:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1577. [2020-01-16 18:40:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:40:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7059 transitions. [2020-01-16 18:40:12,172 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7059 transitions. Word has length 28 [2020-01-16 18:40:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:12,172 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7059 transitions. [2020-01-16 18:40:12,172 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:12,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7059 transitions. [2020-01-16 18:40:12,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:12,174 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:12,174 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 18:40:12,174 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 18:40:12,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:12,174 INFO L82 PathProgramCache]: Analyzing trace with hash -537089624, now seen corresponding path program 605 times [2020-01-16 18:40:12,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:12,175 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723458975] [2020-01-16 18:40:12,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:12,684 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:40:12,811 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:12,818 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 18:40:12,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723458975] [2020-01-16 18:40:12,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:12,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:12,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888385851] [2020-01-16 18:40:12,819 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:12,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:12,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:12,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:12,820 INFO L87 Difference]: Start difference. First operand 1577 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:40:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:12,969 INFO L93 Difference]: Finished difference Result 3003 states and 11850 transitions. [2020-01-16 18:40:12,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:12,970 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:12,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:12,977 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:40:12,977 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:40:12,977 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 18:40:13,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:40:13,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1587. [2020-01-16 18:40:13,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:40:13,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7076 transitions. [2020-01-16 18:40:13,044 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7076 transitions. Word has length 28 [2020-01-16 18:40:13,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:13,044 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7076 transitions. [2020-01-16 18:40:13,044 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:13,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7076 transitions. [2020-01-16 18:40:13,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:13,046 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:13,046 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 18:40:13,046 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 18:40:13,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:13,047 INFO L82 PathProgramCache]: Analyzing trace with hash 207612874, now seen corresponding path program 606 times [2020-01-16 18:40:13,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:13,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131028746] [2020-01-16 18:40:13,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:13,537 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:13,666 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:13,672 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 18:40:13,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131028746] [2020-01-16 18:40:13,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:13,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:13,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621037935] [2020-01-16 18:40:13,673 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:13,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:13,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:13,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:13,673 INFO L87 Difference]: Start difference. First operand 1587 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:40:13,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:13,881 INFO L93 Difference]: Finished difference Result 3001 states and 11838 transitions. [2020-01-16 18:40:13,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:13,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:13,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:13,888 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:40:13,888 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:40:13,889 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 18:40:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:40:13,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1569. [2020-01-16 18:40:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:40:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7038 transitions. [2020-01-16 18:40:13,954 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7038 transitions. Word has length 28 [2020-01-16 18:40:13,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:13,954 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7038 transitions. [2020-01-16 18:40:13,954 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:13,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7038 transitions. [2020-01-16 18:40:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:13,956 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:13,957 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 18:40:13,957 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 18:40:13,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:13,957 INFO L82 PathProgramCache]: Analyzing trace with hash -715053008, now seen corresponding path program 607 times [2020-01-16 18:40:13,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:13,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157391630] [2020-01-16 18:40:13,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:14,549 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:14,555 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157391630] [2020-01-16 18:40:14,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:14,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:14,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580692861] [2020-01-16 18:40:14,555 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:14,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:14,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:14,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:14,556 INFO L87 Difference]: Start difference. First operand 1569 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:40:14,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:14,752 INFO L93 Difference]: Finished difference Result 2980 states and 11802 transitions. [2020-01-16 18:40:14,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:14,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:14,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:14,760 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:40:14,761 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:40:14,761 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 18:40:14,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:40:14,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1581. [2020-01-16 18:40:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:40:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7069 transitions. [2020-01-16 18:40:14,826 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7069 transitions. Word has length 28 [2020-01-16 18:40:14,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:14,826 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7069 transitions. [2020-01-16 18:40:14,826 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:14,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7069 transitions. [2020-01-16 18:40:14,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:14,829 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:14,829 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 18:40:14,829 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 18:40:14,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:14,829 INFO L82 PathProgramCache]: Analyzing trace with hash 29649490, now seen corresponding path program 608 times [2020-01-16 18:40:14,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:14,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976276404] [2020-01-16 18:40:14,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:15,311 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:40:15,440 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:15,446 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 18:40:15,447 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976276404] [2020-01-16 18:40:15,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:15,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:15,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283177913] [2020-01-16 18:40:15,447 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:15,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:15,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:15,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:15,448 INFO L87 Difference]: Start difference. First operand 1581 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:40:15,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:15,597 INFO L93 Difference]: Finished difference Result 2984 states and 11803 transitions. [2020-01-16 18:40:15,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:15,597 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:15,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:15,605 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:40:15,605 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:40:15,605 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 18:40:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:40:15,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1574. [2020-01-16 18:40:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:40:15,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7051 transitions. [2020-01-16 18:40:15,671 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7051 transitions. Word has length 28 [2020-01-16 18:40:15,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:15,671 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7051 transitions. [2020-01-16 18:40:15,671 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:15,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7051 transitions. [2020-01-16 18:40:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:15,673 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:15,673 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 18:40:15,673 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 18:40:15,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:15,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1433743528, now seen corresponding path program 609 times [2020-01-16 18:40:15,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:15,674 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655637747] [2020-01-16 18:40:15,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:16,262 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:16,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655637747] [2020-01-16 18:40:16,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:16,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:16,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185487363] [2020-01-16 18:40:16,270 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:16,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:16,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:16,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:16,271 INFO L87 Difference]: Start difference. First operand 1574 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:40:16,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:16,460 INFO L93 Difference]: Finished difference Result 2971 states and 11778 transitions. [2020-01-16 18:40:16,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:16,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:16,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:16,468 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 18:40:16,468 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 18:40:16,468 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 18:40:16,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 18:40:16,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1578. [2020-01-16 18:40:16,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:40:16,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7058 transitions. [2020-01-16 18:40:16,533 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7058 transitions. Word has length 28 [2020-01-16 18:40:16,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:16,534 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7058 transitions. [2020-01-16 18:40:16,534 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7058 transitions. [2020-01-16 18:40:16,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:16,536 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:16,536 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 18:40:16,536 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 18:40:16,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:16,536 INFO L82 PathProgramCache]: Analyzing trace with hash 862288722, now seen corresponding path program 610 times [2020-01-16 18:40:16,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:16,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801508976] [2020-01-16 18:40:16,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:16,996 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:40:17,125 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:17,132 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 18:40:17,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801508976] [2020-01-16 18:40:17,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:17,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:17,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047830398] [2020-01-16 18:40:17,133 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:17,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:17,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:17,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:17,133 INFO L87 Difference]: Start difference. First operand 1578 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:40:17,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:17,348 INFO L93 Difference]: Finished difference Result 2969 states and 11770 transitions. [2020-01-16 18:40:17,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:17,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:17,355 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 18:40:17,355 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:40:17,355 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:40:17,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:40:17,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1574. [2020-01-16 18:40:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:40:17,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7047 transitions. [2020-01-16 18:40:17,421 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7047 transitions. Word has length 28 [2020-01-16 18:40:17,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:17,421 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7047 transitions. [2020-01-16 18:40:17,421 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:17,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7047 transitions. [2020-01-16 18:40:17,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:17,423 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:17,423 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 18:40:17,423 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 18:40:17,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:17,423 INFO L82 PathProgramCache]: Analyzing trace with hash -505580312, now seen corresponding path program 611 times [2020-01-16 18:40:17,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:17,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466632944] [2020-01-16 18:40:17,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:17,898 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:40:18,027 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:18,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466632944] [2020-01-16 18:40:18,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:18,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:18,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287085369] [2020-01-16 18:40:18,035 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:18,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:18,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:18,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:18,035 INFO L87 Difference]: Start difference. First operand 1574 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:40:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:18,190 INFO L93 Difference]: Finished difference Result 2980 states and 11790 transitions. [2020-01-16 18:40:18,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:18,190 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:18,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:18,197 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:40:18,197 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:40:18,198 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 18:40:18,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:40:18,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1579. [2020-01-16 18:40:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:40:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7055 transitions. [2020-01-16 18:40:18,263 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7055 transitions. Word has length 28 [2020-01-16 18:40:18,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:18,263 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7055 transitions. [2020-01-16 18:40:18,263 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:18,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7055 transitions. [2020-01-16 18:40:18,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:18,265 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:18,265 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 18:40:18,265 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 18:40:18,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:18,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1821737616, now seen corresponding path program 612 times [2020-01-16 18:40:18,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:18,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230183735] [2020-01-16 18:40:18,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:18,754 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:40:18,880 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:18,886 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 18:40:18,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230183735] [2020-01-16 18:40:18,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:18,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:18,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929610410] [2020-01-16 18:40:18,887 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:18,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:18,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:18,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:18,887 INFO L87 Difference]: Start difference. First operand 1579 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:40:19,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:19,081 INFO L93 Difference]: Finished difference Result 2974 states and 11774 transitions. [2020-01-16 18:40:19,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:19,081 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:19,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:19,089 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:40:19,089 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:40:19,089 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 18:40:19,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:40:19,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1569. [2020-01-16 18:40:19,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:40:19,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7033 transitions. [2020-01-16 18:40:19,155 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7033 transitions. Word has length 28 [2020-01-16 18:40:19,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:19,155 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7033 transitions. [2020-01-16 18:40:19,155 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7033 transitions. [2020-01-16 18:40:19,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:19,157 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:19,157 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:19,157 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 18:40:19,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:19,158 INFO L82 PathProgramCache]: Analyzing trace with hash -704549904, now seen corresponding path program 613 times [2020-01-16 18:40:19,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:19,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204032762] [2020-01-16 18:40:19,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:19,600 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:40:19,727 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:19,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204032762] [2020-01-16 18:40:19,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:19,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:19,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701942687] [2020-01-16 18:40:19,735 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:19,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:19,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:19,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:19,735 INFO L87 Difference]: Start difference. First operand 1569 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:40:19,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:19,923 INFO L93 Difference]: Finished difference Result 2972 states and 11782 transitions. [2020-01-16 18:40:19,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:19,924 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:19,931 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:40:19,932 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:40:19,932 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 18:40:19,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:40:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1579. [2020-01-16 18:40:19,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:40:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7059 transitions. [2020-01-16 18:40:19,997 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7059 transitions. Word has length 28 [2020-01-16 18:40:19,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:19,997 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7059 transitions. [2020-01-16 18:40:19,997 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:19,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7059 transitions. [2020-01-16 18:40:19,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:20,000 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:20,000 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 18:40:20,000 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 18:40:20,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:20,000 INFO L82 PathProgramCache]: Analyzing trace with hash 784855092, now seen corresponding path program 614 times [2020-01-16 18:40:20,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:20,000 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024346967] [2020-01-16 18:40:20,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:20,450 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:20,581 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:20,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024346967] [2020-01-16 18:40:20,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:20,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:20,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450468145] [2020-01-16 18:40:20,588 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:20,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:20,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:20,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:20,588 INFO L87 Difference]: Start difference. First operand 1579 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:40:20,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:20,782 INFO L93 Difference]: Finished difference Result 2974 states and 11780 transitions. [2020-01-16 18:40:20,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:20,783 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:20,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:20,790 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:40:20,790 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:40:20,791 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 18:40:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:40:20,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1573. [2020-01-16 18:40:20,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:40:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 18:40:20,856 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 18:40:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:20,856 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 18:40:20,856 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:20,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 18:40:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:20,858 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:20,858 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 18:40:20,858 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 18:40:20,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:20,858 INFO L82 PathProgramCache]: Analyzing trace with hash -166694326, now seen corresponding path program 615 times [2020-01-16 18:40:20,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:20,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241648987] [2020-01-16 18:40:20,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:21,444 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:21,451 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 18:40:21,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241648987] [2020-01-16 18:40:21,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:21,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:21,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301547657] [2020-01-16 18:40:21,452 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:21,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:21,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:21,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:21,453 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:40:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:21,671 INFO L93 Difference]: Finished difference Result 2966 states and 11764 transitions. [2020-01-16 18:40:21,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:21,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:21,679 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:40:21,680 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:40:21,680 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 18:40:21,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:40:21,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1577. [2020-01-16 18:40:21,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:40:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7051 transitions. [2020-01-16 18:40:21,746 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7051 transitions. Word has length 28 [2020-01-16 18:40:21,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:21,746 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7051 transitions. [2020-01-16 18:40:21,746 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:21,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7051 transitions. [2020-01-16 18:40:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:21,748 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:21,748 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 18:40:21,748 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 18:40:21,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:21,748 INFO L82 PathProgramCache]: Analyzing trace with hash -738149132, now seen corresponding path program 616 times [2020-01-16 18:40:21,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:21,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458422553] [2020-01-16 18:40:21,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:22,321 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:22,327 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 18:40:22,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458422553] [2020-01-16 18:40:22,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:22,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:22,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40115875] [2020-01-16 18:40:22,328 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:22,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:22,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:22,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:22,329 INFO L87 Difference]: Start difference. First operand 1577 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:40:22,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:22,577 INFO L93 Difference]: Finished difference Result 2964 states and 11756 transitions. [2020-01-16 18:40:22,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:22,577 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:22,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:22,585 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:40:22,585 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:40:22,585 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 18:40:22,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:40:22,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1573. [2020-01-16 18:40:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:40:22,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7040 transitions. [2020-01-16 18:40:22,651 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7040 transitions. Word has length 28 [2020-01-16 18:40:22,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:22,651 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7040 transitions. [2020-01-16 18:40:22,651 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7040 transitions. [2020-01-16 18:40:22,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:22,653 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:22,653 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 18:40:22,653 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 18:40:22,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:22,653 INFO L82 PathProgramCache]: Analyzing trace with hash 249625290, now seen corresponding path program 617 times [2020-01-16 18:40:22,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:22,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849392630] [2020-01-16 18:40:22,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:23,112 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:23,240 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:23,246 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 18:40:23,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849392630] [2020-01-16 18:40:23,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:23,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:23,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2888085] [2020-01-16 18:40:23,247 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:23,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:23,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:23,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:23,247 INFO L87 Difference]: Start difference. First operand 1573 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:40:23,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:23,464 INFO L93 Difference]: Finished difference Result 2970 states and 11768 transitions. [2020-01-16 18:40:23,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:23,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:23,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:23,472 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:40:23,472 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:40:23,472 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 18:40:23,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:40:23,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1577. [2020-01-16 18:40:23,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:40:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7047 transitions. [2020-01-16 18:40:23,538 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7047 transitions. Word has length 28 [2020-01-16 18:40:23,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:23,538 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7047 transitions. [2020-01-16 18:40:23,538 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:23,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7047 transitions. [2020-01-16 18:40:23,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:23,540 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:23,540 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:23,540 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 18:40:23,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:23,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1811234512, now seen corresponding path program 618 times [2020-01-16 18:40:23,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:23,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935849052] [2020-01-16 18:40:23,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:23,999 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:24,128 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:24,135 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 18:40:24,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935849052] [2020-01-16 18:40:24,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:24,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:24,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995767062] [2020-01-16 18:40:24,136 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:24,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:24,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:24,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:24,136 INFO L87 Difference]: Start difference. First operand 1577 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:40:24,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:24,343 INFO L93 Difference]: Finished difference Result 2966 states and 11756 transitions. [2020-01-16 18:40:24,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:24,343 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:24,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:24,350 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:40:24,350 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:40:24,350 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 18:40:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:40:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1569. [2020-01-16 18:40:24,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:40:24,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7029 transitions. [2020-01-16 18:40:24,416 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7029 transitions. Word has length 28 [2020-01-16 18:40:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:24,416 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7029 transitions. [2020-01-16 18:40:24,416 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7029 transitions. [2020-01-16 18:40:24,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:24,418 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:24,418 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 18:40:24,418 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 18:40:24,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:24,419 INFO L82 PathProgramCache]: Analyzing trace with hash 50655698, now seen corresponding path program 619 times [2020-01-16 18:40:24,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:24,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221896919] [2020-01-16 18:40:24,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:24,902 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:40:25,031 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:25,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221896919] [2020-01-16 18:40:25,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:25,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:25,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213303686] [2020-01-16 18:40:25,039 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:25,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:25,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:25,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:25,039 INFO L87 Difference]: Start difference. First operand 1569 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:40:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:25,219 INFO L93 Difference]: Finished difference Result 2995 states and 11824 transitions. [2020-01-16 18:40:25,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:25,220 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:25,227 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 18:40:25,227 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:40:25,228 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 18:40:25,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:40:25,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1585. [2020-01-16 18:40:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:40:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7066 transitions. [2020-01-16 18:40:25,293 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7066 transitions. Word has length 28 [2020-01-16 18:40:25,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:25,294 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7066 transitions. [2020-01-16 18:40:25,294 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7066 transitions. [2020-01-16 18:40:25,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:25,296 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:25,296 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 18:40:25,296 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 18:40:25,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:25,296 INFO L82 PathProgramCache]: Analyzing trace with hash 795358196, now seen corresponding path program 620 times [2020-01-16 18:40:25,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:25,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716777421] [2020-01-16 18:40:25,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:25,779 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:25,907 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:25,914 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 18:40:25,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716777421] [2020-01-16 18:40:25,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:25,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:25,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729350612] [2020-01-16 18:40:25,915 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:25,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:25,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:25,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:25,915 INFO L87 Difference]: Start difference. First operand 1585 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:40:26,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:26,126 INFO L93 Difference]: Finished difference Result 2993 states and 11812 transitions. [2020-01-16 18:40:26,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:26,127 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:26,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:26,133 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:40:26,133 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:40:26,133 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 18:40:26,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:40:26,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1575. [2020-01-16 18:40:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:40:26,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7043 transitions. [2020-01-16 18:40:26,199 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7043 transitions. Word has length 28 [2020-01-16 18:40:26,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:26,199 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7043 transitions. [2020-01-16 18:40:26,199 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:26,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7043 transitions. [2020-01-16 18:40:26,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:26,201 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:26,201 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:26,201 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 18:40:26,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:26,202 INFO L82 PathProgramCache]: Analyzing trace with hash 588511276, now seen corresponding path program 621 times [2020-01-16 18:40:26,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:26,202 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38568170] [2020-01-16 18:40:26,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:26,677 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:40:26,807 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:26,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:26,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38568170] [2020-01-16 18:40:26,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:26,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:26,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598700441] [2020-01-16 18:40:26,815 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:26,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:26,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:26,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:26,815 INFO L87 Difference]: Start difference. First operand 1575 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:40:26,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:26,963 INFO L93 Difference]: Finished difference Result 2986 states and 11797 transitions. [2020-01-16 18:40:26,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:26,964 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:26,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:26,971 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:40:26,971 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:40:26,971 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 18:40:27,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:40:27,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1580. [2020-01-16 18:40:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:40:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7051 transitions. [2020-01-16 18:40:27,037 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7051 transitions. Word has length 28 [2020-01-16 18:40:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:27,037 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7051 transitions. [2020-01-16 18:40:27,037 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7051 transitions. [2020-01-16 18:40:27,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:27,039 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:27,039 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:27,040 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 18:40:27,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:27,040 INFO L82 PathProgramCache]: Analyzing trace with hash -727646028, now seen corresponding path program 622 times [2020-01-16 18:40:27,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:27,040 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962558876] [2020-01-16 18:40:27,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:27,633 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:27,639 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 18:40:27,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962558876] [2020-01-16 18:40:27,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:27,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:27,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725880563] [2020-01-16 18:40:27,640 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:27,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:27,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:27,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:27,640 INFO L87 Difference]: Start difference. First operand 1580 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:40:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:27,830 INFO L93 Difference]: Finished difference Result 2980 states and 11781 transitions. [2020-01-16 18:40:27,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:27,831 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:27,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:27,838 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:40:27,838 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:40:27,838 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 18:40:27,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:40:27,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 18:40:27,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:40:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7038 transitions. [2020-01-16 18:40:27,904 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7038 transitions. Word has length 28 [2020-01-16 18:40:27,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:27,904 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7038 transitions. [2020-01-16 18:40:27,904 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7038 transitions. [2020-01-16 18:40:27,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:27,906 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:27,906 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:27,907 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 18:40:27,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:27,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1350812564, now seen corresponding path program 623 times [2020-01-16 18:40:27,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:27,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199730576] [2020-01-16 18:40:27,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:28,500 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:28,507 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199730576] [2020-01-16 18:40:28,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:28,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:28,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928846748] [2020-01-16 18:40:28,508 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:28,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:28,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:28,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:28,508 INFO L87 Difference]: Start difference. First operand 1575 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:40:28,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:28,703 INFO L93 Difference]: Finished difference Result 2981 states and 11784 transitions. [2020-01-16 18:40:28,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:28,704 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:28,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:28,711 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:40:28,711 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 18:40:28,711 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 18:40:28,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 18:40:28,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1579. [2020-01-16 18:40:28,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:40:28,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7045 transitions. [2020-01-16 18:40:28,777 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7045 transitions. Word has length 28 [2020-01-16 18:40:28,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:28,777 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7045 transitions. [2020-01-16 18:40:28,777 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7045 transitions. [2020-01-16 18:40:28,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:28,780 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:28,780 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 18:40:28,780 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 18:40:28,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:28,780 INFO L82 PathProgramCache]: Analyzing trace with hash 883294930, now seen corresponding path program 624 times [2020-01-16 18:40:28,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:28,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280331580] [2020-01-16 18:40:28,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:29,249 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:29,380 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:29,387 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280331580] [2020-01-16 18:40:29,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:29,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:29,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031520200] [2020-01-16 18:40:29,388 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:29,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:29,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:29,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:29,388 INFO L87 Difference]: Start difference. First operand 1579 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:40:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:29,645 INFO L93 Difference]: Finished difference Result 2977 states and 11772 transitions. [2020-01-16 18:40:29,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:29,645 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:29,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:29,652 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:40:29,653 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:40:29,653 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 18:40:29,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:40:29,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1563. [2020-01-16 18:40:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:40:29,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7012 transitions. [2020-01-16 18:40:29,718 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7012 transitions. Word has length 28 [2020-01-16 18:40:29,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:29,718 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7012 transitions. [2020-01-16 18:40:29,718 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:29,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7012 transitions. [2020-01-16 18:40:29,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:29,720 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:29,720 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:29,720 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 18:40:29,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:29,720 INFO L82 PathProgramCache]: Analyzing trace with hash -651605882, now seen corresponding path program 625 times [2020-01-16 18:40:29,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:29,721 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612154799] [2020-01-16 18:40:29,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:30,336 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:30,342 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612154799] [2020-01-16 18:40:30,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:30,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:30,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431094906] [2020-01-16 18:40:30,342 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:30,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:30,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:30,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:30,343 INFO L87 Difference]: Start difference. First operand 1563 states and 7012 transitions. Second operand 11 states. [2020-01-16 18:40:30,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:30,565 INFO L93 Difference]: Finished difference Result 3017 states and 11911 transitions. [2020-01-16 18:40:30,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:30,565 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:30,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:30,573 INFO L225 Difference]: With dead ends: 3017 [2020-01-16 18:40:30,573 INFO L226 Difference]: Without dead ends: 3001 [2020-01-16 18:40:30,574 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 18:40:30,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-01-16 18:40:30,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 1588. [2020-01-16 18:40:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:40:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7092 transitions. [2020-01-16 18:40:30,640 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7092 transitions. Word has length 28 [2020-01-16 18:40:30,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:30,640 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7092 transitions. [2020-01-16 18:40:30,640 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:30,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7092 transitions. [2020-01-16 18:40:30,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:30,642 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:30,642 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 18:40:30,642 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 18:40:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:30,642 INFO L82 PathProgramCache]: Analyzing trace with hash 93096616, now seen corresponding path program 626 times [2020-01-16 18:40:30,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:30,643 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411262103] [2020-01-16 18:40:30,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:31,128 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:40:31,257 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:31,264 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 18:40:31,264 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411262103] [2020-01-16 18:40:31,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:31,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:31,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261316553] [2020-01-16 18:40:31,265 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:31,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:31,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:31,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:31,265 INFO L87 Difference]: Start difference. First operand 1588 states and 7092 transitions. Second operand 11 states. [2020-01-16 18:40:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:31,445 INFO L93 Difference]: Finished difference Result 3021 states and 11912 transitions. [2020-01-16 18:40:31,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:31,445 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:31,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:31,474 INFO L225 Difference]: With dead ends: 3021 [2020-01-16 18:40:31,475 INFO L226 Difference]: Without dead ends: 2994 [2020-01-16 18:40:31,475 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 18:40:31,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-01-16 18:40:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1581. [2020-01-16 18:40:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:40:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7072 transitions. [2020-01-16 18:40:31,538 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7072 transitions. Word has length 28 [2020-01-16 18:40:31,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:31,538 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7072 transitions. [2020-01-16 18:40:31,539 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7072 transitions. [2020-01-16 18:40:31,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:31,541 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:31,541 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 18:40:31,541 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 18:40:31,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:31,541 INFO L82 PathProgramCache]: Analyzing trace with hash 959335076, now seen corresponding path program 627 times [2020-01-16 18:40:31,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:31,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935755541] [2020-01-16 18:40:31,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:32,140 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:32,147 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 18:40:32,147 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935755541] [2020-01-16 18:40:32,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:32,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:32,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228251539] [2020-01-16 18:40:32,148 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:32,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:32,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:32,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:32,148 INFO L87 Difference]: Start difference. First operand 1581 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:40:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:32,375 INFO L93 Difference]: Finished difference Result 3014 states and 11899 transitions. [2020-01-16 18:40:32,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:32,375 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:32,383 INFO L225 Difference]: With dead ends: 3014 [2020-01-16 18:40:32,383 INFO L226 Difference]: Without dead ends: 2998 [2020-01-16 18:40:32,383 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 18:40:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2020-01-16 18:40:32,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 1587. [2020-01-16 18:40:32,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:40:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7083 transitions. [2020-01-16 18:40:32,449 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7083 transitions. Word has length 28 [2020-01-16 18:40:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:32,450 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7083 transitions. [2020-01-16 18:40:32,450 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:32,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7083 transitions. [2020-01-16 18:40:32,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:32,452 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:32,452 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 18:40:32,452 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 18:40:32,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:32,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1846227224, now seen corresponding path program 628 times [2020-01-16 18:40:32,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:32,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992477631] [2020-01-16 18:40:32,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:32,926 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:33,055 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:33,062 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 18:40:33,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992477631] [2020-01-16 18:40:33,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:33,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:33,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223612627] [2020-01-16 18:40:33,063 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:33,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:33,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:33,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:33,063 INFO L87 Difference]: Start difference. First operand 1587 states and 7083 transitions. Second operand 11 states. [2020-01-16 18:40:33,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:33,307 INFO L93 Difference]: Finished difference Result 3016 states and 11897 transitions. [2020-01-16 18:40:33,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:33,308 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:33,315 INFO L225 Difference]: With dead ends: 3016 [2020-01-16 18:40:33,315 INFO L226 Difference]: Without dead ends: 2992 [2020-01-16 18:40:33,316 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 18:40:33,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2020-01-16 18:40:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1581. [2020-01-16 18:40:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:40:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7066 transitions. [2020-01-16 18:40:33,381 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7066 transitions. Word has length 28 [2020-01-16 18:40:33,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:33,382 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7066 transitions. [2020-01-16 18:40:33,382 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7066 transitions. [2020-01-16 18:40:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:33,384 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:33,384 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:33,384 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 18:40:33,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:33,384 INFO L82 PathProgramCache]: Analyzing trace with hash -979988764, now seen corresponding path program 629 times [2020-01-16 18:40:33,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:33,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677062076] [2020-01-16 18:40:33,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:33,871 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-01-16 18:40:33,999 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:34,006 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 18:40:34,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677062076] [2020-01-16 18:40:34,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:34,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:34,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265430267] [2020-01-16 18:40:34,007 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:34,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:34,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:34,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:34,007 INFO L87 Difference]: Start difference. First operand 1581 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:40:34,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:34,189 INFO L93 Difference]: Finished difference Result 3026 states and 11916 transitions. [2020-01-16 18:40:34,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:34,189 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:34,196 INFO L225 Difference]: With dead ends: 3026 [2020-01-16 18:40:34,196 INFO L226 Difference]: Without dead ends: 3006 [2020-01-16 18:40:34,197 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 18:40:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2020-01-16 18:40:34,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1591. [2020-01-16 18:40:34,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 18:40:34,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7083 transitions. [2020-01-16 18:40:34,263 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7083 transitions. Word has length 28 [2020-01-16 18:40:34,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:34,263 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7083 transitions. [2020-01-16 18:40:34,263 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:34,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7083 transitions. [2020-01-16 18:40:34,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:34,265 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:34,265 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 18:40:34,266 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 18:40:34,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:34,266 INFO L82 PathProgramCache]: Analyzing trace with hash -235286266, now seen corresponding path program 630 times [2020-01-16 18:40:34,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:34,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928183000] [2020-01-16 18:40:34,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:34,882 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:34,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928183000] [2020-01-16 18:40:34,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:34,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:34,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035294676] [2020-01-16 18:40:34,890 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:34,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:34,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:34,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:34,890 INFO L87 Difference]: Start difference. First operand 1591 states and 7083 transitions. Second operand 11 states. [2020-01-16 18:40:35,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:35,091 INFO L93 Difference]: Finished difference Result 3024 states and 11904 transitions. [2020-01-16 18:40:35,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:35,091 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:35,099 INFO L225 Difference]: With dead ends: 3024 [2020-01-16 18:40:35,099 INFO L226 Difference]: Without dead ends: 2988 [2020-01-16 18:40:35,099 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 18:40:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-01-16 18:40:35,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1573. [2020-01-16 18:40:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:40:35,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7043 transitions. [2020-01-16 18:40:35,164 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7043 transitions. Word has length 28 [2020-01-16 18:40:35,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:35,165 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7043 transitions. [2020-01-16 18:40:35,165 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:35,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7043 transitions. [2020-01-16 18:40:35,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:35,167 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:35,167 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:35,167 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 18:40:35,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:35,167 INFO L82 PathProgramCache]: Analyzing trace with hash -63860560, now seen corresponding path program 631 times [2020-01-16 18:40:35,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:35,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883677316] [2020-01-16 18:40:35,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:35,777 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:35,784 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 18:40:35,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883677316] [2020-01-16 18:40:35,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:35,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:35,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738613130] [2020-01-16 18:40:35,785 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:35,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:35,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:35,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:35,786 INFO L87 Difference]: Start difference. First operand 1573 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:40:36,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:36,006 INFO L93 Difference]: Finished difference Result 3013 states and 11895 transitions. [2020-01-16 18:40:36,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:36,006 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:36,014 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 18:40:36,014 INFO L226 Difference]: Without dead ends: 2997 [2020-01-16 18:40:36,014 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 18:40:36,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2020-01-16 18:40:36,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1587. [2020-01-16 18:40:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:40:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7082 transitions. [2020-01-16 18:40:36,080 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7082 transitions. Word has length 28 [2020-01-16 18:40:36,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:36,080 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7082 transitions. [2020-01-16 18:40:36,080 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7082 transitions. [2020-01-16 18:40:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:36,083 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:36,083 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 18:40:36,083 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 18:40:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:36,083 INFO L82 PathProgramCache]: Analyzing trace with hash 680841938, now seen corresponding path program 632 times [2020-01-16 18:40:36,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:36,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361327873] [2020-01-16 18:40:36,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:36,564 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:40:36,691 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:36,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361327873] [2020-01-16 18:40:36,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:36,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:36,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120362455] [2020-01-16 18:40:36,698 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:36,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:36,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:36,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:36,699 INFO L87 Difference]: Start difference. First operand 1587 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:40:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:36,863 INFO L93 Difference]: Finished difference Result 3017 states and 11896 transitions. [2020-01-16 18:40:36,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:36,863 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:36,871 INFO L225 Difference]: With dead ends: 3017 [2020-01-16 18:40:36,871 INFO L226 Difference]: Without dead ends: 2990 [2020-01-16 18:40:36,871 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 18:40:36,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-01-16 18:40:36,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1580. [2020-01-16 18:40:36,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:40:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7062 transitions. [2020-01-16 18:40:36,938 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7062 transitions. Word has length 28 [2020-01-16 18:40:36,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:36,939 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7062 transitions. [2020-01-16 18:40:36,939 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:36,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7062 transitions. [2020-01-16 18:40:36,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:36,941 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:36,941 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:36,941 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 18:40:36,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:36,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1011850596, now seen corresponding path program 633 times [2020-01-16 18:40:36,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:36,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561061987] [2020-01-16 18:40:36,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:37,547 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:37,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561061987] [2020-01-16 18:40:37,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:37,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:37,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293633682] [2020-01-16 18:40:37,553 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:37,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:37,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:37,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:37,554 INFO L87 Difference]: Start difference. First operand 1580 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:40:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:37,758 INFO L93 Difference]: Finished difference Result 3009 states and 11881 transitions. [2020-01-16 18:40:37,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:37,759 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:37,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:37,766 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:40:37,766 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 18:40:37,766 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 18:40:37,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 18:40:37,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1586. [2020-01-16 18:40:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:40:37,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7073 transitions. [2020-01-16 18:40:37,860 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7073 transitions. Word has length 28 [2020-01-16 18:40:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:37,860 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7073 transitions. [2020-01-16 18:40:37,860 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7073 transitions. [2020-01-16 18:40:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:37,862 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:37,862 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:37,863 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 18:40:37,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:37,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1929800786, now seen corresponding path program 634 times [2020-01-16 18:40:37,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:37,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008737346] [2020-01-16 18:40:37,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:38,480 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:38,486 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 18:40:38,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008737346] [2020-01-16 18:40:38,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:38,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:38,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899950730] [2020-01-16 18:40:38,487 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:38,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:38,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:38,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:38,487 INFO L87 Difference]: Start difference. First operand 1586 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:40:38,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:38,684 INFO L93 Difference]: Finished difference Result 3010 states and 11877 transitions. [2020-01-16 18:40:38,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:38,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:38,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:38,692 INFO L225 Difference]: With dead ends: 3010 [2020-01-16 18:40:38,692 INFO L226 Difference]: Without dead ends: 2987 [2020-01-16 18:40:38,692 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 18:40:38,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-01-16 18:40:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1580. [2020-01-16 18:40:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:40:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7056 transitions. [2020-01-16 18:40:38,758 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7056 transitions. Word has length 28 [2020-01-16 18:40:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:38,758 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7056 transitions. [2020-01-16 18:40:38,758 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7056 transitions. [2020-01-16 18:40:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:38,760 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:38,760 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:38,760 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 18:40:38,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:38,761 INFO L82 PathProgramCache]: Analyzing trace with hash -927473244, now seen corresponding path program 635 times [2020-01-16 18:40:38,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:38,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965529131] [2020-01-16 18:40:38,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:39,242 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:40:39,370 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:39,377 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 18:40:39,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965529131] [2020-01-16 18:40:39,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:39,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:39,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883445565] [2020-01-16 18:40:39,378 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:39,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:39,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:39,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:39,378 INFO L87 Difference]: Start difference. First operand 1580 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:40:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:39,578 INFO L93 Difference]: Finished difference Result 3019 states and 11894 transitions. [2020-01-16 18:40:39,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:39,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:39,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:39,586 INFO L225 Difference]: With dead ends: 3019 [2020-01-16 18:40:39,586 INFO L226 Difference]: Without dead ends: 2999 [2020-01-16 18:40:39,586 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:40:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-01-16 18:40:39,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 1588. [2020-01-16 18:40:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:40:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7070 transitions. [2020-01-16 18:40:39,652 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7070 transitions. Word has length 28 [2020-01-16 18:40:39,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:39,652 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7070 transitions. [2020-01-16 18:40:39,652 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7070 transitions. [2020-01-16 18:40:39,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:39,654 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:39,654 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 18:40:39,654 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 18:40:39,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:39,655 INFO L82 PathProgramCache]: Analyzing trace with hash -754225552, now seen corresponding path program 636 times [2020-01-16 18:40:39,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:39,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060262641] [2020-01-16 18:40:39,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:40,135 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:40:40,264 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:40,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060262641] [2020-01-16 18:40:40,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:40,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:40,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918445426] [2020-01-16 18:40:40,270 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:40,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:40,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:40,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:40,271 INFO L87 Difference]: Start difference. First operand 1588 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:40:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:40,551 INFO L93 Difference]: Finished difference Result 3016 states and 11881 transitions. [2020-01-16 18:40:40,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:40,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:40,559 INFO L225 Difference]: With dead ends: 3016 [2020-01-16 18:40:40,559 INFO L226 Difference]: Without dead ends: 2984 [2020-01-16 18:40:40,559 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 18:40:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-01-16 18:40:40,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1573. [2020-01-16 18:40:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:40:40,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7036 transitions. [2020-01-16 18:40:40,625 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7036 transitions. Word has length 28 [2020-01-16 18:40:40,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:40,625 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7036 transitions. [2020-01-16 18:40:40,625 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:40,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7036 transitions. [2020-01-16 18:40:40,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:40,627 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:40,627 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 18:40:40,627 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 18:40:40,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:40,627 INFO L82 PathProgramCache]: Analyzing trace with hash -53357456, now seen corresponding path program 637 times [2020-01-16 18:40:40,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:40,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379458962] [2020-01-16 18:40:40,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:41,232 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:41,239 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 18:40:41,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379458962] [2020-01-16 18:40:41,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:41,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:41,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459799762] [2020-01-16 18:40:41,240 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:41,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:41,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:41,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:41,240 INFO L87 Difference]: Start difference. First operand 1573 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:40:41,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:41,523 INFO L93 Difference]: Finished difference Result 3005 states and 11873 transitions. [2020-01-16 18:40:41,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:41,523 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:41,531 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:40:41,531 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 18:40:41,531 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 18:40:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 18:40:41,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1585. [2020-01-16 18:40:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:40:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7070 transitions. [2020-01-16 18:40:41,596 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7070 transitions. Word has length 28 [2020-01-16 18:40:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:41,596 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7070 transitions. [2020-01-16 18:40:41,596 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:41,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7070 transitions. [2020-01-16 18:40:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:41,599 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:41,599 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 18:40:41,599 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 18:40:41,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:41,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1436047540, now seen corresponding path program 638 times [2020-01-16 18:40:41,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:41,599 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335177978] [2020-01-16 18:40:41,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:42,209 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:40:42,217 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 18:40:42,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335177978] [2020-01-16 18:40:42,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:42,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:42,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374397904] [2020-01-16 18:40:42,217 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:42,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:42,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:42,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:42,218 INFO L87 Difference]: Start difference. First operand 1585 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:40:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:42,450 INFO L93 Difference]: Finished difference Result 3007 states and 11871 transitions. [2020-01-16 18:40:42,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:42,451 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:42,458 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 18:40:42,459 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:40:42,459 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 18:40:42,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:40:42,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1579. [2020-01-16 18:40:42,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:40:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7053 transitions. [2020-01-16 18:40:42,524 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7053 transitions. Word has length 28 [2020-01-16 18:40:42,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:42,524 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7053 transitions. [2020-01-16 18:40:42,524 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:42,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7053 transitions. [2020-01-16 18:40:42,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:42,527 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:42,527 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 18:40:42,527 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 18:40:42,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:42,527 INFO L82 PathProgramCache]: Analyzing trace with hash -588587258, now seen corresponding path program 639 times [2020-01-16 18:40:42,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:42,527 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931658196] [2020-01-16 18:40:42,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:43,024 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:40:43,153 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:40:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:43,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931658196] [2020-01-16 18:40:43,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:43,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:43,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140293791] [2020-01-16 18:40:43,161 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:43,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:43,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:43,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:43,161 INFO L87 Difference]: Start difference. First operand 1579 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:40:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:43,445 INFO L93 Difference]: Finished difference Result 3004 states and 11865 transitions. [2020-01-16 18:40:43,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:43,446 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:43,453 INFO L225 Difference]: With dead ends: 3004 [2020-01-16 18:40:43,453 INFO L226 Difference]: Without dead ends: 2988 [2020-01-16 18:40:43,453 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 18:40:43,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-01-16 18:40:43,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1585. [2020-01-16 18:40:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:40:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7064 transitions. [2020-01-16 18:40:43,520 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7064 transitions. Word has length 28 [2020-01-16 18:40:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:43,521 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7064 transitions. [2020-01-16 18:40:43,521 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:43,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7064 transitions. [2020-01-16 18:40:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:43,523 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:43,523 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:43,523 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 18:40:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:43,523 INFO L82 PathProgramCache]: Analyzing trace with hash 329362932, now seen corresponding path program 640 times [2020-01-16 18:40:43,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:43,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814464691] [2020-01-16 18:40:43,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:44,129 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:40:44,136 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 18:40:44,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814464691] [2020-01-16 18:40:44,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:44,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:44,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953380525] [2020-01-16 18:40:44,137 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:44,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:44,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:44,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:44,137 INFO L87 Difference]: Start difference. First operand 1585 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:40:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:44,354 INFO L93 Difference]: Finished difference Result 3005 states and 11861 transitions. [2020-01-16 18:40:44,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:44,354 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:44,362 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:40:44,362 INFO L226 Difference]: Without dead ends: 2982 [2020-01-16 18:40:44,362 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 18:40:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2020-01-16 18:40:44,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1579. [2020-01-16 18:40:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:40:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7047 transitions. [2020-01-16 18:40:44,459 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7047 transitions. Word has length 28 [2020-01-16 18:40:44,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:44,459 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7047 transitions. [2020-01-16 18:40:44,459 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7047 transitions. [2020-01-16 18:40:44,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:44,462 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:44,462 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 18:40:44,462 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 18:40:44,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:44,462 INFO L82 PathProgramCache]: Analyzing trace with hash -172267642, now seen corresponding path program 641 times [2020-01-16 18:40:44,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:44,463 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333079845] [2020-01-16 18:40:44,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:44,941 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:45,072 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:40:45,079 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 18:40:45,079 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333079845] [2020-01-16 18:40:45,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:45,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:45,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707973118] [2020-01-16 18:40:45,079 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:45,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:45,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:45,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:45,080 INFO L87 Difference]: Start difference. First operand 1579 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:40:45,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:45,297 INFO L93 Difference]: Finished difference Result 3009 states and 11870 transitions. [2020-01-16 18:40:45,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:45,297 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:45,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:45,305 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:40:45,305 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:40:45,305 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 18:40:45,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:40:45,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1586. [2020-01-16 18:40:45,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:40:45,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7060 transitions. [2020-01-16 18:40:45,371 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7060 transitions. Word has length 28 [2020-01-16 18:40:45,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:45,372 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7060 transitions. [2020-01-16 18:40:45,372 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:45,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7060 transitions. [2020-01-16 18:40:45,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:45,374 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:45,374 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 18:40:45,374 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 18:40:45,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:45,374 INFO L82 PathProgramCache]: Analyzing trace with hash -743722448, now seen corresponding path program 642 times [2020-01-16 18:40:45,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:45,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714233059] [2020-01-16 18:40:45,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:45,851 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:45,978 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:40:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:45,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714233059] [2020-01-16 18:40:45,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:45,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:45,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53197900] [2020-01-16 18:40:45,986 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:45,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:45,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:45,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:45,987 INFO L87 Difference]: Start difference. First operand 1586 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:40:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:46,203 INFO L93 Difference]: Finished difference Result 3008 states and 11861 transitions. [2020-01-16 18:40:46,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:46,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:46,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:46,211 INFO L225 Difference]: With dead ends: 3008 [2020-01-16 18:40:46,212 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:40:46,212 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 18:40:46,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:40:46,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1573. [2020-01-16 18:40:46,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:40:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7030 transitions. [2020-01-16 18:40:46,279 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7030 transitions. Word has length 28 [2020-01-16 18:40:46,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:46,279 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7030 transitions. [2020-01-16 18:40:46,279 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:46,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7030 transitions. [2020-01-16 18:40:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:46,281 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:46,281 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 18:40:46,282 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 18:40:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:46,282 INFO L82 PathProgramCache]: Analyzing trace with hash 701848146, now seen corresponding path program 643 times [2020-01-16 18:40:46,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:46,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969908228] [2020-01-16 18:40:46,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:46,779 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-01-16 18:40:46,907 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:40:46,914 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 18:40:46,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969908228] [2020-01-16 18:40:46,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:46,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:46,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270873093] [2020-01-16 18:40:46,914 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:46,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:46,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:46,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:46,915 INFO L87 Difference]: Start difference. First operand 1573 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:40:47,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:47,154 INFO L93 Difference]: Finished difference Result 3031 states and 11921 transitions. [2020-01-16 18:40:47,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:47,154 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:47,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:47,162 INFO L225 Difference]: With dead ends: 3031 [2020-01-16 18:40:47,162 INFO L226 Difference]: Without dead ends: 3011 [2020-01-16 18:40:47,162 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 18:40:47,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2020-01-16 18:40:47,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 1593. [2020-01-16 18:40:47,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 18:40:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7080 transitions. [2020-01-16 18:40:47,229 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7080 transitions. Word has length 28 [2020-01-16 18:40:47,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:47,230 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7080 transitions. [2020-01-16 18:40:47,230 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:47,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7080 transitions. [2020-01-16 18:40:47,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:47,232 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:47,232 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:47,232 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 18:40:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:47,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1446550644, now seen corresponding path program 644 times [2020-01-16 18:40:47,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:47,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248921566] [2020-01-16 18:40:47,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:47,724 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:47,855 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:40:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:47,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248921566] [2020-01-16 18:40:47,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:47,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:47,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990126346] [2020-01-16 18:40:47,861 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:47,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:47,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:47,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:47,862 INFO L87 Difference]: Start difference. First operand 1593 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:40:48,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:48,088 INFO L93 Difference]: Finished difference Result 3029 states and 11909 transitions. [2020-01-16 18:40:48,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:48,088 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:48,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:48,096 INFO L225 Difference]: With dead ends: 3029 [2020-01-16 18:40:48,096 INFO L226 Difference]: Without dead ends: 3001 [2020-01-16 18:40:48,097 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 18:40:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-01-16 18:40:48,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 1583. [2020-01-16 18:40:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:40:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7054 transitions. [2020-01-16 18:40:48,164 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7054 transitions. Word has length 28 [2020-01-16 18:40:48,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:48,165 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7054 transitions. [2020-01-16 18:40:48,165 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7054 transitions. [2020-01-16 18:40:48,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:48,167 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:48,167 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:48,167 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 18:40:48,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:48,167 INFO L82 PathProgramCache]: Analyzing trace with hash 166618344, now seen corresponding path program 645 times [2020-01-16 18:40:48,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:48,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077203512] [2020-01-16 18:40:48,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:48,666 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:40:48,796 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:48,802 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 18:40:48,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077203512] [2020-01-16 18:40:48,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:48,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:48,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412298201] [2020-01-16 18:40:48,802 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:48,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:48,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:48,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:48,803 INFO L87 Difference]: Start difference. First operand 1583 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:40:48,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:48,990 INFO L93 Difference]: Finished difference Result 3028 states and 11906 transitions. [2020-01-16 18:40:48,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:48,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:48,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:48,998 INFO L225 Difference]: With dead ends: 3028 [2020-01-16 18:40:48,998 INFO L226 Difference]: Without dead ends: 3008 [2020-01-16 18:40:48,998 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 18:40:49,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-01-16 18:40:49,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1591. [2020-01-16 18:40:49,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 18:40:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7068 transitions. [2020-01-16 18:40:49,064 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7068 transitions. Word has length 28 [2020-01-16 18:40:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:49,064 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7068 transitions. [2020-01-16 18:40:49,064 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7068 transitions. [2020-01-16 18:40:49,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:49,066 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:49,066 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 18:40:49,066 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 18:40:49,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:49,067 INFO L82 PathProgramCache]: Analyzing trace with hash 339866036, now seen corresponding path program 646 times [2020-01-16 18:40:49,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:49,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310866249] [2020-01-16 18:40:49,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:49,559 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:40:49,688 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:49,694 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 18:40:49,694 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310866249] [2020-01-16 18:40:49,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:49,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:49,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532345532] [2020-01-16 18:40:49,695 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:49,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:49,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:49,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:49,695 INFO L87 Difference]: Start difference. First operand 1591 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:40:49,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:49,915 INFO L93 Difference]: Finished difference Result 3025 states and 11893 transitions. [2020-01-16 18:40:49,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:49,915 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:49,923 INFO L225 Difference]: With dead ends: 3025 [2020-01-16 18:40:49,923 INFO L226 Difference]: Without dead ends: 3000 [2020-01-16 18:40:49,923 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 18:40:49,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-01-16 18:40:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1583. [2020-01-16 18:40:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:40:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7046 transitions. [2020-01-16 18:40:49,991 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7046 transitions. Word has length 28 [2020-01-16 18:40:49,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:49,991 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7046 transitions. [2020-01-16 18:40:49,991 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:49,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7046 transitions. [2020-01-16 18:40:49,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:49,993 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:49,993 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:49,993 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 18:40:49,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:49,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1772705496, now seen corresponding path program 647 times [2020-01-16 18:40:49,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:49,994 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793582055] [2020-01-16 18:40:49,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:50,486 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:50,615 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:40:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:50,623 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793582055] [2020-01-16 18:40:50,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:50,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:50,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535751428] [2020-01-16 18:40:50,623 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:50,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:50,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:50,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:50,624 INFO L87 Difference]: Start difference. First operand 1583 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:40:50,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:50,812 INFO L93 Difference]: Finished difference Result 3023 states and 11890 transitions. [2020-01-16 18:40:50,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:50,813 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:50,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:50,820 INFO L225 Difference]: With dead ends: 3023 [2020-01-16 18:40:50,821 INFO L226 Difference]: Without dead ends: 3005 [2020-01-16 18:40:50,821 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 18:40:50,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-01-16 18:40:50,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1590. [2020-01-16 18:40:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:40:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7059 transitions. [2020-01-16 18:40:50,887 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7059 transitions. Word has length 28 [2020-01-16 18:40:50,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:50,887 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7059 transitions. [2020-01-16 18:40:50,887 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:50,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7059 transitions. [2020-01-16 18:40:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:50,889 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:50,889 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:50,889 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 18:40:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:50,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1950806994, now seen corresponding path program 648 times [2020-01-16 18:40:50,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:50,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8175701] [2020-01-16 18:40:50,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:51,405 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:40:51,534 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:40:51,540 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 18:40:51,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8175701] [2020-01-16 18:40:51,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:51,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:51,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265699425] [2020-01-16 18:40:51,541 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:51,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:51,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:51,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:51,542 INFO L87 Difference]: Start difference. First operand 1590 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:40:51,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:51,740 INFO L93 Difference]: Finished difference Result 3022 states and 11881 transitions. [2020-01-16 18:40:51,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:51,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:51,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:51,749 INFO L225 Difference]: With dead ends: 3022 [2020-01-16 18:40:51,749 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:40:51,749 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 18:40:51,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:40:51,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1563. [2020-01-16 18:40:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:40:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7004 transitions. [2020-01-16 18:40:51,817 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7004 transitions. Word has length 28 [2020-01-16 18:40:51,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:51,817 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7004 transitions. [2020-01-16 18:40:51,817 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7004 transitions. [2020-01-16 18:40:51,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:51,820 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:51,820 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:51,820 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 18:40:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:51,820 INFO L82 PathProgramCache]: Analyzing trace with hash 325182790, now seen corresponding path program 649 times [2020-01-16 18:40:51,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:51,820 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865227730] [2020-01-16 18:40:51,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:52,407 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:52,413 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 18:40:52,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865227730] [2020-01-16 18:40:52,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:52,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:52,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023797938] [2020-01-16 18:40:52,414 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:52,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:52,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:52,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:52,414 INFO L87 Difference]: Start difference. First operand 1563 states and 7004 transitions. Second operand 11 states. [2020-01-16 18:40:52,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:52,605 INFO L93 Difference]: Finished difference Result 2974 states and 11781 transitions. [2020-01-16 18:40:52,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:52,606 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:52,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:52,613 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:40:52,613 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:40:52,613 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 18:40:52,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:40:52,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1580. [2020-01-16 18:40:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:40:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7058 transitions. [2020-01-16 18:40:52,680 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7058 transitions. Word has length 28 [2020-01-16 18:40:52,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:52,681 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7058 transitions. [2020-01-16 18:40:52,681 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:52,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7058 transitions. [2020-01-16 18:40:52,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:52,683 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:52,683 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:52,683 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 18:40:52,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:52,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1069885288, now seen corresponding path program 650 times [2020-01-16 18:40:52,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:52,684 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972913984] [2020-01-16 18:40:52,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:53,153 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:40:53,280 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:53,287 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 18:40:53,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972913984] [2020-01-16 18:40:53,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:53,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:53,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302356407] [2020-01-16 18:40:53,288 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:53,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:53,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:53,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:53,289 INFO L87 Difference]: Start difference. First operand 1580 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:40:53,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:53,439 INFO L93 Difference]: Finished difference Result 2978 states and 11782 transitions. [2020-01-16 18:40:53,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:53,439 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:53,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:53,446 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:40:53,447 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:40:53,447 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 18:40:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:40:53,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1573. [2020-01-16 18:40:53,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:40:53,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7040 transitions. [2020-01-16 18:40:53,514 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7040 transitions. Word has length 28 [2020-01-16 18:40:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:53,514 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7040 transitions. [2020-01-16 18:40:53,514 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7040 transitions. [2020-01-16 18:40:53,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:53,517 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:53,517 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:53,517 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 18:40:53,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:53,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1820987970, now seen corresponding path program 651 times [2020-01-16 18:40:53,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:53,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182155564] [2020-01-16 18:40:53,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:53,967 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:40:54,093 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:54,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182155564] [2020-01-16 18:40:54,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:54,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:54,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761344074] [2020-01-16 18:40:54,101 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:54,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:54,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:54,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:54,101 INFO L87 Difference]: Start difference. First operand 1573 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:40:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:54,309 INFO L93 Difference]: Finished difference Result 2965 states and 11757 transitions. [2020-01-16 18:40:54,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:54,309 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:54,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:54,317 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:40:54,317 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 18:40:54,317 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 18:40:54,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 18:40:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1577. [2020-01-16 18:40:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:40:54,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7047 transitions. [2020-01-16 18:40:54,385 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7047 transitions. Word has length 28 [2020-01-16 18:40:54,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:54,385 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7047 transitions. [2020-01-16 18:40:54,385 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:54,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7047 transitions. [2020-01-16 18:40:54,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:54,387 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:54,387 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 18:40:54,388 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 18:40:54,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:54,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1902524520, now seen corresponding path program 652 times [2020-01-16 18:40:54,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:54,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570089485] [2020-01-16 18:40:54,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:54,962 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:54,969 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 18:40:54,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570089485] [2020-01-16 18:40:54,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:54,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:54,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318974758] [2020-01-16 18:40:54,969 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:54,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:54,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:54,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:54,970 INFO L87 Difference]: Start difference. First operand 1577 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:40:55,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:55,160 INFO L93 Difference]: Finished difference Result 2963 states and 11749 transitions. [2020-01-16 18:40:55,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:55,160 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:55,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:55,167 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:40:55,167 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:40:55,167 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 18:40:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:40:55,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1573. [2020-01-16 18:40:55,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:40:55,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7036 transitions. [2020-01-16 18:40:55,233 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7036 transitions. Word has length 28 [2020-01-16 18:40:55,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:55,233 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7036 transitions. [2020-01-16 18:40:55,233 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7036 transitions. [2020-01-16 18:40:55,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:55,235 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:55,235 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 18:40:55,235 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 18:40:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:55,236 INFO L82 PathProgramCache]: Analyzing trace with hash 534655486, now seen corresponding path program 653 times [2020-01-16 18:40:55,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:55,236 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332498296] [2020-01-16 18:40:55,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:55,680 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:40:55,806 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:55,813 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 18:40:55,813 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332498296] [2020-01-16 18:40:55,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:55,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:55,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773375684] [2020-01-16 18:40:55,814 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:55,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:55,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:55,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:55,814 INFO L87 Difference]: Start difference. First operand 1573 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:40:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:55,962 INFO L93 Difference]: Finished difference Result 2974 states and 11769 transitions. [2020-01-16 18:40:55,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:55,962 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:55,971 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:40:55,971 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:40:55,971 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 18:40:56,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:40:56,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1578. [2020-01-16 18:40:56,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:40:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7044 transitions. [2020-01-16 18:40:56,039 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7044 transitions. Word has length 28 [2020-01-16 18:40:56,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:56,039 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7044 transitions. [2020-01-16 18:40:56,039 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:56,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7044 transitions. [2020-01-16 18:40:56,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:56,041 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:56,041 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:56,041 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 18:40:56,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:56,041 INFO L82 PathProgramCache]: Analyzing trace with hash -781501818, now seen corresponding path program 654 times [2020-01-16 18:40:56,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:56,042 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674848559] [2020-01-16 18:40:56,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:56,615 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:56,622 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 18:40:56,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674848559] [2020-01-16 18:40:56,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:56,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:56,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295170637] [2020-01-16 18:40:56,622 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:56,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:56,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:56,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:56,623 INFO L87 Difference]: Start difference. First operand 1578 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:40:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:56,812 INFO L93 Difference]: Finished difference Result 2968 states and 11753 transitions. [2020-01-16 18:40:56,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:56,813 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:56,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:56,820 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:40:56,820 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:40:56,820 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 18:40:56,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:40:56,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1568. [2020-01-16 18:40:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:40:56,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7022 transitions. [2020-01-16 18:40:56,888 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7022 transitions. Word has length 28 [2020-01-16 18:40:56,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:56,888 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7022 transitions. [2020-01-16 18:40:56,888 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:56,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7022 transitions. [2020-01-16 18:40:56,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:56,890 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:56,890 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:56,890 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 18:40:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:56,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1419274378, now seen corresponding path program 655 times [2020-01-16 18:40:56,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:56,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088394999] [2020-01-16 18:40:56,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:57,519 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:57,527 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 18:40:57,527 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088394999] [2020-01-16 18:40:57,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:57,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:57,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952937159] [2020-01-16 18:40:57,528 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:57,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:57,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:57,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:57,528 INFO L87 Difference]: Start difference. First operand 1568 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:40:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:57,723 INFO L93 Difference]: Finished difference Result 2984 states and 11805 transitions. [2020-01-16 18:40:57,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:57,724 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:57,731 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:40:57,731 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:40:57,732 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 18:40:57,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:40:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1582. [2020-01-16 18:40:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:40:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7061 transitions. [2020-01-16 18:40:57,798 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7061 transitions. Word has length 28 [2020-01-16 18:40:57,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:57,798 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7061 transitions. [2020-01-16 18:40:57,798 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:57,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7061 transitions. [2020-01-16 18:40:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:57,801 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:57,801 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:57,801 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 18:40:57,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:57,801 INFO L82 PathProgramCache]: Analyzing trace with hash -2130990420, now seen corresponding path program 656 times [2020-01-16 18:40:57,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:57,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672900701] [2020-01-16 18:40:57,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:58,279 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:40:58,409 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:58,415 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 18:40:58,416 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672900701] [2020-01-16 18:40:58,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:58,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:58,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009535179] [2020-01-16 18:40:58,416 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:58,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:58,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:58,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:58,417 INFO L87 Difference]: Start difference. First operand 1582 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:40:58,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:58,571 INFO L93 Difference]: Finished difference Result 2988 states and 11806 transitions. [2020-01-16 18:40:58,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:58,571 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:58,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:58,579 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:40:58,579 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:40:58,579 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 18:40:58,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:40:58,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 18:40:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:40:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7041 transitions. [2020-01-16 18:40:58,647 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7041 transitions. Word has length 28 [2020-01-16 18:40:58,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:58,647 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7041 transitions. [2020-01-16 18:40:58,647 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:58,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7041 transitions. [2020-01-16 18:40:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:58,650 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:58,650 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:40:58,650 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 18:40:58,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:58,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1799981762, now seen corresponding path program 657 times [2020-01-16 18:40:58,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:58,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563519543] [2020-01-16 18:40:58,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:40:59,119 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:40:59,247 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:40:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:40:59,253 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563519543] [2020-01-16 18:40:59,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:40:59,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:40:59,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893697594] [2020-01-16 18:40:59,254 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:40:59,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:40:59,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:40:59,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:40:59,254 INFO L87 Difference]: Start difference. First operand 1575 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:40:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:40:59,449 INFO L93 Difference]: Finished difference Result 2980 states and 11791 transitions. [2020-01-16 18:40:59,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:40:59,450 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:40:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:40:59,457 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:40:59,458 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:40:59,458 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 18:40:59,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:40:59,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1581. [2020-01-16 18:40:59,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:40:59,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7052 transitions. [2020-01-16 18:40:59,524 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7052 transitions. Word has length 28 [2020-01-16 18:40:59,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:40:59,524 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7052 transitions. [2020-01-16 18:40:59,524 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:40:59,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7052 transitions. [2020-01-16 18:40:59,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:40:59,526 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:40:59,526 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 18:40:59,527 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 18:40:59,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:40:59,527 INFO L82 PathProgramCache]: Analyzing trace with hash -882031572, now seen corresponding path program 658 times [2020-01-16 18:40:59,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:40:59,527 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297261964] [2020-01-16 18:40:59,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:40:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:00,127 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:00,134 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297261964] [2020-01-16 18:41:00,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:00,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:00,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850704363] [2020-01-16 18:41:00,135 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:00,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:00,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:00,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:00,135 INFO L87 Difference]: Start difference. First operand 1581 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:41:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:00,332 INFO L93 Difference]: Finished difference Result 2981 states and 11787 transitions. [2020-01-16 18:41:00,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:00,333 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:00,340 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:41:00,340 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:41:00,340 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:41:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:41:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1575. [2020-01-16 18:41:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:41:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7035 transitions. [2020-01-16 18:41:00,406 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7035 transitions. Word has length 28 [2020-01-16 18:41:00,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:00,406 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7035 transitions. [2020-01-16 18:41:00,406 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:00,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7035 transitions. [2020-01-16 18:41:00,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:00,408 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:00,408 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 18:41:00,408 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 18:41:00,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:00,409 INFO L82 PathProgramCache]: Analyzing trace with hash 555661694, now seen corresponding path program 659 times [2020-01-16 18:41:00,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:00,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325189664] [2020-01-16 18:41:00,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:00,882 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:41:01,010 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:01,016 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 18:41:01,017 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325189664] [2020-01-16 18:41:01,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:01,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:01,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943872258] [2020-01-16 18:41:01,017 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:01,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:01,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:01,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:01,017 INFO L87 Difference]: Start difference. First operand 1575 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:41:01,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:01,169 INFO L93 Difference]: Finished difference Result 2990 states and 11804 transitions. [2020-01-16 18:41:01,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:01,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:01,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:01,177 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:41:01,177 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:41:01,177 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 18:41:01,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:41:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1583. [2020-01-16 18:41:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:41:01,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7049 transitions. [2020-01-16 18:41:01,244 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7049 transitions. Word has length 28 [2020-01-16 18:41:01,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:01,244 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7049 transitions. [2020-01-16 18:41:01,244 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:01,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7049 transitions. [2020-01-16 18:41:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:01,247 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:01,247 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:01,247 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 18:41:01,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:01,247 INFO L82 PathProgramCache]: Analyzing trace with hash 728909386, now seen corresponding path program 660 times [2020-01-16 18:41:01,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:01,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089662967] [2020-01-16 18:41:01,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:01,842 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:01,849 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 18:41:01,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089662967] [2020-01-16 18:41:01,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:01,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:01,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875800283] [2020-01-16 18:41:01,849 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:01,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:01,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:01,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:01,850 INFO L87 Difference]: Start difference. First operand 1583 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:41:02,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:02,048 INFO L93 Difference]: Finished difference Result 2987 states and 11791 transitions. [2020-01-16 18:41:02,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:02,049 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:02,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:02,056 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 18:41:02,056 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 18:41:02,056 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 18:41:02,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 18:41:02,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1568. [2020-01-16 18:41:02,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:41:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7017 transitions. [2020-01-16 18:41:02,122 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7017 transitions. Word has length 28 [2020-01-16 18:41:02,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:02,122 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7017 transitions. [2020-01-16 18:41:02,122 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:02,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7017 transitions. [2020-01-16 18:41:02,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:02,124 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:02,124 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:02,124 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 18:41:02,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:02,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1461286794, now seen corresponding path program 661 times [2020-01-16 18:41:02,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:02,125 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077724771] [2020-01-16 18:41:02,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:02,591 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:41:02,718 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:02,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077724771] [2020-01-16 18:41:02,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:02,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:02,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048839617] [2020-01-16 18:41:02,725 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:02,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:02,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:02,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:02,725 INFO L87 Difference]: Start difference. First operand 1568 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:41:02,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:02,921 INFO L93 Difference]: Finished difference Result 2959 states and 11740 transitions. [2020-01-16 18:41:02,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:02,922 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:02,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:02,929 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:41:02,929 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 18:41:02,929 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 18:41:02,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 18:41:02,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1576. [2020-01-16 18:41:02,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:41:02,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7039 transitions. [2020-01-16 18:41:02,996 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7039 transitions. Word has length 28 [2020-01-16 18:41:02,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:02,996 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7039 transitions. [2020-01-16 18:41:02,996 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:02,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7039 transitions. [2020-01-16 18:41:02,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:02,998 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:02,998 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 18:41:02,999 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 18:41:02,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:02,999 INFO L82 PathProgramCache]: Analyzing trace with hash 889831988, now seen corresponding path program 662 times [2020-01-16 18:41:02,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:02,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308679806] [2020-01-16 18:41:02,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:03,467 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:41:03,597 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:03,602 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 18:41:03,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308679806] [2020-01-16 18:41:03,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:03,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:03,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370497528] [2020-01-16 18:41:03,603 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:03,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:03,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:03,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:03,604 INFO L87 Difference]: Start difference. First operand 1576 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:41:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:03,827 INFO L93 Difference]: Finished difference Result 2957 states and 11732 transitions. [2020-01-16 18:41:03,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:03,828 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:03,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:03,836 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 18:41:03,836 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:41:03,836 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 18:41:03,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:41:03,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1572. [2020-01-16 18:41:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:41:03,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7028 transitions. [2020-01-16 18:41:03,924 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7028 transitions. Word has length 28 [2020-01-16 18:41:03,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:03,925 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7028 transitions. [2020-01-16 18:41:03,925 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:03,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7028 transitions. [2020-01-16 18:41:03,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:03,927 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:03,927 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 18:41:03,927 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 18:41:03,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:03,927 INFO L82 PathProgramCache]: Analyzing trace with hash 388201414, now seen corresponding path program 663 times [2020-01-16 18:41:03,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:03,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568049948] [2020-01-16 18:41:03,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:04,516 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:04,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568049948] [2020-01-16 18:41:04,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:04,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:04,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810603235] [2020-01-16 18:41:04,523 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:04,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:04,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:04,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:04,523 INFO L87 Difference]: Start difference. First operand 1572 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:41:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:04,723 INFO L93 Difference]: Finished difference Result 2964 states and 11748 transitions. [2020-01-16 18:41:04,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:04,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:04,731 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:41:04,731 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:41:04,731 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 18:41:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:41:04,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1578. [2020-01-16 18:41:04,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:41:04,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7039 transitions. [2020-01-16 18:41:04,797 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7039 transitions. Word has length 28 [2020-01-16 18:41:04,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:04,797 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7039 transitions. [2020-01-16 18:41:04,798 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:04,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7039 transitions. [2020-01-16 18:41:04,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:04,800 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:04,800 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 18:41:04,800 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 18:41:04,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:04,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1306151604, now seen corresponding path program 664 times [2020-01-16 18:41:04,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:04,800 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105443414] [2020-01-16 18:41:04,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:05,262 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:41:05,387 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:05,393 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 18:41:05,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105443414] [2020-01-16 18:41:05,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:05,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:05,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944475393] [2020-01-16 18:41:05,394 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:05,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:05,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:05,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:05,395 INFO L87 Difference]: Start difference. First operand 1578 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:41:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:05,592 INFO L93 Difference]: Finished difference Result 2965 states and 11744 transitions. [2020-01-16 18:41:05,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:05,593 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:05,600 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:41:05,600 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:41:05,600 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:41:05,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:41:05,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1572. [2020-01-16 18:41:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:41:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7024 transitions. [2020-01-16 18:41:05,666 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7024 transitions. Word has length 28 [2020-01-16 18:41:05,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:05,667 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7024 transitions. [2020-01-16 18:41:05,667 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:05,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7024 transitions. [2020-01-16 18:41:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:05,669 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:05,669 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 18:41:05,669 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 18:41:05,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:05,669 INFO L82 PathProgramCache]: Analyzing trace with hash -718483194, now seen corresponding path program 665 times [2020-01-16 18:41:05,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:05,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579753336] [2020-01-16 18:41:05,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:06,249 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:06,256 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 18:41:06,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579753336] [2020-01-16 18:41:06,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:06,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:06,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454552392] [2020-01-16 18:41:06,257 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:06,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:06,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:06,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:06,257 INFO L87 Difference]: Start difference. First operand 1572 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:41:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:06,455 INFO L93 Difference]: Finished difference Result 2958 states and 11730 transitions. [2020-01-16 18:41:06,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:06,456 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:06,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:06,463 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:41:06,463 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:41:06,463 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 18:41:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:41:06,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1576. [2020-01-16 18:41:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:41:06,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7031 transitions. [2020-01-16 18:41:06,529 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7031 transitions. Word has length 28 [2020-01-16 18:41:06,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:06,529 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7031 transitions. [2020-01-16 18:41:06,529 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:06,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7031 transitions. [2020-01-16 18:41:06,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:06,531 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:06,532 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:06,532 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 18:41:06,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:06,532 INFO L82 PathProgramCache]: Analyzing trace with hash 770921802, now seen corresponding path program 666 times [2020-01-16 18:41:06,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:06,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287619163] [2020-01-16 18:41:06,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:06,992 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:41:07,121 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:07,128 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 18:41:07,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287619163] [2020-01-16 18:41:07,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:07,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:07,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888607153] [2020-01-16 18:41:07,129 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:07,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:07,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:07,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:07,129 INFO L87 Difference]: Start difference. First operand 1576 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:41:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:07,328 INFO L93 Difference]: Finished difference Result 2961 states and 11732 transitions. [2020-01-16 18:41:07,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:07,328 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:07,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:07,335 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:41:07,336 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:41:07,336 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:41:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:41:07,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1568. [2020-01-16 18:41:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:41:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7013 transitions. [2020-01-16 18:41:07,401 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7013 transitions. Word has length 28 [2020-01-16 18:41:07,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:07,401 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7013 transitions. [2020-01-16 18:41:07,401 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:07,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7013 transitions. [2020-01-16 18:41:07,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:07,403 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:07,403 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 18:41:07,403 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 18:41:07,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:07,404 INFO L82 PathProgramCache]: Analyzing trace with hash -2078474900, now seen corresponding path program 667 times [2020-01-16 18:41:07,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:07,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274910621] [2020-01-16 18:41:07,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:07,863 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:41:07,990 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:07,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274910621] [2020-01-16 18:41:07,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:07,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:07,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179670503] [2020-01-16 18:41:07,997 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:07,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:07,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:07,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:07,998 INFO L87 Difference]: Start difference. First operand 1568 states and 7013 transitions. Second operand 11 states. [2020-01-16 18:41:08,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:08,144 INFO L93 Difference]: Finished difference Result 2976 states and 11769 transitions. [2020-01-16 18:41:08,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:08,145 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:08,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:08,152 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:41:08,153 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:41:08,153 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 18:41:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:41:08,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1578. [2020-01-16 18:41:08,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:41:08,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7039 transitions. [2020-01-16 18:41:08,218 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7039 transitions. Word has length 28 [2020-01-16 18:41:08,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:08,218 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7039 transitions. [2020-01-16 18:41:08,219 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:08,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7039 transitions. [2020-01-16 18:41:08,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:08,221 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:08,221 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:08,221 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 18:41:08,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:08,221 INFO L82 PathProgramCache]: Analyzing trace with hash 900335092, now seen corresponding path program 668 times [2020-01-16 18:41:08,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:08,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342591560] [2020-01-16 18:41:08,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:08,669 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:41:08,799 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:08,805 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 18:41:08,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342591560] [2020-01-16 18:41:08,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:08,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:08,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183178958] [2020-01-16 18:41:08,806 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:08,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:08,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:08,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:08,806 INFO L87 Difference]: Start difference. First operand 1578 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:41:08,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:08,991 INFO L93 Difference]: Finished difference Result 2970 states and 11753 transitions. [2020-01-16 18:41:08,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:08,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:08,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:08,999 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:41:08,999 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:41:09,000 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:41:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:41:09,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1573. [2020-01-16 18:41:09,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:41:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7026 transitions. [2020-01-16 18:41:09,065 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7026 transitions. Word has length 28 [2020-01-16 18:41:09,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:09,065 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7026 transitions. [2020-01-16 18:41:09,065 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7026 transitions. [2020-01-16 18:41:09,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:09,068 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:09,068 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 18:41:09,068 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 18:41:09,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:09,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1143407016, now seen corresponding path program 669 times [2020-01-16 18:41:09,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:09,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11067982] [2020-01-16 18:41:09,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:09,543 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:41:09,671 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:09,677 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 18:41:09,677 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11067982] [2020-01-16 18:41:09,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:09,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:09,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112132179] [2020-01-16 18:41:09,677 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:09,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:09,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:09,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:09,678 INFO L87 Difference]: Start difference. First operand 1573 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:41:09,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:09,831 INFO L93 Difference]: Finished difference Result 2982 states and 11779 transitions. [2020-01-16 18:41:09,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:09,832 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:09,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:09,839 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:41:09,839 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:41:09,839 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 18:41:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:41:09,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1581. [2020-01-16 18:41:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:41:09,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7040 transitions. [2020-01-16 18:41:09,906 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7040 transitions. Word has length 28 [2020-01-16 18:41:09,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:09,906 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7040 transitions. [2020-01-16 18:41:09,906 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:09,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7040 transitions. [2020-01-16 18:41:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:09,908 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:09,908 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 18:41:09,908 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 18:41:09,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:09,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1316654708, now seen corresponding path program 670 times [2020-01-16 18:41:09,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:09,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797616118] [2020-01-16 18:41:09,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:10,400 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:41:10,525 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:10,532 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797616118] [2020-01-16 18:41:10,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:10,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:10,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267202137] [2020-01-16 18:41:10,533 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:10,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:10,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:10,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:10,533 INFO L87 Difference]: Start difference. First operand 1581 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:41:10,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:10,722 INFO L93 Difference]: Finished difference Result 2979 states and 11766 transitions. [2020-01-16 18:41:10,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:10,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:10,730 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:41:10,731 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:41:10,731 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 18:41:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:41:10,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1573. [2020-01-16 18:41:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:41:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7021 transitions. [2020-01-16 18:41:10,796 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7021 transitions. Word has length 28 [2020-01-16 18:41:10,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:10,797 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7021 transitions. [2020-01-16 18:41:10,797 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:10,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7021 transitions. [2020-01-16 18:41:10,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:10,799 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:10,799 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 18:41:10,799 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 18:41:10,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:10,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1976046248, now seen corresponding path program 671 times [2020-01-16 18:41:10,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:10,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552768211] [2020-01-16 18:41:10,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:11,394 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:11,400 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 18:41:11,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552768211] [2020-01-16 18:41:11,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:11,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:11,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203103035] [2020-01-16 18:41:11,401 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:11,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:11,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:11,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:11,401 INFO L87 Difference]: Start difference. First operand 1573 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:41:11,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:11,596 INFO L93 Difference]: Finished difference Result 2966 states and 11741 transitions. [2020-01-16 18:41:11,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:11,597 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:11,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:11,604 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:41:11,604 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:41:11,605 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 18:41:11,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:41:11,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1577. [2020-01-16 18:41:11,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:41:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7028 transitions. [2020-01-16 18:41:11,670 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7028 transitions. Word has length 28 [2020-01-16 18:41:11,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:11,671 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7028 transitions. [2020-01-16 18:41:11,671 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:11,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7028 transitions. [2020-01-16 18:41:11,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:11,673 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:11,673 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 18:41:11,673 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 18:41:11,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:11,673 INFO L82 PathProgramCache]: Analyzing trace with hash -829516052, now seen corresponding path program 672 times [2020-01-16 18:41:11,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:11,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403079208] [2020-01-16 18:41:11,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:12,137 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:41:12,267 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:12,274 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 18:41:12,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403079208] [2020-01-16 18:41:12,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:12,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:12,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861546326] [2020-01-16 18:41:12,275 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:12,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:12,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:12,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:12,275 INFO L87 Difference]: Start difference. First operand 1577 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:41:12,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:12,475 INFO L93 Difference]: Finished difference Result 2969 states and 11743 transitions. [2020-01-16 18:41:12,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:12,476 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:12,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:12,483 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 18:41:12,483 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:41:12,484 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 18:41:12,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:41:12,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1563. [2020-01-16 18:41:12,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:41:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 6999 transitions. [2020-01-16 18:41:12,548 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 6999 transitions. Word has length 28 [2020-01-16 18:41:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:12,549 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 6999 transitions. [2020-01-16 18:41:12,549 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:12,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 6999 transitions. [2020-01-16 18:41:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:12,551 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:12,551 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 18:41:12,551 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 18:41:12,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:12,551 INFO L82 PathProgramCache]: Analyzing trace with hash -2033247324, now seen corresponding path program 673 times [2020-01-16 18:41:12,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:12,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480475434] [2020-01-16 18:41:12,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:13,005 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:41:13,132 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:41:13,139 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 18:41:13,139 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480475434] [2020-01-16 18:41:13,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:13,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:13,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010154880] [2020-01-16 18:41:13,139 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:13,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:13,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:13,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:13,140 INFO L87 Difference]: Start difference. First operand 1563 states and 6999 transitions. Second operand 11 states. [2020-01-16 18:41:13,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:13,344 INFO L93 Difference]: Finished difference Result 2957 states and 11739 transitions. [2020-01-16 18:41:13,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:13,344 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:13,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:13,352 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 18:41:13,352 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:41:13,353 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 18:41:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:41:13,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1577. [2020-01-16 18:41:13,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:41:13,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7044 transitions. [2020-01-16 18:41:13,423 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7044 transitions. Word has length 28 [2020-01-16 18:41:13,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:13,423 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7044 transitions. [2020-01-16 18:41:13,423 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:13,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7044 transitions. [2020-01-16 18:41:13,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:13,426 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:13,426 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 18:41:13,426 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 18:41:13,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:13,426 INFO L82 PathProgramCache]: Analyzing trace with hash -543842328, now seen corresponding path program 674 times [2020-01-16 18:41:13,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:13,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529416232] [2020-01-16 18:41:13,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:13,890 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:14,017 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:41:14,024 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 18:41:14,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529416232] [2020-01-16 18:41:14,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:14,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:14,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333507626] [2020-01-16 18:41:14,024 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:14,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:14,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:14,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:14,025 INFO L87 Difference]: Start difference. First operand 1577 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:41:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:14,259 INFO L93 Difference]: Finished difference Result 2959 states and 11737 transitions. [2020-01-16 18:41:14,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:14,259 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:14,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:14,267 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:41:14,267 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:41:14,268 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 18:41:14,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:41:14,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1571. [2020-01-16 18:41:14,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:41:14,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7029 transitions. [2020-01-16 18:41:14,335 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7029 transitions. Word has length 28 [2020-01-16 18:41:14,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:14,335 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7029 transitions. [2020-01-16 18:41:14,335 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:14,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7029 transitions. [2020-01-16 18:41:14,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:14,338 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:14,338 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:14,338 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 18:41:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:14,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1495391746, now seen corresponding path program 675 times [2020-01-16 18:41:14,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:14,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734450486] [2020-01-16 18:41:14,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:14,799 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:41:14,926 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:41:14,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:14,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734450486] [2020-01-16 18:41:14,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:14,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:14,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18453336] [2020-01-16 18:41:14,933 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:14,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:14,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:14,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:14,934 INFO L87 Difference]: Start difference. First operand 1571 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:41:15,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:15,139 INFO L93 Difference]: Finished difference Result 2951 states and 11721 transitions. [2020-01-16 18:41:15,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:15,140 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:15,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:15,147 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:41:15,147 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:41:15,147 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 18:41:15,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:41:15,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1575. [2020-01-16 18:41:15,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:41:15,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7036 transitions. [2020-01-16 18:41:15,213 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7036 transitions. Word has length 28 [2020-01-16 18:41:15,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:15,213 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7036 transitions. [2020-01-16 18:41:15,213 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:15,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7036 transitions. [2020-01-16 18:41:15,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:15,215 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:15,216 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 18:41:15,216 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 18:41:15,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:15,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2066846552, now seen corresponding path program 676 times [2020-01-16 18:41:15,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:15,216 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077358012] [2020-01-16 18:41:15,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:15,673 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:15,801 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:41:15,808 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 18:41:15,808 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077358012] [2020-01-16 18:41:15,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:15,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:15,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432597022] [2020-01-16 18:41:15,809 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:15,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:15,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:15,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:15,809 INFO L87 Difference]: Start difference. First operand 1575 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:41:16,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:16,012 INFO L93 Difference]: Finished difference Result 2949 states and 11713 transitions. [2020-01-16 18:41:16,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:16,012 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:16,019 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 18:41:16,019 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 18:41:16,019 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 18:41:16,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 18:41:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1571. [2020-01-16 18:41:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:41:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7025 transitions. [2020-01-16 18:41:16,084 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7025 transitions. Word has length 28 [2020-01-16 18:41:16,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:16,085 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7025 transitions. [2020-01-16 18:41:16,085 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:16,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7025 transitions. [2020-01-16 18:41:16,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:16,087 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:16,087 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:16,087 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 18:41:16,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:16,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1079072130, now seen corresponding path program 677 times [2020-01-16 18:41:16,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:16,087 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604083481] [2020-01-16 18:41:16,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:16,554 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:16,685 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:41:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:16,693 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604083481] [2020-01-16 18:41:16,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:16,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:16,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547947801] [2020-01-16 18:41:16,693 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:16,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:16,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:16,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:16,694 INFO L87 Difference]: Start difference. First operand 1571 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:41:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:16,913 INFO L93 Difference]: Finished difference Result 2955 states and 11725 transitions. [2020-01-16 18:41:16,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:16,913 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:16,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:16,920 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:41:16,920 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:41:16,920 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 18:41:16,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:41:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1575. [2020-01-16 18:41:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:41:16,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7032 transitions. [2020-01-16 18:41:16,987 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7032 transitions. Word has length 28 [2020-01-16 18:41:16,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:16,987 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7032 transitions. [2020-01-16 18:41:16,987 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7032 transitions. [2020-01-16 18:41:16,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:16,989 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:16,989 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 18:41:16,989 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 18:41:16,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:16,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1155035364, now seen corresponding path program 678 times [2020-01-16 18:41:16,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:16,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531964951] [2020-01-16 18:41:16,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:17,451 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:17,579 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:41:17,586 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 18:41:17,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531964951] [2020-01-16 18:41:17,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:17,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:17,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243222115] [2020-01-16 18:41:17,587 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:17,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:17,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:17,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:17,587 INFO L87 Difference]: Start difference. First operand 1575 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:41:17,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:17,820 INFO L93 Difference]: Finished difference Result 2951 states and 11713 transitions. [2020-01-16 18:41:17,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:17,820 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:17,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:17,827 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:41:17,828 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 18:41:17,828 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 18:41:17,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 18:41:17,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1567. [2020-01-16 18:41:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:41:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7014 transitions. [2020-01-16 18:41:17,893 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7014 transitions. Word has length 28 [2020-01-16 18:41:17,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:17,894 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7014 transitions. [2020-01-16 18:41:17,894 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:17,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7014 transitions. [2020-01-16 18:41:17,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:17,896 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:17,896 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 18:41:17,896 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 18:41:17,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:17,896 INFO L82 PathProgramCache]: Analyzing trace with hash -939155736, now seen corresponding path program 679 times [2020-01-16 18:41:17,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:17,896 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945870195] [2020-01-16 18:41:17,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:18,493 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:41:18,500 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 18:41:18,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945870195] [2020-01-16 18:41:18,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:18,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:18,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428660407] [2020-01-16 18:41:18,500 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:18,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:18,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:18,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:18,501 INFO L87 Difference]: Start difference. First operand 1567 states and 7014 transitions. Second operand 11 states. [2020-01-16 18:41:18,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:18,720 INFO L93 Difference]: Finished difference Result 2967 states and 11764 transitions. [2020-01-16 18:41:18,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:18,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:18,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:18,727 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:41:18,727 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:41:18,727 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 18:41:18,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:41:18,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1579. [2020-01-16 18:41:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:41:18,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7048 transitions. [2020-01-16 18:41:18,793 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7048 transitions. Word has length 28 [2020-01-16 18:41:18,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:18,793 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7048 transitions. [2020-01-16 18:41:18,793 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:18,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7048 transitions. [2020-01-16 18:41:18,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:18,796 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:18,796 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 18:41:18,796 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 18:41:18,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:18,796 INFO L82 PathProgramCache]: Analyzing trace with hash 550249260, now seen corresponding path program 680 times [2020-01-16 18:41:18,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:18,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701670164] [2020-01-16 18:41:18,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:19,263 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:19,391 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:41:19,397 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 18:41:19,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701670164] [2020-01-16 18:41:19,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:19,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:19,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646820761] [2020-01-16 18:41:19,398 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:19,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:19,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:19,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:19,398 INFO L87 Difference]: Start difference. First operand 1579 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:41:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:19,665 INFO L93 Difference]: Finished difference Result 2969 states and 11762 transitions. [2020-01-16 18:41:19,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:19,665 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:19,673 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 18:41:19,673 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:41:19,673 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 18:41:19,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:41:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1573. [2020-01-16 18:41:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:41:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7031 transitions. [2020-01-16 18:41:19,739 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7031 transitions. Word has length 28 [2020-01-16 18:41:19,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:19,739 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7031 transitions. [2020-01-16 18:41:19,739 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:19,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7031 transitions. [2020-01-16 18:41:19,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:19,741 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:19,741 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 18:41:19,742 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 18:41:19,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:19,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1474385538, now seen corresponding path program 681 times [2020-01-16 18:41:19,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:19,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594141894] [2020-01-16 18:41:19,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:20,346 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:20,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594141894] [2020-01-16 18:41:20,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:20,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:20,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893625220] [2020-01-16 18:41:20,354 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:20,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:20,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:20,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:20,355 INFO L87 Difference]: Start difference. First operand 1573 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:41:20,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:20,617 INFO L93 Difference]: Finished difference Result 2966 states and 11756 transitions. [2020-01-16 18:41:20,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:20,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:20,626 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:41:20,626 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:41:20,626 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 18:41:20,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:41:20,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1579. [2020-01-16 18:41:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:41:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7042 transitions. [2020-01-16 18:41:20,692 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7042 transitions. Word has length 28 [2020-01-16 18:41:20,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:20,692 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7042 transitions. [2020-01-16 18:41:20,692 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:20,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7042 transitions. [2020-01-16 18:41:20,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:20,695 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:20,695 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 18:41:20,695 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 18:41:20,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:20,695 INFO L82 PathProgramCache]: Analyzing trace with hash -556435348, now seen corresponding path program 682 times [2020-01-16 18:41:20,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:20,695 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251387455] [2020-01-16 18:41:20,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:21,301 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:21,307 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 18:41:21,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251387455] [2020-01-16 18:41:21,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:21,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:21,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494952773] [2020-01-16 18:41:21,307 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:21,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:21,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:21,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:21,308 INFO L87 Difference]: Start difference. First operand 1579 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:41:21,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:21,523 INFO L93 Difference]: Finished difference Result 2967 states and 11752 transitions. [2020-01-16 18:41:21,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:21,524 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:21,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:21,531 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:41:21,531 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:41:21,531 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 18:41:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:41:21,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1573. [2020-01-16 18:41:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:41:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7025 transitions. [2020-01-16 18:41:21,597 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7025 transitions. Word has length 28 [2020-01-16 18:41:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:21,597 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7025 transitions. [2020-01-16 18:41:21,597 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:21,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7025 transitions. [2020-01-16 18:41:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:21,600 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:21,600 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:21,600 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 18:41:21,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:21,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1058065922, now seen corresponding path program 683 times [2020-01-16 18:41:21,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:21,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682667089] [2020-01-16 18:41:21,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:22,080 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:22,206 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:41:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:22,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682667089] [2020-01-16 18:41:22,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:22,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:22,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123204974] [2020-01-16 18:41:22,214 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:22,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:22,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:22,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:22,214 INFO L87 Difference]: Start difference. First operand 1573 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:41:22,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:22,420 INFO L93 Difference]: Finished difference Result 2971 states and 11761 transitions. [2020-01-16 18:41:22,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:22,421 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:22,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:22,428 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 18:41:22,429 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:41:22,429 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 18:41:22,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:41:22,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1580. [2020-01-16 18:41:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:41:22,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7038 transitions. [2020-01-16 18:41:22,495 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7038 transitions. Word has length 28 [2020-01-16 18:41:22,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:22,495 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7038 transitions. [2020-01-16 18:41:22,495 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:22,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7038 transitions. [2020-01-16 18:41:22,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:22,498 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:22,498 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 18:41:22,498 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 18:41:22,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:22,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1629520728, now seen corresponding path program 684 times [2020-01-16 18:41:22,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:22,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096345237] [2020-01-16 18:41:22,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:23,104 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:23,111 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 18:41:23,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096345237] [2020-01-16 18:41:23,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:23,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:23,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99041697] [2020-01-16 18:41:23,111 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:23,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:23,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:23,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:23,112 INFO L87 Difference]: Start difference. First operand 1580 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:41:23,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:23,324 INFO L93 Difference]: Finished difference Result 2970 states and 11752 transitions. [2020-01-16 18:41:23,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:23,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:23,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:23,332 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:41:23,332 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:41:23,332 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 18:41:23,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:41:23,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1567. [2020-01-16 18:41:23,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:41:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7010 transitions. [2020-01-16 18:41:23,402 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7010 transitions. Word has length 28 [2020-01-16 18:41:23,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:23,402 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7010 transitions. [2020-01-16 18:41:23,402 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:23,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7010 transitions. [2020-01-16 18:41:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:23,405 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:23,405 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 18:41:23,405 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 18:41:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:23,405 INFO L82 PathProgramCache]: Analyzing trace with hash -907646424, now seen corresponding path program 685 times [2020-01-16 18:41:23,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:23,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525775344] [2020-01-16 18:41:23,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:23,898 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:41:24,025 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:24,032 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 18:41:24,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525775344] [2020-01-16 18:41:24,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:24,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:24,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028873697] [2020-01-16 18:41:24,033 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:24,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:24,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:24,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:24,033 INFO L87 Difference]: Start difference. First operand 1567 states and 7010 transitions. Second operand 11 states. [2020-01-16 18:41:24,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:24,235 INFO L93 Difference]: Finished difference Result 2950 states and 11715 transitions. [2020-01-16 18:41:24,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:24,235 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:24,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:24,243 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:41:24,243 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:41:24,243 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 18:41:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:41:24,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1575. [2020-01-16 18:41:24,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:41:24,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7032 transitions. [2020-01-16 18:41:24,312 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7032 transitions. Word has length 28 [2020-01-16 18:41:24,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:24,312 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7032 transitions. [2020-01-16 18:41:24,312 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:24,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7032 transitions. [2020-01-16 18:41:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:24,315 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:24,315 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 18:41:24,315 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 18:41:24,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:24,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1479101230, now seen corresponding path program 686 times [2020-01-16 18:41:24,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:24,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172022199] [2020-01-16 18:41:24,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:24,903 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:24,910 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 18:41:24,910 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172022199] [2020-01-16 18:41:24,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:24,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:24,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649619068] [2020-01-16 18:41:24,911 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:24,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:24,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:24,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:24,911 INFO L87 Difference]: Start difference. First operand 1575 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:41:25,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:25,119 INFO L93 Difference]: Finished difference Result 2948 states and 11707 transitions. [2020-01-16 18:41:25,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:25,120 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:25,127 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:41:25,128 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:41:25,128 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 18:41:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:41:25,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1571. [2020-01-16 18:41:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:41:25,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7021 transitions. [2020-01-16 18:41:25,193 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7021 transitions. Word has length 28 [2020-01-16 18:41:25,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:25,193 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7021 transitions. [2020-01-16 18:41:25,193 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7021 transitions. [2020-01-16 18:41:25,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:25,196 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:25,196 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 18:41:25,196 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 18:41:25,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:25,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1980731804, now seen corresponding path program 687 times [2020-01-16 18:41:25,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:25,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693026130] [2020-01-16 18:41:25,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:25,794 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:25,800 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 18:41:25,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693026130] [2020-01-16 18:41:25,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:25,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:25,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683457486] [2020-01-16 18:41:25,801 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:25,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:25,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:25,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:25,801 INFO L87 Difference]: Start difference. First operand 1571 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:41:26,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:26,033 INFO L93 Difference]: Finished difference Result 2955 states and 11723 transitions. [2020-01-16 18:41:26,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:26,033 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:26,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:26,040 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:41:26,041 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:41:26,041 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 18:41:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:41:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1577. [2020-01-16 18:41:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:41:26,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7032 transitions. [2020-01-16 18:41:26,108 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7032 transitions. Word has length 28 [2020-01-16 18:41:26,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:26,109 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7032 transitions. [2020-01-16 18:41:26,109 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:26,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7032 transitions. [2020-01-16 18:41:26,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:26,111 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:26,111 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 18:41:26,111 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 18:41:26,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:26,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1062781614, now seen corresponding path program 688 times [2020-01-16 18:41:26,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:26,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067632622] [2020-01-16 18:41:26,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:26,718 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:26,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067632622] [2020-01-16 18:41:26,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:26,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:26,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629330573] [2020-01-16 18:41:26,726 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:26,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:26,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:26,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:26,726 INFO L87 Difference]: Start difference. First operand 1577 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:41:26,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:26,940 INFO L93 Difference]: Finished difference Result 2956 states and 11719 transitions. [2020-01-16 18:41:26,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:26,941 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:26,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:26,948 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:41:26,948 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:41:26,948 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 18:41:26,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:41:27,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1571. [2020-01-16 18:41:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:41:27,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7017 transitions. [2020-01-16 18:41:27,015 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7017 transitions. Word has length 28 [2020-01-16 18:41:27,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:27,015 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7017 transitions. [2020-01-16 18:41:27,015 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:27,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7017 transitions. [2020-01-16 18:41:27,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:27,018 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:27,018 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 18:41:27,018 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 18:41:27,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:27,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1207550884, now seen corresponding path program 689 times [2020-01-16 18:41:27,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:27,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37364020] [2020-01-16 18:41:27,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:27,613 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:27,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:27,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37364020] [2020-01-16 18:41:27,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:27,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:27,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715289759] [2020-01-16 18:41:27,621 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:27,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:27,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:27,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:27,621 INFO L87 Difference]: Start difference. First operand 1571 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:41:27,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:27,819 INFO L93 Difference]: Finished difference Result 2949 states and 11705 transitions. [2020-01-16 18:41:27,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:27,820 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:27,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:27,827 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 18:41:27,827 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:41:27,828 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 18:41:27,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:41:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1575. [2020-01-16 18:41:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:41:27,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7024 transitions. [2020-01-16 18:41:27,895 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7024 transitions. Word has length 28 [2020-01-16 18:41:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:27,895 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7024 transitions. [2020-01-16 18:41:27,895 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:27,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7024 transitions. [2020-01-16 18:41:27,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:27,898 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:27,898 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 18:41:27,898 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 18:41:27,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:27,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1598011416, now seen corresponding path program 690 times [2020-01-16 18:41:27,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:27,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599101803] [2020-01-16 18:41:27,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:28,376 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:28,505 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:28,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599101803] [2020-01-16 18:41:28,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:28,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:28,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097171413] [2020-01-16 18:41:28,512 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:28,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:28,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:28,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:28,513 INFO L87 Difference]: Start difference. First operand 1575 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:41:28,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:28,714 INFO L93 Difference]: Finished difference Result 2952 states and 11707 transitions. [2020-01-16 18:41:28,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:28,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:28,722 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:41:28,723 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 18:41:28,723 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 18:41:28,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 18:41:28,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1567. [2020-01-16 18:41:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:41:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7006 transitions. [2020-01-16 18:41:28,788 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7006 transitions. Word has length 28 [2020-01-16 18:41:28,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:28,788 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7006 transitions. [2020-01-16 18:41:28,788 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:28,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7006 transitions. [2020-01-16 18:41:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:28,790 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:28,790 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:28,790 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 18:41:28,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:28,791 INFO L82 PathProgramCache]: Analyzing trace with hash 602764780, now seen corresponding path program 691 times [2020-01-16 18:41:28,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:28,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362479296] [2020-01-16 18:41:28,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:29,382 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:41:29,390 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 18:41:29,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362479296] [2020-01-16 18:41:29,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:29,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:29,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964493286] [2020-01-16 18:41:29,390 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:29,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:29,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:29,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:29,391 INFO L87 Difference]: Start difference. First operand 1567 states and 7006 transitions. Second operand 11 states. [2020-01-16 18:41:29,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:29,609 INFO L93 Difference]: Finished difference Result 2957 states and 11726 transitions. [2020-01-16 18:41:29,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:29,610 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:29,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:29,617 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 18:41:29,617 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:41:29,618 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 18:41:29,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:41:29,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1575. [2020-01-16 18:41:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:41:29,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7028 transitions. [2020-01-16 18:41:29,683 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7028 transitions. Word has length 28 [2020-01-16 18:41:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:29,683 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7028 transitions. [2020-01-16 18:41:29,684 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7028 transitions. [2020-01-16 18:41:29,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:29,686 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:29,686 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 18:41:29,686 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 18:41:29,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:29,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1458095022, now seen corresponding path program 692 times [2020-01-16 18:41:29,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:29,686 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138430655] [2020-01-16 18:41:29,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:30,297 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:41:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:30,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138430655] [2020-01-16 18:41:30,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:30,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:30,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804968236] [2020-01-16 18:41:30,305 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:30,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:30,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:30,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:30,306 INFO L87 Difference]: Start difference. First operand 1575 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:41:30,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:30,486 INFO L93 Difference]: Finished difference Result 2953 states and 11714 transitions. [2020-01-16 18:41:30,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:30,487 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:30,494 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:41:30,494 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:41:30,495 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 18:41:30,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:41:30,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1571. [2020-01-16 18:41:30,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:41:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7017 transitions. [2020-01-16 18:41:30,562 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7017 transitions. Word has length 28 [2020-01-16 18:41:30,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:30,562 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7017 transitions. [2020-01-16 18:41:30,562 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7017 transitions. [2020-01-16 18:41:30,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:30,564 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:30,564 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 18:41:30,564 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 18:41:30,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:30,564 INFO L82 PathProgramCache]: Analyzing trace with hash -470320600, now seen corresponding path program 693 times [2020-01-16 18:41:30,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:30,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136471181] [2020-01-16 18:41:30,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:31,029 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:31,158 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:41:31,165 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 18:41:31,165 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136471181] [2020-01-16 18:41:31,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:31,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:31,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017544677] [2020-01-16 18:41:31,165 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:31,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:31,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:31,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:31,166 INFO L87 Difference]: Start difference. First operand 1571 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:41:31,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:31,380 INFO L93 Difference]: Finished difference Result 2963 states and 11737 transitions. [2020-01-16 18:41:31,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:31,381 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:31,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:31,388 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:41:31,388 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:41:31,389 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 18:41:31,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:41:31,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1578. [2020-01-16 18:41:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:41:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7030 transitions. [2020-01-16 18:41:31,454 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7030 transitions. Word has length 28 [2020-01-16 18:41:31,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:31,454 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7030 transitions. [2020-01-16 18:41:31,454 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7030 transitions. [2020-01-16 18:41:31,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:31,457 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:31,457 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:31,457 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 18:41:31,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:31,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1041775406, now seen corresponding path program 694 times [2020-01-16 18:41:31,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:31,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58961424] [2020-01-16 18:41:31,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:32,050 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:32,057 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58961424] [2020-01-16 18:41:32,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:32,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:32,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306442975] [2020-01-16 18:41:32,057 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:32,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:32,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:32,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:32,057 INFO L87 Difference]: Start difference. First operand 1578 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:41:32,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:32,253 INFO L93 Difference]: Finished difference Result 2962 states and 11728 transitions. [2020-01-16 18:41:32,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:32,254 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:32,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:32,261 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:41:32,261 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:41:32,261 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 18:41:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:41:32,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1571. [2020-01-16 18:41:32,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:41:32,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7013 transitions. [2020-01-16 18:41:32,327 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7013 transitions. Word has length 28 [2020-01-16 18:41:32,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:32,327 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7013 transitions. [2020-01-16 18:41:32,327 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:32,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7013 transitions. [2020-01-16 18:41:32,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:32,330 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:32,330 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:32,331 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 18:41:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:32,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1993324824, now seen corresponding path program 695 times [2020-01-16 18:41:32,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:32,331 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878388032] [2020-01-16 18:41:32,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:32,914 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:32,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878388032] [2020-01-16 18:41:32,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:32,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:32,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075662068] [2020-01-16 18:41:32,922 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:32,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:32,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:32,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:32,922 INFO L87 Difference]: Start difference. First operand 1571 states and 7013 transitions. Second operand 11 states. [2020-01-16 18:41:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:33,117 INFO L93 Difference]: Finished difference Result 2952 states and 11708 transitions. [2020-01-16 18:41:33,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:33,118 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:33,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:33,125 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:41:33,125 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:41:33,126 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 18:41:33,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:41:33,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1575. [2020-01-16 18:41:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:41:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7020 transitions. [2020-01-16 18:41:33,191 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7020 transitions. Word has length 28 [2020-01-16 18:41:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:33,192 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7020 transitions. [2020-01-16 18:41:33,192 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7020 transitions. [2020-01-16 18:41:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:33,194 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:33,194 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:33,194 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 18:41:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:33,194 INFO L82 PathProgramCache]: Analyzing trace with hash -503919828, now seen corresponding path program 696 times [2020-01-16 18:41:33,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:33,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312118065] [2020-01-16 18:41:33,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:33,662 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:33,786 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:33,793 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 18:41:33,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312118065] [2020-01-16 18:41:33,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:33,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:33,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634666540] [2020-01-16 18:41:33,794 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:33,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:33,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:33,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:33,794 INFO L87 Difference]: Start difference. First operand 1575 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:41:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:34,016 INFO L93 Difference]: Finished difference Result 2955 states and 11710 transitions. [2020-01-16 18:41:34,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:34,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:34,024 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:41:34,024 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:41:34,024 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 18:41:34,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:41:34,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1563. [2020-01-16 18:41:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:41:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 6995 transitions. [2020-01-16 18:41:34,091 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 6995 transitions. Word has length 28 [2020-01-16 18:41:34,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:34,091 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 6995 transitions. [2020-01-16 18:41:34,091 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:34,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 6995 transitions. [2020-01-16 18:41:34,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:34,093 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:34,094 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:34,094 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 18:41:34,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:34,094 INFO L82 PathProgramCache]: Analyzing trace with hash 647992356, now seen corresponding path program 697 times [2020-01-16 18:41:34,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:34,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538912147] [2020-01-16 18:41:34,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:34,585 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-01-16 18:41:34,714 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:34,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538912147] [2020-01-16 18:41:34,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:34,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:34,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594983348] [2020-01-16 18:41:34,721 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:34,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:34,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:34,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:34,721 INFO L87 Difference]: Start difference. First operand 1563 states and 6995 transitions. Second operand 11 states. [2020-01-16 18:41:34,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:34,881 INFO L93 Difference]: Finished difference Result 3001 states and 11831 transitions. [2020-01-16 18:41:34,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:34,882 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:34,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:34,889 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:41:34,889 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:41:34,889 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 18:41:34,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:41:34,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1586. [2020-01-16 18:41:34,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:41:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7060 transitions. [2020-01-16 18:41:34,957 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7060 transitions. Word has length 28 [2020-01-16 18:41:34,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:34,958 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7060 transitions. [2020-01-16 18:41:34,958 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7060 transitions. [2020-01-16 18:41:34,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:34,960 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:34,960 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 18:41:34,960 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 18:41:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:34,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1392694854, now seen corresponding path program 698 times [2020-01-16 18:41:34,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:34,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610268213] [2020-01-16 18:41:34,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:35,444 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:35,573 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:41:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:35,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610268213] [2020-01-16 18:41:35,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:35,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:35,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356689116] [2020-01-16 18:41:35,579 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:35,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:35,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:35,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:35,580 INFO L87 Difference]: Start difference. First operand 1586 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:41:35,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:35,772 INFO L93 Difference]: Finished difference Result 2999 states and 11819 transitions. [2020-01-16 18:41:35,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:35,772 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:35,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:35,779 INFO L225 Difference]: With dead ends: 2999 [2020-01-16 18:41:35,779 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 18:41:35,779 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 18:41:35,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 18:41:35,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1576. [2020-01-16 18:41:35,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:41:35,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7037 transitions. [2020-01-16 18:41:35,845 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7037 transitions. Word has length 28 [2020-01-16 18:41:35,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:35,845 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7037 transitions. [2020-01-16 18:41:35,845 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:35,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7037 transitions. [2020-01-16 18:41:35,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:35,848 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:35,848 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 18:41:35,848 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 18:41:35,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:35,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1185847934, now seen corresponding path program 699 times [2020-01-16 18:41:35,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:35,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082536439] [2020-01-16 18:41:35,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:36,329 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-01-16 18:41:36,460 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:36,467 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 18:41:36,467 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082536439] [2020-01-16 18:41:36,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:36,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:36,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793968083] [2020-01-16 18:41:36,468 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:36,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:36,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:36,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:36,468 INFO L87 Difference]: Start difference. First operand 1576 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:41:36,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:36,625 INFO L93 Difference]: Finished difference Result 2992 states and 11804 transitions. [2020-01-16 18:41:36,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:36,625 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:36,632 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:41:36,632 INFO L226 Difference]: Without dead ends: 2972 [2020-01-16 18:41:36,632 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 18:41:36,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-01-16 18:41:36,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1581. [2020-01-16 18:41:36,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:41:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7045 transitions. [2020-01-16 18:41:36,721 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7045 transitions. Word has length 28 [2020-01-16 18:41:36,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:36,721 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7045 transitions. [2020-01-16 18:41:36,721 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:36,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7045 transitions. [2020-01-16 18:41:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:36,723 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:36,723 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 18:41:36,723 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 18:41:36,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:36,724 INFO L82 PathProgramCache]: Analyzing trace with hash -130309370, now seen corresponding path program 700 times [2020-01-16 18:41:36,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:36,724 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822466322] [2020-01-16 18:41:36,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:37,188 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:41:37,318 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:37,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822466322] [2020-01-16 18:41:37,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:37,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:37,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505703900] [2020-01-16 18:41:37,324 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:37,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:37,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:37,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:37,325 INFO L87 Difference]: Start difference. First operand 1581 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:41:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:37,564 INFO L93 Difference]: Finished difference Result 2986 states and 11788 transitions. [2020-01-16 18:41:37,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:37,565 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:37,572 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:41:37,573 INFO L226 Difference]: Without dead ends: 2967 [2020-01-16 18:41:37,573 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:41:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-01-16 18:41:37,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1576. [2020-01-16 18:41:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:41:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7032 transitions. [2020-01-16 18:41:37,638 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7032 transitions. Word has length 28 [2020-01-16 18:41:37,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:37,638 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7032 transitions. [2020-01-16 18:41:37,638 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7032 transitions. [2020-01-16 18:41:37,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:37,641 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:37,641 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 18:41:37,641 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 18:41:37,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:37,641 INFO L82 PathProgramCache]: Analyzing trace with hash -753475906, now seen corresponding path program 701 times [2020-01-16 18:41:37,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:37,641 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983023845] [2020-01-16 18:41:37,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:38,232 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:41:38,239 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 18:41:38,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983023845] [2020-01-16 18:41:38,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:38,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:38,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354305737] [2020-01-16 18:41:38,239 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:38,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:38,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:38,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:38,240 INFO L87 Difference]: Start difference. First operand 1576 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:41:38,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:38,435 INFO L93 Difference]: Finished difference Result 2987 states and 11791 transitions. [2020-01-16 18:41:38,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:38,436 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:38,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:38,443 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 18:41:38,443 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 18:41:38,443 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 18:41:38,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 18:41:38,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1580. [2020-01-16 18:41:38,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:41:38,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7039 transitions. [2020-01-16 18:41:38,510 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7039 transitions. Word has length 28 [2020-01-16 18:41:38,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:38,511 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7039 transitions. [2020-01-16 18:41:38,511 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7039 transitions. [2020-01-16 18:41:38,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:38,513 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:38,513 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 18:41:38,513 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 18:41:38,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:38,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1480631588, now seen corresponding path program 702 times [2020-01-16 18:41:38,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:38,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671091152] [2020-01-16 18:41:38,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:38,978 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-01-16 18:41:39,107 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:41:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:39,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671091152] [2020-01-16 18:41:39,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:39,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:39,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135632114] [2020-01-16 18:41:39,115 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:39,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:39,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:39,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:39,115 INFO L87 Difference]: Start difference. First operand 1580 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:41:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:39,311 INFO L93 Difference]: Finished difference Result 2983 states and 11779 transitions. [2020-01-16 18:41:39,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:39,312 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:39,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:39,319 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:41:39,319 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:41:39,319 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:41:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:41:39,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1570. [2020-01-16 18:41:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:41:39,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7017 transitions. [2020-01-16 18:41:39,385 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7017 transitions. Word has length 28 [2020-01-16 18:41:39,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:39,385 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7017 transitions. [2020-01-16 18:41:39,385 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:39,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7017 transitions. [2020-01-16 18:41:39,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:39,388 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:39,388 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 18:41:39,388 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 18:41:39,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:39,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1742083944, now seen corresponding path program 703 times [2020-01-16 18:41:39,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:39,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209350050] [2020-01-16 18:41:39,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:39,895 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-01-16 18:41:40,023 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:40,029 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 18:41:40,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209350050] [2020-01-16 18:41:40,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:40,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:40,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756387753] [2020-01-16 18:41:40,030 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:40,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:40,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:40,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:40,030 INFO L87 Difference]: Start difference. First operand 1570 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:41:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:40,213 INFO L93 Difference]: Finished difference Result 3014 states and 11862 transitions. [2020-01-16 18:41:40,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:40,213 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:40,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:40,220 INFO L225 Difference]: With dead ends: 3014 [2020-01-16 18:41:40,220 INFO L226 Difference]: Without dead ends: 2994 [2020-01-16 18:41:40,220 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 18:41:40,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-01-16 18:41:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1590. [2020-01-16 18:41:40,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:41:40,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7067 transitions. [2020-01-16 18:41:40,287 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7067 transitions. Word has length 28 [2020-01-16 18:41:40,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:40,287 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7067 transitions. [2020-01-16 18:41:40,287 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:40,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7067 transitions. [2020-01-16 18:41:40,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:40,289 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:40,289 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:40,289 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 18:41:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:40,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1808180854, now seen corresponding path program 704 times [2020-01-16 18:41:40,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:40,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905627958] [2020-01-16 18:41:40,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:40,772 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:40,899 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:41:40,906 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 18:41:40,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905627958] [2020-01-16 18:41:40,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:40,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:40,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320405734] [2020-01-16 18:41:40,906 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:40,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:40,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:40,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:40,907 INFO L87 Difference]: Start difference. First operand 1590 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:41:41,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:41,143 INFO L93 Difference]: Finished difference Result 3012 states and 11850 transitions. [2020-01-16 18:41:41,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:41,143 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:41,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:41,150 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:41:41,151 INFO L226 Difference]: Without dead ends: 2984 [2020-01-16 18:41:41,151 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 18:41:41,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-01-16 18:41:41,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1580. [2020-01-16 18:41:41,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:41:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7041 transitions. [2020-01-16 18:41:41,219 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7041 transitions. Word has length 28 [2020-01-16 18:41:41,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:41,219 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7041 transitions. [2020-01-16 18:41:41,219 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:41,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7041 transitions. [2020-01-16 18:41:41,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:41,221 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:41,221 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:41,221 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 18:41:41,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:41,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1206854142, now seen corresponding path program 705 times [2020-01-16 18:41:41,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:41,222 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856638473] [2020-01-16 18:41:41,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:41,708 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:41:41,839 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:41,846 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856638473] [2020-01-16 18:41:41,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:41,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:41,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742370066] [2020-01-16 18:41:41,846 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:41,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:41,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:41,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:41,847 INFO L87 Difference]: Start difference. First operand 1580 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:41:42,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:42,003 INFO L93 Difference]: Finished difference Result 3011 states and 11847 transitions. [2020-01-16 18:41:42,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:42,003 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:42,011 INFO L225 Difference]: With dead ends: 3011 [2020-01-16 18:41:42,011 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:41:42,011 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 18:41:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:41:42,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1588. [2020-01-16 18:41:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:41:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7055 transitions. [2020-01-16 18:41:42,079 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7055 transitions. Word has length 28 [2020-01-16 18:41:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:42,079 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7055 transitions. [2020-01-16 18:41:42,079 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7055 transitions. [2020-01-16 18:41:42,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:42,081 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:42,081 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 18:41:42,082 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 18:41:42,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:42,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1380101834, now seen corresponding path program 706 times [2020-01-16 18:41:42,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:42,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272715868] [2020-01-16 18:41:42,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:42,685 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:42,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272715868] [2020-01-16 18:41:42,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:42,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:42,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039141519] [2020-01-16 18:41:42,692 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:42,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:42,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:42,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:42,692 INFO L87 Difference]: Start difference. First operand 1588 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:41:42,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:42,915 INFO L93 Difference]: Finished difference Result 3008 states and 11834 transitions. [2020-01-16 18:41:42,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:42,915 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:42,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:42,922 INFO L225 Difference]: With dead ends: 3008 [2020-01-16 18:41:42,923 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:41:42,923 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 18:41:42,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:41:42,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1580. [2020-01-16 18:41:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:41:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7033 transitions. [2020-01-16 18:41:42,989 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7033 transitions. Word has length 28 [2020-01-16 18:41:42,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:42,989 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7033 transitions. [2020-01-16 18:41:42,989 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:42,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7033 transitions. [2020-01-16 18:41:42,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:42,991 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:42,992 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 18:41:42,992 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 18:41:42,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:42,992 INFO L82 PathProgramCache]: Analyzing trace with hash -732469698, now seen corresponding path program 707 times [2020-01-16 18:41:42,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:42,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682434106] [2020-01-16 18:41:42,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:43,375 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2020-01-16 18:41:43,497 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:43,629 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:41:43,636 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 18:41:43,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682434106] [2020-01-16 18:41:43,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:43,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:43,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072414889] [2020-01-16 18:41:43,637 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:43,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:43,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:43,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:43,637 INFO L87 Difference]: Start difference. First operand 1580 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:41:43,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:43,849 INFO L93 Difference]: Finished difference Result 3006 states and 11831 transitions. [2020-01-16 18:41:43,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:43,849 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:43,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:43,857 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:41:43,857 INFO L226 Difference]: Without dead ends: 2988 [2020-01-16 18:41:43,857 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 18:41:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-01-16 18:41:43,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1587. [2020-01-16 18:41:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:41:43,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7046 transitions. [2020-01-16 18:41:43,924 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7046 transitions. Word has length 28 [2020-01-16 18:41:43,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:43,924 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7046 transitions. [2020-01-16 18:41:43,924 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:43,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7046 transitions. [2020-01-16 18:41:43,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:43,927 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:43,927 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 18:41:43,927 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 18:41:43,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:43,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1303924504, now seen corresponding path program 708 times [2020-01-16 18:41:43,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:43,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302947196] [2020-01-16 18:41:43,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:44,410 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:44,537 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:44,544 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 18:41:44,544 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302947196] [2020-01-16 18:41:44,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:44,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:44,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943916487] [2020-01-16 18:41:44,545 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:44,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:44,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:44,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:44,545 INFO L87 Difference]: Start difference. First operand 1587 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:41:44,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:44,750 INFO L93 Difference]: Finished difference Result 3005 states and 11822 transitions. [2020-01-16 18:41:44,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:44,751 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:44,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:44,758 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:41:44,758 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 18:41:44,758 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 18:41:44,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 18:41:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1570. [2020-01-16 18:41:44,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:41:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7010 transitions. [2020-01-16 18:41:44,824 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7010 transitions. Word has length 28 [2020-01-16 18:41:44,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:44,824 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7010 transitions. [2020-01-16 18:41:44,824 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:44,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7010 transitions. [2020-01-16 18:41:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:44,827 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:44,827 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:44,827 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 18:41:44,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:44,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1773593256, now seen corresponding path program 709 times [2020-01-16 18:41:44,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:44,827 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830632430] [2020-01-16 18:41:44,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:45,306 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:41:45,433 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:45,440 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 18:41:45,440 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830632430] [2020-01-16 18:41:45,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:45,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:45,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512014319] [2020-01-16 18:41:45,441 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:45,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:45,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:45,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:45,441 INFO L87 Difference]: Start difference. First operand 1570 states and 7010 transitions. Second operand 11 states. [2020-01-16 18:41:45,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:45,626 INFO L93 Difference]: Finished difference Result 2988 states and 11789 transitions. [2020-01-16 18:41:45,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:45,627 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:45,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:45,634 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:41:45,635 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:41:45,635 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 18:41:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:41:45,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1580. [2020-01-16 18:41:45,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:41:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7036 transitions. [2020-01-16 18:41:45,702 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7036 transitions. Word has length 28 [2020-01-16 18:41:45,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:45,702 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7036 transitions. [2020-01-16 18:41:45,702 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:45,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7036 transitions. [2020-01-16 18:41:45,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:45,704 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:45,704 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 18:41:45,705 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 18:41:45,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:45,705 INFO L82 PathProgramCache]: Analyzing trace with hash 457435952, now seen corresponding path program 710 times [2020-01-16 18:41:45,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:45,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381952421] [2020-01-16 18:41:45,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:46,292 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:46,299 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381952421] [2020-01-16 18:41:46,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:46,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:46,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227728733] [2020-01-16 18:41:46,299 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:46,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:46,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:46,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:46,299 INFO L87 Difference]: Start difference. First operand 1580 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:41:46,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:46,513 INFO L93 Difference]: Finished difference Result 2982 states and 11773 transitions. [2020-01-16 18:41:46,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:46,513 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:46,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:46,520 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:41:46,520 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 18:41:46,520 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 18:41:46,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 18:41:46,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1575. [2020-01-16 18:41:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:41:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7023 transitions. [2020-01-16 18:41:46,587 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7023 transitions. Word has length 28 [2020-01-16 18:41:46,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:46,587 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7023 transitions. [2020-01-16 18:41:46,587 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:46,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7023 transitions. [2020-01-16 18:41:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:46,589 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:46,589 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 18:41:46,589 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 18:41:46,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:46,590 INFO L82 PathProgramCache]: Analyzing trace with hash 700507876, now seen corresponding path program 711 times [2020-01-16 18:41:46,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:46,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185328802] [2020-01-16 18:41:46,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:47,062 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:41:47,189 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:47,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185328802] [2020-01-16 18:41:47,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:47,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:47,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346910448] [2020-01-16 18:41:47,196 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:47,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:47,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:47,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:47,196 INFO L87 Difference]: Start difference. First operand 1575 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:41:47,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:47,358 INFO L93 Difference]: Finished difference Result 2994 states and 11799 transitions. [2020-01-16 18:41:47,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:47,358 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:47,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:47,365 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 18:41:47,366 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:41:47,366 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 18:41:47,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:41:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1583. [2020-01-16 18:41:47,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:41:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7037 transitions. [2020-01-16 18:41:47,432 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7037 transitions. Word has length 28 [2020-01-16 18:41:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:47,433 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7037 transitions. [2020-01-16 18:41:47,433 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:47,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7037 transitions. [2020-01-16 18:41:47,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:47,435 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:47,435 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 18:41:47,435 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 18:41:47,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:47,435 INFO L82 PathProgramCache]: Analyzing trace with hash 873755568, now seen corresponding path program 712 times [2020-01-16 18:41:47,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:47,435 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528112612] [2020-01-16 18:41:47,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:48,039 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:48,046 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 18:41:48,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528112612] [2020-01-16 18:41:48,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:48,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:48,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203021513] [2020-01-16 18:41:48,047 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:48,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:48,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:48,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:48,047 INFO L87 Difference]: Start difference. First operand 1583 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:41:48,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:48,296 INFO L93 Difference]: Finished difference Result 2991 states and 11786 transitions. [2020-01-16 18:41:48,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:48,297 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:48,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:48,304 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:41:48,305 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:41:48,305 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 18:41:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:41:48,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1575. [2020-01-16 18:41:48,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:41:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7018 transitions. [2020-01-16 18:41:48,383 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7018 transitions. Word has length 28 [2020-01-16 18:41:48,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:48,383 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7018 transitions. [2020-01-16 18:41:48,383 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:48,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7018 transitions. [2020-01-16 18:41:48,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:48,386 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:48,386 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 18:41:48,386 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 18:41:48,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:48,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1533147108, now seen corresponding path program 713 times [2020-01-16 18:41:48,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:48,386 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419941881] [2020-01-16 18:41:48,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:48,984 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:48,991 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419941881] [2020-01-16 18:41:48,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:48,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:48,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169704205] [2020-01-16 18:41:48,992 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:48,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:48,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:48,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:48,992 INFO L87 Difference]: Start difference. First operand 1575 states and 7018 transitions. Second operand 11 states. [2020-01-16 18:41:49,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:49,236 INFO L93 Difference]: Finished difference Result 2978 states and 11761 transitions. [2020-01-16 18:41:49,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:49,236 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:49,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:49,244 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:41:49,244 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:41:49,244 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 18:41:49,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:41:49,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1579. [2020-01-16 18:41:49,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:41:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7025 transitions. [2020-01-16 18:41:49,311 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7025 transitions. Word has length 28 [2020-01-16 18:41:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:49,311 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7025 transitions. [2020-01-16 18:41:49,311 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7025 transitions. [2020-01-16 18:41:49,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:49,313 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:49,313 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 18:41:49,313 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 18:41:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:49,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1272415192, now seen corresponding path program 714 times [2020-01-16 18:41:49,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:49,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467122977] [2020-01-16 18:41:49,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:49,910 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:41:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:49,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467122977] [2020-01-16 18:41:49,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:49,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:49,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854120231] [2020-01-16 18:41:49,919 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:49,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:49,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:49,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:49,919 INFO L87 Difference]: Start difference. First operand 1579 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:41:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:50,169 INFO L93 Difference]: Finished difference Result 2981 states and 11763 transitions. [2020-01-16 18:41:50,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:50,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:50,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:50,177 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:41:50,177 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 18:41:50,177 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 18:41:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 18:41:50,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1570. [2020-01-16 18:41:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:41:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7005 transitions. [2020-01-16 18:41:50,244 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7005 transitions. Word has length 28 [2020-01-16 18:41:50,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:50,244 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7005 transitions. [2020-01-16 18:41:50,245 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7005 transitions. [2020-01-16 18:41:50,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:50,247 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:50,247 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:50,247 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 18:41:50,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:50,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1766168438, now seen corresponding path program 715 times [2020-01-16 18:41:50,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:50,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125981825] [2020-01-16 18:41:50,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:50,712 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:50,840 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:41:50,847 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 18:41:50,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125981825] [2020-01-16 18:41:50,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:50,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:50,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990116161] [2020-01-16 18:41:50,847 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:50,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:50,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:50,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:50,848 INFO L87 Difference]: Start difference. First operand 1570 states and 7005 transitions. Second operand 11 states. [2020-01-16 18:41:51,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:51,046 INFO L93 Difference]: Finished difference Result 2978 states and 11766 transitions. [2020-01-16 18:41:51,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:51,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:51,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:51,054 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:41:51,054 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:41:51,054 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 18:41:51,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:41:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1578. [2020-01-16 18:41:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:41:51,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7027 transitions. [2020-01-16 18:41:51,121 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7027 transitions. Word has length 28 [2020-01-16 18:41:51,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:51,121 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7027 transitions. [2020-01-16 18:41:51,121 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:51,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7027 transitions. [2020-01-16 18:41:51,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:51,123 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:51,123 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 18:41:51,123 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 18:41:51,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:51,124 INFO L82 PathProgramCache]: Analyzing trace with hash 467939056, now seen corresponding path program 716 times [2020-01-16 18:41:51,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:51,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439787829] [2020-01-16 18:41:51,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:51,712 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:41:51,719 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 18:41:51,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439787829] [2020-01-16 18:41:51,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:51,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:51,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264476816] [2020-01-16 18:41:51,720 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:51,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:51,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:51,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:51,720 INFO L87 Difference]: Start difference. First operand 1578 states and 7027 transitions. Second operand 11 states. [2020-01-16 18:41:51,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:51,955 INFO L93 Difference]: Finished difference Result 2974 states and 11754 transitions. [2020-01-16 18:41:51,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:51,956 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:51,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:51,963 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:41:51,964 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:41:51,964 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 18:41:52,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:41:52,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1574. [2020-01-16 18:41:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:41:52,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7016 transitions. [2020-01-16 18:41:52,030 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7016 transitions. Word has length 28 [2020-01-16 18:41:52,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:52,030 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7016 transitions. [2020-01-16 18:41:52,030 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:52,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7016 transitions. [2020-01-16 18:41:52,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:52,032 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:52,032 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:52,033 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 18:41:52,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:52,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1455713478, now seen corresponding path program 717 times [2020-01-16 18:41:52,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:52,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972992153] [2020-01-16 18:41:52,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:52,510 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:41:52,638 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:41:52,644 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 18:41:52,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972992153] [2020-01-16 18:41:52,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:52,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:52,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910211719] [2020-01-16 18:41:52,645 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:52,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:52,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:52,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:52,646 INFO L87 Difference]: Start difference. First operand 1574 states and 7016 transitions. Second operand 11 states. [2020-01-16 18:41:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:52,879 INFO L93 Difference]: Finished difference Result 2984 states and 11777 transitions. [2020-01-16 18:41:52,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:52,879 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:52,886 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:41:52,887 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:41:52,887 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 18:41:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:41:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1581. [2020-01-16 18:41:52,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:41:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7029 transitions. [2020-01-16 18:41:52,954 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7029 transitions. Word has length 28 [2020-01-16 18:41:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:52,954 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7029 transitions. [2020-01-16 18:41:52,954 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:52,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7029 transitions. [2020-01-16 18:41:52,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:52,956 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:52,956 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 18:41:52,956 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 18:41:52,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:52,956 INFO L82 PathProgramCache]: Analyzing trace with hash 884258672, now seen corresponding path program 718 times [2020-01-16 18:41:52,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:52,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962974373] [2020-01-16 18:41:52,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:53,581 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:53,588 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 18:41:53,588 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962974373] [2020-01-16 18:41:53,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:53,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:53,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114086491] [2020-01-16 18:41:53,589 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:53,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:53,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:53,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:53,589 INFO L87 Difference]: Start difference. First operand 1581 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:41:53,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:53,840 INFO L93 Difference]: Finished difference Result 2983 states and 11768 transitions. [2020-01-16 18:41:53,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:53,840 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:53,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:53,848 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:41:53,848 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:41:53,848 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 18:41:53,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:41:53,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1574. [2020-01-16 18:41:53,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:41:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7012 transitions. [2020-01-16 18:41:53,914 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7012 transitions. Word has length 28 [2020-01-16 18:41:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:53,915 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7012 transitions. [2020-01-16 18:41:53,915 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7012 transitions. [2020-01-16 18:41:53,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:53,917 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:53,917 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:53,917 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 18:41:53,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:53,917 INFO L82 PathProgramCache]: Analyzing trace with hash -67290746, now seen corresponding path program 719 times [2020-01-16 18:41:53,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:53,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209273251] [2020-01-16 18:41:53,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:54,527 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:54,534 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 18:41:54,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209273251] [2020-01-16 18:41:54,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:54,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:54,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628469420] [2020-01-16 18:41:54,535 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:54,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:54,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:54,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:54,535 INFO L87 Difference]: Start difference. First operand 1574 states and 7012 transitions. Second operand 11 states. [2020-01-16 18:41:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:54,790 INFO L93 Difference]: Finished difference Result 2973 states and 11748 transitions. [2020-01-16 18:41:54,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:54,791 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:54,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:54,798 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:41:54,798 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:41:54,799 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 18:41:54,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:41:54,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1578. [2020-01-16 18:41:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:41:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7019 transitions. [2020-01-16 18:41:54,865 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7019 transitions. Word has length 28 [2020-01-16 18:41:54,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:54,866 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7019 transitions. [2020-01-16 18:41:54,866 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:54,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7019 transitions. [2020-01-16 18:41:54,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:54,868 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:54,868 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:54,868 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 18:41:54,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:54,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1422114250, now seen corresponding path program 720 times [2020-01-16 18:41:54,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:54,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518623735] [2020-01-16 18:41:54,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:55,466 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:41:55,473 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 18:41:55,474 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518623735] [2020-01-16 18:41:55,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:55,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:55,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134205409] [2020-01-16 18:41:55,474 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:55,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:55,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:55,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:55,474 INFO L87 Difference]: Start difference. First operand 1578 states and 7019 transitions. Second operand 11 states. [2020-01-16 18:41:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:55,734 INFO L93 Difference]: Finished difference Result 2976 states and 11750 transitions. [2020-01-16 18:41:55,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:55,735 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:55,742 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:41:55,743 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:41:55,743 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 18:41:55,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:41:55,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1545. [2020-01-16 18:41:55,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-01-16 18:41:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 6955 transitions. [2020-01-16 18:41:55,811 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 6955 transitions. Word has length 28 [2020-01-16 18:41:55,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:55,811 INFO L478 AbstractCegarLoop]: Abstraction has 1545 states and 6955 transitions. [2020-01-16 18:41:55,811 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:55,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 6955 transitions. [2020-01-16 18:41:55,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:55,813 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:55,813 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 18:41:55,813 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 18:41:55,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:55,813 INFO L82 PathProgramCache]: Analyzing trace with hash -645301276, now seen corresponding path program 721 times [2020-01-16 18:41:55,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:55,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122304988] [2020-01-16 18:41:55,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:56,291 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-01-16 18:41:56,417 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:41:56,423 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 18:41:56,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122304988] [2020-01-16 18:41:56,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:56,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:56,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731938405] [2020-01-16 18:41:56,424 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:56,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:56,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:56,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:56,425 INFO L87 Difference]: Start difference. First operand 1545 states and 6955 transitions. Second operand 11 states. [2020-01-16 18:41:56,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:56,713 INFO L93 Difference]: Finished difference Result 2968 states and 11774 transitions. [2020-01-16 18:41:56,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:56,714 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:56,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:56,721 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:41:56,721 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:41:56,722 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 18:41:56,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:41:56,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1581. [2020-01-16 18:41:56,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:41:56,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7101 transitions. [2020-01-16 18:41:56,812 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7101 transitions. Word has length 28 [2020-01-16 18:41:56,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:56,812 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7101 transitions. [2020-01-16 18:41:56,813 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:56,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7101 transitions. [2020-01-16 18:41:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:56,815 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:56,815 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:56,815 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 18:41:56,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:56,815 INFO L82 PathProgramCache]: Analyzing trace with hash 99401222, now seen corresponding path program 722 times [2020-01-16 18:41:56,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:56,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801948724] [2020-01-16 18:41:56,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:57,410 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:41:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:41:57,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801948724] [2020-01-16 18:41:57,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:57,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:57,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212672178] [2020-01-16 18:41:57,418 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:57,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:57,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:57,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:57,418 INFO L87 Difference]: Start difference. First operand 1581 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:41:57,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:57,706 INFO L93 Difference]: Finished difference Result 2969 states and 11771 transitions. [2020-01-16 18:41:57,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:57,707 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:57,714 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 18:41:57,715 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:41:57,715 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 18:41:57,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:41:57,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1576. [2020-01-16 18:41:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:41:57,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7087 transitions. [2020-01-16 18:41:57,781 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7087 transitions. Word has length 28 [2020-01-16 18:41:57,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:57,781 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7087 transitions. [2020-01-16 18:41:57,781 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:57,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7087 transitions. [2020-01-16 18:41:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:57,783 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:57,783 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:41:57,784 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 18:41:57,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:57,784 INFO L82 PathProgramCache]: Analyzing trace with hash 965639682, now seen corresponding path program 723 times [2020-01-16 18:41:57,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:57,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69611306] [2020-01-16 18:41:57,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:58,375 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:41:58,382 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 18:41:58,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69611306] [2020-01-16 18:41:58,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:58,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:58,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769426326] [2020-01-16 18:41:58,382 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:58,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:58,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:58,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:58,383 INFO L87 Difference]: Start difference. First operand 1576 states and 7087 transitions. Second operand 11 states. [2020-01-16 18:41:58,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:58,663 INFO L93 Difference]: Finished difference Result 2973 states and 11778 transitions. [2020-01-16 18:41:58,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:58,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:58,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:58,670 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:41:58,671 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:41:58,671 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:41:58,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:41:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1582. [2020-01-16 18:41:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:41:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7098 transitions. [2020-01-16 18:41:58,737 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7098 transitions. Word has length 28 [2020-01-16 18:41:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:58,737 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7098 transitions. [2020-01-16 18:41:58,737 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:58,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7098 transitions. [2020-01-16 18:41:58,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:58,739 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:58,739 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 18:41:58,740 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 18:41:58,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:58,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1839922618, now seen corresponding path program 724 times [2020-01-16 18:41:58,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:58,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851640885] [2020-01-16 18:41:58,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:41:59,216 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29 [2020-01-16 18:41:59,342 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:41:59,349 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 18:41:59,349 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851640885] [2020-01-16 18:41:59,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:41:59,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:41:59,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256927488] [2020-01-16 18:41:59,349 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:41:59,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:41:59,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:41:59,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:41:59,350 INFO L87 Difference]: Start difference. First operand 1582 states and 7098 transitions. Second operand 11 states. [2020-01-16 18:41:59,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:41:59,533 INFO L93 Difference]: Finished difference Result 2978 states and 11782 transitions. [2020-01-16 18:41:59,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:41:59,534 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:41:59,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:41:59,540 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:41:59,541 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:41:59,541 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 18:41:59,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:41:59,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1576. [2020-01-16 18:41:59,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:41:59,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7081 transitions. [2020-01-16 18:41:59,609 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7081 transitions. Word has length 28 [2020-01-16 18:41:59,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:41:59,609 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7081 transitions. [2020-01-16 18:41:59,609 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:41:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7081 transitions. [2020-01-16 18:41:59,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:41:59,612 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:41:59,612 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 18:41:59,612 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 18:41:59,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:41:59,612 INFO L82 PathProgramCache]: Analyzing trace with hash -973684158, now seen corresponding path program 725 times [2020-01-16 18:41:59,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:41:59,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808297289] [2020-01-16 18:41:59,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:41:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:00,226 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:00,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808297289] [2020-01-16 18:42:00,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:00,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:00,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508381886] [2020-01-16 18:42:00,234 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:00,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:00,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:00,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:00,234 INFO L87 Difference]: Start difference. First operand 1576 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:42:00,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:00,448 INFO L93 Difference]: Finished difference Result 2976 states and 11779 transitions. [2020-01-16 18:42:00,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:00,449 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:00,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:00,456 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:42:00,457 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:42:00,457 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 18:42:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:42:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1583. [2020-01-16 18:42:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:42:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7094 transitions. [2020-01-16 18:42:00,525 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7094 transitions. Word has length 28 [2020-01-16 18:42:00,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:00,525 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7094 transitions. [2020-01-16 18:42:00,525 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:00,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7094 transitions. [2020-01-16 18:42:00,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:00,527 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:00,527 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 18:42:00,527 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 18:42:00,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:00,528 INFO L82 PathProgramCache]: Analyzing trace with hash -228981660, now seen corresponding path program 726 times [2020-01-16 18:42:00,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:00,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714052021] [2020-01-16 18:42:00,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:01,033 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-01-16 18:42:01,162 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:01,169 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 18:42:01,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714052021] [2020-01-16 18:42:01,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:01,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:01,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542102922] [2020-01-16 18:42:01,169 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:01,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:01,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:01,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:01,170 INFO L87 Difference]: Start difference. First operand 1583 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:42:01,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:01,423 INFO L93 Difference]: Finished difference Result 2980 states and 11780 transitions. [2020-01-16 18:42:01,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:01,424 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:01,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:01,431 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:42:01,431 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:42:01,431 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 18:42:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:42:01,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1570. [2020-01-16 18:42:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:42:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7064 transitions. [2020-01-16 18:42:01,499 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7064 transitions. Word has length 28 [2020-01-16 18:42:01,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:01,499 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7064 transitions. [2020-01-16 18:42:01,499 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7064 transitions. [2020-01-16 18:42:01,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:01,502 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:01,502 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 18:42:01,502 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 18:42:01,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:01,502 INFO L82 PathProgramCache]: Analyzing trace with hash 74711198, now seen corresponding path program 727 times [2020-01-16 18:42:01,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:01,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100601068] [2020-01-16 18:42:01,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:02,098 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:02,106 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 18:42:02,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100601068] [2020-01-16 18:42:02,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:02,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:02,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361674685] [2020-01-16 18:42:02,106 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:02,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:02,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:02,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:02,107 INFO L87 Difference]: Start difference. First operand 1570 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:42:02,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:02,326 INFO L93 Difference]: Finished difference Result 2963 states and 11758 transitions. [2020-01-16 18:42:02,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:02,327 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:02,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:02,334 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:42:02,335 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:42:02,335 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 18:42:02,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:42:02,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1580. [2020-01-16 18:42:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:42:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7092 transitions. [2020-01-16 18:42:02,403 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7092 transitions. Word has length 28 [2020-01-16 18:42:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:02,403 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7092 transitions. [2020-01-16 18:42:02,403 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7092 transitions. [2020-01-16 18:42:02,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:02,405 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:02,405 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 18:42:02,405 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 18:42:02,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:02,405 INFO L82 PathProgramCache]: Analyzing trace with hash 819413696, now seen corresponding path program 728 times [2020-01-16 18:42:02,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:02,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851922864] [2020-01-16 18:42:02,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:03,009 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:03,016 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 18:42:03,016 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851922864] [2020-01-16 18:42:03,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:03,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:03,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037676883] [2020-01-16 18:42:03,016 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:03,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:03,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:03,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:03,017 INFO L87 Difference]: Start difference. First operand 1580 states and 7092 transitions. Second operand 11 states. [2020-01-16 18:42:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:03,310 INFO L93 Difference]: Finished difference Result 2964 states and 11755 transitions. [2020-01-16 18:42:03,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:03,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:03,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:03,317 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:42:03,317 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 18:42:03,317 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 18:42:03,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 18:42:03,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1575. [2020-01-16 18:42:03,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:42:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7078 transitions. [2020-01-16 18:42:03,385 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7078 transitions. Word has length 28 [2020-01-16 18:42:03,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:03,385 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7078 transitions. [2020-01-16 18:42:03,385 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:03,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7078 transitions. [2020-01-16 18:42:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:03,388 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:03,388 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 18:42:03,388 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 18:42:03,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:03,388 INFO L82 PathProgramCache]: Analyzing trace with hash -998374182, now seen corresponding path program 729 times [2020-01-16 18:42:03,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:03,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308274248] [2020-01-16 18:42:03,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:03,881 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:42:04,007 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:04,014 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 18:42:04,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308274248] [2020-01-16 18:42:04,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:04,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:04,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239936934] [2020-01-16 18:42:04,015 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:04,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:04,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:04,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:04,015 INFO L87 Difference]: Start difference. First operand 1575 states and 7078 transitions. Second operand 11 states. [2020-01-16 18:42:04,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:04,300 INFO L93 Difference]: Finished difference Result 2965 states and 11757 transitions. [2020-01-16 18:42:04,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:04,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:04,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:04,307 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:42:04,307 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:42:04,307 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 18:42:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:42:04,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1580. [2020-01-16 18:42:04,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:42:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7087 transitions. [2020-01-16 18:42:04,374 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7087 transitions. Word has length 28 [2020-01-16 18:42:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:04,374 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7087 transitions. [2020-01-16 18:42:04,374 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7087 transitions. [2020-01-16 18:42:04,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:04,376 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:04,376 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:04,376 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 18:42:04,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:04,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1235733312, now seen corresponding path program 730 times [2020-01-16 18:42:04,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:04,377 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426774063] [2020-01-16 18:42:04,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:04,972 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:04,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426774063] [2020-01-16 18:42:04,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:04,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:04,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028516941] [2020-01-16 18:42:04,979 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:04,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:04,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:04,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:04,980 INFO L87 Difference]: Start difference. First operand 1580 states and 7087 transitions. Second operand 11 states. [2020-01-16 18:42:05,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:05,202 INFO L93 Difference]: Finished difference Result 2968 states and 11758 transitions. [2020-01-16 18:42:05,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:05,202 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:05,210 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:42:05,210 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:42:05,210 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 18:42:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:42:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1575. [2020-01-16 18:42:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:42:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7073 transitions. [2020-01-16 18:42:05,276 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7073 transitions. Word has length 28 [2020-01-16 18:42:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:05,277 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7073 transitions. [2020-01-16 18:42:05,277 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7073 transitions. [2020-01-16 18:42:05,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:05,279 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:05,279 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 18:42:05,279 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 18:42:05,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:05,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1357269274, now seen corresponding path program 731 times [2020-01-16 18:42:05,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:05,279 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979294245] [2020-01-16 18:42:05,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:05,870 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:05,877 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 18:42:05,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979294245] [2020-01-16 18:42:05,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:05,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:05,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486195826] [2020-01-16 18:42:05,878 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:05,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:05,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:05,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:05,878 INFO L87 Difference]: Start difference. First operand 1575 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:42:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:06,162 INFO L93 Difference]: Finished difference Result 2968 states and 11759 transitions. [2020-01-16 18:42:06,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:06,162 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:06,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:06,169 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:42:06,169 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:42:06,170 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 18:42:06,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:42:06,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1581. [2020-01-16 18:42:06,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:42:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7084 transitions. [2020-01-16 18:42:06,236 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7084 transitions. Word has length 28 [2020-01-16 18:42:06,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:06,236 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7084 transitions. [2020-01-16 18:42:06,236 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:06,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7084 transitions. [2020-01-16 18:42:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:06,238 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:06,238 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 18:42:06,238 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 18:42:06,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:06,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1448293026, now seen corresponding path program 732 times [2020-01-16 18:42:06,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:06,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212498214] [2020-01-16 18:42:06,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:06,708 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:42:06,838 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:06,844 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 18:42:06,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212498214] [2020-01-16 18:42:06,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:06,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:06,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058441220] [2020-01-16 18:42:06,845 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:06,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:06,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:06,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:06,845 INFO L87 Difference]: Start difference. First operand 1581 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:42:07,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:07,040 INFO L93 Difference]: Finished difference Result 2970 states and 11757 transitions. [2020-01-16 18:42:07,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:07,041 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:07,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:07,048 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:42:07,048 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:42:07,048 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 18:42:07,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:42:07,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1570. [2020-01-16 18:42:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:42:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7059 transitions. [2020-01-16 18:42:07,114 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7059 transitions. Word has length 28 [2020-01-16 18:42:07,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:07,114 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7059 transitions. [2020-01-16 18:42:07,114 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:07,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7059 transitions. [2020-01-16 18:42:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:07,116 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:07,116 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 18:42:07,116 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 18:42:07,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:07,117 INFO L82 PathProgramCache]: Analyzing trace with hash 85214302, now seen corresponding path program 733 times [2020-01-16 18:42:07,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:07,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61399666] [2020-01-16 18:42:07,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:07,708 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:42:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:07,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61399666] [2020-01-16 18:42:07,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:07,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:07,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489744219] [2020-01-16 18:42:07,714 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:07,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:07,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:07,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:07,715 INFO L87 Difference]: Start difference. First operand 1570 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:42:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:07,925 INFO L93 Difference]: Finished difference Result 2979 states and 11785 transitions. [2020-01-16 18:42:07,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:07,925 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:07,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:07,933 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:42:07,933 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:42:07,933 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 18:42:07,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:42:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1583. [2020-01-16 18:42:07,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:42:08,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7094 transitions. [2020-01-16 18:42:08,000 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7094 transitions. Word has length 28 [2020-01-16 18:42:08,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:08,000 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7094 transitions. [2020-01-16 18:42:08,000 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:08,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7094 transitions. [2020-01-16 18:42:08,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:08,002 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:08,003 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:08,003 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 18:42:08,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:08,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1574619298, now seen corresponding path program 734 times [2020-01-16 18:42:08,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:08,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150111559] [2020-01-16 18:42:08,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:08,477 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29 [2020-01-16 18:42:08,604 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:42:08,611 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 18:42:08,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150111559] [2020-01-16 18:42:08,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:08,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:08,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840441249] [2020-01-16 18:42:08,612 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:08,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:08,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:08,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:08,612 INFO L87 Difference]: Start difference. First operand 1583 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:42:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:08,760 INFO L93 Difference]: Finished difference Result 2984 states and 11789 transitions. [2020-01-16 18:42:08,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:08,760 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:08,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:08,768 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:42:08,768 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:42:08,768 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:42:08,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:42:08,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1577. [2020-01-16 18:42:08,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:42:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7077 transitions. [2020-01-16 18:42:08,834 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7077 transitions. Word has length 28 [2020-01-16 18:42:08,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:08,835 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7077 transitions. [2020-01-16 18:42:08,835 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:08,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7077 transitions. [2020-01-16 18:42:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:08,837 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:08,837 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:08,837 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 18:42:08,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:08,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1696155260, now seen corresponding path program 735 times [2020-01-16 18:42:08,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:08,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358341320] [2020-01-16 18:42:08,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:09,318 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:42:09,445 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:09,451 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 18:42:09,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358341320] [2020-01-16 18:42:09,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:09,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:09,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194955000] [2020-01-16 18:42:09,452 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:09,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:09,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:09,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:09,452 INFO L87 Difference]: Start difference. First operand 1577 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:42:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:09,643 INFO L93 Difference]: Finished difference Result 2976 states and 11774 transitions. [2020-01-16 18:42:09,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:09,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:09,651 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:42:09,651 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:42:09,652 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 18:42:09,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:42:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1582. [2020-01-16 18:42:09,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:42:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7086 transitions. [2020-01-16 18:42:09,718 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7086 transitions. Word has length 28 [2020-01-16 18:42:09,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:09,718 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7086 transitions. [2020-01-16 18:42:09,718 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:09,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7086 transitions. [2020-01-16 18:42:09,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:09,720 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:09,720 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:09,721 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 18:42:09,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:09,721 INFO L82 PathProgramCache]: Analyzing trace with hash -364704542, now seen corresponding path program 736 times [2020-01-16 18:42:09,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:09,721 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551971192] [2020-01-16 18:42:09,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:10,346 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:10,351 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 18:42:10,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551971192] [2020-01-16 18:42:10,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:10,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:10,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480816433] [2020-01-16 18:42:10,351 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:10,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:10,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:10,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:10,352 INFO L87 Difference]: Start difference. First operand 1582 states and 7086 transitions. Second operand 11 states. [2020-01-16 18:42:10,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:10,543 INFO L93 Difference]: Finished difference Result 2979 states and 11775 transitions. [2020-01-16 18:42:10,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:10,544 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:10,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:10,551 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:42:10,551 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:42:10,551 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 18:42:10,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:42:10,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1577. [2020-01-16 18:42:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:42:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7072 transitions. [2020-01-16 18:42:10,617 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7072 transitions. Word has length 28 [2020-01-16 18:42:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:10,617 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7072 transitions. [2020-01-16 18:42:10,617 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7072 transitions. [2020-01-16 18:42:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:10,620 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:10,620 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 18:42:10,620 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 18:42:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:10,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2112474876, now seen corresponding path program 737 times [2020-01-16 18:42:10,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:10,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563371871] [2020-01-16 18:42:10,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:11,105 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29 [2020-01-16 18:42:11,232 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:42:11,239 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 18:42:11,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563371871] [2020-01-16 18:42:11,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:11,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:11,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335320737] [2020-01-16 18:42:11,240 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:11,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:11,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:11,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:11,240 INFO L87 Difference]: Start difference. First operand 1577 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:42:11,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:11,411 INFO L93 Difference]: Finished difference Result 2991 states and 11799 transitions. [2020-01-16 18:42:11,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:11,411 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:11,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:11,419 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:42:11,419 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 18:42:11,419 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 18:42:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 18:42:11,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1587. [2020-01-16 18:42:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:42:11,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7089 transitions. [2020-01-16 18:42:11,485 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7089 transitions. Word has length 28 [2020-01-16 18:42:11,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:11,485 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7089 transitions. [2020-01-16 18:42:11,485 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:11,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7089 transitions. [2020-01-16 18:42:11,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:11,488 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:11,488 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 18:42:11,488 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 18:42:11,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:11,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1437789922, now seen corresponding path program 738 times [2020-01-16 18:42:11,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:11,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225198007] [2020-01-16 18:42:11,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:12,101 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:12,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225198007] [2020-01-16 18:42:12,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:12,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:12,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138106226] [2020-01-16 18:42:12,109 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:12,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:12,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:12,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:12,110 INFO L87 Difference]: Start difference. First operand 1587 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:42:12,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:12,315 INFO L93 Difference]: Finished difference Result 2989 states and 11787 transitions. [2020-01-16 18:42:12,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:12,315 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:12,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:12,322 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 18:42:12,323 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:42:12,323 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 18:42:12,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:42:12,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1570. [2020-01-16 18:42:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:42:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 18:42:12,388 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 18:42:12,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:12,388 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 18:42:12,388 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:12,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 18:42:12,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:12,391 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:12,391 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:12,391 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 18:42:12,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:12,391 INFO L82 PathProgramCache]: Analyzing trace with hash 840419904, now seen corresponding path program 739 times [2020-01-16 18:42:12,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:12,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318573146] [2020-01-16 18:42:12,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:12,998 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:13,005 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 18:42:13,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318573146] [2020-01-16 18:42:13,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:13,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:13,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524499060] [2020-01-16 18:42:13,005 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:13,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:13,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:13,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:13,006 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:42:13,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:13,210 INFO L93 Difference]: Finished difference Result 2986 states and 11797 transitions. [2020-01-16 18:42:13,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:13,210 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:13,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:13,218 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:42:13,219 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:42:13,219 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 18:42:13,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:42:13,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1585. [2020-01-16 18:42:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:42:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7093 transitions. [2020-01-16 18:42:13,285 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7093 transitions. Word has length 28 [2020-01-16 18:42:13,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:13,285 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7093 transitions. [2020-01-16 18:42:13,285 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:13,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7093 transitions. [2020-01-16 18:42:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:13,287 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:13,287 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 18:42:13,287 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 18:42:13,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:13,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1585122402, now seen corresponding path program 740 times [2020-01-16 18:42:13,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:13,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49882216] [2020-01-16 18:42:13,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:13,776 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-01-16 18:42:13,904 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:13,911 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49882216] [2020-01-16 18:42:13,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:13,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:13,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972211136] [2020-01-16 18:42:13,911 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:13,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:13,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:13,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:13,912 INFO L87 Difference]: Start difference. First operand 1585 states and 7093 transitions. Second operand 11 states. [2020-01-16 18:42:14,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:14,057 INFO L93 Difference]: Finished difference Result 2990 states and 11798 transitions. [2020-01-16 18:42:14,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:14,057 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:14,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:14,065 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:42:14,065 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 18:42:14,065 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 18:42:14,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 18:42:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1578. [2020-01-16 18:42:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:42:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7073 transitions. [2020-01-16 18:42:14,131 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7073 transitions. Word has length 28 [2020-01-16 18:42:14,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:14,131 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7073 transitions. [2020-01-16 18:42:14,131 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7073 transitions. [2020-01-16 18:42:14,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:14,134 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:14,134 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:14,134 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 18:42:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:14,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1843606434, now seen corresponding path program 741 times [2020-01-16 18:42:14,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:14,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605880021] [2020-01-16 18:42:14,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:14,611 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:42:14,740 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:14,746 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 18:42:14,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605880021] [2020-01-16 18:42:14,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:14,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:14,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815644623] [2020-01-16 18:42:14,747 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:14,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:14,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:14,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:14,748 INFO L87 Difference]: Start difference. First operand 1578 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:42:14,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:14,935 INFO L93 Difference]: Finished difference Result 2983 states and 11785 transitions. [2020-01-16 18:42:14,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:14,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:14,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:14,941 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:42:14,942 INFO L226 Difference]: Without dead ends: 2967 [2020-01-16 18:42:14,942 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 18:42:14,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-01-16 18:42:15,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1584. [2020-01-16 18:42:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:42:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7084 transitions. [2020-01-16 18:42:15,011 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7084 transitions. Word has length 28 [2020-01-16 18:42:15,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:15,011 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7084 transitions. [2020-01-16 18:42:15,011 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:15,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7084 transitions. [2020-01-16 18:42:15,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:15,013 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:15,013 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 18:42:15,014 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 18:42:15,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:15,014 INFO L82 PathProgramCache]: Analyzing trace with hash -354201438, now seen corresponding path program 742 times [2020-01-16 18:42:15,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:15,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111629884] [2020-01-16 18:42:15,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:15,610 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:15,617 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 18:42:15,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111629884] [2020-01-16 18:42:15,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:15,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:15,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129023406] [2020-01-16 18:42:15,618 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:15,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:15,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:15,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:15,618 INFO L87 Difference]: Start difference. First operand 1584 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:42:15,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:15,816 INFO L93 Difference]: Finished difference Result 2985 states and 11783 transitions. [2020-01-16 18:42:15,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:15,816 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:15,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:15,824 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:42:15,824 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:42:15,824 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 18:42:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:42:15,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1578. [2020-01-16 18:42:15,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:42:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7067 transitions. [2020-01-16 18:42:15,891 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7067 transitions. Word has length 28 [2020-01-16 18:42:15,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:15,891 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7067 transitions. [2020-01-16 18:42:15,891 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:15,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7067 transitions. [2020-01-16 18:42:15,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:15,894 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:15,894 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 18:42:15,894 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 18:42:15,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:15,894 INFO L82 PathProgramCache]: Analyzing trace with hash 512037022, now seen corresponding path program 743 times [2020-01-16 18:42:15,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:15,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979918278] [2020-01-16 18:42:15,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:16,382 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-01-16 18:42:16,512 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:16,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:16,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979918278] [2020-01-16 18:42:16,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:16,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:16,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267599381] [2020-01-16 18:42:16,520 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:16,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:16,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:16,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:16,520 INFO L87 Difference]: Start difference. First operand 1578 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:42:16,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:16,674 INFO L93 Difference]: Finished difference Result 2995 states and 11802 transitions. [2020-01-16 18:42:16,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:16,675 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:16,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:16,682 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 18:42:16,682 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:42:16,682 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 18:42:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:42:16,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1588. [2020-01-16 18:42:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:42:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7084 transitions. [2020-01-16 18:42:16,748 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7084 transitions. Word has length 28 [2020-01-16 18:42:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:16,749 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7084 transitions. [2020-01-16 18:42:16,749 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7084 transitions. [2020-01-16 18:42:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:16,751 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:16,751 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 18:42:16,751 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 18:42:16,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:16,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1256739520, now seen corresponding path program 744 times [2020-01-16 18:42:16,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:16,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059326543] [2020-01-16 18:42:16,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:17,391 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:17,398 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 18:42:17,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059326543] [2020-01-16 18:42:17,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:17,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:17,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579836769] [2020-01-16 18:42:17,399 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:17,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:17,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:17,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:17,399 INFO L87 Difference]: Start difference. First operand 1588 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:42:17,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:17,601 INFO L93 Difference]: Finished difference Result 2993 states and 11790 transitions. [2020-01-16 18:42:17,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:17,602 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:17,609 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:42:17,610 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:42:17,610 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 18:42:17,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:42:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1563. [2020-01-16 18:42:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:42:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7032 transitions. [2020-01-16 18:42:17,677 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7032 transitions. Word has length 28 [2020-01-16 18:42:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:17,677 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7032 transitions. [2020-01-16 18:42:17,677 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7032 transitions. [2020-01-16 18:42:17,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:17,680 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:17,680 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 18:42:17,680 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 18:42:17,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:17,680 INFO L82 PathProgramCache]: Analyzing trace with hash -725043348, now seen corresponding path program 745 times [2020-01-16 18:42:17,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:17,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052396490] [2020-01-16 18:42:17,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:18,271 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:42:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:18,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052396490] [2020-01-16 18:42:18,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:18,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:18,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130798572] [2020-01-16 18:42:18,278 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:18,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:18,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:18,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:18,278 INFO L87 Difference]: Start difference. First operand 1563 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:42:18,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:18,494 INFO L93 Difference]: Finished difference Result 2962 states and 11754 transitions. [2020-01-16 18:42:18,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:18,495 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:18,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:18,503 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:42:18,503 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:42:18,503 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 18:42:18,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:42:18,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1580. [2020-01-16 18:42:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:42:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7091 transitions. [2020-01-16 18:42:18,570 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7091 transitions. Word has length 28 [2020-01-16 18:42:18,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:18,571 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7091 transitions. [2020-01-16 18:42:18,571 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:18,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7091 transitions. [2020-01-16 18:42:18,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:18,573 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:18,573 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 18:42:18,573 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 18:42:18,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:18,573 INFO L82 PathProgramCache]: Analyzing trace with hash 19659150, now seen corresponding path program 746 times [2020-01-16 18:42:18,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:18,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113375259] [2020-01-16 18:42:18,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:19,167 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:19,173 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 18:42:19,174 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113375259] [2020-01-16 18:42:19,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:19,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:19,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371688669] [2020-01-16 18:42:19,174 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:19,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:19,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:19,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:19,175 INFO L87 Difference]: Start difference. First operand 1580 states and 7091 transitions. Second operand 11 states. [2020-01-16 18:42:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:19,365 INFO L93 Difference]: Finished difference Result 2963 states and 11751 transitions. [2020-01-16 18:42:19,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:19,366 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:19,373 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:42:19,374 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:42:19,374 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 18:42:19,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:42:19,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1575. [2020-01-16 18:42:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:42:19,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7077 transitions. [2020-01-16 18:42:19,441 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7077 transitions. Word has length 28 [2020-01-16 18:42:19,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:19,441 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7077 transitions. [2020-01-16 18:42:19,441 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7077 transitions. [2020-01-16 18:42:19,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:19,444 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:19,444 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 18:42:19,444 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 18:42:19,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:19,444 INFO L82 PathProgramCache]: Analyzing trace with hash 885897610, now seen corresponding path program 747 times [2020-01-16 18:42:19,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:19,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528186129] [2020-01-16 18:42:19,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:20,034 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:42:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:20,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528186129] [2020-01-16 18:42:20,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:20,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:20,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173885065] [2020-01-16 18:42:20,042 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:20,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:20,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:20,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:20,042 INFO L87 Difference]: Start difference. First operand 1575 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:42:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:20,233 INFO L93 Difference]: Finished difference Result 2967 states and 11758 transitions. [2020-01-16 18:42:20,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:20,234 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:20,241 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:42:20,241 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:42:20,241 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 18:42:20,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:42:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1581. [2020-01-16 18:42:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:42:20,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7088 transitions. [2020-01-16 18:42:20,308 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7088 transitions. Word has length 28 [2020-01-16 18:42:20,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:20,308 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7088 transitions. [2020-01-16 18:42:20,308 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7088 transitions. [2020-01-16 18:42:20,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:20,310 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:20,310 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:20,310 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 18:42:20,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:20,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1919664690, now seen corresponding path program 748 times [2020-01-16 18:42:20,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:20,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615632684] [2020-01-16 18:42:20,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:20,795 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 29 [2020-01-16 18:42:20,923 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:42:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:20,931 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615632684] [2020-01-16 18:42:20,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:20,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:20,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440231570] [2020-01-16 18:42:20,931 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:20,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:20,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:20,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:20,931 INFO L87 Difference]: Start difference. First operand 1581 states and 7088 transitions. Second operand 11 states. [2020-01-16 18:42:21,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:21,088 INFO L93 Difference]: Finished difference Result 2972 states and 11762 transitions. [2020-01-16 18:42:21,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:21,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:21,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:21,096 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:42:21,097 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:42:21,097 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 18:42:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:42:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1575. [2020-01-16 18:42:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:42:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 18:42:21,163 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 18:42:21,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:21,163 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 18:42:21,163 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:21,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 18:42:21,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:21,165 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:21,165 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 18:42:21,165 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 18:42:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:21,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1053426230, now seen corresponding path program 749 times [2020-01-16 18:42:21,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:21,166 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247302951] [2020-01-16 18:42:21,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:21,766 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:21,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:21,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247302951] [2020-01-16 18:42:21,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:21,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:21,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209490782] [2020-01-16 18:42:21,774 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:21,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:21,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:21,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:21,774 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:42:21,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:21,970 INFO L93 Difference]: Finished difference Result 2970 states and 11759 transitions. [2020-01-16 18:42:21,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:21,970 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:21,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:21,977 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:42:21,977 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:42:21,977 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 18:42:22,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:42:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1582. [2020-01-16 18:42:22,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:42:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7084 transitions. [2020-01-16 18:42:22,044 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7084 transitions. Word has length 28 [2020-01-16 18:42:22,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:22,044 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7084 transitions. [2020-01-16 18:42:22,044 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:22,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7084 transitions. [2020-01-16 18:42:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:22,046 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:22,046 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 18:42:22,046 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 18:42:22,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:22,046 INFO L82 PathProgramCache]: Analyzing trace with hash -308723732, now seen corresponding path program 750 times [2020-01-16 18:42:22,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:22,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925987509] [2020-01-16 18:42:22,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:22,537 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:42:22,662 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:22,669 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 18:42:22,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925987509] [2020-01-16 18:42:22,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:22,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:22,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245548462] [2020-01-16 18:42:22,670 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:22,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:22,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:22,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:22,670 INFO L87 Difference]: Start difference. First operand 1582 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:42:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:22,861 INFO L93 Difference]: Finished difference Result 2974 states and 11760 transitions. [2020-01-16 18:42:22,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:22,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:22,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:22,869 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:42:22,869 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:42:22,870 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 18:42:22,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:42:22,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1569. [2020-01-16 18:42:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:42:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7054 transitions. [2020-01-16 18:42:22,938 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7054 transitions. Word has length 28 [2020-01-16 18:42:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:22,938 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7054 transitions. [2020-01-16 18:42:22,938 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7054 transitions. [2020-01-16 18:42:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:22,940 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:22,940 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 18:42:22,940 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 18:42:22,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:22,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1550256474, now seen corresponding path program 751 times [2020-01-16 18:42:22,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:22,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383990487] [2020-01-16 18:42:22,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:23,554 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:42:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:23,561 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383990487] [2020-01-16 18:42:23,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:23,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:23,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476735775] [2020-01-16 18:42:23,562 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:23,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:23,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:23,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:23,562 INFO L87 Difference]: Start difference. First operand 1569 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:42:23,763 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2020-01-16 18:42:23,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:23,780 INFO L93 Difference]: Finished difference Result 2956 states and 11736 transitions. [2020-01-16 18:42:23,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:23,780 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:23,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:23,788 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:42:23,788 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:42:23,789 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 18:42:23,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:42:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1579. [2020-01-16 18:42:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:42:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7082 transitions. [2020-01-16 18:42:23,856 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7082 transitions. Word has length 28 [2020-01-16 18:42:23,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:23,856 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7082 transitions. [2020-01-16 18:42:23,856 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:23,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7082 transitions. [2020-01-16 18:42:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:23,858 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:23,858 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 18:42:23,858 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 18:42:23,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:23,859 INFO L82 PathProgramCache]: Analyzing trace with hash -805553976, now seen corresponding path program 752 times [2020-01-16 18:42:23,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:23,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505000775] [2020-01-16 18:42:23,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:24,459 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:24,465 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505000775] [2020-01-16 18:42:24,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:24,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:24,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370190514] [2020-01-16 18:42:24,465 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:24,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:24,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:24,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:24,466 INFO L87 Difference]: Start difference. First operand 1579 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:42:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:24,655 INFO L93 Difference]: Finished difference Result 2957 states and 11733 transitions. [2020-01-16 18:42:24,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:24,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:24,663 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 18:42:24,663 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:42:24,663 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 18:42:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:42:24,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1574. [2020-01-16 18:42:24,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:42:24,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7068 transitions. [2020-01-16 18:42:24,730 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7068 transitions. Word has length 28 [2020-01-16 18:42:24,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:24,730 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7068 transitions. [2020-01-16 18:42:24,730 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:24,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7068 transitions. [2020-01-16 18:42:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:24,732 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:24,733 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:24,733 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 18:42:24,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:24,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1136395640, now seen corresponding path program 753 times [2020-01-16 18:42:24,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:24,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629373682] [2020-01-16 18:42:24,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:25,203 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-01-16 18:42:25,330 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:42:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:25,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629373682] [2020-01-16 18:42:25,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:25,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:25,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512967385] [2020-01-16 18:42:25,338 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:25,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:25,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:25,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:25,339 INFO L87 Difference]: Start difference. First operand 1574 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:42:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:25,583 INFO L93 Difference]: Finished difference Result 2957 states and 11733 transitions. [2020-01-16 18:42:25,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:25,583 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:25,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:25,590 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 18:42:25,590 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:42:25,590 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 18:42:25,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:42:25,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1579. [2020-01-16 18:42:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:42:25,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7077 transitions. [2020-01-16 18:42:25,656 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7077 transitions. Word has length 28 [2020-01-16 18:42:25,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:25,656 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7077 transitions. [2020-01-16 18:42:25,656 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7077 transitions. [2020-01-16 18:42:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:25,659 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:25,659 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:25,659 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 18:42:25,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:25,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1495918968, now seen corresponding path program 754 times [2020-01-16 18:42:25,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:25,659 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868671288] [2020-01-16 18:42:25,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:26,266 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:42:26,273 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 18:42:26,273 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868671288] [2020-01-16 18:42:26,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:26,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:26,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495210743] [2020-01-16 18:42:26,273 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:26,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:26,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:26,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:26,274 INFO L87 Difference]: Start difference. First operand 1579 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:42:26,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:26,519 INFO L93 Difference]: Finished difference Result 2959 states and 11732 transitions. [2020-01-16 18:42:26,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:26,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:26,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:26,527 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:42:26,527 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:42:26,527 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:42:26,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:42:26,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1574. [2020-01-16 18:42:26,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:42:26,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7063 transitions. [2020-01-16 18:42:26,594 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7063 transitions. Word has length 28 [2020-01-16 18:42:26,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:26,594 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7063 transitions. [2020-01-16 18:42:26,594 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7063 transitions. [2020-01-16 18:42:26,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:26,597 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:26,597 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 18:42:26,597 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 18:42:26,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:26,597 INFO L82 PathProgramCache]: Analyzing trace with hash -802928200, now seen corresponding path program 755 times [2020-01-16 18:42:26,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:26,597 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84428349] [2020-01-16 18:42:26,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:27,081 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2020-01-16 18:42:27,206 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:27,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84428349] [2020-01-16 18:42:27,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:27,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:27,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361079794] [2020-01-16 18:42:27,214 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:27,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:27,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:27,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:27,214 INFO L87 Difference]: Start difference. First operand 1574 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:42:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:27,409 INFO L93 Difference]: Finished difference Result 2960 states and 11735 transitions. [2020-01-16 18:42:27,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:27,410 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:27,417 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 18:42:27,417 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:42:27,417 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 18:42:27,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:42:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1580. [2020-01-16 18:42:27,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:42:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7074 transitions. [2020-01-16 18:42:27,483 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7074 transitions. Word has length 28 [2020-01-16 18:42:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:27,483 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7074 transitions. [2020-01-16 18:42:27,483 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:27,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7074 transitions. [2020-01-16 18:42:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:27,486 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:27,486 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 18:42:27,486 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 18:42:27,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:27,486 INFO L82 PathProgramCache]: Analyzing trace with hash 115021990, now seen corresponding path program 756 times [2020-01-16 18:42:27,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:27,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45003070] [2020-01-16 18:42:27,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:28,094 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:28,101 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 18:42:28,101 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45003070] [2020-01-16 18:42:28,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:28,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:28,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631814668] [2020-01-16 18:42:28,102 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:28,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:28,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:28,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:28,102 INFO L87 Difference]: Start difference. First operand 1580 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:42:28,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:28,299 INFO L93 Difference]: Finished difference Result 2961 states and 11731 transitions. [2020-01-16 18:42:28,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:28,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:28,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:28,306 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:42:28,306 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:42:28,307 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 18:42:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:42:28,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1569. [2020-01-16 18:42:28,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:42:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7049 transitions. [2020-01-16 18:42:28,373 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7049 transitions. Word has length 28 [2020-01-16 18:42:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:28,373 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7049 transitions. [2020-01-16 18:42:28,373 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7049 transitions. [2020-01-16 18:42:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:28,375 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:28,375 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 18:42:28,375 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 18:42:28,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:28,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1539753370, now seen corresponding path program 757 times [2020-01-16 18:42:28,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:28,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107860068] [2020-01-16 18:42:28,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:28,843 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-01-16 18:42:28,971 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:42:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:28,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107860068] [2020-01-16 18:42:28,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:28,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:28,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78823928] [2020-01-16 18:42:28,977 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:28,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:28,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:28,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:28,978 INFO L87 Difference]: Start difference. First operand 1569 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:42:29,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:29,170 INFO L93 Difference]: Finished difference Result 2969 states and 11757 transitions. [2020-01-16 18:42:29,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:29,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:29,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:29,178 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 18:42:29,178 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:42:29,178 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 18:42:29,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:42:29,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1581. [2020-01-16 18:42:29,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:42:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7082 transitions. [2020-01-16 18:42:29,244 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7082 transitions. Word has length 28 [2020-01-16 18:42:29,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:29,244 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7082 transitions. [2020-01-16 18:42:29,244 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:29,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7082 transitions. [2020-01-16 18:42:29,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:29,246 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:29,246 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 18:42:29,246 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 18:42:29,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:29,247 INFO L82 PathProgramCache]: Analyzing trace with hash -50348374, now seen corresponding path program 758 times [2020-01-16 18:42:29,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:29,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922615610] [2020-01-16 18:42:29,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:29,725 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29 [2020-01-16 18:42:29,852 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:42:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:29,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922615610] [2020-01-16 18:42:29,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:29,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:29,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786641591] [2020-01-16 18:42:29,859 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:29,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:29,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:29,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:29,860 INFO L87 Difference]: Start difference. First operand 1581 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:42:30,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:30,014 INFO L93 Difference]: Finished difference Result 2974 states and 11761 transitions. [2020-01-16 18:42:30,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:30,014 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:30,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:30,021 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:42:30,021 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:42:30,021 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 18:42:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:42:30,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1575. [2020-01-16 18:42:30,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:42:30,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7065 transitions. [2020-01-16 18:42:30,089 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7065 transitions. Word has length 28 [2020-01-16 18:42:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:30,089 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7065 transitions. [2020-01-16 18:42:30,089 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7065 transitions. [2020-01-16 18:42:30,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:30,091 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:30,091 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 18:42:30,091 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 18:42:30,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:30,092 INFO L82 PathProgramCache]: Analyzing trace with hash -464042214, now seen corresponding path program 759 times [2020-01-16 18:42:30,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:30,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383361540] [2020-01-16 18:42:30,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:30,465 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2020-01-16 18:42:30,707 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:42:30,715 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 18:42:30,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383361540] [2020-01-16 18:42:30,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:30,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:30,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810895621] [2020-01-16 18:42:30,715 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:30,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:30,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:30,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:30,716 INFO L87 Difference]: Start difference. First operand 1575 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:42:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:30,906 INFO L93 Difference]: Finished difference Result 2965 states and 11744 transitions. [2020-01-16 18:42:30,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:30,906 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:30,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:30,914 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:42:30,914 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:42:30,914 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 18:42:30,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:42:30,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1580. [2020-01-16 18:42:30,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:42:30,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7074 transitions. [2020-01-16 18:42:30,981 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7074 transitions. Word has length 28 [2020-01-16 18:42:30,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:30,981 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7074 transitions. [2020-01-16 18:42:30,981 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7074 transitions. [2020-01-16 18:42:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:30,983 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:30,983 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:30,983 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 18:42:30,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:30,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1198610474, now seen corresponding path program 760 times [2020-01-16 18:42:30,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:30,984 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875710853] [2020-01-16 18:42:30,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:31,576 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:42:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:31,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875710853] [2020-01-16 18:42:31,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:31,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:31,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079898270] [2020-01-16 18:42:31,584 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:31,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:31,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:31,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:31,585 INFO L87 Difference]: Start difference. First operand 1580 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:42:31,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:31,831 INFO L93 Difference]: Finished difference Result 2967 states and 11743 transitions. [2020-01-16 18:42:31,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:31,832 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:31,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:31,839 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:42:31,839 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:42:31,839 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 18:42:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:42:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1575. [2020-01-16 18:42:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:42:31,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7060 transitions. [2020-01-16 18:42:31,907 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7060 transitions. Word has length 28 [2020-01-16 18:42:31,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:31,907 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7060 transitions. [2020-01-16 18:42:31,907 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7060 transitions. [2020-01-16 18:42:31,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:31,909 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:31,910 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:31,910 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 18:42:31,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:31,910 INFO L82 PathProgramCache]: Analyzing trace with hash -47722598, now seen corresponding path program 761 times [2020-01-16 18:42:31,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:31,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960763393] [2020-01-16 18:42:31,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:32,385 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29 [2020-01-16 18:42:32,508 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:42:32,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:32,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960763393] [2020-01-16 18:42:32,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:32,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:32,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932754676] [2020-01-16 18:42:32,515 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:32,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:32,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:32,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:32,516 INFO L87 Difference]: Start difference. First operand 1575 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:42:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:32,684 INFO L93 Difference]: Finished difference Result 2978 states and 11765 transitions. [2020-01-16 18:42:32,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:32,684 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:32,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:32,691 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:42:32,691 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:42:32,691 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 18:42:32,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:42:32,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1583. [2020-01-16 18:42:32,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:42:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7074 transitions. [2020-01-16 18:42:32,758 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7074 transitions. Word has length 28 [2020-01-16 18:42:32,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:32,759 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7074 transitions. [2020-01-16 18:42:32,759 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:32,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7074 transitions. [2020-01-16 18:42:32,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:32,761 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:32,761 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:32,761 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 18:42:32,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:32,761 INFO L82 PathProgramCache]: Analyzing trace with hash 125525094, now seen corresponding path program 762 times [2020-01-16 18:42:32,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:32,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285462973] [2020-01-16 18:42:32,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:33,348 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:42:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:33,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285462973] [2020-01-16 18:42:33,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:33,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:33,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157532006] [2020-01-16 18:42:33,356 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:33,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:33,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:33,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:33,357 INFO L87 Difference]: Start difference. First operand 1583 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:42:33,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:33,570 INFO L93 Difference]: Finished difference Result 2975 states and 11752 transitions. [2020-01-16 18:42:33,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:33,571 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:33,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:33,577 INFO L225 Difference]: With dead ends: 2975 [2020-01-16 18:42:33,578 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:42:33,578 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 18:42:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:42:33,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1569. [2020-01-16 18:42:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:42:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7043 transitions. [2020-01-16 18:42:33,645 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7043 transitions. Word has length 28 [2020-01-16 18:42:33,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:33,645 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7043 transitions. [2020-01-16 18:42:33,645 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7043 transitions. [2020-01-16 18:42:33,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:33,648 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:33,648 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 18:42:33,648 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 18:42:33,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:33,648 INFO L82 PathProgramCache]: Analyzing trace with hash -784547768, now seen corresponding path program 763 times [2020-01-16 18:42:33,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:33,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49926786] [2020-01-16 18:42:33,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:34,236 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:34,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49926786] [2020-01-16 18:42:34,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:34,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:34,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238241491] [2020-01-16 18:42:34,243 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:34,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:34,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:34,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:34,244 INFO L87 Difference]: Start difference. First operand 1569 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:42:34,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:34,435 INFO L93 Difference]: Finished difference Result 2976 states and 11770 transitions. [2020-01-16 18:42:34,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:34,435 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:34,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:34,443 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:42:34,443 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:42:34,443 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 18:42:34,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:42:34,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1583. [2020-01-16 18:42:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:42:34,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7082 transitions. [2020-01-16 18:42:34,509 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7082 transitions. Word has length 28 [2020-01-16 18:42:34,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:34,509 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7082 transitions. [2020-01-16 18:42:34,509 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:34,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7082 transitions. [2020-01-16 18:42:34,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:34,511 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:34,511 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 18:42:34,511 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 18:42:34,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:34,511 INFO L82 PathProgramCache]: Analyzing trace with hash -39845270, now seen corresponding path program 764 times [2020-01-16 18:42:34,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:34,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907664683] [2020-01-16 18:42:34,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:34,998 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:42:35,124 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:35,130 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 18:42:35,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907664683] [2020-01-16 18:42:35,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:35,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:35,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187238126] [2020-01-16 18:42:35,130 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:35,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:35,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:35,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:35,131 INFO L87 Difference]: Start difference. First operand 1583 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:42:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:35,293 INFO L93 Difference]: Finished difference Result 2980 states and 11771 transitions. [2020-01-16 18:42:35,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:35,294 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:35,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:35,301 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:42:35,302 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:42:35,302 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 18:42:35,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:42:35,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1576. [2020-01-16 18:42:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:42:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7062 transitions. [2020-01-16 18:42:35,368 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7062 transitions. Word has length 28 [2020-01-16 18:42:35,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:35,368 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7062 transitions. [2020-01-16 18:42:35,368 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7062 transitions. [2020-01-16 18:42:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:35,370 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:35,370 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 18:42:35,370 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 18:42:35,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:35,370 INFO L82 PathProgramCache]: Analyzing trace with hash 291163388, now seen corresponding path program 765 times [2020-01-16 18:42:35,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:35,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386923291] [2020-01-16 18:42:35,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:35,846 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2020-01-16 18:42:35,975 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:35,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386923291] [2020-01-16 18:42:35,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:35,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:35,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20323804] [2020-01-16 18:42:35,982 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:35,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:35,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:35,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:35,983 INFO L87 Difference]: Start difference. First operand 1576 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:42:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:36,192 INFO L93 Difference]: Finished difference Result 2972 states and 11756 transitions. [2020-01-16 18:42:36,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:36,192 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:36,199 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:42:36,199 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:42:36,199 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 18:42:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:42:36,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1582. [2020-01-16 18:42:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:42:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7073 transitions. [2020-01-16 18:42:36,265 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7073 transitions. Word has length 28 [2020-01-16 18:42:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:36,265 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7073 transitions. [2020-01-16 18:42:36,265 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7073 transitions. [2020-01-16 18:42:36,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:36,267 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:36,267 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 18:42:36,267 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 18:42:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:36,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1209113578, now seen corresponding path program 766 times [2020-01-16 18:42:36,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:36,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055859029] [2020-01-16 18:42:36,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:36,868 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:36,875 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 18:42:36,875 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055859029] [2020-01-16 18:42:36,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:36,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:36,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91213176] [2020-01-16 18:42:36,875 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:36,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:36,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:36,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:36,876 INFO L87 Difference]: Start difference. First operand 1582 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:42:37,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:37,115 INFO L93 Difference]: Finished difference Result 2973 states and 11752 transitions. [2020-01-16 18:42:37,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:37,116 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:37,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:37,123 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:42:37,123 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:42:37,123 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 18:42:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:42:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1576. [2020-01-16 18:42:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:42:37,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7056 transitions. [2020-01-16 18:42:37,213 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7056 transitions. Word has length 28 [2020-01-16 18:42:37,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:37,213 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7056 transitions. [2020-01-16 18:42:37,213 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:37,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7056 transitions. [2020-01-16 18:42:37,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:37,215 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:37,215 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:37,215 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 18:42:37,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:37,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1648160452, now seen corresponding path program 767 times [2020-01-16 18:42:37,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:37,216 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948472971] [2020-01-16 18:42:37,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:37,701 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:42:37,827 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:37,834 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 18:42:37,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948472971] [2020-01-16 18:42:37,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:37,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:37,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459794396] [2020-01-16 18:42:37,835 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:37,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:37,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:37,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:37,835 INFO L87 Difference]: Start difference. First operand 1576 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:42:38,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:38,004 INFO L93 Difference]: Finished difference Result 2982 states and 11769 transitions. [2020-01-16 18:42:38,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:38,004 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:38,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:38,011 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:42:38,012 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:42:38,012 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 18:42:38,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:42:38,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1584. [2020-01-16 18:42:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:42:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7070 transitions. [2020-01-16 18:42:38,078 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7070 transitions. Word has length 28 [2020-01-16 18:42:38,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:38,078 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7070 transitions. [2020-01-16 18:42:38,078 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:38,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7070 transitions. [2020-01-16 18:42:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:38,080 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:38,080 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 18:42:38,080 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 18:42:38,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:38,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1474912760, now seen corresponding path program 768 times [2020-01-16 18:42:38,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:38,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654946187] [2020-01-16 18:42:38,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:38,675 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:38,681 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 18:42:38,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654946187] [2020-01-16 18:42:38,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:38,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:38,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084115515] [2020-01-16 18:42:38,682 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:38,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:38,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:38,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:38,683 INFO L87 Difference]: Start difference. First operand 1584 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:42:38,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:38,887 INFO L93 Difference]: Finished difference Result 2979 states and 11756 transitions. [2020-01-16 18:42:38,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:38,887 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:38,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:38,895 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:42:38,895 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:42:38,895 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 18:42:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:42:38,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1563. [2020-01-16 18:42:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:42:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7026 transitions. [2020-01-16 18:42:38,961 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7026 transitions. Word has length 28 [2020-01-16 18:42:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:38,961 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7026 transitions. [2020-01-16 18:42:38,961 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7026 transitions. [2020-01-16 18:42:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:38,963 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:38,963 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:38,963 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 18:42:38,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:38,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1292451582, now seen corresponding path program 769 times [2020-01-16 18:42:38,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:38,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943010364] [2020-01-16 18:42:38,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:39,431 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:42:39,558 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:39,565 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 18:42:39,565 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943010364] [2020-01-16 18:42:39,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:39,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:39,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258672796] [2020-01-16 18:42:39,565 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:39,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:39,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:39,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:39,566 INFO L87 Difference]: Start difference. First operand 1563 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:42:39,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:39,853 INFO L93 Difference]: Finished difference Result 2948 states and 11716 transitions. [2020-01-16 18:42:39,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:39,854 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:39,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:39,861 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:42:39,862 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:42:39,862 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 18:42:39,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:42:39,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1578. [2020-01-16 18:42:39,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:42:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7078 transitions. [2020-01-16 18:42:39,927 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7078 transitions. Word has length 28 [2020-01-16 18:42:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:39,928 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7078 transitions. [2020-01-16 18:42:39,928 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7078 transitions. [2020-01-16 18:42:39,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:39,930 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:39,930 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 18:42:39,930 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 18:42:39,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:39,930 INFO L82 PathProgramCache]: Analyzing trace with hash -547749084, now seen corresponding path program 770 times [2020-01-16 18:42:39,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:39,930 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026423189] [2020-01-16 18:42:39,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:40,529 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:40,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026423189] [2020-01-16 18:42:40,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:40,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:40,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324146945] [2020-01-16 18:42:40,536 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:40,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:40,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:40,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:40,537 INFO L87 Difference]: Start difference. First operand 1578 states and 7078 transitions. Second operand 11 states. [2020-01-16 18:42:40,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:40,746 INFO L93 Difference]: Finished difference Result 2949 states and 11713 transitions. [2020-01-16 18:42:40,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:40,747 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:40,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:40,754 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 18:42:40,754 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:42:40,754 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 18:42:40,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:42:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1573. [2020-01-16 18:42:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:42:40,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7064 transitions. [2020-01-16 18:42:40,819 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7064 transitions. Word has length 28 [2020-01-16 18:42:40,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:40,819 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7064 transitions. [2020-01-16 18:42:40,819 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:40,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7064 transitions. [2020-01-16 18:42:40,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:40,822 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:40,822 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:40,822 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 18:42:40,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:40,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1929430334, now seen corresponding path program 771 times [2020-01-16 18:42:40,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:40,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262551522] [2020-01-16 18:42:40,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:41,285 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:42:41,412 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:41,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:41,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262551522] [2020-01-16 18:42:41,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:41,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:41,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897358914] [2020-01-16 18:42:41,420 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:41,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:41,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:41,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:41,420 INFO L87 Difference]: Start difference. First operand 1573 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:42:41,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:41,673 INFO L93 Difference]: Finished difference Result 2950 states and 11715 transitions. [2020-01-16 18:42:41,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:41,673 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:41,681 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:42:41,681 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:42:41,681 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 18:42:41,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:42:41,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1578. [2020-01-16 18:42:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:42:41,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7073 transitions. [2020-01-16 18:42:41,747 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7073 transitions. Word has length 28 [2020-01-16 18:42:41,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:41,747 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7073 transitions. [2020-01-16 18:42:41,747 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:41,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7073 transitions. [2020-01-16 18:42:41,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:41,749 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:41,749 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 18:42:41,749 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 18:42:41,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:41,749 INFO L82 PathProgramCache]: Analyzing trace with hash -131429468, now seen corresponding path program 772 times [2020-01-16 18:42:41,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:41,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465824847] [2020-01-16 18:42:41,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:42,343 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:42,350 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465824847] [2020-01-16 18:42:42,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:42,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:42,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616862115] [2020-01-16 18:42:42,350 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:42,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:42,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:42,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:42,351 INFO L87 Difference]: Start difference. First operand 1578 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:42:42,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:42,571 INFO L93 Difference]: Finished difference Result 2953 states and 11716 transitions. [2020-01-16 18:42:42,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:42,571 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:42,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:42,578 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:42:42,578 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:42:42,578 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 18:42:42,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:42:42,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1573. [2020-01-16 18:42:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:42:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7059 transitions. [2020-01-16 18:42:42,644 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7059 transitions. Word has length 28 [2020-01-16 18:42:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:42,644 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7059 transitions. [2020-01-16 18:42:42,644 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7059 transitions. [2020-01-16 18:42:42,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:42,647 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:42,647 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:42,647 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 18:42:42,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:42,647 INFO L82 PathProgramCache]: Analyzing trace with hash -9893506, now seen corresponding path program 773 times [2020-01-16 18:42:42,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:42,647 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368609728] [2020-01-16 18:42:42,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:43,120 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:42:43,251 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:43,258 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368609728] [2020-01-16 18:42:43,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:43,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:43,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767217984] [2020-01-16 18:42:43,259 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:43,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:43,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:43,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:43,259 INFO L87 Difference]: Start difference. First operand 1573 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:42:43,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:43,478 INFO L93 Difference]: Finished difference Result 2953 states and 11717 transitions. [2020-01-16 18:42:43,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:43,478 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:43,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:43,485 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:42:43,485 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:42:43,485 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 18:42:43,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:42:43,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1579. [2020-01-16 18:42:43,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:42:43,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7070 transitions. [2020-01-16 18:42:43,551 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7070 transitions. Word has length 28 [2020-01-16 18:42:43,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:43,551 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7070 transitions. [2020-01-16 18:42:43,551 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:43,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7070 transitions. [2020-01-16 18:42:43,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:43,553 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:43,553 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:43,553 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 18:42:43,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:43,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1479511490, now seen corresponding path program 774 times [2020-01-16 18:42:43,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:43,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323005947] [2020-01-16 18:42:43,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:44,039 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:42:44,167 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:44,174 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323005947] [2020-01-16 18:42:44,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:44,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:44,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869164863] [2020-01-16 18:42:44,175 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:44,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:44,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:44,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:44,175 INFO L87 Difference]: Start difference. First operand 1579 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:42:44,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:44,375 INFO L93 Difference]: Finished difference Result 2955 states and 11715 transitions. [2020-01-16 18:42:44,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:44,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:44,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:44,383 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:42:44,384 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:42:44,384 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 18:42:44,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:42:44,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1568. [2020-01-16 18:42:44,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:42:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7045 transitions. [2020-01-16 18:42:44,450 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7045 transitions. Word has length 28 [2020-01-16 18:42:44,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:44,451 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7045 transitions. [2020-01-16 18:42:44,451 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7045 transitions. [2020-01-16 18:42:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:44,453 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:44,453 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 18:42:44,453 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 18:42:44,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:44,453 INFO L82 PathProgramCache]: Analyzing trace with hash -704706260, now seen corresponding path program 775 times [2020-01-16 18:42:44,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:44,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496070795] [2020-01-16 18:42:44,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:45,047 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:42:45,054 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 18:42:45,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496070795] [2020-01-16 18:42:45,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:45,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:45,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392899063] [2020-01-16 18:42:45,055 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:45,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:45,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:45,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:45,055 INFO L87 Difference]: Start difference. First operand 1568 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:42:45,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:45,249 INFO L93 Difference]: Finished difference Result 2947 states and 11709 transitions. [2020-01-16 18:42:45,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:45,250 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:45,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:45,257 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:42:45,257 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:42:45,257 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 18:42:45,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:42:45,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1578. [2020-01-16 18:42:45,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:42:45,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7073 transitions. [2020-01-16 18:42:45,324 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7073 transitions. Word has length 28 [2020-01-16 18:42:45,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:45,324 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7073 transitions. [2020-01-16 18:42:45,324 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:45,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7073 transitions. [2020-01-16 18:42:45,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:45,326 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:45,326 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 18:42:45,326 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 18:42:45,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:45,327 INFO L82 PathProgramCache]: Analyzing trace with hash 39996238, now seen corresponding path program 776 times [2020-01-16 18:42:45,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:45,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670634867] [2020-01-16 18:42:45,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:45,940 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:42:45,948 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 18:42:45,948 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670634867] [2020-01-16 18:42:45,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:45,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:45,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880772961] [2020-01-16 18:42:45,948 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:45,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:45,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:45,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:45,949 INFO L87 Difference]: Start difference. First operand 1578 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:42:46,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:46,150 INFO L93 Difference]: Finished difference Result 2948 states and 11706 transitions. [2020-01-16 18:42:46,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:46,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:46,158 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:42:46,158 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 18:42:46,158 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 18:42:46,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 18:42:46,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1573. [2020-01-16 18:42:46,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:42:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7059 transitions. [2020-01-16 18:42:46,226 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7059 transitions. Word has length 28 [2020-01-16 18:42:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:46,226 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7059 transitions. [2020-01-16 18:42:46,226 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7059 transitions. [2020-01-16 18:42:46,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:46,228 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:46,228 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 18:42:46,229 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 18:42:46,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:46,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1981945854, now seen corresponding path program 777 times [2020-01-16 18:42:46,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:46,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192603461] [2020-01-16 18:42:46,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:46,827 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:46,834 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 18:42:46,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192603461] [2020-01-16 18:42:46,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:46,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:46,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044411415] [2020-01-16 18:42:46,834 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:46,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:46,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:46,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:46,835 INFO L87 Difference]: Start difference. First operand 1573 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:42:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:47,034 INFO L93 Difference]: Finished difference Result 2948 states and 11706 transitions. [2020-01-16 18:42:47,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:47,034 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:47,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:47,041 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:42:47,041 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:42:47,041 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 18:42:47,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:42:47,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1578. [2020-01-16 18:42:47,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:42:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7068 transitions. [2020-01-16 18:42:47,109 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7068 transitions. Word has length 28 [2020-01-16 18:42:47,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:47,109 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7068 transitions. [2020-01-16 18:42:47,109 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:47,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7068 transitions. [2020-01-16 18:42:47,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:47,111 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:47,111 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 18:42:47,112 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 18:42:47,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:47,112 INFO L82 PathProgramCache]: Analyzing trace with hash -650368754, now seen corresponding path program 778 times [2020-01-16 18:42:47,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:47,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718658719] [2020-01-16 18:42:47,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:47,708 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:47,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718658719] [2020-01-16 18:42:47,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:47,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:47,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204910607] [2020-01-16 18:42:47,715 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:47,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:47,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:47,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:47,715 INFO L87 Difference]: Start difference. First operand 1578 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:42:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:47,915 INFO L93 Difference]: Finished difference Result 2950 states and 11705 transitions. [2020-01-16 18:42:47,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:47,915 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:47,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:47,923 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:42:47,923 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:42:47,923 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 18:42:47,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:42:47,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1573. [2020-01-16 18:42:47,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:42:47,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7054 transitions. [2020-01-16 18:42:47,990 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7054 transitions. Word has length 28 [2020-01-16 18:42:47,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:47,990 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7054 transitions. [2020-01-16 18:42:47,990 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:47,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7054 transitions. [2020-01-16 18:42:47,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:47,992 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:47,993 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:47,993 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 18:42:47,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:47,993 INFO L82 PathProgramCache]: Analyzing trace with hash 42622014, now seen corresponding path program 779 times [2020-01-16 18:42:47,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:47,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832589384] [2020-01-16 18:42:47,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:48,468 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-01-16 18:42:48,596 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:42:48,602 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 18:42:48,602 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832589384] [2020-01-16 18:42:48,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:48,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:48,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668125807] [2020-01-16 18:42:48,603 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:48,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:48,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:48,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:48,603 INFO L87 Difference]: Start difference. First operand 1573 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:42:48,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:48,830 INFO L93 Difference]: Finished difference Result 2951 states and 11708 transitions. [2020-01-16 18:42:48,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:48,831 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:48,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:48,838 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:42:48,838 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:42:48,839 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 18:42:48,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:42:48,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1579. [2020-01-16 18:42:48,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:42:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7065 transitions. [2020-01-16 18:42:48,904 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7065 transitions. Word has length 28 [2020-01-16 18:42:48,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:48,905 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7065 transitions. [2020-01-16 18:42:48,905 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:48,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7065 transitions. [2020-01-16 18:42:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:48,907 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:48,907 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 18:42:48,907 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 18:42:48,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:48,907 INFO L82 PathProgramCache]: Analyzing trace with hash 960572204, now seen corresponding path program 780 times [2020-01-16 18:42:48,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:48,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576399525] [2020-01-16 18:42:48,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:49,510 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:42:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:49,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576399525] [2020-01-16 18:42:49,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:49,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:49,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743496143] [2020-01-16 18:42:49,517 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:49,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:49,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:49,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:49,518 INFO L87 Difference]: Start difference. First operand 1579 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:42:49,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:49,711 INFO L93 Difference]: Finished difference Result 2952 states and 11704 transitions. [2020-01-16 18:42:49,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:49,711 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:49,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:49,719 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:42:49,719 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:42:49,719 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:42:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:42:49,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1568. [2020-01-16 18:42:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:42:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7040 transitions. [2020-01-16 18:42:49,786 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7040 transitions. Word has length 28 [2020-01-16 18:42:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:49,786 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7040 transitions. [2020-01-16 18:42:49,787 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:49,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7040 transitions. [2020-01-16 18:42:49,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:49,789 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:49,789 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 18:42:49,789 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 18:42:49,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:49,789 INFO L82 PathProgramCache]: Analyzing trace with hash -683700052, now seen corresponding path program 781 times [2020-01-16 18:42:49,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:49,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018150869] [2020-01-16 18:42:49,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:50,256 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:42:50,383 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:50,389 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 18:42:50,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018150869] [2020-01-16 18:42:50,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:50,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:50,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880901274] [2020-01-16 18:42:50,390 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:50,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:50,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:50,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:50,390 INFO L87 Difference]: Start difference. First operand 1568 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:42:50,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:50,586 INFO L93 Difference]: Finished difference Result 2952 states and 11715 transitions. [2020-01-16 18:42:50,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:50,587 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:50,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:50,594 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:42:50,594 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:42:50,594 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 18:42:50,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:42:50,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1578. [2020-01-16 18:42:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:42:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7068 transitions. [2020-01-16 18:42:50,688 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7068 transitions. Word has length 28 [2020-01-16 18:42:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:50,688 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7068 transitions. [2020-01-16 18:42:50,688 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7068 transitions. [2020-01-16 18:42:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:50,690 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:50,690 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 18:42:50,690 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 18:42:50,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:50,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1550407442, now seen corresponding path program 782 times [2020-01-16 18:42:50,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:50,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609511269] [2020-01-16 18:42:50,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:51,161 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2020-01-16 18:42:51,290 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:51,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609511269] [2020-01-16 18:42:51,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:51,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:51,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364522008] [2020-01-16 18:42:51,298 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:51,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:51,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:51,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:51,299 INFO L87 Difference]: Start difference. First operand 1578 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:42:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:51,492 INFO L93 Difference]: Finished difference Result 2955 states and 11716 transitions. [2020-01-16 18:42:51,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:51,492 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:51,499 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:42:51,500 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:42:51,500 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:42:51,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:42:51,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1573. [2020-01-16 18:42:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:42:51,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7054 transitions. [2020-01-16 18:42:51,566 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7054 transitions. Word has length 28 [2020-01-16 18:42:51,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:51,567 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7054 transitions. [2020-01-16 18:42:51,567 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:51,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7054 transitions. [2020-01-16 18:42:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:51,569 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:51,569 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:51,569 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 18:42:51,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:51,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1218929854, now seen corresponding path program 783 times [2020-01-16 18:42:51,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:51,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039169005] [2020-01-16 18:42:51,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:52,028 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-01-16 18:42:52,155 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:52,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039169005] [2020-01-16 18:42:52,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:52,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:52,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691677687] [2020-01-16 18:42:52,162 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:52,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:52,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:52,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:52,163 INFO L87 Difference]: Start difference. First operand 1573 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:42:52,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:52,344 INFO L93 Difference]: Finished difference Result 2951 states and 11708 transitions. [2020-01-16 18:42:52,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:52,344 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:52,352 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:42:52,352 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:42:52,352 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 18:42:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:42:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1578. [2020-01-16 18:42:52,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:42:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7063 transitions. [2020-01-16 18:42:52,418 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7063 transitions. Word has length 28 [2020-01-16 18:42:52,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:52,418 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7063 transitions. [2020-01-16 18:42:52,418 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:52,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7063 transitions. [2020-01-16 18:42:52,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:52,420 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:52,420 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:52,420 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 18:42:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:52,421 INFO L82 PathProgramCache]: Analyzing trace with hash 443722834, now seen corresponding path program 784 times [2020-01-16 18:42:52,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:52,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491586997] [2020-01-16 18:42:52,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:53,009 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:53,016 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 18:42:53,016 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491586997] [2020-01-16 18:42:53,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:53,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:53,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109225396] [2020-01-16 18:42:53,016 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:53,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:53,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:53,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:53,017 INFO L87 Difference]: Start difference. First operand 1578 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:42:53,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:53,224 INFO L93 Difference]: Finished difference Result 2953 states and 11707 transitions. [2020-01-16 18:42:53,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:53,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:53,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:53,232 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:42:53,232 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 18:42:53,232 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 18:42:53,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 18:42:53,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1573. [2020-01-16 18:42:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:42:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7049 transitions. [2020-01-16 18:42:53,297 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7049 transitions. Word has length 28 [2020-01-16 18:42:53,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:53,298 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7049 transitions. [2020-01-16 18:42:53,298 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7049 transitions. [2020-01-16 18:42:53,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:53,300 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:53,300 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:53,300 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 18:42:53,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:53,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1553033218, now seen corresponding path program 785 times [2020-01-16 18:42:53,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:53,300 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387361707] [2020-01-16 18:42:53,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:53,894 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:53,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387361707] [2020-01-16 18:42:53,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:53,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:53,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640285218] [2020-01-16 18:42:53,901 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:53,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:53,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:53,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:53,902 INFO L87 Difference]: Start difference. First operand 1573 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:42:54,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:54,136 INFO L93 Difference]: Finished difference Result 2959 states and 11721 transitions. [2020-01-16 18:42:54,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:54,136 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:54,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:54,144 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:42:54,144 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:42:54,144 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 18:42:54,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:42:54,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1580. [2020-01-16 18:42:54,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:42:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7062 transitions. [2020-01-16 18:42:54,210 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7062 transitions. Word has length 28 [2020-01-16 18:42:54,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:54,210 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7062 transitions. [2020-01-16 18:42:54,210 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:54,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7062 transitions. [2020-01-16 18:42:54,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:54,212 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:54,212 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 18:42:54,212 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 18:42:54,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:54,213 INFO L82 PathProgramCache]: Analyzing trace with hash 981578412, now seen corresponding path program 786 times [2020-01-16 18:42:54,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:54,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638403365] [2020-01-16 18:42:54,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:54,802 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:42:54,809 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 18:42:54,809 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638403365] [2020-01-16 18:42:54,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:54,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:54,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201732130] [2020-01-16 18:42:54,810 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:54,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:54,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:54,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:54,810 INFO L87 Difference]: Start difference. First operand 1580 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:42:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:55,044 INFO L93 Difference]: Finished difference Result 2958 states and 11712 transitions. [2020-01-16 18:42:55,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:55,044 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:55,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:55,052 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:42:55,052 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 18:42:55,053 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 18:42:55,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 18:42:55,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1568. [2020-01-16 18:42:55,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:42:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7035 transitions. [2020-01-16 18:42:55,120 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7035 transitions. Word has length 28 [2020-01-16 18:42:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:55,120 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7035 transitions. [2020-01-16 18:42:55,120 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:55,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7035 transitions. [2020-01-16 18:42:55,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:55,122 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:55,122 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 18:42:55,123 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 18:42:55,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:55,123 INFO L82 PathProgramCache]: Analyzing trace with hash 71505550, now seen corresponding path program 787 times [2020-01-16 18:42:55,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:55,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951826629] [2020-01-16 18:42:55,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:55,596 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:42:55,725 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:55,732 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 18:42:55,733 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951826629] [2020-01-16 18:42:55,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:55,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:55,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339567038] [2020-01-16 18:42:55,733 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:55,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:55,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:55,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:55,733 INFO L87 Difference]: Start difference. First operand 1568 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:42:55,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:55,994 INFO L93 Difference]: Finished difference Result 2959 states and 11729 transitions. [2020-01-16 18:42:55,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:55,994 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:55,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:56,002 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:42:56,002 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 18:42:56,002 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 18:42:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 18:42:56,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1580. [2020-01-16 18:42:56,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:42:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7069 transitions. [2020-01-16 18:42:56,067 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7069 transitions. Word has length 28 [2020-01-16 18:42:56,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:56,068 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7069 transitions. [2020-01-16 18:42:56,068 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7069 transitions. [2020-01-16 18:42:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:56,070 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:56,070 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:42:56,070 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 18:42:56,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:56,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1560910546, now seen corresponding path program 788 times [2020-01-16 18:42:56,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:56,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990444060] [2020-01-16 18:42:56,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:56,548 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:42:56,677 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:42:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:56,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990444060] [2020-01-16 18:42:56,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:56,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:56,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651935162] [2020-01-16 18:42:56,685 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:56,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:56,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:56,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:56,686 INFO L87 Difference]: Start difference. First operand 1580 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:42:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:56,940 INFO L93 Difference]: Finished difference Result 2961 states and 11727 transitions. [2020-01-16 18:42:56,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:56,941 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:56,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:56,948 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:42:56,948 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:42:56,948 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 18:42:56,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:42:57,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1574. [2020-01-16 18:42:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:42:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7052 transitions. [2020-01-16 18:42:57,014 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7052 transitions. Word has length 28 [2020-01-16 18:42:57,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:57,014 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7052 transitions. [2020-01-16 18:42:57,014 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:57,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7052 transitions. [2020-01-16 18:42:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:57,016 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:57,016 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 18:42:57,016 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 18:42:57,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:57,017 INFO L82 PathProgramCache]: Analyzing trace with hash -463724252, now seen corresponding path program 789 times [2020-01-16 18:42:57,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:57,017 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914606738] [2020-01-16 18:42:57,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:57,636 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:42:57,643 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 18:42:57,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914606738] [2020-01-16 18:42:57,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:57,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:57,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245587719] [2020-01-16 18:42:57,643 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:57,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:57,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:57,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:57,644 INFO L87 Difference]: Start difference. First operand 1574 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:42:57,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:57,854 INFO L93 Difference]: Finished difference Result 2958 states and 11721 transitions. [2020-01-16 18:42:57,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:57,854 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:57,861 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:42:57,861 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:42:57,861 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 18:42:57,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:42:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1580. [2020-01-16 18:42:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:42:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7063 transitions. [2020-01-16 18:42:57,928 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7063 transitions. Word has length 28 [2020-01-16 18:42:57,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:57,928 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7063 transitions. [2020-01-16 18:42:57,928 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:57,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7063 transitions. [2020-01-16 18:42:57,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:57,931 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:57,931 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 18:42:57,931 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 18:42:57,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:57,931 INFO L82 PathProgramCache]: Analyzing trace with hash 454225938, now seen corresponding path program 790 times [2020-01-16 18:42:57,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:57,931 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668322379] [2020-01-16 18:42:57,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:58,529 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:42:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:42:58,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668322379] [2020-01-16 18:42:58,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:58,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:58,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235261200] [2020-01-16 18:42:58,537 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:58,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:58,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:58,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:58,537 INFO L87 Difference]: Start difference. First operand 1580 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:42:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:58,767 INFO L93 Difference]: Finished difference Result 2959 states and 11717 transitions. [2020-01-16 18:42:58,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:58,767 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:58,774 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:42:58,774 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:42:58,774 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 18:42:58,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:42:58,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1574. [2020-01-16 18:42:58,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:42:58,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7046 transitions. [2020-01-16 18:42:58,841 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7046 transitions. Word has length 28 [2020-01-16 18:42:58,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:58,841 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7046 transitions. [2020-01-16 18:42:58,841 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:58,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7046 transitions. [2020-01-16 18:42:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:58,843 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:58,843 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 18:42:58,843 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 18:42:58,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:58,843 INFO L82 PathProgramCache]: Analyzing trace with hash -47404636, now seen corresponding path program 791 times [2020-01-16 18:42:58,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:58,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516392830] [2020-01-16 18:42:58,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:42:59,445 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:42:59,452 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 18:42:59,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516392830] [2020-01-16 18:42:59,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:42:59,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:42:59,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341851216] [2020-01-16 18:42:59,452 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:42:59,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:42:59,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:42:59,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:42:59,453 INFO L87 Difference]: Start difference. First operand 1574 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:42:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:42:59,645 INFO L93 Difference]: Finished difference Result 2963 states and 11726 transitions. [2020-01-16 18:42:59,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:42:59,646 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:42:59,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:42:59,653 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:42:59,654 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:42:59,654 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 18:42:59,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:42:59,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1581. [2020-01-16 18:42:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:42:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7059 transitions. [2020-01-16 18:42:59,719 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7059 transitions. Word has length 28 [2020-01-16 18:42:59,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:42:59,720 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7059 transitions. [2020-01-16 18:42:59,720 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:42:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7059 transitions. [2020-01-16 18:42:59,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:42:59,722 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:42:59,722 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 18:42:59,722 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 18:42:59,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:42:59,722 INFO L82 PathProgramCache]: Analyzing trace with hash -618859442, now seen corresponding path program 792 times [2020-01-16 18:42:59,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:42:59,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084543766] [2020-01-16 18:42:59,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:42:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:00,191 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:43:00,317 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:43:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:00,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084543766] [2020-01-16 18:43:00,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:00,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:00,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560647075] [2020-01-16 18:43:00,325 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:00,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:00,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:00,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:00,325 INFO L87 Difference]: Start difference. First operand 1581 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:43:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:00,571 INFO L93 Difference]: Finished difference Result 2962 states and 11717 transitions. [2020-01-16 18:43:00,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:00,572 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:00,579 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:43:00,580 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 18:43:00,580 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 18:43:00,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 18:43:00,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1563. [2020-01-16 18:43:00,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:43:00,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7021 transitions. [2020-01-16 18:43:00,645 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7021 transitions. Word has length 28 [2020-01-16 18:43:00,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:00,646 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7021 transitions. [2020-01-16 18:43:00,646 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:00,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7021 transitions. [2020-01-16 18:43:00,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:00,648 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:00,648 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 18:43:00,648 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 18:43:00,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:00,648 INFO L82 PathProgramCache]: Analyzing trace with hash 644085600, now seen corresponding path program 793 times [2020-01-16 18:43:00,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:00,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520861335] [2020-01-16 18:43:00,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:01,255 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:01,262 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 18:43:01,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520861335] [2020-01-16 18:43:01,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:01,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:01,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015461802] [2020-01-16 18:43:01,263 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:01,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:01,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:01,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:01,263 INFO L87 Difference]: Start difference. First operand 1563 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:43:01,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:01,464 INFO L93 Difference]: Finished difference Result 2985 states and 11793 transitions. [2020-01-16 18:43:01,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:01,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:01,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:01,472 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:43:01,472 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:43:01,473 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 18:43:01,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:43:01,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1584. [2020-01-16 18:43:01,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:43:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7089 transitions. [2020-01-16 18:43:01,539 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7089 transitions. Word has length 28 [2020-01-16 18:43:01,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:01,539 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7089 transitions. [2020-01-16 18:43:01,539 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7089 transitions. [2020-01-16 18:43:01,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:01,541 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:01,541 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:01,541 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 18:43:01,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:01,542 INFO L82 PathProgramCache]: Analyzing trace with hash 2133490596, now seen corresponding path program 794 times [2020-01-16 18:43:01,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:01,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409878146] [2020-01-16 18:43:01,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:02,020 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-01-16 18:43:02,144 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:02,151 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 18:43:02,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409878146] [2020-01-16 18:43:02,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:02,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:02,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478670591] [2020-01-16 18:43:02,152 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:02,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:02,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:02,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:02,152 INFO L87 Difference]: Start difference. First operand 1584 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:43:02,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:02,333 INFO L93 Difference]: Finished difference Result 2990 states and 11797 transitions. [2020-01-16 18:43:02,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:02,333 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:02,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:02,341 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:43:02,341 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:43:02,341 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 18:43:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:43:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1578. [2020-01-16 18:43:02,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:43:02,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7072 transitions. [2020-01-16 18:43:02,407 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7072 transitions. Word has length 28 [2020-01-16 18:43:02,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:02,407 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7072 transitions. [2020-01-16 18:43:02,407 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7072 transitions. [2020-01-16 18:43:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:02,409 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:02,410 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 18:43:02,410 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 18:43:02,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:02,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2039940738, now seen corresponding path program 795 times [2020-01-16 18:43:02,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:02,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904364434] [2020-01-16 18:43:02,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:03,006 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:43:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:03,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904364434] [2020-01-16 18:43:03,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:03,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:03,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029384925] [2020-01-16 18:43:03,013 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:03,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:03,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:03,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:03,013 INFO L87 Difference]: Start difference. First operand 1578 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:43:03,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:03,230 INFO L93 Difference]: Finished difference Result 2982 states and 11782 transitions. [2020-01-16 18:43:03,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:03,230 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:03,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:03,237 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:43:03,237 INFO L226 Difference]: Without dead ends: 2967 [2020-01-16 18:43:03,237 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 18:43:03,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-01-16 18:43:03,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1583. [2020-01-16 18:43:03,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:43:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7081 transitions. [2020-01-16 18:43:03,304 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7081 transitions. Word has length 28 [2020-01-16 18:43:03,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:03,304 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7081 transitions. [2020-01-16 18:43:03,304 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7081 transitions. [2020-01-16 18:43:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:03,306 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:03,306 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 18:43:03,307 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 18:43:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:03,307 INFO L82 PathProgramCache]: Analyzing trace with hash 194166756, now seen corresponding path program 796 times [2020-01-16 18:43:03,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:03,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115726479] [2020-01-16 18:43:03,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:03,784 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2020-01-16 18:43:03,913 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:43:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:03,920 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115726479] [2020-01-16 18:43:03,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:03,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:03,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123261328] [2020-01-16 18:43:03,920 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:03,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:03,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:03,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:03,921 INFO L87 Difference]: Start difference. First operand 1583 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:43:04,149 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-01-16 18:43:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:04,166 INFO L93 Difference]: Finished difference Result 2985 states and 11783 transitions. [2020-01-16 18:43:04,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:04,166 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:04,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:04,174 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:43:04,174 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:43:04,174 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 18:43:04,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:43:04,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1578. [2020-01-16 18:43:04,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:43:04,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7067 transitions. [2020-01-16 18:43:04,239 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7067 transitions. Word has length 28 [2020-01-16 18:43:04,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:04,239 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7067 transitions. [2020-01-16 18:43:04,240 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:04,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7067 transitions. [2020-01-16 18:43:04,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:04,242 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:04,242 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:04,242 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 18:43:04,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:04,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1623621122, now seen corresponding path program 797 times [2020-01-16 18:43:04,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:04,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591076923] [2020-01-16 18:43:04,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:04,723 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-01-16 18:43:04,849 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:04,856 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 18:43:04,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591076923] [2020-01-16 18:43:04,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:04,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:04,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485275267] [2020-01-16 18:43:04,857 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:04,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:04,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:04,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:04,857 INFO L87 Difference]: Start difference. First operand 1578 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:43:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:05,009 INFO L93 Difference]: Finished difference Result 2997 states and 11807 transitions. [2020-01-16 18:43:05,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:05,010 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:05,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:05,017 INFO L225 Difference]: With dead ends: 2997 [2020-01-16 18:43:05,017 INFO L226 Difference]: Without dead ends: 2977 [2020-01-16 18:43:05,017 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 18:43:05,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-01-16 18:43:05,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1588. [2020-01-16 18:43:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:43:05,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7084 transitions. [2020-01-16 18:43:05,083 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7084 transitions. Word has length 28 [2020-01-16 18:43:05,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:05,083 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7084 transitions. [2020-01-16 18:43:05,084 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:05,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7084 transitions. [2020-01-16 18:43:05,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:05,086 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:05,086 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:05,086 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 18:43:05,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:05,086 INFO L82 PathProgramCache]: Analyzing trace with hash -878918624, now seen corresponding path program 798 times [2020-01-16 18:43:05,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:05,086 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220834114] [2020-01-16 18:43:05,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:05,689 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:43:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:05,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220834114] [2020-01-16 18:43:05,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:05,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:05,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665531197] [2020-01-16 18:43:05,697 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:05,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:05,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:05,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:05,697 INFO L87 Difference]: Start difference. First operand 1588 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:43:05,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:05,920 INFO L93 Difference]: Finished difference Result 2995 states and 11795 transitions. [2020-01-16 18:43:05,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:05,920 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:05,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:05,928 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 18:43:05,928 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:43:05,928 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 18:43:05,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:43:05,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1571. [2020-01-16 18:43:05,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:43:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7047 transitions. [2020-01-16 18:43:05,994 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7047 transitions. Word has length 28 [2020-01-16 18:43:05,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:05,994 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7047 transitions. [2020-01-16 18:43:05,994 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:05,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7047 transitions. [2020-01-16 18:43:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:05,996 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:05,997 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 18:43:05,997 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 18:43:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:05,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1231830922, now seen corresponding path program 799 times [2020-01-16 18:43:05,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:05,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686305571] [2020-01-16 18:43:05,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:06,584 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:43:06,590 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 18:43:06,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686305571] [2020-01-16 18:43:06,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:06,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:06,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065365814] [2020-01-16 18:43:06,591 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:06,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:06,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:06,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:06,591 INFO L87 Difference]: Start difference. First operand 1571 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:43:06,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:06,789 INFO L93 Difference]: Finished difference Result 2981 states and 11778 transitions. [2020-01-16 18:43:06,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:06,790 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:06,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:06,797 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:43:06,797 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:43:06,798 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:43:06,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:43:06,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1583. [2020-01-16 18:43:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:43:06,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7080 transitions. [2020-01-16 18:43:06,863 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7080 transitions. Word has length 28 [2020-01-16 18:43:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:06,864 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7080 transitions. [2020-01-16 18:43:06,864 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:06,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7080 transitions. [2020-01-16 18:43:06,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:06,866 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:06,866 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 18:43:06,866 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 18:43:06,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:06,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1573731378, now seen corresponding path program 800 times [2020-01-16 18:43:06,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:06,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413273058] [2020-01-16 18:43:06,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:07,343 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29 [2020-01-16 18:43:07,469 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:43:07,475 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 18:43:07,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413273058] [2020-01-16 18:43:07,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:07,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:07,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231010151] [2020-01-16 18:43:07,476 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:07,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:07,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:07,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:07,476 INFO L87 Difference]: Start difference. First operand 1583 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:43:07,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:07,638 INFO L93 Difference]: Finished difference Result 2986 states and 11782 transitions. [2020-01-16 18:43:07,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:07,639 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:07,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:07,646 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:43:07,647 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:43:07,647 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 18:43:07,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:43:07,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1577. [2020-01-16 18:43:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:43:07,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7063 transitions. [2020-01-16 18:43:07,712 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7063 transitions. Word has length 28 [2020-01-16 18:43:07,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:07,712 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7063 transitions. [2020-01-16 18:43:07,712 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:07,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7063 transitions. [2020-01-16 18:43:07,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:07,715 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:07,715 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 18:43:07,715 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 18:43:07,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:07,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1987425218, now seen corresponding path program 801 times [2020-01-16 18:43:07,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:07,715 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392296847] [2020-01-16 18:43:07,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:08,318 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:43:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:08,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392296847] [2020-01-16 18:43:08,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:08,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:08,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067642628] [2020-01-16 18:43:08,325 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:08,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:08,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:08,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:08,325 INFO L87 Difference]: Start difference. First operand 1577 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:43:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:08,565 INFO L93 Difference]: Finished difference Result 2977 states and 11765 transitions. [2020-01-16 18:43:08,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:08,566 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:08,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:08,574 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:43:08,574 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:43:08,574 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 18:43:08,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:43:08,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1582. [2020-01-16 18:43:08,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:43:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7072 transitions. [2020-01-16 18:43:08,640 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7072 transitions. Word has length 28 [2020-01-16 18:43:08,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:08,640 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7072 transitions. [2020-01-16 18:43:08,640 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7072 transitions. [2020-01-16 18:43:08,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:08,642 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:08,642 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 18:43:08,643 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 18:43:08,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:08,643 INFO L82 PathProgramCache]: Analyzing trace with hash -324772530, now seen corresponding path program 802 times [2020-01-16 18:43:08,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:08,643 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886087011] [2020-01-16 18:43:08,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:09,232 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:43:09,239 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 18:43:09,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886087011] [2020-01-16 18:43:09,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:09,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:09,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341265557] [2020-01-16 18:43:09,239 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:09,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:09,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:09,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:09,240 INFO L87 Difference]: Start difference. First operand 1582 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:43:09,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:09,442 INFO L93 Difference]: Finished difference Result 2979 states and 11764 transitions. [2020-01-16 18:43:09,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:09,443 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:09,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:09,450 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:43:09,450 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:43:09,451 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 18:43:09,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:43:09,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1577. [2020-01-16 18:43:09,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:43:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7058 transitions. [2020-01-16 18:43:09,516 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7058 transitions. Word has length 28 [2020-01-16 18:43:09,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:09,516 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7058 transitions. [2020-01-16 18:43:09,517 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:09,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7058 transitions. [2020-01-16 18:43:09,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:09,519 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:09,519 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:09,519 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 18:43:09,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:09,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1571105602, now seen corresponding path program 803 times [2020-01-16 18:43:09,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:09,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727275298] [2020-01-16 18:43:09,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:09,998 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29 [2020-01-16 18:43:10,125 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:43:10,132 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 18:43:10,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727275298] [2020-01-16 18:43:10,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:10,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:10,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376330568] [2020-01-16 18:43:10,133 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:10,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:10,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:10,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:10,133 INFO L87 Difference]: Start difference. First operand 1577 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:43:10,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:10,316 INFO L93 Difference]: Finished difference Result 2990 states and 11786 transitions. [2020-01-16 18:43:10,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:10,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:10,353 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:43:10,353 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:43:10,353 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 18:43:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:43:10,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1585. [2020-01-16 18:43:10,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:43:10,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7072 transitions. [2020-01-16 18:43:10,418 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7072 transitions. Word has length 28 [2020-01-16 18:43:10,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:10,418 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7072 transitions. [2020-01-16 18:43:10,418 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:10,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7072 transitions. [2020-01-16 18:43:10,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:10,421 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:10,421 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 18:43:10,421 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 18:43:10,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:10,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1397857910, now seen corresponding path program 804 times [2020-01-16 18:43:10,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:10,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943553965] [2020-01-16 18:43:10,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:11,037 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:43:11,043 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 18:43:11,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943553965] [2020-01-16 18:43:11,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:11,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:11,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780335072] [2020-01-16 18:43:11,044 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:11,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:11,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:11,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:11,044 INFO L87 Difference]: Start difference. First operand 1585 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:43:11,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:11,238 INFO L93 Difference]: Finished difference Result 2987 states and 11773 transitions. [2020-01-16 18:43:11,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:11,238 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:11,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:11,245 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 18:43:11,245 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:43:11,245 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 18:43:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:43:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1571. [2020-01-16 18:43:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:43:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7041 transitions. [2020-01-16 18:43:11,316 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7041 transitions. Word has length 28 [2020-01-16 18:43:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:11,317 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7041 transitions. [2020-01-16 18:43:11,317 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7041 transitions. [2020-01-16 18:43:11,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:11,319 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:11,319 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 18:43:11,319 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 18:43:11,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:11,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1242334026, now seen corresponding path program 805 times [2020-01-16 18:43:11,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:11,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121886443] [2020-01-16 18:43:11,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:11,908 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:43:11,915 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 18:43:11,916 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121886443] [2020-01-16 18:43:11,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:11,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:11,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119007393] [2020-01-16 18:43:11,916 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:11,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:11,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:11,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:11,916 INFO L87 Difference]: Start difference. First operand 1571 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:43:12,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:12,121 INFO L93 Difference]: Finished difference Result 2973 states and 11757 transitions. [2020-01-16 18:43:12,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:12,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:12,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:12,129 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:43:12,129 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:43:12,130 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:43:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:43:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1581. [2020-01-16 18:43:12,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:43:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7069 transitions. [2020-01-16 18:43:12,196 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7069 transitions. Word has length 28 [2020-01-16 18:43:12,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:12,196 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7069 transitions. [2020-01-16 18:43:12,196 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:12,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7069 transitions. [2020-01-16 18:43:12,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:12,199 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:12,199 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:12,199 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 18:43:12,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:12,199 INFO L82 PathProgramCache]: Analyzing trace with hash -818525776, now seen corresponding path program 806 times [2020-01-16 18:43:12,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:12,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101922446] [2020-01-16 18:43:12,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:12,669 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2020-01-16 18:43:12,797 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:43:12,804 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 18:43:12,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101922446] [2020-01-16 18:43:12,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:12,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:12,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501158280] [2020-01-16 18:43:12,805 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:12,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:12,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:12,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:12,805 INFO L87 Difference]: Start difference. First operand 1581 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:43:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:13,040 INFO L93 Difference]: Finished difference Result 2976 states and 11758 transitions. [2020-01-16 18:43:13,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:13,040 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:13,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:13,048 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:43:13,049 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:43:13,049 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 18:43:13,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:43:13,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1576. [2020-01-16 18:43:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:43:13,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7055 transitions. [2020-01-16 18:43:13,115 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7055 transitions. Word has length 28 [2020-01-16 18:43:13,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:13,115 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7055 transitions. [2020-01-16 18:43:13,115 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7055 transitions. [2020-01-16 18:43:13,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:13,117 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:13,117 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:13,117 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 18:43:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:13,117 INFO L82 PathProgramCache]: Analyzing trace with hash 707104224, now seen corresponding path program 807 times [2020-01-16 18:43:13,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:13,118 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969549382] [2020-01-16 18:43:13,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:13,708 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:13,715 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 18:43:13,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969549382] [2020-01-16 18:43:13,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:13,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:13,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366445165] [2020-01-16 18:43:13,715 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:13,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:13,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:13,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:13,716 INFO L87 Difference]: Start difference. First operand 1576 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:43:13,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:13,928 INFO L93 Difference]: Finished difference Result 2972 states and 11750 transitions. [2020-01-16 18:43:13,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:13,929 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:13,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:13,936 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:43:13,937 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:43:13,937 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 18:43:13,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:43:13,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1581. [2020-01-16 18:43:13,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:43:14,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7064 transitions. [2020-01-16 18:43:14,003 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7064 transitions. Word has length 28 [2020-01-16 18:43:14,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:14,004 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7064 transitions. [2020-01-16 18:43:14,004 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:14,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7064 transitions. [2020-01-16 18:43:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:14,006 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:14,006 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 18:43:14,006 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 18:43:14,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:14,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1925210384, now seen corresponding path program 808 times [2020-01-16 18:43:14,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:14,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087577403] [2020-01-16 18:43:14,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:14,593 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:14,600 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 18:43:14,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087577403] [2020-01-16 18:43:14,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:14,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:14,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717480911] [2020-01-16 18:43:14,600 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:14,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:14,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:14,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:14,601 INFO L87 Difference]: Start difference. First operand 1581 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:43:14,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:14,833 INFO L93 Difference]: Finished difference Result 2974 states and 11749 transitions. [2020-01-16 18:43:14,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:14,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:14,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:14,841 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:43:14,841 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:43:14,841 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 18:43:14,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:43:14,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1576. [2020-01-16 18:43:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:43:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7050 transitions. [2020-01-16 18:43:14,907 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7050 transitions. Word has length 28 [2020-01-16 18:43:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:14,907 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7050 transitions. [2020-01-16 18:43:14,907 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7050 transitions. [2020-01-16 18:43:14,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:14,910 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:14,910 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:14,910 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 18:43:14,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:14,910 INFO L82 PathProgramCache]: Analyzing trace with hash -815900000, now seen corresponding path program 809 times [2020-01-16 18:43:14,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:14,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649899506] [2020-01-16 18:43:14,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:15,499 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:43:15,506 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 18:43:15,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649899506] [2020-01-16 18:43:15,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:15,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:15,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747552783] [2020-01-16 18:43:15,506 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:15,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:15,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:15,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:15,507 INFO L87 Difference]: Start difference. First operand 1576 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:43:15,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:15,751 INFO L93 Difference]: Finished difference Result 2980 states and 11763 transitions. [2020-01-16 18:43:15,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:15,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:15,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:15,758 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:43:15,759 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:43:15,759 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 18:43:15,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:43:15,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1583. [2020-01-16 18:43:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:43:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7063 transitions. [2020-01-16 18:43:15,825 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7063 transitions. Word has length 28 [2020-01-16 18:43:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:15,825 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7063 transitions. [2020-01-16 18:43:15,825 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:15,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7063 transitions. [2020-01-16 18:43:15,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:15,827 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:15,827 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:15,827 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 18:43:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:15,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1387354806, now seen corresponding path program 810 times [2020-01-16 18:43:15,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:15,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377246510] [2020-01-16 18:43:15,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:16,420 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:16,425 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377246510] [2020-01-16 18:43:16,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:16,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:16,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463832713] [2020-01-16 18:43:16,426 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:16,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:16,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:16,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:16,426 INFO L87 Difference]: Start difference. First operand 1583 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:43:16,720 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-01-16 18:43:16,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:16,742 INFO L93 Difference]: Finished difference Result 2979 states and 11754 transitions. [2020-01-16 18:43:16,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:16,743 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:16,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:16,751 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:43:16,751 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:43:16,751 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 18:43:16,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:43:16,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1571. [2020-01-16 18:43:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:43:16,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:43:16,817 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:43:16,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:16,817 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:43:16,817 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:16,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:43:16,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:16,820 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:16,820 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:16,820 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 18:43:16,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:16,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1542222066, now seen corresponding path program 811 times [2020-01-16 18:43:16,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:16,820 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591184685] [2020-01-16 18:43:16,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:17,310 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-01-16 18:43:17,439 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:17,445 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 18:43:17,445 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591184685] [2020-01-16 18:43:17,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:17,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:17,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541301443] [2020-01-16 18:43:17,446 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:17,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:17,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:17,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:17,446 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:43:17,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:17,638 INFO L93 Difference]: Finished difference Result 3006 states and 11825 transitions. [2020-01-16 18:43:17,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:17,638 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:17,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:17,646 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:43:17,646 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 18:43:17,646 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 18:43:17,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 18:43:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1591. [2020-01-16 18:43:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 18:43:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7086 transitions. [2020-01-16 18:43:17,715 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7086 transitions. Word has length 28 [2020-01-16 18:43:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:17,715 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7086 transitions. [2020-01-16 18:43:17,715 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7086 transitions. [2020-01-16 18:43:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:17,717 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:17,717 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 18:43:17,717 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 18:43:17,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:17,718 INFO L82 PathProgramCache]: Analyzing trace with hash -797519568, now seen corresponding path program 812 times [2020-01-16 18:43:17,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:17,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604567716] [2020-01-16 18:43:17,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:18,216 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2020-01-16 18:43:18,344 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:43:18,351 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 18:43:18,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604567716] [2020-01-16 18:43:18,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:18,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:18,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452725840] [2020-01-16 18:43:18,351 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:18,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:18,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:18,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:18,352 INFO L87 Difference]: Start difference. First operand 1591 states and 7086 transitions. Second operand 11 states. [2020-01-16 18:43:18,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:18,631 INFO L93 Difference]: Finished difference Result 3004 states and 11813 transitions. [2020-01-16 18:43:18,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:18,631 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:18,639 INFO L225 Difference]: With dead ends: 3004 [2020-01-16 18:43:18,639 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 18:43:18,639 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 18:43:18,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 18:43:18,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1581. [2020-01-16 18:43:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:43:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7060 transitions. [2020-01-16 18:43:18,705 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7060 transitions. Word has length 28 [2020-01-16 18:43:18,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:18,705 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7060 transitions. [2020-01-16 18:43:18,705 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:18,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7060 transitions. [2020-01-16 18:43:18,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:18,707 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:18,707 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 18:43:18,708 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 18:43:18,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:18,708 INFO L82 PathProgramCache]: Analyzing trace with hash -2077451868, now seen corresponding path program 813 times [2020-01-16 18:43:18,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:18,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908042041] [2020-01-16 18:43:18,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:19,202 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29 [2020-01-16 18:43:19,330 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:43:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:19,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908042041] [2020-01-16 18:43:19,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:19,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:19,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135106941] [2020-01-16 18:43:19,337 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:19,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:19,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:19,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:19,338 INFO L87 Difference]: Start difference. First operand 1581 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:43:19,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:19,522 INFO L93 Difference]: Finished difference Result 3003 states and 11810 transitions. [2020-01-16 18:43:19,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:19,523 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:19,529 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:43:19,530 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:43:19,530 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 18:43:19,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:43:19,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1589. [2020-01-16 18:43:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 18:43:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7074 transitions. [2020-01-16 18:43:19,597 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7074 transitions. Word has length 28 [2020-01-16 18:43:19,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:19,597 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7074 transitions. [2020-01-16 18:43:19,597 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:19,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7074 transitions. [2020-01-16 18:43:19,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:19,600 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:19,600 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:19,600 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 18:43:19,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:19,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1904204176, now seen corresponding path program 814 times [2020-01-16 18:43:19,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:19,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706623177] [2020-01-16 18:43:19,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:20,214 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-01-16 18:43:20,221 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 18:43:20,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706623177] [2020-01-16 18:43:20,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:20,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:20,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340642732] [2020-01-16 18:43:20,222 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:20,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:20,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:20,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:20,222 INFO L87 Difference]: Start difference. First operand 1589 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:43:20,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:20,439 INFO L93 Difference]: Finished difference Result 3000 states and 11797 transitions. [2020-01-16 18:43:20,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:20,440 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:20,448 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 18:43:20,448 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:43:20,448 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 18:43:20,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:43:20,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1581. [2020-01-16 18:43:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:43:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7052 transitions. [2020-01-16 18:43:20,515 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7052 transitions. Word has length 28 [2020-01-16 18:43:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:20,516 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7052 transitions. [2020-01-16 18:43:20,516 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:20,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7052 transitions. [2020-01-16 18:43:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:20,518 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:20,518 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:20,518 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 18:43:20,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:20,518 INFO L82 PathProgramCache]: Analyzing trace with hash 278191588, now seen corresponding path program 815 times [2020-01-16 18:43:20,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:20,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137186595] [2020-01-16 18:43:20,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:21,007 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2020-01-16 18:43:21,135 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:43:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:21,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137186595] [2020-01-16 18:43:21,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:21,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:21,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250692276] [2020-01-16 18:43:21,142 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:21,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:21,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:21,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:21,142 INFO L87 Difference]: Start difference. First operand 1581 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:43:21,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:21,364 INFO L93 Difference]: Finished difference Result 2998 states and 11794 transitions. [2020-01-16 18:43:21,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:21,364 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:21,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:21,372 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 18:43:21,372 INFO L226 Difference]: Without dead ends: 2980 [2020-01-16 18:43:21,373 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 18:43:21,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-01-16 18:43:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1588. [2020-01-16 18:43:21,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:43:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7065 transitions. [2020-01-16 18:43:21,440 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7065 transitions. Word has length 28 [2020-01-16 18:43:21,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:21,440 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7065 transitions. [2020-01-16 18:43:21,440 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:21,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7065 transitions. [2020-01-16 18:43:21,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:21,443 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:21,443 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:21,443 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 18:43:21,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:21,443 INFO L82 PathProgramCache]: Analyzing trace with hash -293263218, now seen corresponding path program 816 times [2020-01-16 18:43:21,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:21,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587762561] [2020-01-16 18:43:21,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:22,044 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:22,051 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587762561] [2020-01-16 18:43:22,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:22,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:22,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128119831] [2020-01-16 18:43:22,051 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:22,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:22,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:22,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:22,052 INFO L87 Difference]: Start difference. First operand 1588 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:43:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:22,347 INFO L93 Difference]: Finished difference Result 2997 states and 11785 transitions. [2020-01-16 18:43:22,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:22,348 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:22,355 INFO L225 Difference]: With dead ends: 2997 [2020-01-16 18:43:22,355 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 18:43:22,355 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:43:22,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 18:43:22,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1563. [2020-01-16 18:43:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:43:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7013 transitions. [2020-01-16 18:43:22,421 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7013 transitions. Word has length 28 [2020-01-16 18:43:22,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:22,421 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7013 transitions. [2020-01-16 18:43:22,421 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:22,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7013 transitions. [2020-01-16 18:43:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:22,423 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:22,424 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:22,424 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 18:43:22,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:22,424 INFO L82 PathProgramCache]: Analyzing trace with hash -969642016, now seen corresponding path program 817 times [2020-01-16 18:43:22,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:22,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235960583] [2020-01-16 18:43:22,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:23,039 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:23,046 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 18:43:23,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235960583] [2020-01-16 18:43:23,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:23,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:23,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856664752] [2020-01-16 18:43:23,047 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:23,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:23,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:23,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:23,047 INFO L87 Difference]: Start difference. First operand 1563 states and 7013 transitions. Second operand 11 states. [2020-01-16 18:43:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:23,254 INFO L93 Difference]: Finished difference Result 3001 states and 11833 transitions. [2020-01-16 18:43:23,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:23,255 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:23,262 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:43:23,262 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:43:23,263 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 18:43:23,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:43:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1588. [2020-01-16 18:43:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:43:23,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7093 transitions. [2020-01-16 18:43:23,330 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7093 transitions. Word has length 28 [2020-01-16 18:43:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:23,331 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7093 transitions. [2020-01-16 18:43:23,331 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:23,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7093 transitions. [2020-01-16 18:43:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:23,333 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:23,333 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 18:43:23,333 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 18:43:23,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:23,333 INFO L82 PathProgramCache]: Analyzing trace with hash -224939518, now seen corresponding path program 818 times [2020-01-16 18:43:23,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:23,333 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696352300] [2020-01-16 18:43:23,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:23,818 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-01-16 18:43:23,944 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:23,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:23,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696352300] [2020-01-16 18:43:23,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:23,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:23,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350676880] [2020-01-16 18:43:23,951 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:23,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:23,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:23,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:23,952 INFO L87 Difference]: Start difference. First operand 1588 states and 7093 transitions. Second operand 11 states. [2020-01-16 18:43:24,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:24,102 INFO L93 Difference]: Finished difference Result 3005 states and 11834 transitions. [2020-01-16 18:43:24,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:24,103 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:24,110 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:43:24,111 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:43:24,111 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 18:43:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:43:24,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1581. [2020-01-16 18:43:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:43:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7073 transitions. [2020-01-16 18:43:24,177 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7073 transitions. Word has length 28 [2020-01-16 18:43:24,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:24,177 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7073 transitions. [2020-01-16 18:43:24,177 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:24,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7073 transitions. [2020-01-16 18:43:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:24,179 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:24,179 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 18:43:24,180 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 18:43:24,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:24,180 INFO L82 PathProgramCache]: Analyzing trace with hash 641298942, now seen corresponding path program 819 times [2020-01-16 18:43:24,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:24,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071113777] [2020-01-16 18:43:24,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:24,776 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:43:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:24,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071113777] [2020-01-16 18:43:24,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:24,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:24,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584428058] [2020-01-16 18:43:24,783 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:24,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:24,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:24,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:24,784 INFO L87 Difference]: Start difference. First operand 1581 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:43:24,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:24,966 INFO L93 Difference]: Finished difference Result 2998 states and 11821 transitions. [2020-01-16 18:43:24,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:24,967 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:24,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:24,974 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 18:43:24,974 INFO L226 Difference]: Without dead ends: 2982 [2020-01-16 18:43:24,975 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 18:43:25,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2020-01-16 18:43:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1587. [2020-01-16 18:43:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:43:25,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7084 transitions. [2020-01-16 18:43:25,041 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7084 transitions. Word has length 28 [2020-01-16 18:43:25,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:25,041 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7084 transitions. [2020-01-16 18:43:25,041 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:25,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7084 transitions. [2020-01-16 18:43:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:25,043 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:25,043 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 18:43:25,043 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 18:43:25,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:25,044 INFO L82 PathProgramCache]: Analyzing trace with hash 2130703938, now seen corresponding path program 820 times [2020-01-16 18:43:25,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:25,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210245567] [2020-01-16 18:43:25,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:25,642 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:43:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:25,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210245567] [2020-01-16 18:43:25,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:25,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:25,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535046084] [2020-01-16 18:43:25,651 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:25,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:25,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:25,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:25,651 INFO L87 Difference]: Start difference. First operand 1587 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:43:25,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:25,865 INFO L93 Difference]: Finished difference Result 3000 states and 11819 transitions. [2020-01-16 18:43:25,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:25,865 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:25,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:25,872 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 18:43:25,872 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 18:43:25,872 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 18:43:25,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 18:43:25,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1581. [2020-01-16 18:43:25,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:43:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7067 transitions. [2020-01-16 18:43:25,940 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7067 transitions. Word has length 28 [2020-01-16 18:43:25,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:25,940 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7067 transitions. [2020-01-16 18:43:25,940 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:25,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7067 transitions. [2020-01-16 18:43:25,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:25,942 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:25,942 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 18:43:25,942 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 18:43:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:25,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1298024898, now seen corresponding path program 821 times [2020-01-16 18:43:25,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:25,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720234754] [2020-01-16 18:43:25,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:26,436 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-01-16 18:43:26,564 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:26,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720234754] [2020-01-16 18:43:26,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:26,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:26,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028203281] [2020-01-16 18:43:26,571 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:26,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:26,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:26,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:26,572 INFO L87 Difference]: Start difference. First operand 1581 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:43:26,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:26,713 INFO L93 Difference]: Finished difference Result 3010 states and 11838 transitions. [2020-01-16 18:43:26,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:26,714 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:26,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:26,721 INFO L225 Difference]: With dead ends: 3010 [2020-01-16 18:43:26,721 INFO L226 Difference]: Without dead ends: 2990 [2020-01-16 18:43:26,721 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 18:43:26,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-01-16 18:43:26,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1591. [2020-01-16 18:43:26,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 18:43:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7084 transitions. [2020-01-16 18:43:26,787 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7084 transitions. Word has length 28 [2020-01-16 18:43:26,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:26,788 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7084 transitions. [2020-01-16 18:43:26,788 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:26,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7084 transitions. [2020-01-16 18:43:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:26,790 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:26,790 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:26,790 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 18:43:26,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:26,790 INFO L82 PathProgramCache]: Analyzing trace with hash -553322400, now seen corresponding path program 822 times [2020-01-16 18:43:26,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:26,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280833108] [2020-01-16 18:43:26,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:27,421 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:43:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:27,428 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280833108] [2020-01-16 18:43:27,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:27,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:27,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092147693] [2020-01-16 18:43:27,428 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:27,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:27,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:27,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:27,429 INFO L87 Difference]: Start difference. First operand 1591 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:43:27,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:27,614 INFO L93 Difference]: Finished difference Result 3008 states and 11826 transitions. [2020-01-16 18:43:27,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:27,614 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:27,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:27,621 INFO L225 Difference]: With dead ends: 3008 [2020-01-16 18:43:27,621 INFO L226 Difference]: Without dead ends: 2972 [2020-01-16 18:43:27,621 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 18:43:27,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-01-16 18:43:27,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1573. [2020-01-16 18:43:27,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:43:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 18:43:27,687 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 18:43:27,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:27,688 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 18:43:27,688 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:27,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 18:43:27,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:27,690 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:27,690 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 18:43:27,690 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 18:43:27,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:27,690 INFO L82 PathProgramCache]: Analyzing trace with hash -381896694, now seen corresponding path program 823 times [2020-01-16 18:43:27,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:27,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238467041] [2020-01-16 18:43:27,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:28,301 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:28,308 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 18:43:28,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238467041] [2020-01-16 18:43:28,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:28,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:28,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244993759] [2020-01-16 18:43:28,308 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:28,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:28,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:28,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:28,309 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:43:28,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:28,501 INFO L93 Difference]: Finished difference Result 2997 states and 11817 transitions. [2020-01-16 18:43:28,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:28,502 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:28,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:28,509 INFO L225 Difference]: With dead ends: 2997 [2020-01-16 18:43:28,509 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:43:28,509 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 18:43:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:43:28,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1587. [2020-01-16 18:43:28,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:43:28,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7083 transitions. [2020-01-16 18:43:28,575 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7083 transitions. Word has length 28 [2020-01-16 18:43:28,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:28,575 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7083 transitions. [2020-01-16 18:43:28,575 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7083 transitions. [2020-01-16 18:43:28,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:28,578 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:28,578 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 18:43:28,578 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 18:43:28,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:28,578 INFO L82 PathProgramCache]: Analyzing trace with hash 362805804, now seen corresponding path program 824 times [2020-01-16 18:43:28,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:28,578 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050147791] [2020-01-16 18:43:28,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:29,104 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:43:29,231 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:29,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050147791] [2020-01-16 18:43:29,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:29,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:29,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471628962] [2020-01-16 18:43:29,238 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:29,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:29,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:29,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:29,239 INFO L87 Difference]: Start difference. First operand 1587 states and 7083 transitions. Second operand 11 states. [2020-01-16 18:43:29,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:29,384 INFO L93 Difference]: Finished difference Result 3001 states and 11818 transitions. [2020-01-16 18:43:29,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:29,385 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:29,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:29,392 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:43:29,393 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:43:29,393 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 18:43:29,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:43:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1580. [2020-01-16 18:43:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:43:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7063 transitions. [2020-01-16 18:43:29,459 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7063 transitions. Word has length 28 [2020-01-16 18:43:29,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:29,460 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7063 transitions. [2020-01-16 18:43:29,460 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:29,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7063 transitions. [2020-01-16 18:43:29,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:29,462 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:29,462 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 18:43:29,462 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 18:43:29,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:29,462 INFO L82 PathProgramCache]: Analyzing trace with hash 693814462, now seen corresponding path program 825 times [2020-01-16 18:43:29,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:29,463 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003795070] [2020-01-16 18:43:29,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:30,067 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:30,075 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 18:43:30,075 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003795070] [2020-01-16 18:43:30,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:30,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:30,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867378802] [2020-01-16 18:43:30,075 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:30,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:30,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:30,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:30,076 INFO L87 Difference]: Start difference. First operand 1580 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:43:30,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:30,260 INFO L93 Difference]: Finished difference Result 2993 states and 11803 transitions. [2020-01-16 18:43:30,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:30,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:30,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:30,268 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:43:30,269 INFO L226 Difference]: Without dead ends: 2977 [2020-01-16 18:43:30,269 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 18:43:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-01-16 18:43:30,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1586. [2020-01-16 18:43:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:43:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7074 transitions. [2020-01-16 18:43:30,336 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7074 transitions. Word has length 28 [2020-01-16 18:43:30,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:30,337 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7074 transitions. [2020-01-16 18:43:30,337 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:30,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7074 transitions. [2020-01-16 18:43:30,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:30,339 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:30,339 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 18:43:30,339 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 18:43:30,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:30,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1611764652, now seen corresponding path program 826 times [2020-01-16 18:43:30,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:30,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693527707] [2020-01-16 18:43:30,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:30,904 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:30,911 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693527707] [2020-01-16 18:43:30,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:30,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:30,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970382695] [2020-01-16 18:43:30,912 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:30,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:30,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:30,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:30,912 INFO L87 Difference]: Start difference. First operand 1586 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:43:31,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:31,084 INFO L93 Difference]: Finished difference Result 2994 states and 11799 transitions. [2020-01-16 18:43:31,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:31,085 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:31,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:31,091 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 18:43:31,091 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 18:43:31,091 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 18:43:31,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 18:43:31,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1580. [2020-01-16 18:43:31,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:43:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7057 transitions. [2020-01-16 18:43:31,153 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7057 transitions. Word has length 28 [2020-01-16 18:43:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:31,153 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7057 transitions. [2020-01-16 18:43:31,153 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:31,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7057 transitions. [2020-01-16 18:43:31,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:31,155 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:31,155 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:31,155 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 18:43:31,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:31,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1245509378, now seen corresponding path program 827 times [2020-01-16 18:43:31,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:31,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883177477] [2020-01-16 18:43:31,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:31,736 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:31,741 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 18:43:31,742 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883177477] [2020-01-16 18:43:31,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:31,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:31,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755675859] [2020-01-16 18:43:31,742 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:31,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:31,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:31,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:31,742 INFO L87 Difference]: Start difference. First operand 1580 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:43:31,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:31,892 INFO L93 Difference]: Finished difference Result 3003 states and 11816 transitions. [2020-01-16 18:43:31,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:31,892 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:31,900 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:43:31,900 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:43:31,900 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:43:31,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:43:31,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1588. [2020-01-16 18:43:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:43:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7071 transitions. [2020-01-16 18:43:31,964 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7071 transitions. Word has length 28 [2020-01-16 18:43:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:31,964 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7071 transitions. [2020-01-16 18:43:31,964 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:31,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7071 transitions. [2020-01-16 18:43:31,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:31,966 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:31,966 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 18:43:31,966 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 18:43:31,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:31,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1072261686, now seen corresponding path program 828 times [2020-01-16 18:43:31,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:31,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506958443] [2020-01-16 18:43:31,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:32,550 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:32,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:32,557 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506958443] [2020-01-16 18:43:32,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:32,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:32,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859920430] [2020-01-16 18:43:32,558 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:32,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:32,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:32,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:32,558 INFO L87 Difference]: Start difference. First operand 1588 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:43:32,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:32,769 INFO L93 Difference]: Finished difference Result 3000 states and 11803 transitions. [2020-01-16 18:43:32,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:32,770 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:32,777 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 18:43:32,777 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:43:32,777 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 18:43:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:43:32,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1573. [2020-01-16 18:43:32,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:43:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7037 transitions. [2020-01-16 18:43:32,840 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7037 transitions. Word has length 28 [2020-01-16 18:43:32,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:32,841 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7037 transitions. [2020-01-16 18:43:32,841 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7037 transitions. [2020-01-16 18:43:32,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:32,843 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:32,843 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 18:43:32,843 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 18:43:32,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:32,843 INFO L82 PathProgramCache]: Analyzing trace with hash -371393590, now seen corresponding path program 829 times [2020-01-16 18:43:32,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:32,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095615724] [2020-01-16 18:43:32,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:33,412 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:43:33,418 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 18:43:33,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095615724] [2020-01-16 18:43:33,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:33,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:33,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454602998] [2020-01-16 18:43:33,419 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:33,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:33,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:33,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:33,419 INFO L87 Difference]: Start difference. First operand 1573 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:43:33,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:33,655 INFO L93 Difference]: Finished difference Result 2989 states and 11795 transitions. [2020-01-16 18:43:33,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:33,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:33,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:33,663 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 18:43:33,663 INFO L226 Difference]: Without dead ends: 2973 [2020-01-16 18:43:33,663 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 18:43:33,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-01-16 18:43:33,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1585. [2020-01-16 18:43:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:43:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7071 transitions. [2020-01-16 18:43:33,727 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7071 transitions. Word has length 28 [2020-01-16 18:43:33,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:33,727 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7071 transitions. [2020-01-16 18:43:33,727 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:33,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7071 transitions. [2020-01-16 18:43:33,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:33,729 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:33,729 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 18:43:33,729 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 18:43:33,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:33,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1118011406, now seen corresponding path program 830 times [2020-01-16 18:43:33,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:33,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945820175] [2020-01-16 18:43:33,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:34,292 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:43:34,297 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 18:43:34,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945820175] [2020-01-16 18:43:34,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:34,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:34,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066861299] [2020-01-16 18:43:34,298 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:34,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:34,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:34,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:34,298 INFO L87 Difference]: Start difference. First operand 1585 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:43:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:34,482 INFO L93 Difference]: Finished difference Result 2991 states and 11793 transitions. [2020-01-16 18:43:34,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:34,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:34,489 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:43:34,489 INFO L226 Difference]: Without dead ends: 2967 [2020-01-16 18:43:34,489 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 18:43:34,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-01-16 18:43:34,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1579. [2020-01-16 18:43:34,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:43:34,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7054 transitions. [2020-01-16 18:43:34,552 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7054 transitions. Word has length 28 [2020-01-16 18:43:34,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:34,552 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7054 transitions. [2020-01-16 18:43:34,552 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:34,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7054 transitions. [2020-01-16 18:43:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:34,554 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:34,554 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 18:43:34,554 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 18:43:34,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:34,555 INFO L82 PathProgramCache]: Analyzing trace with hash -906623392, now seen corresponding path program 831 times [2020-01-16 18:43:34,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:34,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717892349] [2020-01-16 18:43:34,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:35,162 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:43:35,169 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 18:43:35,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717892349] [2020-01-16 18:43:35,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:35,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:35,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816007434] [2020-01-16 18:43:35,169 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:35,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:35,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:35,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:35,170 INFO L87 Difference]: Start difference. First operand 1579 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:43:35,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:35,346 INFO L93 Difference]: Finished difference Result 2988 states and 11787 transitions. [2020-01-16 18:43:35,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:35,347 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:35,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:35,354 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:43:35,354 INFO L226 Difference]: Without dead ends: 2972 [2020-01-16 18:43:35,354 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 18:43:35,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-01-16 18:43:35,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1585. [2020-01-16 18:43:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:43:35,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7065 transitions. [2020-01-16 18:43:35,417 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7065 transitions. Word has length 28 [2020-01-16 18:43:35,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:35,417 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7065 transitions. [2020-01-16 18:43:35,417 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:35,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7065 transitions. [2020-01-16 18:43:35,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:35,419 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:35,419 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:35,420 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 18:43:35,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:35,420 INFO L82 PathProgramCache]: Analyzing trace with hash 11326798, now seen corresponding path program 832 times [2020-01-16 18:43:35,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:35,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596832032] [2020-01-16 18:43:35,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:35,987 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:43:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:35,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596832032] [2020-01-16 18:43:35,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:35,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:35,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797017946] [2020-01-16 18:43:35,994 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:35,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:35,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:35,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:35,994 INFO L87 Difference]: Start difference. First operand 1585 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:43:36,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:36,176 INFO L93 Difference]: Finished difference Result 2989 states and 11783 transitions. [2020-01-16 18:43:36,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:36,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:36,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:36,184 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 18:43:36,185 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:43:36,185 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 18:43:36,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:43:36,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1579. [2020-01-16 18:43:36,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:43:36,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7048 transitions. [2020-01-16 18:43:36,247 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7048 transitions. Word has length 28 [2020-01-16 18:43:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:36,247 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7048 transitions. [2020-01-16 18:43:36,248 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:36,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7048 transitions. [2020-01-16 18:43:36,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:36,250 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:36,250 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:36,250 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 18:43:36,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:36,250 INFO L82 PathProgramCache]: Analyzing trace with hash -490303776, now seen corresponding path program 833 times [2020-01-16 18:43:36,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:36,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562317816] [2020-01-16 18:43:36,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:36,820 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:43:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:36,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562317816] [2020-01-16 18:43:36,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:36,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:36,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554707023] [2020-01-16 18:43:36,828 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:36,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:36,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:36,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:36,828 INFO L87 Difference]: Start difference. First operand 1579 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:43:37,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:37,001 INFO L93 Difference]: Finished difference Result 2993 states and 11792 transitions. [2020-01-16 18:43:37,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:37,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:37,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:37,009 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:43:37,009 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:43:37,009 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 18:43:37,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:43:37,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1586. [2020-01-16 18:43:37,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:43:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7061 transitions. [2020-01-16 18:43:37,072 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7061 transitions. Word has length 28 [2020-01-16 18:43:37,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:37,072 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7061 transitions. [2020-01-16 18:43:37,072 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:37,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7061 transitions. [2020-01-16 18:43:37,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:37,074 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:37,074 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:37,074 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 18:43:37,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:37,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1061758582, now seen corresponding path program 834 times [2020-01-16 18:43:37,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:37,075 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195723172] [2020-01-16 18:43:37,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:37,639 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:43:37,645 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 18:43:37,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195723172] [2020-01-16 18:43:37,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:37,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:37,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488577174] [2020-01-16 18:43:37,646 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:37,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:37,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:37,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:37,646 INFO L87 Difference]: Start difference. First operand 1586 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:43:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:37,825 INFO L93 Difference]: Finished difference Result 2992 states and 11783 transitions. [2020-01-16 18:43:37,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:37,826 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:37,833 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:43:37,833 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:43:37,833 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 18:43:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:43:37,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1573. [2020-01-16 18:43:37,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:43:37,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7031 transitions. [2020-01-16 18:43:37,897 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7031 transitions. Word has length 28 [2020-01-16 18:43:37,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:37,897 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7031 transitions. [2020-01-16 18:43:37,897 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:37,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7031 transitions. [2020-01-16 18:43:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:37,899 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:37,899 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 18:43:37,899 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 18:43:37,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:37,899 INFO L82 PathProgramCache]: Analyzing trace with hash 383812012, now seen corresponding path program 835 times [2020-01-16 18:43:37,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:37,899 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146783893] [2020-01-16 18:43:37,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:38,482 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:43:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:38,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146783893] [2020-01-16 18:43:38,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:38,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:38,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370933410] [2020-01-16 18:43:38,489 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:38,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:38,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:38,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:38,489 INFO L87 Difference]: Start difference. First operand 1573 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:43:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:38,654 INFO L93 Difference]: Finished difference Result 3015 states and 11843 transitions. [2020-01-16 18:43:38,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:38,654 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:38,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:38,661 INFO L225 Difference]: With dead ends: 3015 [2020-01-16 18:43:38,661 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 18:43:38,661 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 18:43:38,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 18:43:38,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1593. [2020-01-16 18:43:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 18:43:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7081 transitions. [2020-01-16 18:43:38,724 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7081 transitions. Word has length 28 [2020-01-16 18:43:38,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:38,724 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7081 transitions. [2020-01-16 18:43:38,724 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:38,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7081 transitions. [2020-01-16 18:43:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:38,726 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:38,726 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 18:43:38,727 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 18:43:38,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:38,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1128514510, now seen corresponding path program 836 times [2020-01-16 18:43:38,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:38,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463060338] [2020-01-16 18:43:38,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:39,310 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:43:39,317 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 18:43:39,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463060338] [2020-01-16 18:43:39,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:39,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:39,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974849195] [2020-01-16 18:43:39,318 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:39,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:39,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:39,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:39,318 INFO L87 Difference]: Start difference. First operand 1593 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:43:39,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:39,497 INFO L93 Difference]: Finished difference Result 3013 states and 11831 transitions. [2020-01-16 18:43:39,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:39,498 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:39,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:39,505 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 18:43:39,505 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:43:39,505 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 18:43:39,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:43:39,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1583. [2020-01-16 18:43:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:43:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7055 transitions. [2020-01-16 18:43:39,568 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7055 transitions. Word has length 28 [2020-01-16 18:43:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:39,568 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7055 transitions. [2020-01-16 18:43:39,568 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7055 transitions. [2020-01-16 18:43:39,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:39,570 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:39,570 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:39,570 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 18:43:39,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:39,571 INFO L82 PathProgramCache]: Analyzing trace with hash -151417790, now seen corresponding path program 837 times [2020-01-16 18:43:39,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:39,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849699880] [2020-01-16 18:43:39,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:40,165 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:40,171 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 18:43:40,171 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849699880] [2020-01-16 18:43:40,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:40,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:40,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357835750] [2020-01-16 18:43:40,172 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:40,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:40,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:40,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:40,172 INFO L87 Difference]: Start difference. First operand 1583 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:43:40,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:40,309 INFO L93 Difference]: Finished difference Result 3012 states and 11828 transitions. [2020-01-16 18:43:40,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:40,309 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:40,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:40,316 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:43:40,316 INFO L226 Difference]: Without dead ends: 2992 [2020-01-16 18:43:40,316 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 18:43:40,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2020-01-16 18:43:40,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1591. [2020-01-16 18:43:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 18:43:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7069 transitions. [2020-01-16 18:43:40,427 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7069 transitions. Word has length 28 [2020-01-16 18:43:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:40,427 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7069 transitions. [2020-01-16 18:43:40,427 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7069 transitions. [2020-01-16 18:43:40,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:40,429 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:40,429 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 18:43:40,430 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 18:43:40,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:40,430 INFO L82 PathProgramCache]: Analyzing trace with hash 21829902, now seen corresponding path program 838 times [2020-01-16 18:43:40,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:40,430 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863990562] [2020-01-16 18:43:40,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:41,002 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:41,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863990562] [2020-01-16 18:43:41,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:41,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:41,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927610203] [2020-01-16 18:43:41,009 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:41,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:41,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:41,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:41,009 INFO L87 Difference]: Start difference. First operand 1591 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:43:41,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:41,185 INFO L93 Difference]: Finished difference Result 3009 states and 11815 transitions. [2020-01-16 18:43:41,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:41,185 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:41,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:41,192 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:43:41,192 INFO L226 Difference]: Without dead ends: 2984 [2020-01-16 18:43:41,192 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 18:43:41,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-01-16 18:43:41,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1583. [2020-01-16 18:43:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:43:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7047 transitions. [2020-01-16 18:43:41,255 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7047 transitions. Word has length 28 [2020-01-16 18:43:41,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:41,255 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7047 transitions. [2020-01-16 18:43:41,255 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7047 transitions. [2020-01-16 18:43:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:41,257 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:41,257 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 18:43:41,257 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 18:43:41,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:41,258 INFO L82 PathProgramCache]: Analyzing trace with hash -2090741630, now seen corresponding path program 839 times [2020-01-16 18:43:41,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:41,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135556055] [2020-01-16 18:43:41,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:41,832 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:43:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:41,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135556055] [2020-01-16 18:43:41,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:41,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:41,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217500597] [2020-01-16 18:43:41,839 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:41,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:41,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:41,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:41,840 INFO L87 Difference]: Start difference. First operand 1583 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:43:42,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:42,039 INFO L93 Difference]: Finished difference Result 3007 states and 11812 transitions. [2020-01-16 18:43:42,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:42,040 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:42,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:42,047 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 18:43:42,047 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 18:43:42,047 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 18:43:42,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 18:43:42,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1590. [2020-01-16 18:43:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:43:42,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7060 transitions. [2020-01-16 18:43:42,111 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7060 transitions. Word has length 28 [2020-01-16 18:43:42,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:42,111 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7060 transitions. [2020-01-16 18:43:42,111 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:42,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7060 transitions. [2020-01-16 18:43:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:42,113 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:42,113 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 18:43:42,113 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 18:43:42,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:42,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1632770860, now seen corresponding path program 840 times [2020-01-16 18:43:42,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:42,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726361690] [2020-01-16 18:43:42,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:42,685 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:43:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:42,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726361690] [2020-01-16 18:43:42,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:42,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:42,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129382450] [2020-01-16 18:43:42,692 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:42,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:42,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:42,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:42,692 INFO L87 Difference]: Start difference. First operand 1590 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:43:42,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:42,876 INFO L93 Difference]: Finished difference Result 3006 states and 11803 transitions. [2020-01-16 18:43:42,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:42,877 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:42,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:42,884 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:43:42,884 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:43:42,884 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 18:43:42,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:43:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1553. [2020-01-16 18:43:42,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-01-16 18:43:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 6987 transitions. [2020-01-16 18:43:42,947 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 6987 transitions. Word has length 28 [2020-01-16 18:43:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:42,947 INFO L478 AbstractCegarLoop]: Abstraction has 1553 states and 6987 transitions. [2020-01-16 18:43:42,947 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 6987 transitions. [2020-01-16 18:43:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:42,949 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:42,949 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 18:43:42,950 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 18:43:42,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:42,950 INFO L82 PathProgramCache]: Analyzing trace with hash -471497986, now seen corresponding path program 841 times [2020-01-16 18:43:42,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:42,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060795957] [2020-01-16 18:43:42,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:43,505 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:43:43,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:43,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060795957] [2020-01-16 18:43:43,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:43,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:43,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371713257] [2020-01-16 18:43:43,513 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:43,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:43,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:43,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:43,513 INFO L87 Difference]: Start difference. First operand 1553 states and 6987 transitions. Second operand 11 states. [2020-01-16 18:43:43,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:43,694 INFO L93 Difference]: Finished difference Result 2917 states and 11586 transitions. [2020-01-16 18:43:43,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:43,694 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:43,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:43,701 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 18:43:43,701 INFO L226 Difference]: Without dead ends: 2902 [2020-01-16 18:43:43,702 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 18:43:43,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2020-01-16 18:43:43,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1576. [2020-01-16 18:43:43,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:43:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7075 transitions. [2020-01-16 18:43:43,764 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7075 transitions. Word has length 28 [2020-01-16 18:43:43,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:43,764 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7075 transitions. [2020-01-16 18:43:43,764 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:43,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7075 transitions. [2020-01-16 18:43:43,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:43,766 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:43,767 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 18:43:43,767 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 18:43:43,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:43,767 INFO L82 PathProgramCache]: Analyzing trace with hash 273204512, now seen corresponding path program 842 times [2020-01-16 18:43:43,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:43,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310042218] [2020-01-16 18:43:43,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:44,321 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:44,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:44,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310042218] [2020-01-16 18:43:44,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:44,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:44,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32114682] [2020-01-16 18:43:44,329 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:44,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:44,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:44,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:44,329 INFO L87 Difference]: Start difference. First operand 1576 states and 7075 transitions. Second operand 11 states. [2020-01-16 18:43:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:44,514 INFO L93 Difference]: Finished difference Result 2918 states and 11583 transitions. [2020-01-16 18:43:44,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:44,515 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:44,522 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 18:43:44,522 INFO L226 Difference]: Without dead ends: 2897 [2020-01-16 18:43:44,522 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 18:43:44,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-01-16 18:43:44,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1571. [2020-01-16 18:43:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:43:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7061 transitions. [2020-01-16 18:43:44,585 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7061 transitions. Word has length 28 [2020-01-16 18:43:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:44,585 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7061 transitions. [2020-01-16 18:43:44,585 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7061 transitions. [2020-01-16 18:43:44,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:44,587 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:44,587 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 18:43:44,587 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 18:43:44,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:44,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1139442972, now seen corresponding path program 843 times [2020-01-16 18:43:44,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:44,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625077657] [2020-01-16 18:43:44,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:45,136 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:43:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:45,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625077657] [2020-01-16 18:43:45,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:45,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:45,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260556375] [2020-01-16 18:43:45,144 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:45,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:45,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:45,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:45,144 INFO L87 Difference]: Start difference. First operand 1571 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:43:45,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:45,346 INFO L93 Difference]: Finished difference Result 2922 states and 11590 transitions. [2020-01-16 18:43:45,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:45,346 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:45,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:45,353 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:43:45,353 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 18:43:45,353 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 18:43:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 18:43:45,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1577. [2020-01-16 18:43:45,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:43:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7072 transitions. [2020-01-16 18:43:45,417 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7072 transitions. Word has length 28 [2020-01-16 18:43:45,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:45,417 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7072 transitions. [2020-01-16 18:43:45,417 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:45,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7072 transitions. [2020-01-16 18:43:45,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:45,419 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:45,419 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:45,419 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 18:43:45,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:45,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1666119328, now seen corresponding path program 844 times [2020-01-16 18:43:45,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:45,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048269804] [2020-01-16 18:43:45,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:45,974 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:43:45,981 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 18:43:45,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048269804] [2020-01-16 18:43:45,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:45,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:45,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458513432] [2020-01-16 18:43:45,982 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:45,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:45,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:45,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:45,982 INFO L87 Difference]: Start difference. First operand 1577 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:43:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:46,160 INFO L93 Difference]: Finished difference Result 2927 states and 11594 transitions. [2020-01-16 18:43:46,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:46,161 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:46,168 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 18:43:46,168 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 18:43:46,168 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 18:43:46,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 18:43:46,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1571. [2020-01-16 18:43:46,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:43:46,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7055 transitions. [2020-01-16 18:43:46,230 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7055 transitions. Word has length 28 [2020-01-16 18:43:46,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:46,230 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7055 transitions. [2020-01-16 18:43:46,230 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:46,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7055 transitions. [2020-01-16 18:43:46,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:46,232 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:46,232 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:46,232 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 18:43:46,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:46,232 INFO L82 PathProgramCache]: Analyzing trace with hash -799880868, now seen corresponding path program 845 times [2020-01-16 18:43:46,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:46,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600136589] [2020-01-16 18:43:46,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:46,781 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:46,787 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 18:43:46,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600136589] [2020-01-16 18:43:46,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:46,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:46,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545204170] [2020-01-16 18:43:46,788 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:46,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:46,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:46,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:46,788 INFO L87 Difference]: Start difference. First operand 1571 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:43:46,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:46,966 INFO L93 Difference]: Finished difference Result 2925 states and 11591 transitions. [2020-01-16 18:43:46,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:46,967 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:46,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:46,974 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 18:43:46,974 INFO L226 Difference]: Without dead ends: 2909 [2020-01-16 18:43:46,974 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 18:43:47,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2020-01-16 18:43:47,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 1578. [2020-01-16 18:43:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:43:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7068 transitions. [2020-01-16 18:43:47,037 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7068 transitions. Word has length 28 [2020-01-16 18:43:47,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:47,037 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7068 transitions. [2020-01-16 18:43:47,037 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:47,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7068 transitions. [2020-01-16 18:43:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:47,039 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:47,039 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:47,040 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 18:43:47,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:47,040 INFO L82 PathProgramCache]: Analyzing trace with hash -55178370, now seen corresponding path program 846 times [2020-01-16 18:43:47,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:47,040 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213520863] [2020-01-16 18:43:47,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:47,632 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:47,638 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 18:43:47,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213520863] [2020-01-16 18:43:47,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:47,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:47,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369312692] [2020-01-16 18:43:47,639 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:47,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:47,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:47,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:47,639 INFO L87 Difference]: Start difference. First operand 1578 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:43:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:43:47,787 INFO L93 Difference]: Finished difference Result 2929 states and 11592 transitions. [2020-01-16 18:43:47,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:43:47,787 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:43:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:43:47,794 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:43:47,794 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 18:43:47,794 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 18:43:47,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 18:43:47,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1565. [2020-01-16 18:43:47,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:43:47,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7038 transitions. [2020-01-16 18:43:47,857 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7038 transitions. Word has length 28 [2020-01-16 18:43:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:43:47,857 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7038 transitions. [2020-01-16 18:43:47,857 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:43:47,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7038 transitions. [2020-01-16 18:43:47,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:43:47,859 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:43:47,859 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:43:47,859 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 18:43:47,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:43:47,859 INFO L82 PathProgramCache]: Analyzing trace with hash 248514488, now seen corresponding path program 847 times [2020-01-16 18:43:47,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:43:47,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839715007] [2020-01-16 18:43:47,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:43:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:43:48,404 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:43:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:43:48,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839715007] [2020-01-16 18:43:48,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:43:48,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:43:48,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512186073] [2020-01-16 18:43:48,411 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:43:48,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:43:48,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:43:48,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:43:48,412 INFO L87 Difference]: Start difference. First operand 1565 states and 7038 transitions. Second operand 11 states. Received shutdown request... [2020-01-16 18:43:48,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:43:48,495 WARN L543 AbstractCegarLoop]: Verification canceled [2020-01-16 18:43:48,499 WARN L227 ceAbstractionStarter]: Timeout [2020-01-16 18:43:48,499 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 06:43:48 BasicIcfg [2020-01-16 18:43:48,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 18:43:48,500 INFO L168 Benchmark]: Toolchain (without parser) took 779624.71 ms. Allocated memory was 138.4 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 120.3 MB in the beginning and 712.5 MB in the end (delta: -592.2 MB). Peak memory consumption was 968.6 MB. Max. memory is 7.1 GB. [2020-01-16 18:43:48,500 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.42 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 18:43:48,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.41 ms. Allocated memory is still 138.4 MB. Free memory was 120.1 MB in the beginning and 118.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-01-16 18:43:48,501 INFO L168 Benchmark]: Boogie Preprocessor took 28.02 ms. Allocated memory is still 138.4 MB. Free memory was 118.5 MB in the beginning and 117.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-01-16 18:43:48,501 INFO L168 Benchmark]: RCFGBuilder took 273.46 ms. Allocated memory is still 138.4 MB. Free memory was 117.2 MB in the beginning and 103.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-01-16 18:43:48,501 INFO L168 Benchmark]: TraceAbstraction took 779278.25 ms. Allocated memory was 138.4 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 103.1 MB in the beginning and 712.5 MB in the end (delta: -609.4 MB). Peak memory consumption was 951.4 MB. Max. memory is 7.1 GB. [2020-01-16 18:43:48,501 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 0.42 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 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 40.41 ms. Allocated memory is still 138.4 MB. Free memory was 120.1 MB in the beginning and 118.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.02 ms. Allocated memory is still 138.4 MB. Free memory was 118.5 MB in the beginning and 117.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 273.46 ms. Allocated memory is still 138.4 MB. Free memory was 117.2 MB in the beginning and 103.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 779278.25 ms. Allocated memory was 138.4 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 103.1 MB in the beginning and 712.5 MB in the end (delta: -609.4 MB). Peak memory consumption was 951.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 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 constructing difference of abstraction (1565states) and FLOYD_HOARE automaton (currently 7 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (982 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 778.9s, OverallIterations: 855, TraceHistogramMax: 1, AutomataDifference: 189.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 104556 SDtfs, 153174 SDslu, 277227 SDs, 0 SdLazy, 75188 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9340 GetRequests, 863 SyntacticMatches, 0 SemanticMatches, 8477 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5929 ImplicationChecksByTransitivity, 563.4s 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: 62.4s AutomataMinimizationTime, 854 MinimizatonAttempts, 1156002 StatesRemovedByMinimization, 846 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 510.5s InterpolantComputationTime, 23940 NumberOfCodeBlocks, 23940 NumberOfCodeBlocksAsserted, 855 NumberOfCheckSat, 23085 ConstructedInterpolants, 0 QuantifiedInterpolants, 20482065 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 855 InterpolantComputations, 855 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