/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-PN-NoLbe-MCR.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 23:37:50,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 23:37:50,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 23:37:51,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-01-16 23:37:51,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 23:37:51,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 23:37:51,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 23:37:51,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 23:37:51,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 23:37:51,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 23:37:51,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 23:37:51,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 23:37:51,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 23:37:51,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 23:37:51,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 23:37:51,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 23:37:51,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 23:37:51,062 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-PN-NoLbe-MCR.epf [2020-01-16 23:37:51,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 23:37:51,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 23:37:51,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 23:37:51,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 23:37:51,078 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 23:37:51,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 23:37:51,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 23:37:51,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 23:37:51,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 23:37:51,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 23:37:51,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 23:37:51,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 23:37:51,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 23:37:51,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 23:37:51,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 23:37:51,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 23:37:51,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 23:37:51,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 23:37:51,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 23:37:51,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 23:37:51,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 23:37:51,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 23:37:51,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 23:37:51,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 23:37:51,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 23:37:51,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 23:37:51,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 23:37:51,082 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-01-16 23:37:51,082 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-01-16 23:37:51,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-01-16 23:37:51,083 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-01-16 23:37:51,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 23:37:51,384 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 23:37:51,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 23:37:51,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 23:37:51,412 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 23:37:51,414 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 23:37:51,415 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2020-01-16 23:37:51,416 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2020-01-16 23:37:51,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 23:37:51,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 23:37:51,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 23:37:51,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 23:37:51,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 23:37:51,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:37:51" (1/1) ... [2020-01-16 23:37:51,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:37:51" (1/1) ... [2020-01-16 23:37:51,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 23:37:51,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 23:37:51,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 23:37:51,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 23:37:51,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:37:51" (1/1) ... [2020-01-16 23:37:51,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:37:51" (1/1) ... [2020-01-16 23:37:51,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:37:51" (1/1) ... [2020-01-16 23:37:51,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:37:51" (1/1) ... [2020-01-16 23:37:51,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:37:51" (1/1) ... [2020-01-16 23:37:51,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:37:51" (1/1) ... [2020-01-16 23:37:51,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:37:51" (1/1) ... [2020-01-16 23:37:51,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 23:37:51,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 23:37:51,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 23:37:51,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 23:37:51,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:37:51" (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 23:37:51,605 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 23:37:51,605 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 23:37:51,605 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 23:37:51,606 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 23:37:51,606 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 23:37:51,606 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 23:37:51,606 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 23:37:51,606 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 23:37:51,606 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 23:37:51,607 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 23:37:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 23:37:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 23:37:51,607 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 23:37:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 23:37:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 23:37:51,608 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 23:37:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 23:37:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 23:37:51,609 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 23:37:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 23:37:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 23:37:51,611 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 23:37:51,793 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 23:37:51,793 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 23:37:51,795 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 11:37:51 BoogieIcfgContainer [2020-01-16 23:37:51,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 23:37:51,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 23:37:51,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 23:37:51,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 23:37:51,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:37:51" (1/2) ... [2020-01-16 23:37:51,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4936d1 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 11:37:51, skipping insertion in model container [2020-01-16 23:37:51,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 11:37:51" (2/2) ... [2020-01-16 23:37:51,802 INFO L109 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2020-01-16 23:37:51,812 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 23:37:51,819 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 23:37:51,821 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 23:37:52,065 INFO L250 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-01-16 23:37:52,086 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 23:37:52,086 INFO L375 AbstractCegarLoop]: Hoare is false [2020-01-16 23:37:52,086 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 23:37:52,087 INFO L377 AbstractCegarLoop]: Backedges is MCR [2020-01-16 23:37:52,087 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 23:37:52,087 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 23:37:52,087 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 23:37:52,087 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 23:37:52,221 INFO L129 PetriNetUnfolder]: 129/210 cut-off events. [2020-01-16 23:37:52,221 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-01-16 23:37:52,222 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:37:52,223 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:37:52,223 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:37:52,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:37:52,230 INFO L82 PathProgramCache]: Analyzing trace with hash -637364193, now seen corresponding path program 1 times [2020-01-16 23:37:52,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:37:52,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348513582] [2020-01-16 23:37:52,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:37:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:37:52,411 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 23:37:52,412 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348513582] [2020-01-16 23:37:52,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:37:52,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:37:52,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2088037010] [2020-01-16 23:37:52,415 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:37:52,429 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:37:52,691 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-01-16 23:37:52,691 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:37:52,732 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 8 times. [2020-01-16 23:37:52,734 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:37:52,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:37:52,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:37:52,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:37:52,759 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2020-01-16 23:37:52,761 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 63 transitions. Second operand 3 states. [2020-01-16 23:37:52,762 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:37:52,762 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2020-01-16 23:37:52,764 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:37:52,847 INFO L129 PetriNetUnfolder]: 74/142 cut-off events. [2020-01-16 23:37:52,847 INFO L130 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2020-01-16 23:37:52,855 INFO L76 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 142 events. 74/142 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 432 event pairs. 16/157 useless extension candidates. Maximal degree in co-relation 178. Up to 30 conditions per place. [2020-01-16 23:37:52,856 INFO L123 encePairwiseOnDemand]: 59/63 looper letters, 3 selfloop transitions, 4 changer transitions [2020-01-16 23:37:52,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:37:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:37:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2020-01-16 23:37:52,863 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2020-01-16 23:37:52,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2020-01-16 23:37:52,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2020-01-16 23:37:52,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:37:52,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2020-01-16 23:37:52,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:37:52,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:37:52,879 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:37:52,881 INFO L174 Difference]: Start difference. First operand has 52 places, 63 transitions. Second operand 3 states and 175 transitions. [2020-01-16 23:37:52,882 INFO L199 Difference]: Finished difference. Result has 54 places, 54 transitions [2020-01-16 23:37:52,885 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2020-01-16 23:37:52,887 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 54 places, 54 transitions [2020-01-16 23:37:52,887 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 54 places, 54 transitions [2020-01-16 23:37:52,944 INFO L129 PetriNetUnfolder]: 74/142 cut-off events. [2020-01-16 23:37:52,944 INFO L130 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2020-01-16 23:37:52,949 INFO L76 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 142 events. 74/142 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 428 event pairs. 0/141 useless extension candidates. Maximal degree in co-relation 263. Up to 30 conditions per place. [2020-01-16 23:37:52,960 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 8 of 54 places, 0 of 54 transitions, 2 of 227 flow. [2020-01-16 23:37:52,961 INFO L478 AbstractCegarLoop]: Abstraction has has 46 places, 54 transitions [2020-01-16 23:37:52,961 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:37:52,996 INFO L129 PetriNetUnfolder]: 74/139 cut-off events. [2020-01-16 23:37:52,996 INFO L130 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2020-01-16 23:37:52,997 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:37:52,997 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:37:52,997 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:37:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:37:52,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1127303333, now seen corresponding path program 1 times [2020-01-16 23:37:52,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:37:52,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696317981] [2020-01-16 23:37:52,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:37:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:37:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:37:53,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696317981] [2020-01-16 23:37:53,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:37:53,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:37:53,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [77832606] [2020-01-16 23:37:53,033 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:37:53,036 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:37:53,189 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-01-16 23:37:53,190 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:37:53,202 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2020-01-16 23:37:53,205 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:37:53,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:37:53,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:37:53,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:37:53,211 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2020-01-16 23:37:53,211 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 54 transitions. Second operand 3 states. [2020-01-16 23:37:53,212 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:37:53,212 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2020-01-16 23:37:53,212 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:37:53,264 INFO L129 PetriNetUnfolder]: 70/137 cut-off events. [2020-01-16 23:37:53,264 INFO L130 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2020-01-16 23:37:53,266 INFO L76 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 137 events. 70/137 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 428 event pairs. 1/137 useless extension candidates. Maximal degree in co-relation 183. Up to 30 conditions per place. [2020-01-16 23:37:53,268 INFO L123 encePairwiseOnDemand]: 61/63 looper letters, 5 selfloop transitions, 2 changer transitions [2020-01-16 23:37:53,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:37:53,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:37:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2020-01-16 23:37:53,272 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2020-01-16 23:37:53,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2020-01-16 23:37:53,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2020-01-16 23:37:53,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:37:53,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2020-01-16 23:37:53,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:37:53,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:37:53,276 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:37:53,277 INFO L174 Difference]: Start difference. First operand has 46 places, 54 transitions. Second operand 3 states and 175 transitions. [2020-01-16 23:37:53,278 INFO L199 Difference]: Finished difference. Result has 48 places, 53 transitions [2020-01-16 23:37:53,279 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=48, PETRI_TRANSITIONS=53} [2020-01-16 23:37:53,283 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 48 places, 53 transitions [2020-01-16 23:37:53,283 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 48 places, 53 transitions [2020-01-16 23:37:53,299 INFO L129 PetriNetUnfolder]: 70/137 cut-off events. [2020-01-16 23:37:53,299 INFO L130 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2020-01-16 23:37:53,301 INFO L76 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 137 events. 70/137 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 411 event pairs. 0/136 useless extension candidates. Maximal degree in co-relation 258. Up to 30 conditions per place. [2020-01-16 23:37:53,302 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 48 places, 0 of 53 transitions, 1 of 222 flow. [2020-01-16 23:37:53,302 INFO L478 AbstractCegarLoop]: Abstraction has has 47 places, 53 transitions [2020-01-16 23:37:53,302 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:37:53,317 INFO L129 PetriNetUnfolder]: 70/134 cut-off events. [2020-01-16 23:37:53,317 INFO L130 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2020-01-16 23:37:53,317 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:37:53,318 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:37:53,318 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:37:53,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:37:53,318 INFO L82 PathProgramCache]: Analyzing trace with hash -758229763, now seen corresponding path program 1 times [2020-01-16 23:37:53,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:37:53,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015242750] [2020-01-16 23:37:53,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:37:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:37:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:37:53,386 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015242750] [2020-01-16 23:37:53,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:37:53,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:37:53,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1332966226] [2020-01-16 23:37:53,387 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:37:53,390 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:37:53,564 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-01-16 23:37:53,564 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:37:53,573 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 4 times. [2020-01-16 23:37:53,574 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:37:53,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:37:53,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:37:53,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:37:53,575 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2020-01-16 23:37:53,576 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 53 transitions. Second operand 3 states. [2020-01-16 23:37:53,576 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:37:53,576 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2020-01-16 23:37:53,576 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:37:53,605 INFO L129 PetriNetUnfolder]: 55/117 cut-off events. [2020-01-16 23:37:53,606 INFO L130 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2020-01-16 23:37:53,607 INFO L76 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 117 events. 55/117 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 328 event pairs. 4/120 useless extension candidates. Maximal degree in co-relation 139. Up to 30 conditions per place. [2020-01-16 23:37:53,607 INFO L123 encePairwiseOnDemand]: 60/63 looper letters, 4 selfloop transitions, 3 changer transitions [2020-01-16 23:37:53,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:37:53,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:37:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2020-01-16 23:37:53,609 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2020-01-16 23:37:53,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2020-01-16 23:37:53,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2020-01-16 23:37:53,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:37:53,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2020-01-16 23:37:53,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:37:53,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:37:53,612 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:37:53,612 INFO L174 Difference]: Start difference. First operand has 47 places, 53 transitions. Second operand 3 states and 175 transitions. [2020-01-16 23:37:53,612 INFO L199 Difference]: Finished difference. Result has 49 places, 51 transitions [2020-01-16 23:37:53,613 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2020-01-16 23:37:53,613 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 49 places, 51 transitions [2020-01-16 23:37:53,613 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions [2020-01-16 23:37:53,626 INFO L129 PetriNetUnfolder]: 55/117 cut-off events. [2020-01-16 23:37:53,626 INFO L130 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2020-01-16 23:37:53,627 INFO L76 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 117 events. 55/117 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 335 event pairs. 0/116 useless extension candidates. Maximal degree in co-relation 215. Up to 30 conditions per place. [2020-01-16 23:37:53,628 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 49 places, 0 of 51 transitions, 1 of 213 flow. [2020-01-16 23:37:53,628 INFO L478 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions [2020-01-16 23:37:53,629 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:37:53,641 INFO L129 PetriNetUnfolder]: 55/114 cut-off events. [2020-01-16 23:37:53,641 INFO L130 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2020-01-16 23:37:53,641 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:37:53,642 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:37:53,642 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:37:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:37:53,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1464742527, now seen corresponding path program 1 times [2020-01-16 23:37:53,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:37:53,643 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550242674] [2020-01-16 23:37:53,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:37:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:37:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:37:53,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550242674] [2020-01-16 23:37:53,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:37:53,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:37:53,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1848110638] [2020-01-16 23:37:53,682 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:37:53,684 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:37:53,782 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-01-16 23:37:53,782 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:37:53,790 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2020-01-16 23:37:53,791 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:37:53,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:37:53,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:37:53,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:37:53,794 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2020-01-16 23:37:53,794 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions. Second operand 3 states. [2020-01-16 23:37:53,794 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:37:53,794 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2020-01-16 23:37:53,795 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:37:53,819 INFO L129 PetriNetUnfolder]: 15/57 cut-off events. [2020-01-16 23:37:53,819 INFO L130 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2020-01-16 23:37:53,820 INFO L76 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 57 events. 15/57 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 114 event pairs. 10/66 useless extension candidates. Maximal degree in co-relation 67. Up to 10 conditions per place. [2020-01-16 23:37:53,820 INFO L123 encePairwiseOnDemand]: 58/63 looper letters, 2 selfloop transitions, 5 changer transitions [2020-01-16 23:37:53,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:37:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:37:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2020-01-16 23:37:53,822 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2020-01-16 23:37:53,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2020-01-16 23:37:53,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2020-01-16 23:37:53,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:37:53,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2020-01-16 23:37:53,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:37:53,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:37:53,824 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:37:53,825 INFO L174 Difference]: Start difference. First operand has 48 places, 51 transitions. Second operand 3 states and 175 transitions. [2020-01-16 23:37:53,825 INFO L199 Difference]: Finished difference. Result has 50 places, 47 transitions [2020-01-16 23:37:53,825 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2020-01-16 23:37:53,826 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 50 places, 47 transitions [2020-01-16 23:37:53,826 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 50 places, 47 transitions [2020-01-16 23:37:53,832 INFO L129 PetriNetUnfolder]: 15/57 cut-off events. [2020-01-16 23:37:53,832 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2020-01-16 23:37:53,833 INFO L76 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 57 events. 15/57 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 117 event pairs. 0/56 useless extension candidates. Maximal degree in co-relation 89. Up to 10 conditions per place. [2020-01-16 23:37:53,834 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 50 places, 0 of 47 transitions, 1 of 194 flow. [2020-01-16 23:37:53,834 INFO L478 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions [2020-01-16 23:37:53,834 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:37:53,841 INFO L129 PetriNetUnfolder]: 15/55 cut-off events. [2020-01-16 23:37:53,841 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2020-01-16 23:37:53,841 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:37:53,842 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:37:53,842 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:37:53,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:37:53,842 INFO L82 PathProgramCache]: Analyzing trace with hash 764025465, now seen corresponding path program 1 times [2020-01-16 23:37:53,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:37:53,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699555044] [2020-01-16 23:37:53,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:37:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:37:53,875 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 23:37:53,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699555044] [2020-01-16 23:37:53,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:37:53,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:37:53,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [976551836] [2020-01-16 23:37:53,882 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:37:53,883 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:37:54,015 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-01-16 23:37:54,016 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:37:54,026 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 8 times. [2020-01-16 23:37:54,026 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:37:54,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:37:54,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:37:54,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:37:54,029 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2020-01-16 23:37:54,029 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions. Second operand 3 states. [2020-01-16 23:37:54,029 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:37:54,030 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2020-01-16 23:37:54,031 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:37:54,049 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2020-01-16 23:37:54,050 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2020-01-16 23:37:54,050 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 27 events. 0/27 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs. 5/31 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2020-01-16 23:37:54,051 INFO L123 encePairwiseOnDemand]: 57/63 looper letters, 1 selfloop transitions, 6 changer transitions [2020-01-16 23:37:54,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:37:54,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:37:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2020-01-16 23:37:54,052 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2020-01-16 23:37:54,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2020-01-16 23:37:54,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2020-01-16 23:37:54,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:37:54,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2020-01-16 23:37:54,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:37:54,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:37:54,054 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:37:54,054 INFO L174 Difference]: Start difference. First operand has 49 places, 47 transitions. Second operand 3 states and 175 transitions. [2020-01-16 23:37:54,055 INFO L199 Difference]: Finished difference. Result has 51 places, 27 transitions [2020-01-16 23:37:54,055 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=51, PETRI_TRANSITIONS=27} [2020-01-16 23:37:54,057 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 51 places, 27 transitions [2020-01-16 23:37:54,057 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 51 places, 27 transitions [2020-01-16 23:37:54,066 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2020-01-16 23:37:54,066 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-01-16 23:37:54,066 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 27 events. 0/27 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs. 0/26 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2020-01-16 23:37:54,071 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 51 places, 0 of 27 transitions, 1 of 95 flow. [2020-01-16 23:37:54,071 INFO L478 AbstractCegarLoop]: Abstraction has has 50 places, 27 transitions [2020-01-16 23:37:54,072 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:37:54,076 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2020-01-16 23:37:54,077 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-01-16 23:37:54,077 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:37:54,077 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:37:54,077 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:37:54,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:37:54,078 INFO L82 PathProgramCache]: Analyzing trace with hash -252117375, now seen corresponding path program 1 times [2020-01-16 23:37:54,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:37:54,078 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307688744] [2020-01-16 23:37:54,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:37:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:37:54,539 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 23:37:54,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307688744] [2020-01-16 23:37:54,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:37:54,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 23:37:54,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [763226917] [2020-01-16 23:37:54,540 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:37:54,542 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:37:54,692 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-01-16 23:37:54,692 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:37:56,482 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-01-16 23:38:00,600 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 209 times. [2020-01-16 23:38:00,600 INFO L458 AbstractCegarLoop]: Interpolant automaton has 96 states [2020-01-16 23:38:00,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:38:00,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2020-01-16 23:38:00,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=972, Invalid=8148, Unknown=0, NotChecked=0, Total=9120 [2020-01-16 23:38:00,608 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 63 [2020-01-16 23:38:00,609 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 27 transitions. Second operand 96 states. [2020-01-16 23:38:00,610 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:38:00,610 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 63 [2020-01-16 23:38:00,610 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:38:14,984 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 28 [2020-01-16 23:38:15,171 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 32 [2020-01-16 23:38:15,366 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-01-16 23:38:15,594 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-01-16 23:38:15,917 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-01-16 23:38:16,715 INFO L129 PetriNetUnfolder]: 379/798 cut-off events. [2020-01-16 23:38:16,715 INFO L130 PetriNetUnfolder]: For 441/441 co-relation queries the response was YES. [2020-01-16 23:38:16,722 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 798 events. 379/798 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4583 event pairs. 0/798 useless extension candidates. Maximal degree in co-relation 1421. Up to 90 conditions per place. [2020-01-16 23:38:16,724 INFO L123 encePairwiseOnDemand]: 51/63 looper letters, 120 selfloop transitions, 273 changer transitions [2020-01-16 23:38:16,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-01-16 23:38:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-01-16 23:38:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 2313 transitions. [2020-01-16 23:38:16,730 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.38244047619047616 [2020-01-16 23:38:16,730 INFO L72 ComplementDD]: Start complementDD. Operand 96 states and 2313 transitions. [2020-01-16 23:38:16,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 2313 transitions. [2020-01-16 23:38:16,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:38:16,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 96 states and 2313 transitions. [2020-01-16 23:38:16,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 97 states. [2020-01-16 23:38:16,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 97 states. [2020-01-16 23:38:16,750 INFO L81 ComplementDD]: Finished complementDD. Result 97 states. [2020-01-16 23:38:16,750 INFO L174 Difference]: Start difference. First operand has 50 places, 27 transitions. Second operand 96 states and 2313 transitions. [2020-01-16 23:38:16,756 INFO L199 Difference]: Finished difference. Result has 176 places, 292 transitions [2020-01-16 23:38:16,757 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=1498, PETRI_PLACES=176, PETRI_TRANSITIONS=292} [2020-01-16 23:38:16,757 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 176 places, 292 transitions [2020-01-16 23:38:16,757 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 176 places, 292 transitions [2020-01-16 23:38:16,831 INFO L129 PetriNetUnfolder]: 212/463 cut-off events. [2020-01-16 23:38:16,831 INFO L130 PetriNetUnfolder]: For 687/709 co-relation queries the response was YES. [2020-01-16 23:38:16,839 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 463 events. 212/463 cut-off events. For 687/709 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2663 event pairs. 7/469 useless extension candidates. Maximal degree in co-relation 991. Up to 62 conditions per place. [2020-01-16 23:38:16,842 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 2 of 176 places, 0 of 292 transitions, 2 of 1498 flow. [2020-01-16 23:38:16,842 INFO L478 AbstractCegarLoop]: Abstraction has has 174 places, 292 transitions [2020-01-16 23:38:16,843 INFO L479 AbstractCegarLoop]: Interpolant automaton has 96 states. [2020-01-16 23:38:16,942 INFO L129 PetriNetUnfolder]: 212/465 cut-off events. [2020-01-16 23:38:16,942 INFO L130 PetriNetUnfolder]: For 2135/2147 co-relation queries the response was YES. [2020-01-16 23:38:16,948 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 11:38:16 BasicIcfg [2020-01-16 23:38:16,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 23:38:16,953 INFO L168 Benchmark]: Toolchain (without parser) took 25492.82 ms. Allocated memory was 144.7 MB in the beginning and 683.7 MB in the end (delta: 539.0 MB). Free memory was 119.8 MB in the beginning and 260.7 MB in the end (delta: -140.9 MB). Peak memory consumption was 398.1 MB. Max. memory is 7.1 GB. [2020-01-16 23:38:16,954 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 144.7 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-01-16 23:38:16,956 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.60 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 117.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-01-16 23:38:16,962 INFO L168 Benchmark]: Boogie Preprocessor took 23.02 ms. Allocated memory is still 144.7 MB. Free memory was 117.7 MB in the beginning and 116.8 MB in the end (delta: 873.6 kB). Peak memory consumption was 873.6 kB. Max. memory is 7.1 GB. [2020-01-16 23:38:16,963 INFO L168 Benchmark]: RCFGBuilder took 275.29 ms. Allocated memory is still 144.7 MB. Free memory was 116.8 MB in the beginning and 104.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-01-16 23:38:16,965 INFO L168 Benchmark]: TraceAbstraction took 25152.58 ms. Allocated memory was 144.7 MB in the beginning and 683.7 MB in the end (delta: 539.0 MB). Free memory was 104.3 MB in the beginning and 260.7 MB in the end (delta: -156.4 MB). Peak memory consumption was 382.6 MB. Max. memory is 7.1 GB. [2020-01-16 23:38:16,975 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 144.7 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.60 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 117.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.02 ms. Allocated memory is still 144.7 MB. Free memory was 117.7 MB in the beginning and 116.8 MB in the end (delta: 873.6 kB). Peak memory consumption was 873.6 kB. Max. memory is 7.1 GB. * RCFGBuilder took 275.29 ms. Allocated memory is still 144.7 MB. Free memory was 116.8 MB in the beginning and 104.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25152.58 ms. Allocated memory was 144.7 MB in the beginning and 683.7 MB in the end (delta: 539.0 MB). Free memory was 104.3 MB in the beginning and 260.7 MB in the end (delta: -156.4 MB). Peak memory consumption was 382.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 24.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 16.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 293 SDtfs, 557 SDslu, 4970 SDs, 0 SdLazy, 8105 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7232 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 14 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 16296 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 proved your program to be correct! Received shutdown request...