/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-SemanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 23:00:03,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 23:00:03,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 23:00:03,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 23:00:03,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 23:00:03,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 23:00:03,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 23:00:03,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 23:00:03,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 23:00:03,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 23:00:03,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 23:00:03,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 23:00:03,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 23:00:03,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 23:00:03,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 23:00:03,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 23:00:03,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 23:00:03,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 23:00:03,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 23:00:03,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 23:00:03,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 23:00:03,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 23:00:03,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 23:00:03,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 23:00:03,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 23:00:03,557 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-SemanticLbe.epf [2020-02-10 23:00:03,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 23:00:03,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 23:00:03,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 23:00:03,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 23:00:03,573 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 23:00:03,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 23:00:03,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 23:00:03,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 23:00:03,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 23:00:03,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 23:00:03,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 23:00:03,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 23:00:03,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 23:00:03,575 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 23:00:03,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 23:00:03,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 23:00:03,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 23:00:03,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 23:00:03,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 23:00:03,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 23:00:03,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 23:00:03,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:00:03,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 23:00:03,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 23:00:03,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 23:00:03,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 23:00:03,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 23:00:03,578 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-10 23:00:03,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 23:00:03,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 23:00:03,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 23:00:03,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 23:00:03,884 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 23:00:03,885 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 23:00:03,885 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl [2020-02-10 23:00:03,886 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl' [2020-02-10 23:00:03,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 23:00:03,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 23:00:03,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 23:00:03,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 23:00:03,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 23:00:03,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:03" (1/1) ... [2020-02-10 23:00:03,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:03" (1/1) ... [2020-02-10 23:00:03,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 23:00:03,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 23:00:03,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 23:00:03,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 23:00:03,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:03" (1/1) ... [2020-02-10 23:00:03,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:03" (1/1) ... [2020-02-10 23:00:03,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:03" (1/1) ... [2020-02-10 23:00:03,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:03" (1/1) ... [2020-02-10 23:00:03,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:03" (1/1) ... [2020-02-10 23:00:03,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:03" (1/1) ... [2020-02-10 23:00:03,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:03" (1/1) ... [2020-02-10 23:00:03,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 23:00:03,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 23:00:03,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 23:00:03,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 23:00:03,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:03" (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 [2020-02-10 23:00:04,048 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 23:00:04,049 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 23:00:04,049 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 23:00:04,049 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 23:00:04,049 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 23:00:04,049 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 23:00:04,050 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 23:00:04,050 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 23:00:04,050 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 23:00:04,050 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 23:00:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 23:00:04,051 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 23:00:04,051 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 23:00:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 23:00:04,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 23:00:04,052 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 23:00:04,260 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 23:00:04,261 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 23:00:04,264 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:00:04 BoogieIcfgContainer [2020-02-10 23:00:04,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 23:00:04,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 23:00:04,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 23:00:04,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 23:00:04,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:03" (1/2) ... [2020-02-10 23:00:04,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25979577 and model type example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:00:04, skipping insertion in model container [2020-02-10 23:00:04,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:00:04" (2/2) ... [2020-02-10 23:00:04,279 INFO L109 eAbstractionObserver]: Analyzing ICFG example_4.bpl [2020-02-10 23:00:04,291 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 23:00:04,300 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 23:00:04,302 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 23:00:04,462 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-02-10 23:00:04,492 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 23:00:04,492 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-10 23:00:04,492 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 23:00:04,493 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 23:00:04,494 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 23:00:04,494 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 23:00:04,494 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 23:00:04,494 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 23:00:04,507 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions [2020-02-10 23:00:04,563 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2020-02-10 23:00:04,563 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-02-10 23:00:04,574 INFO L76 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 47 events. 17/47 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs. 0/46 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2020-02-10 23:00:04,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 35 transitions [2020-02-10 23:00:04,586 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 29 transitions [2020-02-10 23:00:04,590 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 29 transitions [2020-02-10 23:00:04,591 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 30 places, 29 transitions [2020-02-10 23:00:04,609 INFO L129 PetriNetUnfolder]: 17/45 cut-off events. [2020-02-10 23:00:04,609 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-02-10 23:00:04,611 INFO L76 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 45 events. 17/45 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 100 event pairs. 0/45 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2020-02-10 23:00:04,612 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 30 places, 29 transitions [2020-02-10 23:00:04,629 INFO L129 PetriNetUnfolder]: 17/45 cut-off events. [2020-02-10 23:00:04,630 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-02-10 23:00:04,631 INFO L76 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 45 events. 17/45 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 100 event pairs. 0/45 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2020-02-10 23:00:04,632 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 216 [2020-02-10 23:00:04,634 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-02-10 23:00:04,689 INFO L206 etLargeBlockEncoding]: Checked pairs total: 66 [2020-02-10 23:00:04,689 INFO L214 etLargeBlockEncoding]: Total number of compositions: 4 [2020-02-10 23:00:04,690 INFO L160 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 104 [2020-02-10 23:00:04,708 INFO L129 PetriNetUnfolder]: 17/40 cut-off events. [2020-02-10 23:00:04,708 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-02-10 23:00:04,709 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:04,710 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:04,711 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:04,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:04,718 INFO L82 PathProgramCache]: Analyzing trace with hash -310091457, now seen corresponding path program 1 times [2020-02-10 23:00:04,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:04,728 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610431035] [2020-02-10 23:00:04,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:04,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610431035] [2020-02-10 23:00:04,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:04,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:04,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687823507] [2020-02-10 23:00:04,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:04,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:04,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:04,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:04,900 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2020-02-10 23:00:04,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions. Second operand 3 states. [2020-02-10 23:00:04,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:04,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2020-02-10 23:00:04,904 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:04,938 INFO L129 PetriNetUnfolder]: 14/37 cut-off events. [2020-02-10 23:00:04,938 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2020-02-10 23:00:04,939 INFO L76 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 37 events. 14/37 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 73 event pairs. 1/38 useless extension candidates. Maximal degree in co-relation 35. Up to 12 conditions per place. [2020-02-10 23:00:04,942 INFO L145 encePairwiseOnDemand]: 37/39 looper letters, 3 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2020-02-10 23:00:04,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:04,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2020-02-10 23:00:04,964 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9145299145299145 [2020-02-10 23:00:04,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2020-02-10 23:00:04,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2020-02-10 23:00:04,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:04,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2020-02-10 23:00:04,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:04,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:04,985 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:04,987 INFO L178 Difference]: Start difference. First operand has 26 places, 25 transitions. Second operand 3 states and 107 transitions. [2020-02-10 23:00:04,989 INFO L206 Difference]: Finished difference. Result has 28 places, 24 transitions [2020-02-10 23:00:04,992 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2020-02-10 23:00:04,993 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions [2020-02-10 23:00:05,005 INFO L129 PetriNetUnfolder]: 14/37 cut-off events. [2020-02-10 23:00:05,006 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2020-02-10 23:00:05,007 INFO L76 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 37 events. 14/37 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 74 event pairs. 0/37 useless extension candidates. Maximal degree in co-relation 67. Up to 12 conditions per place. [2020-02-10 23:00:05,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions [2020-02-10 23:00:05,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 24 transitions [2020-02-10 23:00:05,010 INFO L479 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions [2020-02-10 23:00:05,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:05,028 INFO L129 PetriNetUnfolder]: 14/36 cut-off events. [2020-02-10 23:00:05,028 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2020-02-10 23:00:05,029 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:05,029 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:05,029 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:05,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:05,033 INFO L82 PathProgramCache]: Analyzing trace with hash 111906175, now seen corresponding path program 1 times [2020-02-10 23:00:05,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:05,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921250115] [2020-02-10 23:00:05,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:05,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921250115] [2020-02-10 23:00:05,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:05,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:05,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478185909] [2020-02-10 23:00:05,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:05,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:05,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:05,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:05,081 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2020-02-10 23:00:05,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions. Second operand 3 states. [2020-02-10 23:00:05,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:05,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2020-02-10 23:00:05,082 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:05,095 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2020-02-10 23:00:05,095 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-02-10 23:00:05,096 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 19 events. 3/19 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs. 6/25 useless extension candidates. Maximal degree in co-relation 33. Up to 4 conditions per place. [2020-02-10 23:00:05,097 INFO L145 encePairwiseOnDemand]: 35/39 looper letters, 1 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2020-02-10 23:00:05,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:05,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2020-02-10 23:00:05,099 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9145299145299145 [2020-02-10 23:00:05,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2020-02-10 23:00:05,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2020-02-10 23:00:05,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:05,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2020-02-10 23:00:05,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:05,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:05,103 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:05,103 INFO L178 Difference]: Start difference. First operand has 28 places, 24 transitions. Second operand 3 states and 107 transitions. [2020-02-10 23:00:05,103 INFO L206 Difference]: Finished difference. Result has 30 places, 18 transitions [2020-02-10 23:00:05,104 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2020-02-10 23:00:05,104 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 30 places, 18 transitions [2020-02-10 23:00:05,113 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2020-02-10 23:00:05,113 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-02-10 23:00:05,114 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 19 events. 3/19 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs. 0/19 useless extension candidates. Maximal degree in co-relation 32. Up to 4 conditions per place. [2020-02-10 23:00:05,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 18 transitions [2020-02-10 23:00:05,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 18 transitions [2020-02-10 23:00:05,115 INFO L479 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions [2020-02-10 23:00:05,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:05,125 INFO L129 PetriNetUnfolder]: 3/18 cut-off events. [2020-02-10 23:00:05,125 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-02-10 23:00:05,126 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:05,126 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:05,126 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:05,127 INFO L82 PathProgramCache]: Analyzing trace with hash -2047814547, now seen corresponding path program 1 times [2020-02-10 23:00:05,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:05,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717596420] [2020-02-10 23:00:05,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:05,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717596420] [2020-02-10 23:00:05,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:05,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:05,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950324656] [2020-02-10 23:00:05,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:05,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:05,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:05,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:05,161 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2020-02-10 23:00:05,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions. Second operand 3 states. [2020-02-10 23:00:05,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:05,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2020-02-10 23:00:05,162 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:05,182 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-02-10 23:00:05,182 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2020-02-10 23:00:05,182 INFO L76 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 13 events. 0/13 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs. 2/15 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2020-02-10 23:00:05,183 INFO L145 encePairwiseOnDemand]: 36/39 looper letters, 1 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2020-02-10 23:00:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:05,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2020-02-10 23:00:05,187 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.905982905982906 [2020-02-10 23:00:05,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 106 transitions. [2020-02-10 23:00:05,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 106 transitions. [2020-02-10 23:00:05,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:05,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 106 transitions. [2020-02-10 23:00:05,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:05,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:05,190 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:05,190 INFO L178 Difference]: Start difference. First operand has 30 places, 18 transitions. Second operand 3 states and 106 transitions. [2020-02-10 23:00:05,191 INFO L206 Difference]: Finished difference. Result has 32 places, 13 transitions [2020-02-10 23:00:05,192 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=13} [2020-02-10 23:00:05,192 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 32 places, 13 transitions [2020-02-10 23:00:05,202 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-02-10 23:00:05,202 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-02-10 23:00:05,206 INFO L76 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 13 events. 0/13 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs. 0/13 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2020-02-10 23:00:05,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 13 transitions [2020-02-10 23:00:05,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 13 transitions [2020-02-10 23:00:05,207 INFO L479 AbstractCegarLoop]: Abstraction has has 32 places, 13 transitions [2020-02-10 23:00:05,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:05,215 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-02-10 23:00:05,216 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-02-10 23:00:05,216 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:05,216 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:05,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:05,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:05,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1958479669, now seen corresponding path program 1 times [2020-02-10 23:00:05,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:05,218 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791583038] [2020-02-10 23:00:05,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:05,602 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 11 [2020-02-10 23:00:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:05,606 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791583038] [2020-02-10 23:00:05,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:05,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:05,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894930194] [2020-02-10 23:00:05,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:05,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:05,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:05,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:05,609 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:05,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 13 transitions. Second operand 6 states. [2020-02-10 23:00:05,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:05,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:05,610 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:05,718 INFO L129 PetriNetUnfolder]: 15/60 cut-off events. [2020-02-10 23:00:05,718 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-02-10 23:00:05,719 INFO L76 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 60 events. 15/60 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 204 event pairs. 1/55 useless extension candidates. Maximal degree in co-relation 120. Up to 17 conditions per place. [2020-02-10 23:00:05,721 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 9 selfloop transitions, 3 changer transitions 1/21 dead transitions. [2020-02-10 23:00:05,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:05,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:05,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:00:05,724 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:00:05,724 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:00:05,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:00:05,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:05,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:00:05,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:05,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:05,727 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:05,727 INFO L178 Difference]: Start difference. First operand has 32 places, 13 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:00:05,728 INFO L206 Difference]: Finished difference. Result has 41 places, 15 transitions [2020-02-10 23:00:05,728 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=41, PETRI_TRANSITIONS=15} [2020-02-10 23:00:05,729 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 41 places, 15 transitions [2020-02-10 23:00:05,734 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2020-02-10 23:00:05,735 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2020-02-10 23:00:05,735 INFO L76 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 25 events. 0/25 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs. 0/21 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-02-10 23:00:05,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 15 transitions [2020-02-10 23:00:05,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 15 transitions [2020-02-10 23:00:05,736 INFO L479 AbstractCegarLoop]: Abstraction has has 40 places, 15 transitions [2020-02-10 23:00:05,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:05,741 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-02-10 23:00:05,741 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2020-02-10 23:00:05,742 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:05,742 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:05,742 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:05,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:05,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1012289417, now seen corresponding path program 2 times [2020-02-10 23:00:05,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:05,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427482700] [2020-02-10 23:00:05,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:05,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427482700] [2020-02-10 23:00:05,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:05,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:05,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574503762] [2020-02-10 23:00:05,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:05,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:05,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:05,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:05,928 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:05,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 15 transitions. Second operand 6 states. [2020-02-10 23:00:05,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:05,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:05,929 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:06,046 INFO L129 PetriNetUnfolder]: 11/87 cut-off events. [2020-02-10 23:00:06,046 INFO L130 PetriNetUnfolder]: For 107/112 co-relation queries the response was YES. [2020-02-10 23:00:06,048 INFO L76 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 87 events. 11/87 cut-off events. For 107/112 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 424 event pairs. 1/81 useless extension candidates. Maximal degree in co-relation 233. Up to 21 conditions per place. [2020-02-10 23:00:06,054 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 10 selfloop transitions, 4 changer transitions 1/23 dead transitions. [2020-02-10 23:00:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:06,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:00:06,057 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:00:06,057 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:00:06,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:00:06,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:06,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:00:06,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:06,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:06,061 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:06,061 INFO L178 Difference]: Start difference. First operand has 40 places, 15 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:00:06,062 INFO L206 Difference]: Finished difference. Result has 49 places, 18 transitions [2020-02-10 23:00:06,062 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=49, PETRI_TRANSITIONS=18} [2020-02-10 23:00:06,062 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 18 transitions [2020-02-10 23:00:06,074 INFO L129 PetriNetUnfolder]: 0/57 cut-off events. [2020-02-10 23:00:06,074 INFO L130 PetriNetUnfolder]: For 99/101 co-relation queries the response was YES. [2020-02-10 23:00:06,075 INFO L76 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 57 events. 0/57 cut-off events. For 99/101 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 246 event pairs. 0/50 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2020-02-10 23:00:06,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 18 transitions [2020-02-10 23:00:06,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 18 transitions [2020-02-10 23:00:06,077 INFO L479 AbstractCegarLoop]: Abstraction has has 48 places, 18 transitions [2020-02-10 23:00:06,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:06,087 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2020-02-10 23:00:06,087 INFO L130 PetriNetUnfolder]: For 100/102 co-relation queries the response was YES. [2020-02-10 23:00:06,087 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:06,087 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:06,088 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:06,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:06,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1473450575, now seen corresponding path program 3 times [2020-02-10 23:00:06,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:06,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403007729] [2020-02-10 23:00:06,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:06,261 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403007729] [2020-02-10 23:00:06,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:06,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:06,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568537902] [2020-02-10 23:00:06,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:06,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:06,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:06,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:06,264 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:06,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 18 transitions. Second operand 6 states. [2020-02-10 23:00:06,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:06,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:06,266 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:06,353 INFO L129 PetriNetUnfolder]: 9/91 cut-off events. [2020-02-10 23:00:06,354 INFO L130 PetriNetUnfolder]: For 249/264 co-relation queries the response was YES. [2020-02-10 23:00:06,355 INFO L76 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 91 events. 9/91 cut-off events. For 249/264 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 471 event pairs. 1/86 useless extension candidates. Maximal degree in co-relation 298. Up to 21 conditions per place. [2020-02-10 23:00:06,357 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 11 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2020-02-10 23:00:06,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:00:06,359 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:00:06,359 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:00:06,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:00:06,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:06,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:00:06,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:06,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:06,361 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:06,362 INFO L178 Difference]: Start difference. First operand has 48 places, 18 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:00:06,362 INFO L206 Difference]: Finished difference. Result has 56 places, 19 transitions [2020-02-10 23:00:06,362 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=56, PETRI_TRANSITIONS=19} [2020-02-10 23:00:06,363 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 56 places, 19 transitions [2020-02-10 23:00:06,373 INFO L129 PetriNetUnfolder]: 0/67 cut-off events. [2020-02-10 23:00:06,373 INFO L130 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2020-02-10 23:00:06,374 INFO L76 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 67 events. 0/67 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 328 event pairs. 0/60 useless extension candidates. Maximal degree in co-relation 210. Up to 9 conditions per place. [2020-02-10 23:00:06,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 19 transitions [2020-02-10 23:00:06,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 19 transitions [2020-02-10 23:00:06,376 INFO L479 AbstractCegarLoop]: Abstraction has has 55 places, 19 transitions [2020-02-10 23:00:06,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:06,385 INFO L129 PetriNetUnfolder]: 0/59 cut-off events. [2020-02-10 23:00:06,385 INFO L130 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2020-02-10 23:00:06,385 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:06,386 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:06,386 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:06,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:06,386 INFO L82 PathProgramCache]: Analyzing trace with hash -76992545, now seen corresponding path program 4 times [2020-02-10 23:00:06,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:06,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677331335] [2020-02-10 23:00:06,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:06,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677331335] [2020-02-10 23:00:06,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:06,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:06,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737793974] [2020-02-10 23:00:06,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:06,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:06,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:06,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:06,548 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:06,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 19 transitions. Second operand 6 states. [2020-02-10 23:00:06,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:06,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:06,549 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:06,631 INFO L129 PetriNetUnfolder]: 7/105 cut-off events. [2020-02-10 23:00:06,632 INFO L130 PetriNetUnfolder]: For 422/437 co-relation queries the response was YES. [2020-02-10 23:00:06,633 INFO L76 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 105 events. 7/105 cut-off events. For 422/437 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 616 event pairs. 1/101 useless extension candidates. Maximal degree in co-relation 374. Up to 25 conditions per place. [2020-02-10 23:00:06,636 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 11 selfloop transitions, 9 changer transitions 2/30 dead transitions. [2020-02-10 23:00:06,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:00:06,638 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:00:06,638 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:00:06,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:00:06,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:06,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:00:06,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:06,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:06,641 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:06,641 INFO L178 Difference]: Start difference. First operand has 55 places, 19 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:00:06,642 INFO L206 Difference]: Finished difference. Result has 64 places, 22 transitions [2020-02-10 23:00:06,642 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=207, PETRI_PLACES=64, PETRI_TRANSITIONS=22} [2020-02-10 23:00:06,642 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 22 transitions [2020-02-10 23:00:06,658 INFO L129 PetriNetUnfolder]: 0/84 cut-off events. [2020-02-10 23:00:06,658 INFO L130 PetriNetUnfolder]: For 436/442 co-relation queries the response was YES. [2020-02-10 23:00:06,659 INFO L76 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 84 events. 0/84 cut-off events. For 436/442 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 475 event pairs. 0/75 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2020-02-10 23:00:06,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 22 transitions [2020-02-10 23:00:06,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 22 transitions [2020-02-10 23:00:06,662 INFO L479 AbstractCegarLoop]: Abstraction has has 63 places, 22 transitions [2020-02-10 23:00:06,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:06,676 INFO L129 PetriNetUnfolder]: 0/74 cut-off events. [2020-02-10 23:00:06,676 INFO L130 PetriNetUnfolder]: For 436/442 co-relation queries the response was YES. [2020-02-10 23:00:06,676 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:06,676 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:06,677 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:06,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:06,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1061434001, now seen corresponding path program 5 times [2020-02-10 23:00:06,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:06,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107751764] [2020-02-10 23:00:06,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:06,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107751764] [2020-02-10 23:00:06,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:06,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:06,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392553726] [2020-02-10 23:00:06,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:06,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:06,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:06,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:06,855 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:06,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 22 transitions. Second operand 6 states. [2020-02-10 23:00:06,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:06,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:06,856 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:06,957 INFO L129 PetriNetUnfolder]: 7/99 cut-off events. [2020-02-10 23:00:06,957 INFO L130 PetriNetUnfolder]: For 654/669 co-relation queries the response was YES. [2020-02-10 23:00:06,959 INFO L76 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 99 events. 7/99 cut-off events. For 654/669 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 548 event pairs. 1/93 useless extension candidates. Maximal degree in co-relation 416. Up to 25 conditions per place. [2020-02-10 23:00:06,961 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 14 selfloop transitions, 4 changer transitions 1/27 dead transitions. [2020-02-10 23:00:06,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:06,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:00:06,963 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:00:06,964 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:00:06,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:00:06,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:06,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:00:06,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:06,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:06,966 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:06,966 INFO L178 Difference]: Start difference. First operand has 63 places, 22 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:00:06,967 INFO L206 Difference]: Finished difference. Result has 70 places, 22 transitions [2020-02-10 23:00:06,974 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=70, PETRI_TRANSITIONS=22} [2020-02-10 23:00:06,974 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 22 transitions [2020-02-10 23:00:06,988 INFO L129 PetriNetUnfolder]: 0/79 cut-off events. [2020-02-10 23:00:06,988 INFO L130 PetriNetUnfolder]: For 552/558 co-relation queries the response was YES. [2020-02-10 23:00:06,989 INFO L76 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 79 events. 0/79 cut-off events. For 552/558 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 430 event pairs. 0/70 useless extension candidates. Maximal degree in co-relation 314. Up to 11 conditions per place. [2020-02-10 23:00:06,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 22 transitions [2020-02-10 23:00:06,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 22 transitions [2020-02-10 23:00:06,992 INFO L479 AbstractCegarLoop]: Abstraction has has 69 places, 22 transitions [2020-02-10 23:00:06,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:07,005 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2020-02-10 23:00:07,005 INFO L130 PetriNetUnfolder]: For 552/558 co-relation queries the response was YES. [2020-02-10 23:00:07,005 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:07,006 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:07,006 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:07,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:07,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1484748849, now seen corresponding path program 6 times [2020-02-10 23:00:07,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:07,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075244633] [2020-02-10 23:00:07,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:07,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075244633] [2020-02-10 23:00:07,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:07,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:07,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108325460] [2020-02-10 23:00:07,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:07,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:07,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:07,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:07,116 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:07,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 22 transitions. Second operand 6 states. [2020-02-10 23:00:07,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:07,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:07,117 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:07,204 INFO L129 PetriNetUnfolder]: 3/123 cut-off events. [2020-02-10 23:00:07,204 INFO L130 PetriNetUnfolder]: For 1015/1030 co-relation queries the response was YES. [2020-02-10 23:00:07,206 INFO L76 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 123 events. 3/123 cut-off events. For 1015/1030 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 807 event pairs. 1/118 useless extension candidates. Maximal degree in co-relation 548. Up to 30 conditions per place. [2020-02-10 23:00:07,209 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 14 selfloop transitions, 7 changer transitions 2/31 dead transitions. [2020-02-10 23:00:07,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:07,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:00:07,210 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:00:07,211 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:00:07,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:00:07,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:07,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:00:07,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:07,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:07,213 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:07,213 INFO L178 Difference]: Start difference. First operand has 69 places, 22 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:00:07,213 INFO L206 Difference]: Finished difference. Result has 78 places, 26 transitions [2020-02-10 23:00:07,214 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=78, PETRI_TRANSITIONS=26} [2020-02-10 23:00:07,214 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 78 places, 26 transitions [2020-02-10 23:00:07,235 INFO L129 PetriNetUnfolder]: 0/109 cut-off events. [2020-02-10 23:00:07,236 INFO L130 PetriNetUnfolder]: For 1112/1112 co-relation queries the response was YES. [2020-02-10 23:00:07,237 INFO L76 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 109 events. 0/109 cut-off events. For 1112/1112 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 693 event pairs. 0/102 useless extension candidates. Maximal degree in co-relation 490. Up to 15 conditions per place. [2020-02-10 23:00:07,237 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 26 transitions [2020-02-10 23:00:07,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 26 transitions [2020-02-10 23:00:07,240 INFO L479 AbstractCegarLoop]: Abstraction has has 77 places, 26 transitions [2020-02-10 23:00:07,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:07,259 INFO L129 PetriNetUnfolder]: 0/96 cut-off events. [2020-02-10 23:00:07,259 INFO L130 PetriNetUnfolder]: For 1113/1113 co-relation queries the response was YES. [2020-02-10 23:00:07,259 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:07,260 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:07,260 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:07,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:07,260 INFO L82 PathProgramCache]: Analyzing trace with hash -625874319, now seen corresponding path program 7 times [2020-02-10 23:00:07,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:07,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436818169] [2020-02-10 23:00:07,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:07,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436818169] [2020-02-10 23:00:07,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:07,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:07,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582338123] [2020-02-10 23:00:07,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:07,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:07,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:07,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:07,391 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:07,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 26 transitions. Second operand 6 states. [2020-02-10 23:00:07,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:07,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:07,391 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:07,489 INFO L129 PetriNetUnfolder]: 3/116 cut-off events. [2020-02-10 23:00:07,490 INFO L130 PetriNetUnfolder]: For 1303/1323 co-relation queries the response was YES. [2020-02-10 23:00:07,491 INFO L76 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 116 events. 3/116 cut-off events. For 1303/1323 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 739 event pairs. 1/110 useless extension candidates. Maximal degree in co-relation 569. Up to 30 conditions per place. [2020-02-10 23:00:07,496 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 14 selfloop transitions, 6 changer transitions 1/29 dead transitions. [2020-02-10 23:00:07,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:07,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:07,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:00:07,498 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:00:07,498 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:00:07,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:00:07,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:07,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:00:07,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:07,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:07,501 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:07,501 INFO L178 Difference]: Start difference. First operand has 77 places, 26 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:00:07,501 INFO L206 Difference]: Finished difference. Result has 84 places, 26 transitions [2020-02-10 23:00:07,502 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=84, PETRI_TRANSITIONS=26} [2020-02-10 23:00:07,502 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 84 places, 26 transitions [2020-02-10 23:00:07,525 INFO L129 PetriNetUnfolder]: 0/103 cut-off events. [2020-02-10 23:00:07,526 INFO L130 PetriNetUnfolder]: For 1289/1289 co-relation queries the response was YES. [2020-02-10 23:00:07,527 INFO L76 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 103 events. 0/103 cut-off events. For 1289/1289 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 666 event pairs. 0/95 useless extension candidates. Maximal degree in co-relation 502. Up to 14 conditions per place. [2020-02-10 23:00:07,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 26 transitions [2020-02-10 23:00:07,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 26 transitions [2020-02-10 23:00:07,531 INFO L479 AbstractCegarLoop]: Abstraction has has 83 places, 26 transitions [2020-02-10 23:00:07,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:07,561 INFO L129 PetriNetUnfolder]: 0/91 cut-off events. [2020-02-10 23:00:07,562 INFO L130 PetriNetUnfolder]: For 1289/1289 co-relation queries the response was YES. [2020-02-10 23:00:07,562 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:07,562 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:07,562 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:07,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:07,563 INFO L82 PathProgramCache]: Analyzing trace with hash 145943343, now seen corresponding path program 8 times [2020-02-10 23:00:07,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:07,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622229741] [2020-02-10 23:00:07,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:07,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622229741] [2020-02-10 23:00:07,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:07,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:07,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532150659] [2020-02-10 23:00:07,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:07,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:07,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:07,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:07,724 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:07,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 26 transitions. Second operand 6 states. [2020-02-10 23:00:07,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:07,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:07,725 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:07,815 INFO L129 PetriNetUnfolder]: 3/109 cut-off events. [2020-02-10 23:00:07,815 INFO L130 PetriNetUnfolder]: For 1501/1521 co-relation queries the response was YES. [2020-02-10 23:00:07,816 INFO L76 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 109 events. 3/109 cut-off events. For 1501/1521 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 673 event pairs. 1/104 useless extension candidates. Maximal degree in co-relation 576. Up to 26 conditions per place. [2020-02-10 23:00:07,820 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 15 selfloop transitions, 7 changer transitions 1/31 dead transitions. [2020-02-10 23:00:07,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:07,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:07,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:00:07,822 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:00:07,822 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:00:07,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:00:07,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:07,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:00:07,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:07,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:07,824 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:07,824 INFO L178 Difference]: Start difference. First operand has 83 places, 26 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:00:07,825 INFO L206 Difference]: Finished difference. Result has 90 places, 26 transitions [2020-02-10 23:00:07,826 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=349, PETRI_PLACES=90, PETRI_TRANSITIONS=26} [2020-02-10 23:00:07,826 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 90 places, 26 transitions [2020-02-10 23:00:07,853 INFO L129 PetriNetUnfolder]: 0/97 cut-off events. [2020-02-10 23:00:07,854 INFO L130 PetriNetUnfolder]: For 1501/1501 co-relation queries the response was YES. [2020-02-10 23:00:07,855 INFO L76 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 97 events. 0/97 cut-off events. For 1501/1501 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 591 event pairs. 0/89 useless extension candidates. Maximal degree in co-relation 517. Up to 13 conditions per place. [2020-02-10 23:00:07,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 26 transitions [2020-02-10 23:00:07,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 26 transitions [2020-02-10 23:00:07,859 INFO L479 AbstractCegarLoop]: Abstraction has has 88 places, 26 transitions [2020-02-10 23:00:07,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:07,878 INFO L129 PetriNetUnfolder]: 0/86 cut-off events. [2020-02-10 23:00:07,878 INFO L130 PetriNetUnfolder]: For 1501/1501 co-relation queries the response was YES. [2020-02-10 23:00:07,879 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:07,879 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:07,879 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:07,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:07,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1139543661, now seen corresponding path program 9 times [2020-02-10 23:00:07,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:07,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252081615] [2020-02-10 23:00:07,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:07,992 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252081615] [2020-02-10 23:00:07,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:07,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:07,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349657777] [2020-02-10 23:00:07,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:07,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:07,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:07,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:07,994 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:07,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 26 transitions. Second operand 6 states. [2020-02-10 23:00:07,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:07,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:07,995 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:08,081 INFO L129 PetriNetUnfolder]: 3/103 cut-off events. [2020-02-10 23:00:08,082 INFO L130 PetriNetUnfolder]: For 1736/1748 co-relation queries the response was YES. [2020-02-10 23:00:08,083 INFO L76 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 103 events. 3/103 cut-off events. For 1736/1748 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 624 event pairs. 1/100 useless extension candidates. Maximal degree in co-relation 590. Up to 22 conditions per place. [2020-02-10 23:00:08,086 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 14 selfloop transitions, 11 changer transitions 3/36 dead transitions. [2020-02-10 23:00:08,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:08,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:08,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:00:08,088 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:00:08,088 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:00:08,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:00:08,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:08,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:00:08,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:08,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:08,091 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:08,091 INFO L178 Difference]: Start difference. First operand has 88 places, 26 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:00:08,092 INFO L206 Difference]: Finished difference. Result has 96 places, 28 transitions [2020-02-10 23:00:08,092 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=429, PETRI_PLACES=96, PETRI_TRANSITIONS=28} [2020-02-10 23:00:08,093 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 96 places, 28 transitions [2020-02-10 23:00:08,117 INFO L129 PetriNetUnfolder]: 0/90 cut-off events. [2020-02-10 23:00:08,117 INFO L130 PetriNetUnfolder]: For 1607/1609 co-relation queries the response was YES. [2020-02-10 23:00:08,119 INFO L76 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 90 events. 0/90 cut-off events. For 1607/1609 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 534 event pairs. 0/83 useless extension candidates. Maximal degree in co-relation 526. Up to 12 conditions per place. [2020-02-10 23:00:08,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 28 transitions [2020-02-10 23:00:08,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 28 transitions [2020-02-10 23:00:08,122 INFO L479 AbstractCegarLoop]: Abstraction has has 92 places, 28 transitions [2020-02-10 23:00:08,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:08,144 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2020-02-10 23:00:08,144 INFO L130 PetriNetUnfolder]: For 1604/1606 co-relation queries the response was YES. [2020-02-10 23:00:08,144 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:08,145 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:08,145 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:08,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:08,145 INFO L82 PathProgramCache]: Analyzing trace with hash -736478475, now seen corresponding path program 10 times [2020-02-10 23:00:08,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:08,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610681997] [2020-02-10 23:00:08,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:08,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610681997] [2020-02-10 23:00:08,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:08,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:08,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469470679] [2020-02-10 23:00:08,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:08,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:08,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:08,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:08,265 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:08,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 28 transitions. Second operand 6 states. [2020-02-10 23:00:08,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:08,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:08,265 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:08,353 INFO L129 PetriNetUnfolder]: 3/96 cut-off events. [2020-02-10 23:00:08,353 INFO L130 PetriNetUnfolder]: For 1975/1999 co-relation queries the response was YES. [2020-02-10 23:00:08,355 INFO L76 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 96 events. 3/96 cut-off events. For 1975/1999 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 555 event pairs. 3/96 useless extension candidates. Maximal degree in co-relation 588. Up to 24 conditions per place. [2020-02-10 23:00:08,358 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 10 changer transitions 2/36 dead transitions. [2020-02-10 23:00:08,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:00:08,360 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:00:08,360 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:00:08,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:00:08,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:08,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:00:08,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:08,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:08,363 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:08,363 INFO L178 Difference]: Start difference. First operand has 92 places, 28 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:00:08,364 INFO L206 Difference]: Finished difference. Result has 100 places, 30 transitions [2020-02-10 23:00:08,364 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=507, PETRI_PLACES=100, PETRI_TRANSITIONS=30} [2020-02-10 23:00:08,365 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 100 places, 30 transitions [2020-02-10 23:00:08,392 INFO L129 PetriNetUnfolder]: 0/81 cut-off events. [2020-02-10 23:00:08,392 INFO L130 PetriNetUnfolder]: For 1862/1866 co-relation queries the response was YES. [2020-02-10 23:00:08,394 INFO L76 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 81 events. 0/81 cut-off events. For 1862/1866 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 446 event pairs. 0/75 useless extension candidates. Maximal degree in co-relation 515. Up to 11 conditions per place. [2020-02-10 23:00:08,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 30 transitions [2020-02-10 23:00:08,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 30 transitions [2020-02-10 23:00:08,398 INFO L479 AbstractCegarLoop]: Abstraction has has 99 places, 30 transitions [2020-02-10 23:00:08,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:08,422 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2020-02-10 23:00:08,423 INFO L130 PetriNetUnfolder]: For 1842/1844 co-relation queries the response was YES. [2020-02-10 23:00:08,423 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:08,423 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:08,423 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:08,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:08,424 INFO L82 PathProgramCache]: Analyzing trace with hash -289616339, now seen corresponding path program 11 times [2020-02-10 23:00:08,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:08,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994196061] [2020-02-10 23:00:08,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:08,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994196061] [2020-02-10 23:00:08,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:08,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:08,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947421697] [2020-02-10 23:00:08,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:08,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:08,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:08,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:08,558 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:08,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 30 transitions. Second operand 6 states. [2020-02-10 23:00:08,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:08,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:08,559 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:08,675 INFO L129 PetriNetUnfolder]: 1/106 cut-off events. [2020-02-10 23:00:08,675 INFO L130 PetriNetUnfolder]: For 2936/2993 co-relation queries the response was YES. [2020-02-10 23:00:08,677 INFO L76 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 106 events. 1/106 cut-off events. For 2936/2993 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 677 event pairs. 6/108 useless extension candidates. Maximal degree in co-relation 704. Up to 28 conditions per place. [2020-02-10 23:00:08,681 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 14 changer transitions 1/39 dead transitions. [2020-02-10 23:00:08,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:00:08,683 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:00:08,683 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:00:08,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:00:08,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:08,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:00:08,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:08,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:08,685 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:08,685 INFO L178 Difference]: Start difference. First operand has 99 places, 30 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:00:08,686 INFO L206 Difference]: Finished difference. Result has 108 places, 35 transitions [2020-02-10 23:00:08,686 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=108, PETRI_TRANSITIONS=35} [2020-02-10 23:00:08,687 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 108 places, 35 transitions [2020-02-10 23:00:08,715 INFO L129 PetriNetUnfolder]: 0/101 cut-off events. [2020-02-10 23:00:08,715 INFO L130 PetriNetUnfolder]: For 2795/2797 co-relation queries the response was YES. [2020-02-10 23:00:08,717 INFO L76 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 101 events. 0/101 cut-off events. For 2795/2797 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 643 event pairs. 0/95 useless extension candidates. Maximal degree in co-relation 674. Up to 14 conditions per place. [2020-02-10 23:00:08,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 35 transitions [2020-02-10 23:00:08,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 35 transitions [2020-02-10 23:00:08,721 INFO L479 AbstractCegarLoop]: Abstraction has has 108 places, 35 transitions [2020-02-10 23:00:08,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:08,746 INFO L129 PetriNetUnfolder]: 0/90 cut-off events. [2020-02-10 23:00:08,746 INFO L130 PetriNetUnfolder]: For 2795/2797 co-relation queries the response was YES. [2020-02-10 23:00:08,746 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:08,746 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:08,747 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:08,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:08,747 INFO L82 PathProgramCache]: Analyzing trace with hash 118828179, now seen corresponding path program 12 times [2020-02-10 23:00:08,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:08,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275068991] [2020-02-10 23:00:08,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:08,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275068991] [2020-02-10 23:00:08,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:08,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:08,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582252379] [2020-02-10 23:00:08,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:08,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:08,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:08,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:08,853 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:08,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 35 transitions. Second operand 6 states. [2020-02-10 23:00:08,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:08,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:08,853 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:08,954 INFO L129 PetriNetUnfolder]: 1/102 cut-off events. [2020-02-10 23:00:08,954 INFO L130 PetriNetUnfolder]: For 3398/3478 co-relation queries the response was YES. [2020-02-10 23:00:08,956 INFO L76 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 102 events. 1/102 cut-off events. For 3398/3478 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 633 event pairs. 6/103 useless extension candidates. Maximal degree in co-relation 728. Up to 24 conditions per place. [2020-02-10 23:00:08,959 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 17 selfloop transitions, 13 changer transitions 1/39 dead transitions. [2020-02-10 23:00:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:00:08,961 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:00:08,961 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:00:08,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:00:08,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:08,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:00:08,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:08,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:08,964 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:08,964 INFO L178 Difference]: Start difference. First operand has 108 places, 35 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:00:08,965 INFO L206 Difference]: Finished difference. Result has 114 places, 34 transitions [2020-02-10 23:00:08,965 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=687, PETRI_PLACES=114, PETRI_TRANSITIONS=34} [2020-02-10 23:00:08,965 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 114 places, 34 transitions [2020-02-10 23:00:08,996 INFO L129 PetriNetUnfolder]: 0/95 cut-off events. [2020-02-10 23:00:08,996 INFO L130 PetriNetUnfolder]: For 2981/2983 co-relation queries the response was YES. [2020-02-10 23:00:08,998 INFO L76 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 95 events. 0/95 cut-off events. For 2981/2983 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 593 event pairs. 0/89 useless extension candidates. Maximal degree in co-relation 673. Up to 14 conditions per place. [2020-02-10 23:00:08,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 34 transitions [2020-02-10 23:00:09,002 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 34 transitions [2020-02-10 23:00:09,002 INFO L479 AbstractCegarLoop]: Abstraction has has 112 places, 34 transitions [2020-02-10 23:00:09,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:09,029 INFO L129 PetriNetUnfolder]: 0/85 cut-off events. [2020-02-10 23:00:09,030 INFO L130 PetriNetUnfolder]: For 2981/2983 co-relation queries the response was YES. [2020-02-10 23:00:09,030 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:09,030 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:09,030 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:09,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:09,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1284569227, now seen corresponding path program 13 times [2020-02-10 23:00:09,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:09,031 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741835278] [2020-02-10 23:00:09,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:09,155 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741835278] [2020-02-10 23:00:09,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:09,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:09,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591247634] [2020-02-10 23:00:09,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:09,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:09,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:09,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:09,158 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:09,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 34 transitions. Second operand 6 states. [2020-02-10 23:00:09,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:09,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:09,158 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:09,248 INFO L129 PetriNetUnfolder]: 1/97 cut-off events. [2020-02-10 23:00:09,248 INFO L130 PetriNetUnfolder]: For 3597/3650 co-relation queries the response was YES. [2020-02-10 23:00:09,250 INFO L76 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 97 events. 1/97 cut-off events. For 3597/3650 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 593 event pairs. 6/97 useless extension candidates. Maximal degree in co-relation 727. Up to 23 conditions per place. [2020-02-10 23:00:09,253 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 15 selfloop transitions, 12 changer transitions 1/36 dead transitions. [2020-02-10 23:00:09,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:09,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:09,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:00:09,255 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:00:09,255 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:00:09,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:00:09,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:09,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:00:09,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:09,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:09,257 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:09,257 INFO L178 Difference]: Start difference. First operand has 112 places, 34 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:00:09,258 INFO L206 Difference]: Finished difference. Result has 118 places, 33 transitions [2020-02-10 23:00:09,258 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=689, PETRI_PLACES=118, PETRI_TRANSITIONS=33} [2020-02-10 23:00:09,259 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 118 places, 33 transitions [2020-02-10 23:00:09,282 INFO L129 PetriNetUnfolder]: 0/89 cut-off events. [2020-02-10 23:00:09,283 INFO L130 PetriNetUnfolder]: For 3163/3165 co-relation queries the response was YES. [2020-02-10 23:00:09,284 INFO L76 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 89 events. 0/89 cut-off events. For 3163/3165 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 545 event pairs. 0/83 useless extension candidates. Maximal degree in co-relation 671. Up to 14 conditions per place. [2020-02-10 23:00:09,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 33 transitions [2020-02-10 23:00:09,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 33 transitions [2020-02-10 23:00:09,287 INFO L479 AbstractCegarLoop]: Abstraction has has 116 places, 33 transitions [2020-02-10 23:00:09,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:09,308 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2020-02-10 23:00:09,308 INFO L130 PetriNetUnfolder]: For 3163/3165 co-relation queries the response was YES. [2020-02-10 23:00:09,309 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:09,309 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:09,309 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:09,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:09,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1864287049, now seen corresponding path program 14 times [2020-02-10 23:00:09,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:09,310 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567802917] [2020-02-10 23:00:09,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:09,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567802917] [2020-02-10 23:00:09,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:09,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:09,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585212668] [2020-02-10 23:00:09,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:09,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:09,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:09,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:09,425 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:09,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 33 transitions. Second operand 6 states. [2020-02-10 23:00:09,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:09,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:09,426 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:09,548 INFO L129 PetriNetUnfolder]: 1/91 cut-off events. [2020-02-10 23:00:09,548 INFO L130 PetriNetUnfolder]: For 3651/3692 co-relation queries the response was YES. [2020-02-10 23:00:09,550 INFO L76 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 91 events. 1/91 cut-off events. For 3651/3692 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 557 event pairs. 4/89 useless extension candidates. Maximal degree in co-relation 722. Up to 21 conditions per place. [2020-02-10 23:00:09,554 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 11 changer transitions 2/34 dead transitions. [2020-02-10 23:00:09,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:09,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2020-02-10 23:00:09,556 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2020-02-10 23:00:09,556 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2020-02-10 23:00:09,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2020-02-10 23:00:09,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:09,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2020-02-10 23:00:09,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:09,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:09,558 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:09,558 INFO L178 Difference]: Start difference. First operand has 116 places, 33 transitions. Second operand 6 states and 187 transitions. [2020-02-10 23:00:09,559 INFO L206 Difference]: Finished difference. Result has 122 places, 31 transitions [2020-02-10 23:00:09,559 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=659, PETRI_PLACES=122, PETRI_TRANSITIONS=31} [2020-02-10 23:00:09,560 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 122 places, 31 transitions [2020-02-10 23:00:09,584 INFO L129 PetriNetUnfolder]: 0/82 cut-off events. [2020-02-10 23:00:09,584 INFO L130 PetriNetUnfolder]: For 3235/3237 co-relation queries the response was YES. [2020-02-10 23:00:09,585 INFO L76 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 82 events. 0/82 cut-off events. For 3235/3237 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 479 event pairs. 0/76 useless extension candidates. Maximal degree in co-relation 651. Up to 14 conditions per place. [2020-02-10 23:00:09,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 31 transitions [2020-02-10 23:00:09,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 31 transitions [2020-02-10 23:00:09,589 INFO L479 AbstractCegarLoop]: Abstraction has has 117 places, 31 transitions [2020-02-10 23:00:09,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:09,610 INFO L129 PetriNetUnfolder]: 0/74 cut-off events. [2020-02-10 23:00:09,610 INFO L130 PetriNetUnfolder]: For 3298/3307 co-relation queries the response was YES. [2020-02-10 23:00:09,610 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:09,610 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:09,611 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:09,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:09,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1804782191, now seen corresponding path program 15 times [2020-02-10 23:00:09,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:09,611 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440115792] [2020-02-10 23:00:09,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:09,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440115792] [2020-02-10 23:00:09,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:09,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:09,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176645435] [2020-02-10 23:00:09,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:09,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:09,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:09,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:09,732 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:09,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 31 transitions. Second operand 6 states. [2020-02-10 23:00:09,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:09,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:09,733 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:09,848 INFO L129 PetriNetUnfolder]: 1/84 cut-off events. [2020-02-10 23:00:09,849 INFO L130 PetriNetUnfolder]: For 3730/3771 co-relation queries the response was YES. [2020-02-10 23:00:09,851 INFO L76 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 84 events. 1/84 cut-off events. For 3730/3771 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 492 event pairs. 2/84 useless extension candidates. Maximal degree in co-relation 698. Up to 16 conditions per place. [2020-02-10 23:00:09,856 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 15 changer transitions 11/47 dead transitions. [2020-02-10 23:00:09,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:09,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2020-02-10 23:00:09,859 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2020-02-10 23:00:09,859 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2020-02-10 23:00:09,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2020-02-10 23:00:09,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:09,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2020-02-10 23:00:09,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:09,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:09,861 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:09,862 INFO L178 Difference]: Start difference. First operand has 117 places, 31 transitions. Second operand 6 states and 187 transitions. [2020-02-10 23:00:09,862 INFO L206 Difference]: Finished difference. Result has 123 places, 31 transitions [2020-02-10 23:00:09,863 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=692, PETRI_PLACES=123, PETRI_TRANSITIONS=31} [2020-02-10 23:00:09,863 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 123 places, 31 transitions [2020-02-10 23:00:09,884 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2020-02-10 23:00:09,885 INFO L130 PetriNetUnfolder]: For 2619/2630 co-relation queries the response was YES. [2020-02-10 23:00:09,886 INFO L76 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 70 events. 0/70 cut-off events. For 2619/2630 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 365 event pairs. 1/67 useless extension candidates. Maximal degree in co-relation 510. Up to 11 conditions per place. [2020-02-10 23:00:09,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 31 transitions [2020-02-10 23:00:09,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 31 transitions [2020-02-10 23:00:09,889 INFO L479 AbstractCegarLoop]: Abstraction has has 123 places, 31 transitions [2020-02-10 23:00:09,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:09,905 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2020-02-10 23:00:09,905 INFO L130 PetriNetUnfolder]: For 2619/2630 co-relation queries the response was YES. [2020-02-10 23:00:09,906 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:09,906 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:09,906 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:09,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1749449427, now seen corresponding path program 16 times [2020-02-10 23:00:09,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:09,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531767322] [2020-02-10 23:00:09,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:10,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531767322] [2020-02-10 23:00:10,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:10,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:10,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408504393] [2020-02-10 23:00:10,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:10,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:10,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:10,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:10,025 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:10,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 31 transitions. Second operand 6 states. [2020-02-10 23:00:10,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:10,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:10,026 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:10,133 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2020-02-10 23:00:10,133 INFO L130 PetriNetUnfolder]: For 2942/2988 co-relation queries the response was YES. [2020-02-10 23:00:10,136 INFO L76 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 72 events. 1/72 cut-off events. For 2942/2988 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 383 event pairs. 5/76 useless extension candidates. Maximal degree in co-relation 545. Up to 16 conditions per place. [2020-02-10 23:00:10,139 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 18 selfloop transitions, 12 changer transitions 0/38 dead transitions. [2020-02-10 23:00:10,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2020-02-10 23:00:10,141 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2020-02-10 23:00:10,141 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2020-02-10 23:00:10,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2020-02-10 23:00:10,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:10,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2020-02-10 23:00:10,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:10,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:10,144 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:10,144 INFO L178 Difference]: Start difference. First operand has 123 places, 31 transitions. Second operand 6 states and 187 transitions. [2020-02-10 23:00:10,145 INFO L206 Difference]: Finished difference. Result has 130 places, 33 transitions [2020-02-10 23:00:10,146 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=771, PETRI_PLACES=130, PETRI_TRANSITIONS=33} [2020-02-10 23:00:10,146 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 130 places, 33 transitions [2020-02-10 23:00:10,173 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2020-02-10 23:00:10,173 INFO L130 PetriNetUnfolder]: For 2857/2868 co-relation queries the response was YES. [2020-02-10 23:00:10,175 INFO L76 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 69 events. 0/69 cut-off events. For 2857/2868 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 359 event pairs. 0/68 useless extension candidates. Maximal degree in co-relation 520. Up to 11 conditions per place. [2020-02-10 23:00:10,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 33 transitions [2020-02-10 23:00:10,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 33 transitions [2020-02-10 23:00:10,179 INFO L479 AbstractCegarLoop]: Abstraction has has 130 places, 33 transitions [2020-02-10 23:00:10,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:10,203 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2020-02-10 23:00:10,203 INFO L130 PetriNetUnfolder]: For 2857/2868 co-relation queries the response was YES. [2020-02-10 23:00:10,204 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:10,204 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:10,204 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:10,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:10,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1173747979, now seen corresponding path program 17 times [2020-02-10 23:00:10,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:10,205 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285898401] [2020-02-10 23:00:10,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:10,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285898401] [2020-02-10 23:00:10,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:10,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:10,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132530867] [2020-02-10 23:00:10,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:10,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:10,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:10,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:10,306 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:10,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 33 transitions. Second operand 6 states. [2020-02-10 23:00:10,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:10,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:10,308 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:10,400 INFO L129 PetriNetUnfolder]: 1/71 cut-off events. [2020-02-10 23:00:10,401 INFO L130 PetriNetUnfolder]: For 3079/3114 co-relation queries the response was YES. [2020-02-10 23:00:10,402 INFO L76 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 71 events. 1/71 cut-off events. For 3079/3114 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 379 event pairs. 5/75 useless extension candidates. Maximal degree in co-relation 554. Up to 15 conditions per place. [2020-02-10 23:00:10,405 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 11 selfloop transitions, 16 changer transitions 0/35 dead transitions. [2020-02-10 23:00:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2020-02-10 23:00:10,407 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7905982905982906 [2020-02-10 23:00:10,407 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 185 transitions. [2020-02-10 23:00:10,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 185 transitions. [2020-02-10 23:00:10,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:10,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 185 transitions. [2020-02-10 23:00:10,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:10,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:10,409 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:10,410 INFO L178 Difference]: Start difference. First operand has 130 places, 33 transitions. Second operand 6 states and 185 transitions. [2020-02-10 23:00:10,410 INFO L206 Difference]: Finished difference. Result has 136 places, 33 transitions [2020-02-10 23:00:10,411 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=806, PETRI_PLACES=136, PETRI_TRANSITIONS=33} [2020-02-10 23:00:10,411 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 136 places, 33 transitions [2020-02-10 23:00:10,433 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2020-02-10 23:00:10,433 INFO L130 PetriNetUnfolder]: For 2965/2976 co-relation queries the response was YES. [2020-02-10 23:00:10,435 INFO L76 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 68 events. 0/68 cut-off events. For 2965/2976 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 363 event pairs. 0/66 useless extension candidates. Maximal degree in co-relation 525. Up to 11 conditions per place. [2020-02-10 23:00:10,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 33 transitions [2020-02-10 23:00:10,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 33 transitions [2020-02-10 23:00:10,438 INFO L479 AbstractCegarLoop]: Abstraction has has 136 places, 33 transitions [2020-02-10 23:00:10,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:10,458 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2020-02-10 23:00:10,458 INFO L130 PetriNetUnfolder]: For 2965/2976 co-relation queries the response was YES. [2020-02-10 23:00:10,458 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:10,458 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:10,459 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:10,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:10,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1412412451, now seen corresponding path program 18 times [2020-02-10 23:00:10,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:10,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541554957] [2020-02-10 23:00:10,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:10,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541554957] [2020-02-10 23:00:10,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:10,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:10,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469470924] [2020-02-10 23:00:10,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:10,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:10,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:10,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:10,577 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:10,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 33 transitions. Second operand 6 states. [2020-02-10 23:00:10,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:10,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:10,578 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:10,673 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2020-02-10 23:00:10,673 INFO L130 PetriNetUnfolder]: For 3186/3225 co-relation queries the response was YES. [2020-02-10 23:00:10,675 INFO L76 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 69 events. 1/69 cut-off events. For 3186/3225 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 358 event pairs. 3/71 useless extension candidates. Maximal degree in co-relation 556. Up to 16 conditions per place. [2020-02-10 23:00:10,679 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 11 changer transitions 1/36 dead transitions. [2020-02-10 23:00:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:10,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2020-02-10 23:00:10,681 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2020-02-10 23:00:10,681 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2020-02-10 23:00:10,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2020-02-10 23:00:10,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:10,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2020-02-10 23:00:10,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:10,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:10,685 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:10,685 INFO L178 Difference]: Start difference. First operand has 136 places, 33 transitions. Second operand 6 states and 187 transitions. [2020-02-10 23:00:10,687 INFO L206 Difference]: Finished difference. Result has 143 places, 33 transitions [2020-02-10 23:00:10,687 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=815, PETRI_PLACES=143, PETRI_TRANSITIONS=33} [2020-02-10 23:00:10,687 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 143 places, 33 transitions [2020-02-10 23:00:10,720 INFO L129 PetriNetUnfolder]: 0/65 cut-off events. [2020-02-10 23:00:10,720 INFO L130 PetriNetUnfolder]: For 2941/2952 co-relation queries the response was YES. [2020-02-10 23:00:10,722 INFO L76 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 65 events. 0/65 cut-off events. For 2941/2952 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 345 event pairs. 0/63 useless extension candidates. Maximal degree in co-relation 504. Up to 11 conditions per place. [2020-02-10 23:00:10,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 33 transitions [2020-02-10 23:00:10,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 33 transitions [2020-02-10 23:00:10,724 INFO L479 AbstractCegarLoop]: Abstraction has has 142 places, 33 transitions [2020-02-10 23:00:10,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:10,747 INFO L129 PetriNetUnfolder]: 0/61 cut-off events. [2020-02-10 23:00:10,747 INFO L130 PetriNetUnfolder]: For 2941/2952 co-relation queries the response was YES. [2020-02-10 23:00:10,748 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:10,748 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:10,748 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:10,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:10,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1173225985, now seen corresponding path program 19 times [2020-02-10 23:00:10,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:10,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329523160] [2020-02-10 23:00:10,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:10,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329523160] [2020-02-10 23:00:10,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:10,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:10,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096269777] [2020-02-10 23:00:10,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:10,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:10,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:10,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:10,921 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:10,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 33 transitions. Second operand 6 states. [2020-02-10 23:00:10,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:10,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:10,922 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:11,021 INFO L129 PetriNetUnfolder]: 0/78 cut-off events. [2020-02-10 23:00:11,021 INFO L130 PetriNetUnfolder]: For 4140/4212 co-relation queries the response was YES. [2020-02-10 23:00:11,023 INFO L76 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 78 events. 0/78 cut-off events. For 4140/4212 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 450 event pairs. 9/85 useless extension candidates. Maximal degree in co-relation 654. Up to 16 conditions per place. [2020-02-10 23:00:11,027 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 19 selfloop transitions, 14 changer transitions 0/41 dead transitions. [2020-02-10 23:00:11,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:11,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:11,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2020-02-10 23:00:11,028 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2020-02-10 23:00:11,029 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2020-02-10 23:00:11,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2020-02-10 23:00:11,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:11,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2020-02-10 23:00:11,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:11,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:11,030 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:11,030 INFO L178 Difference]: Start difference. First operand has 142 places, 33 transitions. Second operand 6 states and 187 transitions. [2020-02-10 23:00:11,032 INFO L206 Difference]: Finished difference. Result has 151 places, 38 transitions [2020-02-10 23:00:11,032 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1033, PETRI_PLACES=151, PETRI_TRANSITIONS=38} [2020-02-10 23:00:11,032 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 151 places, 38 transitions [2020-02-10 23:00:11,061 INFO L129 PetriNetUnfolder]: 0/78 cut-off events. [2020-02-10 23:00:11,061 INFO L130 PetriNetUnfolder]: For 4001/4010 co-relation queries the response was YES. [2020-02-10 23:00:11,063 INFO L76 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 78 events. 0/78 cut-off events. For 4001/4010 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 438 event pairs. 1/76 useless extension candidates. Maximal degree in co-relation 654. Up to 13 conditions per place. [2020-02-10 23:00:11,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 38 transitions [2020-02-10 23:00:11,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 38 transitions [2020-02-10 23:00:11,066 INFO L479 AbstractCegarLoop]: Abstraction has has 151 places, 38 transitions [2020-02-10 23:00:11,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:11,089 INFO L129 PetriNetUnfolder]: 0/73 cut-off events. [2020-02-10 23:00:11,090 INFO L130 PetriNetUnfolder]: For 4092/4120 co-relation queries the response was YES. [2020-02-10 23:00:11,090 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:11,090 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:11,090 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:11,091 INFO L82 PathProgramCache]: Analyzing trace with hash 557105797, now seen corresponding path program 20 times [2020-02-10 23:00:11,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:11,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419391298] [2020-02-10 23:00:11,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:11,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419391298] [2020-02-10 23:00:11,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:11,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:11,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010274189] [2020-02-10 23:00:11,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:11,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:11,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:11,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:11,227 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:11,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 38 transitions. Second operand 6 states. [2020-02-10 23:00:11,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:11,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:11,228 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:11,322 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2020-02-10 23:00:11,323 INFO L130 PetriNetUnfolder]: For 4242/4281 co-relation queries the response was YES. [2020-02-10 23:00:11,325 INFO L76 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 77 events. 0/77 cut-off events. For 4242/4281 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 437 event pairs. 3/79 useless extension candidates. Maximal degree in co-relation 670. Up to 20 conditions per place. [2020-02-10 23:00:11,328 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 19 selfloop transitions, 14 changer transitions 0/41 dead transitions. [2020-02-10 23:00:11,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2020-02-10 23:00:11,332 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2020-02-10 23:00:11,332 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2020-02-10 23:00:11,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2020-02-10 23:00:11,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:11,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2020-02-10 23:00:11,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:11,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:11,338 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:11,338 INFO L178 Difference]: Start difference. First operand has 151 places, 38 transitions. Second operand 6 states and 187 transitions. [2020-02-10 23:00:11,340 INFO L206 Difference]: Finished difference. Result has 158 places, 39 transitions [2020-02-10 23:00:11,340 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1097, PETRI_PLACES=158, PETRI_TRANSITIONS=39} [2020-02-10 23:00:11,340 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 158 places, 39 transitions [2020-02-10 23:00:11,372 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2020-02-10 23:00:11,373 INFO L130 PetriNetUnfolder]: For 4394/4424 co-relation queries the response was YES. [2020-02-10 23:00:11,376 INFO L76 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 77 events. 0/77 cut-off events. For 4394/4424 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 435 event pairs. 0/72 useless extension candidates. Maximal degree in co-relation 657. Up to 13 conditions per place. [2020-02-10 23:00:11,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 39 transitions [2020-02-10 23:00:11,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 39 transitions [2020-02-10 23:00:11,379 INFO L479 AbstractCegarLoop]: Abstraction has has 158 places, 39 transitions [2020-02-10 23:00:11,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:11,411 INFO L129 PetriNetUnfolder]: 0/73 cut-off events. [2020-02-10 23:00:11,411 INFO L130 PetriNetUnfolder]: For 4435/4470 co-relation queries the response was YES. [2020-02-10 23:00:11,411 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:11,412 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:11,412 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:11,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:11,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1444810327, now seen corresponding path program 21 times [2020-02-10 23:00:11,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:11,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365607352] [2020-02-10 23:00:11,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:11,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365607352] [2020-02-10 23:00:11,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:11,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:11,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975479175] [2020-02-10 23:00:11,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:11,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:11,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:11,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:11,533 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:11,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 39 transitions. Second operand 6 states. [2020-02-10 23:00:11,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:11,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:11,537 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:11,655 INFO L129 PetriNetUnfolder]: 0/76 cut-off events. [2020-02-10 23:00:11,655 INFO L130 PetriNetUnfolder]: For 4683/4756 co-relation queries the response was YES. [2020-02-10 23:00:11,658 INFO L76 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 76 events. 0/76 cut-off events. For 4683/4756 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 430 event pairs. 7/81 useless extension candidates. Maximal degree in co-relation 671. Up to 20 conditions per place. [2020-02-10 23:00:11,660 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 18 selfloop transitions, 11 changer transitions 3/40 dead transitions. [2020-02-10 23:00:11,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2020-02-10 23:00:11,662 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2020-02-10 23:00:11,662 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 186 transitions. [2020-02-10 23:00:11,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 186 transitions. [2020-02-10 23:00:11,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:11,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 186 transitions. [2020-02-10 23:00:11,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:11,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:11,664 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:11,664 INFO L178 Difference]: Start difference. First operand has 158 places, 39 transitions. Second operand 6 states and 186 transitions. [2020-02-10 23:00:11,665 INFO L206 Difference]: Finished difference. Result has 165 places, 37 transitions [2020-02-10 23:00:11,665 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1034, PETRI_PLACES=165, PETRI_TRANSITIONS=37} [2020-02-10 23:00:11,665 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 165 places, 37 transitions [2020-02-10 23:00:11,690 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2020-02-10 23:00:11,690 INFO L130 PetriNetUnfolder]: For 4162/4198 co-relation queries the response was YES. [2020-02-10 23:00:11,692 INFO L76 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 70 events. 0/70 cut-off events. For 4162/4198 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 367 event pairs. 0/68 useless extension candidates. Maximal degree in co-relation 589. Up to 12 conditions per place. [2020-02-10 23:00:11,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 37 transitions [2020-02-10 23:00:11,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 37 transitions [2020-02-10 23:00:11,695 INFO L479 AbstractCegarLoop]: Abstraction has has 162 places, 37 transitions [2020-02-10 23:00:11,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:11,718 INFO L129 PetriNetUnfolder]: 0/67 cut-off events. [2020-02-10 23:00:11,718 INFO L130 PetriNetUnfolder]: For 4162/4198 co-relation queries the response was YES. [2020-02-10 23:00:11,718 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:11,718 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:11,718 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:11,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:11,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1469997957, now seen corresponding path program 22 times [2020-02-10 23:00:11,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:11,724 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630867616] [2020-02-10 23:00:11,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:11,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630867616] [2020-02-10 23:00:11,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:11,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:11,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919821327] [2020-02-10 23:00:11,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:11,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:11,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:11,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:11,847 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:11,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 37 transitions. Second operand 6 states. [2020-02-10 23:00:11,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:11,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:11,849 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:11,964 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2020-02-10 23:00:11,965 INFO L130 PetriNetUnfolder]: For 4210/4255 co-relation queries the response was YES. [2020-02-10 23:00:11,967 INFO L76 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 69 events. 0/69 cut-off events. For 4210/4255 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 363 event pairs. 9/77 useless extension candidates. Maximal degree in co-relation 598. Up to 12 conditions per place. [2020-02-10 23:00:11,970 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 16 changer transitions 0/37 dead transitions. [2020-02-10 23:00:11,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:11,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2020-02-10 23:00:11,972 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7905982905982906 [2020-02-10 23:00:11,972 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 185 transitions. [2020-02-10 23:00:11,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 185 transitions. [2020-02-10 23:00:11,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:11,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 185 transitions. [2020-02-10 23:00:11,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:11,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:11,974 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:11,974 INFO L178 Difference]: Start difference. First operand has 162 places, 37 transitions. Second operand 6 states and 185 transitions. [2020-02-10 23:00:11,975 INFO L206 Difference]: Finished difference. Result has 168 places, 37 transitions [2020-02-10 23:00:11,976 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1069, PETRI_PLACES=168, PETRI_TRANSITIONS=37} [2020-02-10 23:00:11,976 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 168 places, 37 transitions [2020-02-10 23:00:12,000 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2020-02-10 23:00:12,000 INFO L130 PetriNetUnfolder]: For 4169/4205 co-relation queries the response was YES. [2020-02-10 23:00:12,002 INFO L76 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 69 events. 0/69 cut-off events. For 4169/4205 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 368 event pairs. 0/67 useless extension candidates. Maximal degree in co-relation 586. Up to 12 conditions per place. [2020-02-10 23:00:12,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 37 transitions [2020-02-10 23:00:12,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 37 transitions [2020-02-10 23:00:12,005 INFO L479 AbstractCegarLoop]: Abstraction has has 168 places, 37 transitions [2020-02-10 23:00:12,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:12,030 INFO L129 PetriNetUnfolder]: 0/67 cut-off events. [2020-02-10 23:00:12,030 INFO L130 PetriNetUnfolder]: For 3870/3885 co-relation queries the response was YES. [2020-02-10 23:00:12,030 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:12,030 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:12,031 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:12,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:12,031 INFO L82 PathProgramCache]: Analyzing trace with hash 50261699, now seen corresponding path program 23 times [2020-02-10 23:00:12,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:12,031 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784327977] [2020-02-10 23:00:12,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:12,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784327977] [2020-02-10 23:00:12,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:12,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:12,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957867391] [2020-02-10 23:00:12,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:12,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:12,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:12,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:12,128 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:12,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 37 transitions. Second operand 6 states. [2020-02-10 23:00:12,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:12,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:12,129 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:12,217 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2020-02-10 23:00:12,217 INFO L130 PetriNetUnfolder]: For 4061/4100 co-relation queries the response was YES. [2020-02-10 23:00:12,220 INFO L76 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 68 events. 0/68 cut-off events. For 4061/4100 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 360 event pairs. 5/71 useless extension candidates. Maximal degree in co-relation 593. Up to 14 conditions per place. [2020-02-10 23:00:12,222 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 10 selfloop transitions, 9 changer transitions 11/38 dead transitions. [2020-02-10 23:00:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:12,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2020-02-10 23:00:12,224 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7905982905982906 [2020-02-10 23:00:12,224 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 185 transitions. [2020-02-10 23:00:12,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 185 transitions. [2020-02-10 23:00:12,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:12,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 185 transitions. [2020-02-10 23:00:12,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:12,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:12,225 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:12,226 INFO L178 Difference]: Start difference. First operand has 168 places, 37 transitions. Second operand 6 states and 185 transitions. [2020-02-10 23:00:12,227 INFO L206 Difference]: Finished difference. Result has 175 places, 27 transitions [2020-02-10 23:00:12,227 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=677, PETRI_PLACES=175, PETRI_TRANSITIONS=27} [2020-02-10 23:00:12,227 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 175 places, 27 transitions [2020-02-10 23:00:12,247 INFO L129 PetriNetUnfolder]: 0/44 cut-off events. [2020-02-10 23:00:12,247 INFO L130 PetriNetUnfolder]: For 2130/2136 co-relation queries the response was YES. [2020-02-10 23:00:12,249 INFO L76 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 44 events. 0/44 cut-off events. For 2130/2136 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 171 event pairs. 0/43 useless extension candidates. Maximal degree in co-relation 348. Up to 8 conditions per place. [2020-02-10 23:00:12,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 27 transitions [2020-02-10 23:00:12,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 27 transitions [2020-02-10 23:00:12,252 INFO L479 AbstractCegarLoop]: Abstraction has has 158 places, 27 transitions [2020-02-10 23:00:12,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:12,270 INFO L129 PetriNetUnfolder]: 0/43 cut-off events. [2020-02-10 23:00:12,270 INFO L130 PetriNetUnfolder]: For 2251/2259 co-relation queries the response was YES. [2020-02-10 23:00:12,270 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:12,270 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:12,271 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:00:12,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:12,271 INFO L82 PathProgramCache]: Analyzing trace with hash 794964197, now seen corresponding path program 24 times [2020-02-10 23:00:12,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:12,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297672356] [2020-02-10 23:00:12,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:12,368 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297672356] [2020-02-10 23:00:12,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:12,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:00:12,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250654439] [2020-02-10 23:00:12,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:00:12,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:12,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:00:12,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:00:12,370 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:00:12,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 27 transitions. Second operand 6 states. [2020-02-10 23:00:12,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:12,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:00:12,371 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:12,430 INFO L129 PetriNetUnfolder]: 0/43 cut-off events. [2020-02-10 23:00:12,430 INFO L130 PetriNetUnfolder]: For 2174/2179 co-relation queries the response was YES. [2020-02-10 23:00:12,432 INFO L76 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 43 events. 0/43 cut-off events. For 2174/2179 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 176 event pairs. 1/43 useless extension candidates. Maximal degree in co-relation 342. Up to 8 conditions per place. [2020-02-10 23:00:12,433 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2020-02-10 23:00:12,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:00:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:00:12,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2020-02-10 23:00:12,435 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2020-02-10 23:00:12,435 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 183 transitions. [2020-02-10 23:00:12,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 183 transitions. [2020-02-10 23:00:12,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:12,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 183 transitions. [2020-02-10 23:00:12,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:00:12,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:00:12,437 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:00:12,437 INFO L178 Difference]: Start difference. First operand has 158 places, 27 transitions. Second operand 6 states and 183 transitions. [2020-02-10 23:00:12,437 INFO L206 Difference]: Finished difference. Result has 163 places, 0 transitions [2020-02-10 23:00:12,438 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=163, PETRI_TRANSITIONS=0} [2020-02-10 23:00:12,438 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 163 places, 0 transitions [2020-02-10 23:00:12,439 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2020-02-10 23:00:12,440 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-02-10 23:00:12,440 INFO L76 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-02-10 23:00:12,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 0 transitions [2020-02-10 23:00:12,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions [2020-02-10 23:00:12,441 INFO L479 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions [2020-02-10 23:00:12,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:00:12,441 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2020-02-10 23:00:12,441 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-02-10 23:00:12,446 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:00:12 BasicIcfg [2020-02-10 23:00:12,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 23:00:12,448 INFO L168 Benchmark]: Toolchain (without parser) took 8529.62 ms. Allocated memory was 136.3 MB in the beginning and 347.6 MB in the end (delta: 211.3 MB). Free memory was 118.3 MB in the beginning and 80.8 MB in the end (delta: 37.5 MB). Peak memory consumption was 248.7 MB. Max. memory is 7.1 GB. [2020-02-10 23:00:12,448 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-10 23:00:12,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.13 ms. Allocated memory is still 136.3 MB. Free memory was 118.1 MB in the beginning and 116.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-02-10 23:00:12,450 INFO L168 Benchmark]: Boogie Preprocessor took 19.16 ms. Allocated memory is still 136.3 MB. Free memory was 116.3 MB in the beginning and 115.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-02-10 23:00:12,450 INFO L168 Benchmark]: RCFGBuilder took 288.79 ms. Allocated memory is still 136.3 MB. Free memory was 115.2 MB in the beginning and 104.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-02-10 23:00:12,451 INFO L168 Benchmark]: TraceAbstraction took 8178.26 ms. Allocated memory was 136.3 MB in the beginning and 347.6 MB in the end (delta: 211.3 MB). Free memory was 104.3 MB in the beginning and 80.8 MB in the end (delta: 23.4 MB). Peak memory consumption was 234.7 MB. Max. memory is 7.1 GB. [2020-02-10 23:00:12,453 INFO L336 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 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 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 35.13 ms. Allocated memory is still 136.3 MB. Free memory was 118.1 MB in the beginning and 116.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.16 ms. Allocated memory is still 136.3 MB. Free memory was 116.3 MB in the beginning and 115.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.79 ms. Allocated memory is still 136.3 MB. Free memory was 115.2 MB in the beginning and 104.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8178.26 ms. Allocated memory was 136.3 MB in the beginning and 347.6 MB in the end (delta: 211.3 MB). Free memory was 104.3 MB in the beginning and 80.8 MB in the end (delta: 23.4 MB). Peak memory consumption was 234.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.0s, 30 ProgramPointsBefore, 26 ProgramPointsAfterwards, 29 TransitionsBefore, 25 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 60 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 66 CheckedPairsTotal, 4 TotalNumberOfCompositions - PositiveResult [Line: 21]: 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 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 7.9s, OverallIterations: 27, TraceHistogramMax: 1, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 233 SDtfs, 224 SDslu, 145 SDs, 0 SdLazy, 399 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 27 MinimizatonAttempts, 207 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 44052 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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...