/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_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 21:18:31,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 21:18:31,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 21:18:31,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 21:18:31,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 21:18:31,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 21:18:31,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 21:18:31,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 21:18:31,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 21:18:31,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 21:18:31,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 21:18:31,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 21:18:31,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 21:18:31,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 21:18:31,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 21:18:31,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 21:18:31,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 21:18:31,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 21:18:31,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 21:18:31,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 21:18:31,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 21:18:31,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 21:18:31,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 21:18:31,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 21:18:31,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 21:18:31,816 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 [2020-01-16 21:18:31,837 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 21:18:31,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 21:18:31,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 21:18:31,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 21:18:31,839 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 21:18:31,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 21:18:31,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 21:18:31,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 21:18:31,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 21:18:31,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 21:18:31,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 21:18:31,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 21:18:31,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 21:18:31,841 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 21:18:31,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 21:18:31,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 21:18:31,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 21:18:31,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 21:18:31,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 21:18:31,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 21:18:31,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 21:18:31,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 21:18:31,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 21:18:31,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 21:18:31,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 21:18:31,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 21:18:31,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 21:18:31,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-01-16 21:18:31,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 21:18:32,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 21:18:32,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 21:18:32,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 21:18:32,157 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 21:18:32,157 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 21:18:32,157 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2020-01-16 21:18:32,158 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2020-01-16 21:18:32,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 21:18:32,196 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 21:18:32,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 21:18:32,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 21:18:32,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 21:18:32,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:32" (1/1) ... [2020-01-16 21:18:32,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:32" (1/1) ... [2020-01-16 21:18:32,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 21:18:32,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 21:18:32,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 21:18:32,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 21:18:32,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:32" (1/1) ... [2020-01-16 21:18:32,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:32" (1/1) ... [2020-01-16 21:18:32,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:32" (1/1) ... [2020-01-16 21:18:32,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:32" (1/1) ... [2020-01-16 21:18:32,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:32" (1/1) ... [2020-01-16 21:18:32,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:32" (1/1) ... [2020-01-16 21:18:32,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:32" (1/1) ... [2020-01-16 21:18:32,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 21:18:32,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 21:18:32,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 21:18:32,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 21:18:32,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 21:18:32,340 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 21:18:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 21:18:32,341 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 21:18:32,343 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 21:18:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 21:18:32,344 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 21:18:32,344 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 21:18:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 21:18:32,344 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 21:18:32,345 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 21:18:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 21:18:32,345 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 21:18:32,345 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 21:18:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 21:18:32,346 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 21:18:32,346 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 21:18:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 21:18:32,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 21:18:32,347 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 21:18:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 21:18:32,348 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 21:18:32,349 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 21:18:32,591 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 21:18:32,592 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 21:18:32,594 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 09:18:32 BoogieIcfgContainer [2020-01-16 21:18:32,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 21:18:32,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 21:18:32,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 21:18:32,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 21:18:32,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:32" (1/2) ... [2020-01-16 21:18:32,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac6bd82 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 09:18:32, skipping insertion in model container [2020-01-16 21:18:32,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 09:18:32" (2/2) ... [2020-01-16 21:18:32,604 INFO L109 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2020-01-16 21:18:32,619 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 21:18:32,629 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 21:18:32,630 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 21:18:32,787 INFO L250 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-01-16 21:18:32,808 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 21:18:32,808 INFO L375 AbstractCegarLoop]: Hoare is false [2020-01-16 21:18:32,808 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 21:18:32,808 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 21:18:32,808 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 21:18:32,809 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 21:18:32,811 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 21:18:32,812 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 21:18:32,835 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 63 transitions [2020-01-16 21:18:32,836 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 52 places, 63 transitions [2020-01-16 21:18:32,971 INFO L129 PetriNetUnfolder]: 129/213 cut-off events. [2020-01-16 21:18:32,971 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-01-16 21:18:32,987 INFO L76 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 213 events. 129/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 773 event pairs. 0/212 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2020-01-16 21:18:32,993 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 52 places, 63 transitions [2020-01-16 21:18:33,078 INFO L129 PetriNetUnfolder]: 129/213 cut-off events. [2020-01-16 21:18:33,078 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-01-16 21:18:33,082 INFO L76 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 213 events. 129/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 773 event pairs. 0/212 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2020-01-16 21:18:33,087 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 780 [2020-01-16 21:18:33,089 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-01-16 21:18:33,264 INFO L206 etLargeBlockEncoding]: Checked pairs total: 225 [2020-01-16 21:18:33,264 INFO L214 etLargeBlockEncoding]: Total number of compositions: 7 [2020-01-16 21:18:33,264 INFO L162 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 433 [2020-01-16 21:18:33,321 INFO L129 PetriNetUnfolder]: 129/204 cut-off events. [2020-01-16 21:18:33,322 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-01-16 21:18:33,322 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:33,323 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:33,323 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:33,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:33,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1369247736, now seen corresponding path program 1 times [2020-01-16 21:18:33,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:33,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109950166] [2020-01-16 21:18:33,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:33,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109950166] [2020-01-16 21:18:33,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:33,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:33,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271289843] [2020-01-16 21:18:33,510 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:33,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:33,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:33,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:33,530 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 70 [2020-01-16 21:18:33,531 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 56 transitions. Second operand 3 states. [2020-01-16 21:18:33,532 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:33,532 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 70 [2020-01-16 21:18:33,533 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:33,609 INFO L129 PetriNetUnfolder]: 124/200 cut-off events. [2020-01-16 21:18:33,610 INFO L130 PetriNetUnfolder]: For 252/252 co-relation queries the response was YES. [2020-01-16 21:18:33,611 INFO L76 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 200 events. 124/200 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 667 event pairs. 1/200 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2020-01-16 21:18:33,612 INFO L123 encePairwiseOnDemand]: 68/70 looper letters, 5 selfloop transitions, 2 changer transitions [2020-01-16 21:18:33,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2020-01-16 21:18:33,628 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2020-01-16 21:18:33,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2020-01-16 21:18:33,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2020-01-16 21:18:33,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:33,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2020-01-16 21:18:33,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:33,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:33,644 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:33,646 INFO L174 Difference]: Start difference. First operand has 44 places, 56 transitions. Second operand 3 states and 196 transitions. [2020-01-16 21:18:33,647 INFO L199 Difference]: Finished difference. Result has 46 places, 49 transitions [2020-01-16 21:18:33,649 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=46, PETRI_TRANSITIONS=49} [2020-01-16 21:18:33,651 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 46 places, 49 transitions [2020-01-16 21:18:33,651 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 46 places, 49 transitions [2020-01-16 21:18:33,674 INFO L129 PetriNetUnfolder]: 124/200 cut-off events. [2020-01-16 21:18:33,674 INFO L130 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2020-01-16 21:18:33,676 INFO L76 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 200 events. 124/200 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 629 event pairs. 0/199 useless extension candidates. Maximal degree in co-relation 391. Up to 60 conditions per place. [2020-01-16 21:18:33,678 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 7 of 46 places, 0 of 49 transitions, 1 of 222 flow. [2020-01-16 21:18:33,680 INFO L478 AbstractCegarLoop]: Abstraction has has 39 places, 49 transitions [2020-01-16 21:18:33,680 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:33,701 INFO L129 PetriNetUnfolder]: 124/198 cut-off events. [2020-01-16 21:18:33,702 INFO L130 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2020-01-16 21:18:33,702 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:33,702 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:33,702 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:33,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:33,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1028200232, now seen corresponding path program 1 times [2020-01-16 21:18:33,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:33,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725517559] [2020-01-16 21:18:33,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:33,735 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725517559] [2020-01-16 21:18:33,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:33,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:33,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841696109] [2020-01-16 21:18:33,738 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:33,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:33,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:33,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:33,740 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 70 [2020-01-16 21:18:33,740 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 49 transitions. Second operand 3 states. [2020-01-16 21:18:33,740 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:33,740 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 70 [2020-01-16 21:18:33,740 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:33,777 INFO L129 PetriNetUnfolder]: 100/170 cut-off events. [2020-01-16 21:18:33,777 INFO L130 PetriNetUnfolder]: For 225/225 co-relation queries the response was YES. [2020-01-16 21:18:33,778 INFO L76 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 170 events. 100/170 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 558 event pairs. 5/174 useless extension candidates. Maximal degree in co-relation 171. Up to 60 conditions per place. [2020-01-16 21:18:33,779 INFO L123 encePairwiseOnDemand]: 67/70 looper letters, 4 selfloop transitions, 3 changer transitions [2020-01-16 21:18:33,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2020-01-16 21:18:33,782 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2020-01-16 21:18:33,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2020-01-16 21:18:33,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2020-01-16 21:18:33,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:33,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2020-01-16 21:18:33,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:33,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:33,786 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:33,786 INFO L174 Difference]: Start difference. First operand has 39 places, 49 transitions. Second operand 3 states and 196 transitions. [2020-01-16 21:18:33,787 INFO L199 Difference]: Finished difference. Result has 41 places, 47 transitions [2020-01-16 21:18:33,787 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=41, PETRI_TRANSITIONS=47} [2020-01-16 21:18:33,788 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 41 places, 47 transitions [2020-01-16 21:18:33,788 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 41 places, 47 transitions [2020-01-16 21:18:33,808 INFO L129 PetriNetUnfolder]: 100/170 cut-off events. [2020-01-16 21:18:33,809 INFO L130 PetriNetUnfolder]: For 158/158 co-relation queries the response was YES. [2020-01-16 21:18:33,810 INFO L76 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 170 events. 100/170 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 539 event pairs. 0/169 useless extension candidates. Maximal degree in co-relation 328. Up to 60 conditions per place. [2020-01-16 21:18:33,811 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 41 places, 0 of 47 transitions, 1 of 213 flow. [2020-01-16 21:18:33,811 INFO L478 AbstractCegarLoop]: Abstraction has has 40 places, 47 transitions [2020-01-16 21:18:33,811 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:33,833 INFO L129 PetriNetUnfolder]: 100/168 cut-off events. [2020-01-16 21:18:33,833 INFO L130 PetriNetUnfolder]: For 158/158 co-relation queries the response was YES. [2020-01-16 21:18:33,833 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:33,833 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:33,834 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:33,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:33,834 INFO L82 PathProgramCache]: Analyzing trace with hash 837236974, now seen corresponding path program 1 times [2020-01-16 21:18:33,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:33,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248861908] [2020-01-16 21:18:33,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:33,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248861908] [2020-01-16 21:18:33,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:33,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:33,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481430629] [2020-01-16 21:18:33,888 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:33,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:33,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:33,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:33,890 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 70 [2020-01-16 21:18:33,891 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 47 transitions. Second operand 3 states. [2020-01-16 21:18:33,891 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:33,891 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 70 [2020-01-16 21:18:33,891 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:33,929 INFO L129 PetriNetUnfolder]: 35/80 cut-off events. [2020-01-16 21:18:33,929 INFO L130 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2020-01-16 21:18:33,931 INFO L76 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 80 events. 35/80 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 212 event pairs. 20/99 useless extension candidates. Maximal degree in co-relation 119. Up to 20 conditions per place. [2020-01-16 21:18:33,932 INFO L123 encePairwiseOnDemand]: 65/70 looper letters, 2 selfloop transitions, 5 changer transitions [2020-01-16 21:18:33,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:33,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2020-01-16 21:18:33,940 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2020-01-16 21:18:33,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2020-01-16 21:18:33,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2020-01-16 21:18:33,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:33,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2020-01-16 21:18:33,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:33,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:33,947 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:33,947 INFO L174 Difference]: Start difference. First operand has 40 places, 47 transitions. Second operand 3 states and 196 transitions. [2020-01-16 21:18:33,948 INFO L199 Difference]: Finished difference. Result has 42 places, 43 transitions [2020-01-16 21:18:33,949 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2020-01-16 21:18:33,949 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 42 places, 43 transitions [2020-01-16 21:18:33,950 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 42 places, 43 transitions [2020-01-16 21:18:33,976 INFO L129 PetriNetUnfolder]: 35/80 cut-off events. [2020-01-16 21:18:33,977 INFO L130 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2020-01-16 21:18:33,978 INFO L76 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 80 events. 35/80 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 187 event pairs. 0/79 useless extension candidates. Maximal degree in co-relation 142. Up to 20 conditions per place. [2020-01-16 21:18:33,979 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 42 places, 0 of 43 transitions, 1 of 194 flow. [2020-01-16 21:18:33,979 INFO L478 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions [2020-01-16 21:18:33,979 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:33,989 INFO L129 PetriNetUnfolder]: 35/78 cut-off events. [2020-01-16 21:18:33,990 INFO L130 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2020-01-16 21:18:33,990 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:33,990 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:33,990 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:33,992 INFO L82 PathProgramCache]: Analyzing trace with hash 93797896, now seen corresponding path program 1 times [2020-01-16 21:18:33,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:33,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244775660] [2020-01-16 21:18:33,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:34,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:34,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244775660] [2020-01-16 21:18:34,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:34,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:34,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768154164] [2020-01-16 21:18:34,074 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:34,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:34,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:34,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:34,078 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 70 [2020-01-16 21:18:34,079 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions. Second operand 3 states. [2020-01-16 21:18:34,079 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:34,079 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 70 [2020-01-16 21:18:34,080 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:34,095 INFO L129 PetriNetUnfolder]: 6/32 cut-off events. [2020-01-16 21:18:34,099 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2020-01-16 21:18:34,100 INFO L76 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 32 events. 6/32 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs. 11/42 useless extension candidates. Maximal degree in co-relation 42. Up to 6 conditions per place. [2020-01-16 21:18:34,100 INFO L123 encePairwiseOnDemand]: 64/70 looper letters, 1 selfloop transitions, 6 changer transitions [2020-01-16 21:18:34,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:34,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2020-01-16 21:18:34,104 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2020-01-16 21:18:34,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2020-01-16 21:18:34,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2020-01-16 21:18:34,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:34,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2020-01-16 21:18:34,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:34,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:34,110 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:34,111 INFO L174 Difference]: Start difference. First operand has 41 places, 43 transitions. Second operand 3 states and 196 transitions. [2020-01-16 21:18:34,111 INFO L199 Difference]: Finished difference. Result has 43 places, 29 transitions [2020-01-16 21:18:34,112 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2020-01-16 21:18:34,112 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 43 places, 29 transitions [2020-01-16 21:18:34,112 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 43 places, 29 transitions [2020-01-16 21:18:34,119 INFO L129 PetriNetUnfolder]: 6/32 cut-off events. [2020-01-16 21:18:34,119 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-01-16 21:18:34,120 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 32 events. 6/32 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs. 0/31 useless extension candidates. Maximal degree in co-relation 43. Up to 6 conditions per place. [2020-01-16 21:18:34,122 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 43 places, 0 of 29 transitions, 1 of 125 flow. [2020-01-16 21:18:34,122 INFO L478 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions [2020-01-16 21:18:34,122 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:34,126 INFO L129 PetriNetUnfolder]: 6/30 cut-off events. [2020-01-16 21:18:34,127 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-01-16 21:18:34,127 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:34,128 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:34,128 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:34,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:34,128 INFO L82 PathProgramCache]: Analyzing trace with hash -227958754, now seen corresponding path program 1 times [2020-01-16 21:18:34,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:34,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892003468] [2020-01-16 21:18:34,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:34,188 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892003468] [2020-01-16 21:18:34,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:34,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:34,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205840198] [2020-01-16 21:18:34,190 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:34,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:34,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:34,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:34,191 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 70 [2020-01-16 21:18:34,191 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions. Second operand 3 states. [2020-01-16 21:18:34,191 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:34,192 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 70 [2020-01-16 21:18:34,193 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:34,204 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2020-01-16 21:18:34,205 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-01-16 21:18:34,205 INFO L76 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 20 events. 0/20 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs. 3/22 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2020-01-16 21:18:34,205 INFO L123 encePairwiseOnDemand]: 66/70 looper letters, 1 selfloop transitions, 4 changer transitions [2020-01-16 21:18:34,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:34,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2020-01-16 21:18:34,208 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9238095238095239 [2020-01-16 21:18:34,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 194 transitions. [2020-01-16 21:18:34,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 194 transitions. [2020-01-16 21:18:34,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:34,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 194 transitions. [2020-01-16 21:18:34,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:34,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:34,212 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:34,212 INFO L174 Difference]: Start difference. First operand has 42 places, 29 transitions. Second operand 3 states and 194 transitions. [2020-01-16 21:18:34,213 INFO L199 Difference]: Finished difference. Result has 44 places, 20 transitions [2020-01-16 21:18:34,213 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=44, PETRI_TRANSITIONS=20} [2020-01-16 21:18:34,213 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 44 places, 20 transitions [2020-01-16 21:18:34,213 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 20 transitions [2020-01-16 21:18:34,217 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2020-01-16 21:18:34,217 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-01-16 21:18:34,218 INFO L76 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 0/20 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs. 0/19 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2020-01-16 21:18:34,218 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 44 places, 0 of 20 transitions, 1 of 81 flow. [2020-01-16 21:18:34,219 INFO L478 AbstractCegarLoop]: Abstraction has has 43 places, 20 transitions [2020-01-16 21:18:34,219 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:34,222 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2020-01-16 21:18:34,222 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-01-16 21:18:34,222 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:34,222 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:34,223 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:34,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:34,223 INFO L82 PathProgramCache]: Analyzing trace with hash 254796046, now seen corresponding path program 1 times [2020-01-16 21:18:34,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:34,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424556101] [2020-01-16 21:18:34,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:34,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424556101] [2020-01-16 21:18:34,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:34,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:34,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196350256] [2020-01-16 21:18:34,669 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:34,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:34,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:34,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:34,671 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:34,671 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 20 transitions. Second operand 8 states. [2020-01-16 21:18:34,671 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:34,671 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:34,672 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:34,879 INFO L129 PetriNetUnfolder]: 152/310 cut-off events. [2020-01-16 21:18:34,879 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2020-01-16 21:18:34,881 INFO L76 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 310 events. 152/310 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1368 event pairs. 0/280 useless extension candidates. Maximal degree in co-relation 574. Up to 97 conditions per place. [2020-01-16 21:18:34,882 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 21 selfloop transitions, 12 changer transitions [2020-01-16 21:18:34,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:34,885 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:34,885 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:34,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:34,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:34,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:34,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:34,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:34,889 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:34,889 INFO L174 Difference]: Start difference. First operand has 43 places, 20 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:34,890 INFO L199 Difference]: Finished difference. Result has 56 places, 30 transitions [2020-01-16 21:18:34,890 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=152, PETRI_PLACES=56, PETRI_TRANSITIONS=30} [2020-01-16 21:18:34,890 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 56 places, 30 transitions [2020-01-16 21:18:34,891 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 56 places, 30 transitions [2020-01-16 21:18:34,900 INFO L129 PetriNetUnfolder]: 5/62 cut-off events. [2020-01-16 21:18:34,900 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-01-16 21:18:34,901 INFO L76 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 62 events. 5/62 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 201 event pairs. 0/57 useless extension candidates. Maximal degree in co-relation 108. Up to 7 conditions per place. [2020-01-16 21:18:34,902 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 56 places, 0 of 30 transitions, 0 of 152 flow. [2020-01-16 21:18:34,902 INFO L478 AbstractCegarLoop]: Abstraction has has 56 places, 30 transitions [2020-01-16 21:18:34,902 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:34,911 INFO L129 PetriNetUnfolder]: 5/56 cut-off events. [2020-01-16 21:18:34,911 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-01-16 21:18:34,911 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:34,912 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:34,912 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:34,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:34,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1029431270, now seen corresponding path program 2 times [2020-01-16 21:18:34,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:34,913 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107990257] [2020-01-16 21:18:34,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:35,273 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107990257] [2020-01-16 21:18:35,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:35,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:35,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712209603] [2020-01-16 21:18:35,274 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:35,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:35,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:35,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:35,276 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:35,277 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 30 transitions. Second operand 8 states. [2020-01-16 21:18:35,277 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:35,277 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:35,278 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:35,466 INFO L129 PetriNetUnfolder]: 152/321 cut-off events. [2020-01-16 21:18:35,466 INFO L130 PetriNetUnfolder]: For 399/412 co-relation queries the response was YES. [2020-01-16 21:18:35,469 INFO L76 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 321 events. 152/321 cut-off events. For 399/412 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1466 event pairs. 1/296 useless extension candidates. Maximal degree in co-relation 884. Up to 97 conditions per place. [2020-01-16 21:18:35,469 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 21 selfloop transitions, 15 changer transitions [2020-01-16 21:18:35,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:35,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:35,472 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:35,472 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:35,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:35,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:35,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:35,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:35,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:35,476 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:35,476 INFO L174 Difference]: Start difference. First operand has 56 places, 30 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:35,478 INFO L199 Difference]: Finished difference. Result has 66 places, 34 transitions [2020-01-16 21:18:35,478 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=226, PETRI_PLACES=66, PETRI_TRANSITIONS=34} [2020-01-16 21:18:35,481 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 66 places, 34 transitions [2020-01-16 21:18:35,481 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 66 places, 34 transitions [2020-01-16 21:18:35,492 INFO L129 PetriNetUnfolder]: 7/80 cut-off events. [2020-01-16 21:18:35,492 INFO L130 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2020-01-16 21:18:35,500 INFO L76 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 80 events. 7/80 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 310 event pairs. 0/74 useless extension candidates. Maximal degree in co-relation 160. Up to 9 conditions per place. [2020-01-16 21:18:35,501 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 66 places, 0 of 34 transitions, 8 of 226 flow. [2020-01-16 21:18:35,502 INFO L478 AbstractCegarLoop]: Abstraction has has 65 places, 34 transitions [2020-01-16 21:18:35,503 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:35,513 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-01-16 21:18:35,513 INFO L130 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2020-01-16 21:18:35,513 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:35,513 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:35,513 INFO L426 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:35,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:35,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1294274172, now seen corresponding path program 3 times [2020-01-16 21:18:35,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:35,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882958469] [2020-01-16 21:18:35,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:35,853 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882958469] [2020-01-16 21:18:35,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:35,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:35,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527383208] [2020-01-16 21:18:35,854 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:35,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:35,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:35,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:35,856 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:35,856 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 34 transitions. Second operand 8 states. [2020-01-16 21:18:35,856 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:35,856 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:35,856 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:36,133 INFO L129 PetriNetUnfolder]: 159/392 cut-off events. [2020-01-16 21:18:36,134 INFO L130 PetriNetUnfolder]: For 851/864 co-relation queries the response was YES. [2020-01-16 21:18:36,137 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 392 events. 159/392 cut-off events. For 851/864 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2078 event pairs. 1/366 useless extension candidates. Maximal degree in co-relation 1153. Up to 97 conditions per place. [2020-01-16 21:18:36,137 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 26 selfloop transitions, 23 changer transitions [2020-01-16 21:18:36,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:36,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:36,140 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:36,140 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:36,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:36,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:36,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:36,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:36,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:36,144 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:36,144 INFO L174 Difference]: Start difference. First operand has 65 places, 34 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:36,145 INFO L199 Difference]: Finished difference. Result has 77 places, 45 transitions [2020-01-16 21:18:36,145 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=398, PETRI_PLACES=77, PETRI_TRANSITIONS=45} [2020-01-16 21:18:36,146 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 77 places, 45 transitions [2020-01-16 21:18:36,146 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 77 places, 45 transitions [2020-01-16 21:18:36,169 INFO L129 PetriNetUnfolder]: 14/146 cut-off events. [2020-01-16 21:18:36,169 INFO L130 PetriNetUnfolder]: For 517/517 co-relation queries the response was YES. [2020-01-16 21:18:36,171 INFO L76 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 146 events. 14/146 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 821 event pairs. 0/134 useless extension candidates. Maximal degree in co-relation 343. Up to 16 conditions per place. [2020-01-16 21:18:36,172 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 77 places, 0 of 45 transitions, 0 of 398 flow. [2020-01-16 21:18:36,172 INFO L478 AbstractCegarLoop]: Abstraction has has 77 places, 45 transitions [2020-01-16 21:18:36,172 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:36,192 INFO L129 PetriNetUnfolder]: 14/134 cut-off events. [2020-01-16 21:18:36,192 INFO L130 PetriNetUnfolder]: For 517/517 co-relation queries the response was YES. [2020-01-16 21:18:36,192 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:36,193 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:36,193 INFO L426 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:36,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:36,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1180609652, now seen corresponding path program 4 times [2020-01-16 21:18:36,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:36,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801088925] [2020-01-16 21:18:36,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:36,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801088925] [2020-01-16 21:18:36,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:36,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:36,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515392302] [2020-01-16 21:18:36,482 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:36,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:36,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:36,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:36,484 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:36,484 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 45 transitions. Second operand 8 states. [2020-01-16 21:18:36,484 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:36,484 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:36,484 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:36,752 INFO L129 PetriNetUnfolder]: 182/476 cut-off events. [2020-01-16 21:18:36,752 INFO L130 PetriNetUnfolder]: For 1806/1819 co-relation queries the response was YES. [2020-01-16 21:18:36,757 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 476 events. 182/476 cut-off events. For 1806/1819 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2808 event pairs. 1/451 useless extension candidates. Maximal degree in co-relation 1583. Up to 163 conditions per place. [2020-01-16 21:18:36,758 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 33 selfloop transitions, 29 changer transitions [2020-01-16 21:18:36,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:36,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:36,761 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:36,761 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:36,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:36,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:36,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:36,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:36,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:36,767 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:36,767 INFO L174 Difference]: Start difference. First operand has 77 places, 45 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:36,768 INFO L199 Difference]: Finished difference. Result has 90 places, 55 transitions [2020-01-16 21:18:36,768 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=627, PETRI_PLACES=90, PETRI_TRANSITIONS=55} [2020-01-16 21:18:36,769 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 90 places, 55 transitions [2020-01-16 21:18:36,769 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 90 places, 55 transitions [2020-01-16 21:18:36,812 INFO L129 PetriNetUnfolder]: 19/189 cut-off events. [2020-01-16 21:18:36,813 INFO L130 PetriNetUnfolder]: For 1182/1182 co-relation queries the response was YES. [2020-01-16 21:18:36,815 INFO L76 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 189 events. 19/189 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1215 event pairs. 0/173 useless extension candidates. Maximal degree in co-relation 559. Up to 21 conditions per place. [2020-01-16 21:18:36,816 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 90 places, 0 of 55 transitions, 20 of 627 flow. [2020-01-16 21:18:36,816 INFO L478 AbstractCegarLoop]: Abstraction has has 89 places, 55 transitions [2020-01-16 21:18:36,816 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:36,859 INFO L129 PetriNetUnfolder]: 19/173 cut-off events. [2020-01-16 21:18:36,859 INFO L130 PetriNetUnfolder]: For 1182/1182 co-relation queries the response was YES. [2020-01-16 21:18:36,859 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:36,859 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:36,860 INFO L426 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:36,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1635054268, now seen corresponding path program 5 times [2020-01-16 21:18:36,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:36,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79408558] [2020-01-16 21:18:36,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:37,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79408558] [2020-01-16 21:18:37,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:37,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:37,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215194270] [2020-01-16 21:18:37,129 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:37,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:37,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:37,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:37,131 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:37,131 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 55 transitions. Second operand 8 states. [2020-01-16 21:18:37,131 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:37,132 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:37,132 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:37,449 INFO L129 PetriNetUnfolder]: 183/516 cut-off events. [2020-01-16 21:18:37,449 INFO L130 PetriNetUnfolder]: For 3291/3360 co-relation queries the response was YES. [2020-01-16 21:18:37,458 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 516 events. 183/516 cut-off events. For 3291/3360 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3223 event pairs. 3/493 useless extension candidates. Maximal degree in co-relation 1906. Up to 163 conditions per place. [2020-01-16 21:18:37,459 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 35 selfloop transitions, 35 changer transitions [2020-01-16 21:18:37,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:37,463 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:37,463 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:37,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:37,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:37,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:37,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:37,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:37,468 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:37,468 INFO L174 Difference]: Start difference. First operand has 89 places, 55 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:37,469 INFO L199 Difference]: Finished difference. Result has 100 places, 63 transitions [2020-01-16 21:18:37,469 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=831, PETRI_PLACES=100, PETRI_TRANSITIONS=63} [2020-01-16 21:18:37,470 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 100 places, 63 transitions [2020-01-16 21:18:37,470 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 100 places, 63 transitions [2020-01-16 21:18:37,549 INFO L129 PetriNetUnfolder]: 24/238 cut-off events. [2020-01-16 21:18:37,549 INFO L130 PetriNetUnfolder]: For 2119/2119 co-relation queries the response was YES. [2020-01-16 21:18:37,552 INFO L76 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 238 events. 24/238 cut-off events. For 2119/2119 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1684 event pairs. 0/218 useless extension candidates. Maximal degree in co-relation 774. Up to 26 conditions per place. [2020-01-16 21:18:37,554 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 100 places, 0 of 63 transitions, 0 of 831 flow. [2020-01-16 21:18:37,554 INFO L478 AbstractCegarLoop]: Abstraction has has 100 places, 63 transitions [2020-01-16 21:18:37,554 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:37,619 INFO L129 PetriNetUnfolder]: 24/218 cut-off events. [2020-01-16 21:18:37,619 INFO L130 PetriNetUnfolder]: For 2119/2119 co-relation queries the response was YES. [2020-01-16 21:18:37,619 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:37,619 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:37,620 INFO L426 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:37,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:37,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1566429444, now seen corresponding path program 6 times [2020-01-16 21:18:37,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:37,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471687863] [2020-01-16 21:18:37,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:37,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:37,908 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471687863] [2020-01-16 21:18:37,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:37,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:37,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592087312] [2020-01-16 21:18:37,909 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:37,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:37,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:37,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:37,910 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:37,911 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 63 transitions. Second operand 8 states. [2020-01-16 21:18:37,911 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:37,911 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:37,911 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:38,215 INFO L129 PetriNetUnfolder]: 183/529 cut-off events. [2020-01-16 21:18:38,215 INFO L130 PetriNetUnfolder]: For 4435/4465 co-relation queries the response was YES. [2020-01-16 21:18:38,222 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 529 events. 183/529 cut-off events. For 4435/4465 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3376 event pairs. 1/502 useless extension candidates. Maximal degree in co-relation 2148. Up to 122 conditions per place. [2020-01-16 21:18:38,222 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 32 selfloop transitions, 38 changer transitions [2020-01-16 21:18:38,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:38,225 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:38,225 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:38,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:38,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:38,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:38,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:38,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:38,229 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:38,229 INFO L174 Difference]: Start difference. First operand has 100 places, 63 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:38,230 INFO L199 Difference]: Finished difference. Result has 110 places, 67 transitions [2020-01-16 21:18:38,230 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1004, PETRI_PLACES=110, PETRI_TRANSITIONS=67} [2020-01-16 21:18:38,230 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 110 places, 67 transitions [2020-01-16 21:18:38,230 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 110 places, 67 transitions [2020-01-16 21:18:38,289 INFO L129 PetriNetUnfolder]: 26/258 cut-off events. [2020-01-16 21:18:38,289 INFO L130 PetriNetUnfolder]: For 3020/3020 co-relation queries the response was YES. [2020-01-16 21:18:38,293 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1136 conditions, 258 events. 26/258 cut-off events. For 3020/3020 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1867 event pairs. 0/238 useless extension candidates. Maximal degree in co-relation 966. Up to 28 conditions per place. [2020-01-16 21:18:38,295 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 110 places, 0 of 67 transitions, 27 of 1004 flow. [2020-01-16 21:18:38,295 INFO L478 AbstractCegarLoop]: Abstraction has has 109 places, 67 transitions [2020-01-16 21:18:38,295 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:38,352 INFO L129 PetriNetUnfolder]: 26/237 cut-off events. [2020-01-16 21:18:38,353 INFO L130 PetriNetUnfolder]: For 3020/3020 co-relation queries the response was YES. [2020-01-16 21:18:38,353 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:38,353 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:38,355 INFO L426 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:38,356 INFO L82 PathProgramCache]: Analyzing trace with hash 888457660, now seen corresponding path program 7 times [2020-01-16 21:18:38,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:38,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327551642] [2020-01-16 21:18:38,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:38,648 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327551642] [2020-01-16 21:18:38,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:38,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:38,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986336287] [2020-01-16 21:18:38,649 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:38,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:38,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:38,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:38,652 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:38,652 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 67 transitions. Second operand 8 states. [2020-01-16 21:18:38,652 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:38,653 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:38,653 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:39,018 INFO L129 PetriNetUnfolder]: 191/653 cut-off events. [2020-01-16 21:18:39,018 INFO L130 PetriNetUnfolder]: For 7617/7647 co-relation queries the response was YES. [2020-01-16 21:18:39,026 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3086 conditions, 653 events. 191/653 cut-off events. For 7617/7647 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4794 event pairs. 1/626 useless extension candidates. Maximal degree in co-relation 2853. Up to 122 conditions per place. [2020-01-16 21:18:39,027 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 35 selfloop transitions, 57 changer transitions [2020-01-16 21:18:39,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:39,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:39,030 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:39,030 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:39,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:39,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:39,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:39,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:39,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:39,034 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:39,034 INFO L174 Difference]: Start difference. First operand has 109 places, 67 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:39,036 INFO L199 Difference]: Finished difference. Result has 121 places, 86 transitions [2020-01-16 21:18:39,037 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1557, PETRI_PLACES=121, PETRI_TRANSITIONS=86} [2020-01-16 21:18:39,037 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 121 places, 86 transitions [2020-01-16 21:18:39,037 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 121 places, 86 transitions [2020-01-16 21:18:39,138 INFO L129 PetriNetUnfolder]: 40/394 cut-off events. [2020-01-16 21:18:39,139 INFO L130 PetriNetUnfolder]: For 6397/6401 co-relation queries the response was YES. [2020-01-16 21:18:39,144 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 394 events. 40/394 cut-off events. For 6397/6401 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3350 event pairs. 0/367 useless extension candidates. Maximal degree in co-relation 1641. Up to 42 conditions per place. [2020-01-16 21:18:39,145 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 121 places, 0 of 86 transitions, 0 of 1557 flow. [2020-01-16 21:18:39,146 INFO L478 AbstractCegarLoop]: Abstraction has has 121 places, 86 transitions [2020-01-16 21:18:39,146 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:39,229 INFO L129 PetriNetUnfolder]: 40/360 cut-off events. [2020-01-16 21:18:39,230 INFO L130 PetriNetUnfolder]: For 6397/6401 co-relation queries the response was YES. [2020-01-16 21:18:39,230 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:39,230 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:39,230 INFO L426 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:39,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:39,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1065119684, now seen corresponding path program 8 times [2020-01-16 21:18:39,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:39,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481513294] [2020-01-16 21:18:39,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:39,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481513294] [2020-01-16 21:18:39,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:39,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:39,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62841859] [2020-01-16 21:18:39,526 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:39,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:39,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:39,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:39,528 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:39,528 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 86 transitions. Second operand 8 states. [2020-01-16 21:18:39,528 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:39,529 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:39,529 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:40,219 INFO L129 PetriNetUnfolder]: 197/697 cut-off events. [2020-01-16 21:18:40,219 INFO L130 PetriNetUnfolder]: For 10715/10745 co-relation queries the response was YES. [2020-01-16 21:18:40,228 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3599 conditions, 697 events. 197/697 cut-off events. For 10715/10745 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5289 event pairs. 1/670 useless extension candidates. Maximal degree in co-relation 3346. Up to 149 conditions per place. [2020-01-16 21:18:40,229 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 43 selfloop transitions, 62 changer transitions [2020-01-16 21:18:40,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:40,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:40,232 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:40,232 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:40,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:40,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:40,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:40,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:40,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:40,236 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:40,236 INFO L174 Difference]: Start difference. First operand has 121 places, 86 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:40,240 INFO L199 Difference]: Finished difference. Result has 134 places, 97 transitions [2020-01-16 21:18:40,241 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2002, PETRI_PLACES=134, PETRI_TRANSITIONS=97} [2020-01-16 21:18:40,241 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 134 places, 97 transitions [2020-01-16 21:18:40,241 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 134 places, 97 transitions [2020-01-16 21:18:40,508 INFO L129 PetriNetUnfolder]: 44/430 cut-off events. [2020-01-16 21:18:40,509 INFO L130 PetriNetUnfolder]: For 9248/9258 co-relation queries the response was YES. [2020-01-16 21:18:40,517 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2275 conditions, 430 events. 44/430 cut-off events. For 9248/9258 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3742 event pairs. 0/399 useless extension candidates. Maximal degree in co-relation 2017. Up to 46 conditions per place. [2020-01-16 21:18:40,520 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 134 places, 0 of 97 transitions, 45 of 2002 flow. [2020-01-16 21:18:40,520 INFO L478 AbstractCegarLoop]: Abstraction has has 133 places, 97 transitions [2020-01-16 21:18:40,521 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:40,700 INFO L129 PetriNetUnfolder]: 44/392 cut-off events. [2020-01-16 21:18:40,700 INFO L130 PetriNetUnfolder]: For 9216/9226 co-relation queries the response was YES. [2020-01-16 21:18:40,701 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:40,701 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:40,701 INFO L426 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:40,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:40,701 INFO L82 PathProgramCache]: Analyzing trace with hash 617574630, now seen corresponding path program 9 times [2020-01-16 21:18:40,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:40,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550568465] [2020-01-16 21:18:40,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:40,957 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550568465] [2020-01-16 21:18:40,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:40,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:40,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671928492] [2020-01-16 21:18:40,958 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:40,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:40,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:40,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:40,959 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:40,960 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 97 transitions. Second operand 8 states. [2020-01-16 21:18:40,960 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:40,960 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:40,960 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:41,438 INFO L129 PetriNetUnfolder]: 197/699 cut-off events. [2020-01-16 21:18:41,438 INFO L130 PetriNetUnfolder]: For 14095/14138 co-relation queries the response was YES. [2020-01-16 21:18:41,448 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3950 conditions, 699 events. 197/699 cut-off events. For 14095/14138 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5322 event pairs. 1/673 useless extension candidates. Maximal degree in co-relation 3681. Up to 149 conditions per place. [2020-01-16 21:18:41,449 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 43 selfloop transitions, 60 changer transitions [2020-01-16 21:18:41,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:41,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:41,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:41,452 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:41,452 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:41,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:41,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:41,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:41,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:41,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:41,456 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:41,456 INFO L174 Difference]: Start difference. First operand has 133 places, 97 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:41,458 INFO L199 Difference]: Finished difference. Result has 145 places, 101 transitions [2020-01-16 21:18:41,458 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2252, PETRI_PLACES=145, PETRI_TRANSITIONS=101} [2020-01-16 21:18:41,459 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 145 places, 101 transitions [2020-01-16 21:18:41,459 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 145 places, 101 transitions [2020-01-16 21:18:41,657 INFO L129 PetriNetUnfolder]: 44/429 cut-off events. [2020-01-16 21:18:41,657 INFO L130 PetriNetUnfolder]: For 11565/11575 co-relation queries the response was YES. [2020-01-16 21:18:41,665 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 429 events. 44/429 cut-off events. For 11565/11575 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3739 event pairs. 0/394 useless extension candidates. Maximal degree in co-relation 2156. Up to 46 conditions per place. [2020-01-16 21:18:41,666 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 145 places, 0 of 101 transitions, 45 of 2252 flow. [2020-01-16 21:18:41,667 INFO L478 AbstractCegarLoop]: Abstraction has has 144 places, 101 transitions [2020-01-16 21:18:41,667 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:41,855 INFO L129 PetriNetUnfolder]: 44/393 cut-off events. [2020-01-16 21:18:41,855 INFO L130 PetriNetUnfolder]: For 11575/11587 co-relation queries the response was YES. [2020-01-16 21:18:41,855 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:41,856 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:41,856 INFO L426 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:41,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:41,857 INFO L82 PathProgramCache]: Analyzing trace with hash 506970474, now seen corresponding path program 10 times [2020-01-16 21:18:41,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:41,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812510795] [2020-01-16 21:18:41,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:42,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812510795] [2020-01-16 21:18:42,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:42,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:42,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856279322] [2020-01-16 21:18:42,126 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:42,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:42,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:42,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:42,128 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:42,129 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 101 transitions. Second operand 8 states. [2020-01-16 21:18:42,129 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:42,129 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:42,129 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:42,719 INFO L129 PetriNetUnfolder]: 197/712 cut-off events. [2020-01-16 21:18:42,719 INFO L130 PetriNetUnfolder]: For 17670/17713 co-relation queries the response was YES. [2020-01-16 21:18:42,733 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4229 conditions, 712 events. 197/712 cut-off events. For 17670/17713 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5471 event pairs. 1/685 useless extension candidates. Maximal degree in co-relation 3951. Up to 149 conditions per place. [2020-01-16 21:18:42,735 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 47 selfloop transitions, 61 changer transitions [2020-01-16 21:18:42,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:42,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:42,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:42,738 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:42,739 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:42,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:42,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:42,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:42,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:42,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:42,744 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:42,744 INFO L174 Difference]: Start difference. First operand has 144 places, 101 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:42,747 INFO L199 Difference]: Finished difference. Result has 155 places, 106 transitions [2020-01-16 21:18:42,748 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2516, PETRI_PLACES=155, PETRI_TRANSITIONS=106} [2020-01-16 21:18:42,749 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 155 places, 106 transitions [2020-01-16 21:18:42,749 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 155 places, 106 transitions [2020-01-16 21:18:42,914 INFO L129 PetriNetUnfolder]: 46/449 cut-off events. [2020-01-16 21:18:42,915 INFO L130 PetriNetUnfolder]: For 14626/14638 co-relation queries the response was YES. [2020-01-16 21:18:42,922 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2625 conditions, 449 events. 46/449 cut-off events. For 14626/14638 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3951 event pairs. 0/414 useless extension candidates. Maximal degree in co-relation 2350. Up to 48 conditions per place. [2020-01-16 21:18:42,942 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 155 places, 0 of 106 transitions, 47 of 2516 flow. [2020-01-16 21:18:42,942 INFO L478 AbstractCegarLoop]: Abstraction has has 154 places, 106 transitions [2020-01-16 21:18:42,942 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:43,070 INFO L129 PetriNetUnfolder]: 46/412 cut-off events. [2020-01-16 21:18:43,071 INFO L130 PetriNetUnfolder]: For 14626/14638 co-relation queries the response was YES. [2020-01-16 21:18:43,071 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:43,071 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:43,071 INFO L426 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:43,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:43,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1633160158, now seen corresponding path program 11 times [2020-01-16 21:18:43,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:43,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230506763] [2020-01-16 21:18:43,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:43,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230506763] [2020-01-16 21:18:43,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:43,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:43,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105584840] [2020-01-16 21:18:43,337 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:43,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:43,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:43,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:43,338 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:43,339 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 106 transitions. Second operand 8 states. [2020-01-16 21:18:43,339 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:43,339 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:43,339 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:43,834 INFO L129 PetriNetUnfolder]: 197/727 cut-off events. [2020-01-16 21:18:43,835 INFO L130 PetriNetUnfolder]: For 21392/21435 co-relation queries the response was YES. [2020-01-16 21:18:43,846 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4464 conditions, 727 events. 197/727 cut-off events. For 21392/21435 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5672 event pairs. 1/700 useless extension candidates. Maximal degree in co-relation 4178. Up to 131 conditions per place. [2020-01-16 21:18:43,847 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 42 selfloop transitions, 73 changer transitions [2020-01-16 21:18:43,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:43,849 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:43,850 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:43,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:43,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:43,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:43,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:43,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:43,853 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:43,853 INFO L174 Difference]: Start difference. First operand has 154 places, 106 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:43,855 INFO L199 Difference]: Finished difference. Result has 164 places, 111 transitions [2020-01-16 21:18:43,855 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2469, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2793, PETRI_PLACES=164, PETRI_TRANSITIONS=111} [2020-01-16 21:18:43,856 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 164 places, 111 transitions [2020-01-16 21:18:43,856 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 164 places, 111 transitions [2020-01-16 21:18:44,016 INFO L129 PetriNetUnfolder]: 48/468 cut-off events. [2020-01-16 21:18:44,016 INFO L130 PetriNetUnfolder]: For 18090/18102 co-relation queries the response was YES. [2020-01-16 21:18:44,022 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2839 conditions, 468 events. 48/468 cut-off events. For 18090/18102 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4184 event pairs. 0/433 useless extension candidates. Maximal degree in co-relation 2556. Up to 50 conditions per place. [2020-01-16 21:18:44,023 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 164 places, 0 of 111 transitions, 49 of 2793 flow. [2020-01-16 21:18:44,024 INFO L478 AbstractCegarLoop]: Abstraction has has 163 places, 111 transitions [2020-01-16 21:18:44,024 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:44,182 INFO L129 PetriNetUnfolder]: 48/430 cut-off events. [2020-01-16 21:18:44,182 INFO L130 PetriNetUnfolder]: For 18090/18102 co-relation queries the response was YES. [2020-01-16 21:18:44,183 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:44,183 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:44,183 INFO L426 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:44,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:44,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1847752708, now seen corresponding path program 12 times [2020-01-16 21:18:44,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:44,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918624554] [2020-01-16 21:18:44,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:44,387 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918624554] [2020-01-16 21:18:44,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:44,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:44,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392364813] [2020-01-16 21:18:44,388 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:44,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:44,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:44,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:44,389 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:44,390 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 111 transitions. Second operand 8 states. [2020-01-16 21:18:44,390 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:44,390 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:44,390 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:45,087 INFO L129 PetriNetUnfolder]: 229/1023 cut-off events. [2020-01-16 21:18:45,088 INFO L130 PetriNetUnfolder]: For 36832/36978 co-relation queries the response was YES. [2020-01-16 21:18:45,097 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6354 conditions, 1023 events. 229/1023 cut-off events. For 36832/36978 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9483 event pairs. 4/999 useless extension candidates. Maximal degree in co-relation 6055. Up to 220 conditions per place. [2020-01-16 21:18:45,098 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 61 selfloop transitions, 99 changer transitions [2020-01-16 21:18:45,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:45,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:45,100 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:45,100 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:45,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:45,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:45,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:45,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:45,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:45,103 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:45,103 INFO L174 Difference]: Start difference. First operand has 163 places, 111 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:45,105 INFO L199 Difference]: Finished difference. Result has 176 places, 144 transitions [2020-01-16 21:18:45,105 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4131, PETRI_PLACES=176, PETRI_TRANSITIONS=144} [2020-01-16 21:18:45,106 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 176 places, 144 transitions [2020-01-16 21:18:45,106 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 176 places, 144 transitions [2020-01-16 21:18:45,352 INFO L129 PetriNetUnfolder]: 74/721 cut-off events. [2020-01-16 21:18:45,353 INFO L130 PetriNetUnfolder]: For 32572/32617 co-relation queries the response was YES. [2020-01-16 21:18:45,360 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4577 conditions, 721 events. 74/721 cut-off events. For 32572/32617 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7266 event pairs. 1/665 useless extension candidates. Maximal degree in co-relation 4266. Up to 76 conditions per place. [2020-01-16 21:18:45,362 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 176 places, 0 of 144 transitions, 0 of 4131 flow. [2020-01-16 21:18:45,362 INFO L478 AbstractCegarLoop]: Abstraction has has 176 places, 144 transitions [2020-01-16 21:18:45,362 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:45,545 INFO L129 PetriNetUnfolder]: 74/658 cut-off events. [2020-01-16 21:18:45,546 INFO L130 PetriNetUnfolder]: For 32460/32486 co-relation queries the response was YES. [2020-01-16 21:18:45,546 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:45,546 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:45,546 INFO L426 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:45,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:45,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1872802496, now seen corresponding path program 13 times [2020-01-16 21:18:45,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:45,547 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102489818] [2020-01-16 21:18:45,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:45,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:45,797 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102489818] [2020-01-16 21:18:45,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:45,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:45,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904297987] [2020-01-16 21:18:45,798 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:45,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:45,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:45,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:45,799 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:45,800 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 144 transitions. Second operand 8 states. [2020-01-16 21:18:45,800 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:45,800 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:45,800 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:46,583 INFO L129 PetriNetUnfolder]: 230/1034 cut-off events. [2020-01-16 21:18:46,583 INFO L130 PetriNetUnfolder]: For 44204/44281 co-relation queries the response was YES. [2020-01-16 21:18:46,594 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7018 conditions, 1034 events. 230/1034 cut-off events. For 44204/44281 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9564 event pairs. 1/1005 useless extension candidates. Maximal degree in co-relation 6657. Up to 169 conditions per place. [2020-01-16 21:18:46,595 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 46 selfloop transitions, 113 changer transitions [2020-01-16 21:18:46,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:46,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:46,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:46,596 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:46,597 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:46,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:46,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:46,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:46,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:46,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:46,600 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:46,600 INFO L174 Difference]: Start difference. First operand has 176 places, 144 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:46,602 INFO L199 Difference]: Finished difference. Result has 187 places, 154 transitions [2020-01-16 21:18:46,602 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=4131, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4834, PETRI_PLACES=187, PETRI_TRANSITIONS=154} [2020-01-16 21:18:46,603 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 187 places, 154 transitions [2020-01-16 21:18:46,603 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 187 places, 154 transitions [2020-01-16 21:18:46,867 INFO L129 PetriNetUnfolder]: 77/752 cut-off events. [2020-01-16 21:18:46,867 INFO L130 PetriNetUnfolder]: For 39837/39859 co-relation queries the response was YES. [2020-01-16 21:18:46,875 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5133 conditions, 752 events. 77/752 cut-off events. For 39837/39859 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7682 event pairs. 0/696 useless extension candidates. Maximal degree in co-relation 4789. Up to 79 conditions per place. [2020-01-16 21:18:46,877 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 187 places, 0 of 154 transitions, 78 of 4834 flow. [2020-01-16 21:18:46,877 INFO L478 AbstractCegarLoop]: Abstraction has has 186 places, 154 transitions [2020-01-16 21:18:46,877 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:47,126 INFO L129 PetriNetUnfolder]: 77/687 cut-off events. [2020-01-16 21:18:47,126 INFO L130 PetriNetUnfolder]: For 39837/39859 co-relation queries the response was YES. [2020-01-16 21:18:47,126 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:47,126 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:47,127 INFO L426 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:47,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:47,127 INFO L82 PathProgramCache]: Analyzing trace with hash -61054746, now seen corresponding path program 14 times [2020-01-16 21:18:47,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:47,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412747827] [2020-01-16 21:18:47,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:47,402 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412747827] [2020-01-16 21:18:47,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:47,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:47,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670536377] [2020-01-16 21:18:47,403 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:47,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:47,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:47,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:47,406 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:47,406 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 154 transitions. Second operand 8 states. [2020-01-16 21:18:47,406 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:47,407 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:47,407 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:48,470 INFO L129 PetriNetUnfolder]: 231/1094 cut-off events. [2020-01-16 21:18:48,471 INFO L130 PetriNetUnfolder]: For 54365/54442 co-relation queries the response was YES. [2020-01-16 21:18:48,879 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7707 conditions, 1094 events. 231/1094 cut-off events. For 54365/54442 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10391 event pairs. 1/1065 useless extension candidates. Maximal degree in co-relation 7353. Up to 205 conditions per place. [2020-01-16 21:18:48,880 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 60 selfloop transitions, 106 changer transitions [2020-01-16 21:18:48,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:48,882 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:48,882 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:48,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:48,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:48,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:48,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:48,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:48,885 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:48,885 INFO L174 Difference]: Start difference. First operand has 186 places, 154 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:48,888 INFO L199 Difference]: Finished difference. Result has 197 places, 166 transitions [2020-01-16 21:18:48,889 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=4756, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5498, PETRI_PLACES=197, PETRI_TRANSITIONS=166} [2020-01-16 21:18:48,889 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 197 places, 166 transitions [2020-01-16 21:18:48,889 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 197 places, 166 transitions [2020-01-16 21:18:49,207 INFO L129 PetriNetUnfolder]: 84/823 cut-off events. [2020-01-16 21:18:49,207 INFO L130 PetriNetUnfolder]: For 50132/50156 co-relation queries the response was YES. [2020-01-16 21:18:49,217 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5813 conditions, 823 events. 84/823 cut-off events. For 50132/50156 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8685 event pairs. 0/769 useless extension candidates. Maximal degree in co-relation 5457. Up to 86 conditions per place. [2020-01-16 21:18:49,219 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 197 places, 0 of 166 transitions, 85 of 5498 flow. [2020-01-16 21:18:49,219 INFO L478 AbstractCegarLoop]: Abstraction has has 196 places, 166 transitions [2020-01-16 21:18:49,219 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:49,469 INFO L129 PetriNetUnfolder]: 84/752 cut-off events. [2020-01-16 21:18:49,469 INFO L130 PetriNetUnfolder]: For 50666/50693 co-relation queries the response was YES. [2020-01-16 21:18:49,469 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:49,469 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:49,469 INFO L426 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:49,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:49,470 INFO L82 PathProgramCache]: Analyzing trace with hash -96978180, now seen corresponding path program 15 times [2020-01-16 21:18:49,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:49,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081392535] [2020-01-16 21:18:49,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:49,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081392535] [2020-01-16 21:18:49,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:49,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:49,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330391001] [2020-01-16 21:18:49,720 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:49,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:49,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:49,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:49,721 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:49,721 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 166 transitions. Second operand 8 states. [2020-01-16 21:18:49,722 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:49,722 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:49,722 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:50,605 INFO L129 PetriNetUnfolder]: 231/1101 cut-off events. [2020-01-16 21:18:50,605 INFO L130 PetriNetUnfolder]: For 62609/62746 co-relation queries the response was YES. [2020-01-16 21:18:50,618 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7998 conditions, 1101 events. 231/1101 cut-off events. For 62609/62746 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10559 event pairs. 3/1076 useless extension candidates. Maximal degree in co-relation 7632. Up to 225 conditions per place. [2020-01-16 21:18:50,619 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 71 selfloop transitions, 113 changer transitions [2020-01-16 21:18:50,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:50,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:50,621 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:50,621 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:50,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:50,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:50,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:50,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:50,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:50,623 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:50,623 INFO L174 Difference]: Start difference. First operand has 196 places, 166 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:50,626 INFO L199 Difference]: Finished difference. Result has 205 places, 167 transitions [2020-01-16 21:18:50,626 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=5413, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5749, PETRI_PLACES=205, PETRI_TRANSITIONS=167} [2020-01-16 21:18:50,627 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 205 places, 167 transitions [2020-01-16 21:18:50,627 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 205 places, 167 transitions [2020-01-16 21:18:51,007 INFO L129 PetriNetUnfolder]: 84/822 cut-off events. [2020-01-16 21:18:51,008 INFO L130 PetriNetUnfolder]: For 57009/57036 co-relation queries the response was YES. [2020-01-16 21:18:51,018 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5962 conditions, 822 events. 84/822 cut-off events. For 57009/57036 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8639 event pairs. 1/771 useless extension candidates. Maximal degree in co-relation 5594. Up to 86 conditions per place. [2020-01-16 21:18:51,020 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 205 places, 0 of 167 transitions, 85 of 5749 flow. [2020-01-16 21:18:51,020 INFO L478 AbstractCegarLoop]: Abstraction has has 204 places, 167 transitions [2020-01-16 21:18:51,020 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:51,294 INFO L129 PetriNetUnfolder]: 84/752 cut-off events. [2020-01-16 21:18:51,294 INFO L130 PetriNetUnfolder]: For 57009/57036 co-relation queries the response was YES. [2020-01-16 21:18:51,294 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:51,294 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:51,294 INFO L426 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:51,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:51,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1383055858, now seen corresponding path program 16 times [2020-01-16 21:18:51,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:51,295 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506188094] [2020-01-16 21:18:51,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:51,618 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506188094] [2020-01-16 21:18:51,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:51,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:51,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415506993] [2020-01-16 21:18:51,620 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:51,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:51,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:51,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:51,621 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:51,622 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 167 transitions. Second operand 8 states. [2020-01-16 21:18:51,622 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:51,622 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:51,622 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:52,890 INFO L129 PetriNetUnfolder]: 260/1238 cut-off events. [2020-01-16 21:18:52,891 INFO L130 PetriNetUnfolder]: For 79392/79610 co-relation queries the response was YES. [2020-01-16 21:18:52,907 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9225 conditions, 1238 events. 260/1238 cut-off events. For 79392/79610 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12140 event pairs. 4/1212 useless extension candidates. Maximal degree in co-relation 8847. Up to 272 conditions per place. [2020-01-16 21:18:52,908 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 70 selfloop transitions, 120 changer transitions [2020-01-16 21:18:52,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:52,909 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:52,909 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:52,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:52,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:52,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:52,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:52,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:52,911 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:52,911 INFO L174 Difference]: Start difference. First operand has 204 places, 167 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:52,913 INFO L199 Difference]: Finished difference. Result has 217 places, 183 transitions [2020-01-16 21:18:52,913 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=5664, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6675, PETRI_PLACES=217, PETRI_TRANSITIONS=183} [2020-01-16 21:18:52,913 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 217 places, 183 transitions [2020-01-16 21:18:52,913 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 217 places, 183 transitions [2020-01-16 21:18:53,447 INFO L129 PetriNetUnfolder]: 95/931 cut-off events. [2020-01-16 21:18:53,447 INFO L130 PetriNetUnfolder]: For 73447/73477 co-relation queries the response was YES. [2020-01-16 21:18:53,458 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7011 conditions, 931 events. 95/931 cut-off events. For 73447/73477 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10023 event pairs. 0/875 useless extension candidates. Maximal degree in co-relation 6624. Up to 97 conditions per place. [2020-01-16 21:18:53,461 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 217 places, 0 of 183 transitions, 0 of 6675 flow. [2020-01-16 21:18:53,461 INFO L478 AbstractCegarLoop]: Abstraction has has 217 places, 183 transitions [2020-01-16 21:18:53,461 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:53,809 INFO L129 PetriNetUnfolder]: 95/851 cut-off events. [2020-01-16 21:18:53,809 INFO L130 PetriNetUnfolder]: For 73201/73229 co-relation queries the response was YES. [2020-01-16 21:18:53,809 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:53,809 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:53,809 INFO L426 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:53,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:53,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1055134370, now seen corresponding path program 17 times [2020-01-16 21:18:53,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:53,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789434300] [2020-01-16 21:18:53,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:54,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789434300] [2020-01-16 21:18:54,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:54,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:54,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909820453] [2020-01-16 21:18:54,038 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:54,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:54,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:54,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:54,039 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:54,039 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 183 transitions. Second operand 8 states. [2020-01-16 21:18:54,039 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:54,039 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:54,039 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:55,400 INFO L129 PetriNetUnfolder]: 260/1257 cut-off events. [2020-01-16 21:18:55,401 INFO L130 PetriNetUnfolder]: For 91831/92021 co-relation queries the response was YES. [2020-01-16 21:18:55,415 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10002 conditions, 1257 events. 260/1257 cut-off events. For 91831/92021 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12440 event pairs. 9/1237 useless extension candidates. Maximal degree in co-relation 9600. Up to 250 conditions per place. [2020-01-16 21:18:55,416 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 80 selfloop transitions, 130 changer transitions [2020-01-16 21:18:55,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:55,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:55,417 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:55,418 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:55,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:55,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:55,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:55,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:55,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:55,420 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:55,420 INFO L174 Difference]: Start difference. First operand has 217 places, 183 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:55,423 INFO L199 Difference]: Finished difference. Result has 229 places, 192 transitions [2020-01-16 21:18:55,424 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=6675, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7411, PETRI_PLACES=229, PETRI_TRANSITIONS=192} [2020-01-16 21:18:55,424 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 229 places, 192 transitions [2020-01-16 21:18:55,424 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 229 places, 192 transitions [2020-01-16 21:18:55,964 INFO L129 PetriNetUnfolder]: 97/950 cut-off events. [2020-01-16 21:18:55,964 INFO L130 PetriNetUnfolder]: For 84303/84335 co-relation queries the response was YES. [2020-01-16 21:18:55,977 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7504 conditions, 950 events. 97/950 cut-off events. For 84303/84335 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10332 event pairs. 0/894 useless extension candidates. Maximal degree in co-relation 7095. Up to 99 conditions per place. [2020-01-16 21:18:55,979 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 229 places, 0 of 192 transitions, 0 of 7411 flow. [2020-01-16 21:18:55,979 INFO L478 AbstractCegarLoop]: Abstraction has has 229 places, 192 transitions [2020-01-16 21:18:55,979 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:56,359 INFO L129 PetriNetUnfolder]: 97/869 cut-off events. [2020-01-16 21:18:56,359 INFO L130 PetriNetUnfolder]: For 84141/84171 co-relation queries the response was YES. [2020-01-16 21:18:56,359 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:56,359 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:56,359 INFO L426 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:56,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:56,359 INFO L82 PathProgramCache]: Analyzing trace with hash -2020527390, now seen corresponding path program 18 times [2020-01-16 21:18:56,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:56,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571614098] [2020-01-16 21:18:56,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:56,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571614098] [2020-01-16 21:18:56,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:56,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:56,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88317784] [2020-01-16 21:18:56,581 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:56,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:56,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:56,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:56,582 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:56,582 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 192 transitions. Second operand 8 states. [2020-01-16 21:18:56,583 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:56,583 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:56,583 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:58,139 INFO L129 PetriNetUnfolder]: 268/1398 cut-off events. [2020-01-16 21:18:58,139 INFO L130 PetriNetUnfolder]: For 115637/115735 co-relation queries the response was YES. [2020-01-16 21:18:58,159 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11657 conditions, 1398 events. 268/1398 cut-off events. For 115637/115735 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 14441 event pairs. 1/1367 useless extension candidates. Maximal degree in co-relation 11233. Up to 263 conditions per place. [2020-01-16 21:18:58,161 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 74 selfloop transitions, 141 changer transitions [2020-01-16 21:18:58,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:18:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:18:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:18:58,164 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:18:58,164 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:18:58,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:18:58,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:58,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:18:58,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:18:58,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:18:58,166 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:18:58,166 INFO L174 Difference]: Start difference. First operand has 229 places, 192 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:18:58,170 INFO L199 Difference]: Finished difference. Result has 241 places, 213 transitions [2020-01-16 21:18:58,171 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=7411, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8880, PETRI_PLACES=241, PETRI_TRANSITIONS=213} [2020-01-16 21:18:58,171 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 241 places, 213 transitions [2020-01-16 21:18:58,171 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 241 places, 213 transitions [2020-01-16 21:18:59,021 INFO L129 PetriNetUnfolder]: 111/1094 cut-off events. [2020-01-16 21:18:59,021 INFO L130 PetriNetUnfolder]: For 108852/108895 co-relation queries the response was YES. [2020-01-16 21:18:59,040 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9074 conditions, 1094 events. 111/1094 cut-off events. For 108852/108895 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12237 event pairs. 0/1035 useless extension candidates. Maximal degree in co-relation 8642. Up to 113 conditions per place. [2020-01-16 21:18:59,043 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 241 places, 0 of 213 transitions, 0 of 8880 flow. [2020-01-16 21:18:59,044 INFO L478 AbstractCegarLoop]: Abstraction has has 241 places, 213 transitions [2020-01-16 21:18:59,044 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:18:59,578 INFO L129 PetriNetUnfolder]: 111/1000 cut-off events. [2020-01-16 21:18:59,578 INFO L130 PetriNetUnfolder]: For 109443/109501 co-relation queries the response was YES. [2020-01-16 21:18:59,578 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:59,579 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:59,579 INFO L426 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:18:59,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:59,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1911048678, now seen corresponding path program 19 times [2020-01-16 21:18:59,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:59,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309993605] [2020-01-16 21:18:59,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:59,789 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309993605] [2020-01-16 21:18:59,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:59,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:18:59,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607492917] [2020-01-16 21:18:59,790 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:18:59,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:59,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:18:59,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:18:59,791 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:18:59,791 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 213 transitions. Second operand 8 states. [2020-01-16 21:18:59,792 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:59,792 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:18:59,792 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:01,990 INFO L129 PetriNetUnfolder]: 303/1793 cut-off events. [2020-01-16 21:19:01,990 INFO L130 PetriNetUnfolder]: For 172880/172978 co-relation queries the response was YES. [2020-01-16 21:19:02,014 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15573 conditions, 1793 events. 303/1793 cut-off events. For 172880/172978 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 20213 event pairs. 1/1760 useless extension candidates. Maximal degree in co-relation 15126. Up to 302 conditions per place. [2020-01-16 21:19:02,016 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 90 selfloop transitions, 206 changer transitions [2020-01-16 21:19:02,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:19:02,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:19:02,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:19:02,017 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:19:02,017 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:19:02,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:19:02,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:02,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:19:02,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:19:02,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:19:02,019 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:19:02,019 INFO L174 Difference]: Start difference. First operand has 241 places, 213 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:19:02,024 INFO L199 Difference]: Finished difference. Result has 254 places, 270 transitions [2020-01-16 21:19:02,025 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=8880, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12464, PETRI_PLACES=254, PETRI_TRANSITIONS=270} [2020-01-16 21:19:02,025 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 254 places, 270 transitions [2020-01-16 21:19:02,025 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 254 places, 270 transitions [2020-01-16 21:19:03,646 INFO L129 PetriNetUnfolder]: 153/1504 cut-off events. [2020-01-16 21:19:03,646 INFO L130 PetriNetUnfolder]: For 169327/169375 co-relation queries the response was YES. [2020-01-16 21:19:03,669 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13273 conditions, 1504 events. 153/1504 cut-off events. For 169327/169375 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 18224 event pairs. 0/1418 useless extension candidates. Maximal degree in co-relation 12809. Up to 155 conditions per place. [2020-01-16 21:19:03,672 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 254 places, 0 of 270 transitions, 0 of 12464 flow. [2020-01-16 21:19:03,673 INFO L478 AbstractCegarLoop]: Abstraction has has 254 places, 270 transitions [2020-01-16 21:19:03,673 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:19:04,726 INFO L129 PetriNetUnfolder]: 153/1369 cut-off events. [2020-01-16 21:19:04,726 INFO L130 PetriNetUnfolder]: For 168978/169011 co-relation queries the response was YES. [2020-01-16 21:19:04,726 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:04,726 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:04,726 INFO L426 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:19:04,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:04,727 INFO L82 PathProgramCache]: Analyzing trace with hash 267328136, now seen corresponding path program 20 times [2020-01-16 21:19:04,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:04,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333224828] [2020-01-16 21:19:04,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:04,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333224828] [2020-01-16 21:19:04,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:04,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:19:04,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732625232] [2020-01-16 21:19:04,972 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:19:04,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:04,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:19:04,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:19:04,973 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:19:04,974 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 270 transitions. Second operand 8 states. [2020-01-16 21:19:04,974 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:04,974 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:19:04,974 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:07,475 INFO L129 PetriNetUnfolder]: 303/1823 cut-off events. [2020-01-16 21:19:07,476 INFO L130 PetriNetUnfolder]: For 195251/195387 co-relation queries the response was YES. [2020-01-16 21:19:07,501 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16704 conditions, 1823 events. 303/1823 cut-off events. For 195251/195387 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 20682 event pairs. 1/1790 useless extension candidates. Maximal degree in co-relation 16225. Up to 333 conditions per place. [2020-01-16 21:19:07,503 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 83 selfloop transitions, 191 changer transitions [2020-01-16 21:19:07,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:19:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:19:07,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:19:07,504 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:19:07,505 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:19:07,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:19:07,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:07,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:19:07,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:19:07,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:19:07,506 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:19:07,506 INFO L174 Difference]: Start difference. First operand has 254 places, 270 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:19:07,510 INFO L199 Difference]: Finished difference. Result has 264 places, 276 transitions [2020-01-16 21:19:07,510 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=12464, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13295, PETRI_PLACES=264, PETRI_TRANSITIONS=276} [2020-01-16 21:19:07,510 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 264 places, 276 transitions [2020-01-16 21:19:07,510 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 264 places, 276 transitions [2020-01-16 21:19:09,306 INFO L129 PetriNetUnfolder]: 155/1523 cut-off events. [2020-01-16 21:19:09,307 INFO L130 PetriNetUnfolder]: For 188115/188147 co-relation queries the response was YES. [2020-01-16 21:19:09,331 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13907 conditions, 1523 events. 155/1523 cut-off events. For 188115/188147 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 18405 event pairs. 0/1437 useless extension candidates. Maximal degree in co-relation 13427. Up to 157 conditions per place. [2020-01-16 21:19:09,336 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 264 places, 0 of 276 transitions, 156 of 13295 flow. [2020-01-16 21:19:09,336 INFO L478 AbstractCegarLoop]: Abstraction has has 263 places, 276 transitions [2020-01-16 21:19:09,336 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:19:10,712 INFO L129 PetriNetUnfolder]: 155/1387 cut-off events. [2020-01-16 21:19:10,712 INFO L130 PetriNetUnfolder]: For 188115/188147 co-relation queries the response was YES. [2020-01-16 21:19:10,712 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:10,712 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:10,712 INFO L426 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:19:10,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:10,713 INFO L82 PathProgramCache]: Analyzing trace with hash 671115662, now seen corresponding path program 21 times [2020-01-16 21:19:10,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:10,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372343152] [2020-01-16 21:19:10,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:10,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:10,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372343152] [2020-01-16 21:19:10,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:10,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:19:10,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516652987] [2020-01-16 21:19:10,969 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:19:10,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:10,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:19:10,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:19:10,970 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:19:10,971 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 276 transitions. Second operand 8 states. [2020-01-16 21:19:10,972 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:10,972 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:19:10,972 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:13,976 INFO L129 PetriNetUnfolder]: 303/1820 cut-off events. [2020-01-16 21:19:13,976 INFO L130 PetriNetUnfolder]: For 213317/213453 co-relation queries the response was YES. [2020-01-16 21:19:14,000 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17025 conditions, 1820 events. 303/1820 cut-off events. For 213317/213453 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 20641 event pairs. 1/1787 useless extension candidates. Maximal degree in co-relation 16535. Up to 294 conditions per place. [2020-01-16 21:19:14,003 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 79 selfloop transitions, 209 changer transitions [2020-01-16 21:19:14,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:19:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:19:14,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:19:14,004 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:19:14,004 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:19:14,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:19:14,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:14,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:19:14,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:19:14,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:19:14,005 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:19:14,005 INFO L174 Difference]: Start difference. First operand has 263 places, 276 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:19:14,010 INFO L199 Difference]: Finished difference. Result has 273 places, 280 transitions [2020-01-16 21:19:14,011 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=13139, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13910, PETRI_PLACES=273, PETRI_TRANSITIONS=280} [2020-01-16 21:19:14,011 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 273 places, 280 transitions [2020-01-16 21:19:14,011 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 273 places, 280 transitions [2020-01-16 21:19:15,946 INFO L129 PetriNetUnfolder]: 155/1522 cut-off events. [2020-01-16 21:19:15,946 INFO L130 PetriNetUnfolder]: For 206287/206322 co-relation queries the response was YES. [2020-01-16 21:19:15,971 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14288 conditions, 1522 events. 155/1522 cut-off events. For 206287/206322 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 18415 event pairs. 0/1435 useless extension candidates. Maximal degree in co-relation 13795. Up to 157 conditions per place. [2020-01-16 21:19:15,975 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 273 places, 0 of 280 transitions, 156 of 13910 flow. [2020-01-16 21:19:15,975 INFO L478 AbstractCegarLoop]: Abstraction has has 272 places, 280 transitions [2020-01-16 21:19:15,975 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:19:17,197 INFO L129 PetriNetUnfolder]: 155/1387 cut-off events. [2020-01-16 21:19:17,198 INFO L130 PetriNetUnfolder]: For 206160/206192 co-relation queries the response was YES. [2020-01-16 21:19:17,198 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:17,198 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:17,198 INFO L426 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:19:17,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:17,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1718953762, now seen corresponding path program 22 times [2020-01-16 21:19:17,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:17,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581060941] [2020-01-16 21:19:17,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:17,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581060941] [2020-01-16 21:19:17,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:17,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:19:17,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155796888] [2020-01-16 21:19:17,422 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:19:17,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:17,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:19:17,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:19:17,423 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:19:17,424 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 280 transitions. Second operand 8 states. [2020-01-16 21:19:17,424 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:17,424 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:19:17,424 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:21,821 INFO L129 PetriNetUnfolder]: 336/2157 cut-off events. [2020-01-16 21:19:21,821 INFO L130 PetriNetUnfolder]: For 282904/283040 co-relation queries the response was YES. [2020-01-16 21:19:21,852 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20748 conditions, 2157 events. 336/2157 cut-off events. For 282904/283040 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 25790 event pairs. 1/2124 useless extension candidates. Maximal degree in co-relation 20175. Up to 390 conditions per place. [2020-01-16 21:19:21,855 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 112 selfloop transitions, 244 changer transitions [2020-01-16 21:19:21,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:19:21,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:19:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:19:21,856 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:19:21,856 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:19:21,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:19:21,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:21,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:19:21,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:19:21,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:19:21,857 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:19:21,857 INFO L174 Difference]: Start difference. First operand has 272 places, 280 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:19:21,863 INFO L199 Difference]: Finished difference. Result has 285 places, 331 transitions [2020-01-16 21:19:21,863 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=13754, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17515, PETRI_PLACES=285, PETRI_TRANSITIONS=331} [2020-01-16 21:19:21,863 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 285 places, 331 transitions [2020-01-16 21:19:21,863 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 285 places, 331 transitions [2020-01-16 21:19:24,750 INFO L129 PetriNetUnfolder]: 188/1849 cut-off events. [2020-01-16 21:19:24,750 INFO L130 PetriNetUnfolder]: For 283091/283155 co-relation queries the response was YES. [2020-01-16 21:19:24,783 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18181 conditions, 1849 events. 188/1849 cut-off events. For 283091/283155 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 23351 event pairs. 1/1757 useless extension candidates. Maximal degree in co-relation 17602. Up to 190 conditions per place. [2020-01-16 21:19:24,787 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 285 places, 0 of 331 transitions, 189 of 17515 flow. [2020-01-16 21:19:24,788 INFO L478 AbstractCegarLoop]: Abstraction has has 284 places, 331 transitions [2020-01-16 21:19:24,788 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:19:26,601 INFO L129 PetriNetUnfolder]: 188/1682 cut-off events. [2020-01-16 21:19:26,601 INFO L130 PetriNetUnfolder]: For 283257/283326 co-relation queries the response was YES. [2020-01-16 21:19:26,602 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:26,602 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:26,602 INFO L426 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:19:26,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:26,602 INFO L82 PathProgramCache]: Analyzing trace with hash 2084200282, now seen corresponding path program 23 times [2020-01-16 21:19:26,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:26,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685340570] [2020-01-16 21:19:26,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:26,867 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685340570] [2020-01-16 21:19:26,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:26,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:19:26,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927702605] [2020-01-16 21:19:26,868 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:19:26,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:26,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:19:26,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:19:26,869 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:19:26,869 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 331 transitions. Second operand 8 states. [2020-01-16 21:19:26,869 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:26,870 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:19:26,870 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:33,765 INFO L129 PetriNetUnfolder]: 385/2813 cut-off events. [2020-01-16 21:19:33,765 INFO L130 PetriNetUnfolder]: For 406237/406430 co-relation queries the response was YES. [2020-01-16 21:19:33,808 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27534 conditions, 2813 events. 385/2813 cut-off events. For 406237/406430 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 36548 event pairs. 3/2791 useless extension candidates. Maximal degree in co-relation 26923. Up to 670 conditions per place. [2020-01-16 21:19:33,812 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 182 selfloop transitions, 297 changer transitions [2020-01-16 21:19:33,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:19:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:19:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:19:33,814 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:19:33,814 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:19:33,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:19:33,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:33,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:19:33,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:19:33,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:19:33,816 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:19:33,816 INFO L174 Difference]: Start difference. First operand has 284 places, 331 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:19:33,824 INFO L199 Difference]: Finished difference. Result has 297 places, 413 transitions [2020-01-16 21:19:33,824 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=17326, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23320, PETRI_PLACES=297, PETRI_TRANSITIONS=413} [2020-01-16 21:19:33,825 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 297 places, 413 transitions [2020-01-16 21:19:33,825 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 297 places, 413 transitions [2020-01-16 21:19:38,923 INFO L129 PetriNetUnfolder]: 248/2442 cut-off events. [2020-01-16 21:19:38,924 INFO L130 PetriNetUnfolder]: For 415567/415713 co-relation queries the response was YES. [2020-01-16 21:19:38,971 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24912 conditions, 2442 events. 248/2442 cut-off events. For 415567/415713 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 32580 event pairs. 7/2367 useless extension candidates. Maximal degree in co-relation 24329. Up to 250 conditions per place. [2020-01-16 21:19:38,977 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 297 places, 0 of 413 transitions, 249 of 23320 flow. [2020-01-16 21:19:38,977 INFO L478 AbstractCegarLoop]: Abstraction has has 296 places, 413 transitions [2020-01-16 21:19:38,977 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:19:42,128 INFO L129 PetriNetUnfolder]: 248/2216 cut-off events. [2020-01-16 21:19:42,128 INFO L130 PetriNetUnfolder]: For 416874/417092 co-relation queries the response was YES. [2020-01-16 21:19:42,128 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:42,128 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:42,128 INFO L426 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:19:42,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:42,129 INFO L82 PathProgramCache]: Analyzing trace with hash -805757244, now seen corresponding path program 24 times [2020-01-16 21:19:42,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:42,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430609561] [2020-01-16 21:19:42,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:42,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430609561] [2020-01-16 21:19:42,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:42,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:19:42,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208634484] [2020-01-16 21:19:42,355 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:19:42,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:42,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:19:42,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:19:42,356 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:19:42,357 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 413 transitions. Second operand 8 states. [2020-01-16 21:19:42,357 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:42,357 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:19:42,357 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:49,685 INFO L129 PetriNetUnfolder]: 385/2761 cut-off events. [2020-01-16 21:19:49,686 INFO L130 PetriNetUnfolder]: For 442620/443037 co-relation queries the response was YES. [2020-01-16 21:19:49,729 INFO L76 FinitePrefix]: Finished finitePrefix Result has 28406 conditions, 2761 events. 385/2761 cut-off events. For 442620/443037 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 35299 event pairs. 2/2728 useless extension candidates. Maximal degree in co-relation 27810. Up to 447 conditions per place. [2020-01-16 21:19:49,733 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 98 selfloop transitions, 312 changer transitions [2020-01-16 21:19:49,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:19:49,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:19:49,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:19:49,734 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:19:49,734 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:19:49,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:19:49,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:49,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:19:49,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:19:49,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:19:49,736 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:19:49,736 INFO L174 Difference]: Start difference. First operand has 296 places, 413 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:19:49,743 INFO L199 Difference]: Finished difference. Result has 305 places, 414 transitions [2020-01-16 21:19:49,743 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=23071, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=24023, PETRI_PLACES=305, PETRI_TRANSITIONS=414} [2020-01-16 21:19:49,744 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 305 places, 414 transitions [2020-01-16 21:19:49,744 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 305 places, 414 transitions [2020-01-16 21:19:55,673 INFO L129 PetriNetUnfolder]: 248/2441 cut-off events. [2020-01-16 21:19:55,674 INFO L130 PetriNetUnfolder]: For 450719/450937 co-relation queries the response was YES. [2020-01-16 21:19:55,713 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25419 conditions, 2441 events. 248/2441 cut-off events. For 450719/450937 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 32473 event pairs. 5/2357 useless extension candidates. Maximal degree in co-relation 24826. Up to 250 conditions per place. [2020-01-16 21:19:55,719 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 305 places, 0 of 414 transitions, 249 of 24023 flow. [2020-01-16 21:19:55,720 INFO L478 AbstractCegarLoop]: Abstraction has has 304 places, 414 transitions [2020-01-16 21:19:55,720 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:19:58,981 INFO L129 PetriNetUnfolder]: 248/2216 cut-off events. [2020-01-16 21:19:58,981 INFO L130 PetriNetUnfolder]: For 450719/450937 co-relation queries the response was YES. [2020-01-16 21:19:58,981 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:58,981 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:58,982 INFO L426 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:19:58,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:58,982 INFO L82 PathProgramCache]: Analyzing trace with hash 309086400, now seen corresponding path program 25 times [2020-01-16 21:19:58,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:58,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109791395] [2020-01-16 21:19:58,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:59,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109791395] [2020-01-16 21:19:59,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:59,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:19:59,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013716701] [2020-01-16 21:19:59,193 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:19:59,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:59,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:19:59,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:19:59,194 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:19:59,195 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 414 transitions. Second operand 8 states. [2020-01-16 21:19:59,195 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:59,195 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:19:59,195 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:06,750 INFO L129 PetriNetUnfolder]: 385/2750 cut-off events. [2020-01-16 21:20:06,750 INFO L130 PetriNetUnfolder]: For 475744/476145 co-relation queries the response was YES. [2020-01-16 21:20:06,797 INFO L76 FinitePrefix]: Finished finitePrefix Result has 28891 conditions, 2750 events. 385/2750 cut-off events. For 475744/476145 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 35173 event pairs. 6/2730 useless extension candidates. Maximal degree in co-relation 28285. Up to 617 conditions per place. [2020-01-16 21:20:06,802 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 162 selfloop transitions, 313 changer transitions [2020-01-16 21:20:06,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:20:06,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:20:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:20:06,803 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:20:06,803 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:20:06,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:20:06,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:06,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:20:06,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:20:06,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:20:06,805 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:20:06,805 INFO L174 Difference]: Start difference. First operand has 304 places, 414 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:20:06,814 INFO L199 Difference]: Finished difference. Result has 317 places, 432 transitions [2020-01-16 21:20:06,815 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=23774, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25880, PETRI_PLACES=317, PETRI_TRANSITIONS=432} [2020-01-16 21:20:06,815 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 317 places, 432 transitions [2020-01-16 21:20:06,815 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 317 places, 432 transitions [2020-01-16 21:20:12,951 INFO L129 PetriNetUnfolder]: 248/2440 cut-off events. [2020-01-16 21:20:12,951 INFO L130 PetriNetUnfolder]: For 494050/494340 co-relation queries the response was YES. [2020-01-16 21:20:12,992 INFO L76 FinitePrefix]: Finished finitePrefix Result has 26269 conditions, 2440 events. 248/2440 cut-off events. For 494050/494340 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 32439 event pairs. 5/2359 useless extension candidates. Maximal degree in co-relation 25659. Up to 250 conditions per place. [2020-01-16 21:20:12,998 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 317 places, 0 of 432 transitions, 249 of 25880 flow. [2020-01-16 21:20:12,998 INFO L478 AbstractCegarLoop]: Abstraction has has 316 places, 432 transitions [2020-01-16 21:20:12,999 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:20:16,434 INFO L129 PetriNetUnfolder]: 248/2216 cut-off events. [2020-01-16 21:20:16,435 INFO L130 PetriNetUnfolder]: For 495662/495937 co-relation queries the response was YES. [2020-01-16 21:20:16,435 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:16,435 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:16,435 INFO L426 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:20:16,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:16,435 INFO L82 PathProgramCache]: Analyzing trace with hash 739749960, now seen corresponding path program 26 times [2020-01-16 21:20:16,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:16,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924333765] [2020-01-16 21:20:16,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:20:16,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924333765] [2020-01-16 21:20:16,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:16,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:20:16,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992708393] [2020-01-16 21:20:16,721 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:20:16,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:16,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:20:16,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:20:16,722 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:20:16,723 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 432 transitions. Second operand 8 states. [2020-01-16 21:20:16,723 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:16,723 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:20:16,724 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:24,662 INFO L129 PetriNetUnfolder]: 386/2784 cut-off events. [2020-01-16 21:20:24,663 INFO L130 PetriNetUnfolder]: For 531392/532098 co-relation queries the response was YES. [2020-01-16 21:20:24,713 INFO L76 FinitePrefix]: Finished finitePrefix Result has 30235 conditions, 2784 events. 386/2784 cut-off events. For 531392/532098 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 35718 event pairs. 3/2754 useless extension candidates. Maximal degree in co-relation 29612. Up to 573 conditions per place. [2020-01-16 21:20:24,718 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 155 selfloop transitions, 332 changer transitions [2020-01-16 21:20:24,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:20:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:20:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:20:24,719 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:20:24,719 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:20:24,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:20:24,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:24,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:20:24,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:20:24,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:20:24,720 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:20:24,720 INFO L174 Difference]: Start difference. First operand has 316 places, 432 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:20:24,729 INFO L199 Difference]: Finished difference. Result has 329 places, 459 transitions [2020-01-16 21:20:24,729 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=25631, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=28178, PETRI_PLACES=329, PETRI_TRANSITIONS=459} [2020-01-16 21:20:24,729 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 329 places, 459 transitions [2020-01-16 21:20:24,729 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 329 places, 459 transitions [2020-01-16 21:20:30,607 INFO L129 PetriNetUnfolder]: 254/2498 cut-off events. [2020-01-16 21:20:30,607 INFO L130 PetriNetUnfolder]: For 549425/549702 co-relation queries the response was YES. [2020-01-16 21:20:30,653 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27798 conditions, 2498 events. 254/2498 cut-off events. For 549425/549702 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 33426 event pairs. 9/2413 useless extension candidates. Maximal degree in co-relation 27168. Up to 258 conditions per place. [2020-01-16 21:20:30,661 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 329 places, 0 of 459 transitions, 255 of 28178 flow. [2020-01-16 21:20:30,661 INFO L478 AbstractCegarLoop]: Abstraction has has 328 places, 459 transitions [2020-01-16 21:20:30,661 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:20:34,195 INFO L129 PetriNetUnfolder]: 254/2269 cut-off events. [2020-01-16 21:20:34,195 INFO L130 PetriNetUnfolder]: For 547641/547899 co-relation queries the response was YES. [2020-01-16 21:20:34,195 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:34,195 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:34,195 INFO L426 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:20:34,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:34,196 INFO L82 PathProgramCache]: Analyzing trace with hash -684573604, now seen corresponding path program 27 times [2020-01-16 21:20:34,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:34,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728607976] [2020-01-16 21:20:34,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:20:34,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728607976] [2020-01-16 21:20:34,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:34,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:20:34,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580083707] [2020-01-16 21:20:34,423 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:20:34,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:34,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:20:34,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:20:34,424 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:20:34,424 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 459 transitions. Second operand 8 states. [2020-01-16 21:20:34,424 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:34,424 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:20:34,424 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:41,860 INFO L129 PetriNetUnfolder]: 386/2852 cut-off events. [2020-01-16 21:20:41,860 INFO L130 PetriNetUnfolder]: For 577209/577917 co-relation queries the response was YES. [2020-01-16 21:20:41,916 INFO L76 FinitePrefix]: Finished finitePrefix Result has 31554 conditions, 2852 events. 386/2852 cut-off events. For 577209/577917 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 37108 event pairs. 14/2842 useless extension candidates. Maximal degree in co-relation 30911. Up to 675 conditions per place. [2020-01-16 21:20:41,921 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 220 selfloop transitions, 329 changer transitions [2020-01-16 21:20:41,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:20:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:20:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:20:41,923 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:20:41,923 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:20:41,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:20:41,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:41,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:20:41,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:20:41,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:20:41,925 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:20:41,925 INFO L174 Difference]: Start difference. First operand has 328 places, 459 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:20:41,933 INFO L199 Difference]: Finished difference. Result has 339 places, 481 transitions [2020-01-16 21:20:41,934 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=27923, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30207, PETRI_PLACES=339, PETRI_TRANSITIONS=481} [2020-01-16 21:20:41,934 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 339 places, 481 transitions [2020-01-16 21:20:41,934 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 339 places, 481 transitions [2020-01-16 21:20:48,857 INFO L129 PetriNetUnfolder]: 254/2497 cut-off events. [2020-01-16 21:20:48,857 INFO L130 PetriNetUnfolder]: For 587909/588167 co-relation queries the response was YES. [2020-01-16 21:20:48,905 INFO L76 FinitePrefix]: Finished finitePrefix Result has 28420 conditions, 2497 events. 254/2497 cut-off events. For 587909/588167 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 33412 event pairs. 12/2412 useless extension candidates. Maximal degree in co-relation 27773. Up to 258 conditions per place. [2020-01-16 21:20:48,915 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 339 places, 0 of 481 transitions, 255 of 30207 flow. [2020-01-16 21:20:48,915 INFO L478 AbstractCegarLoop]: Abstraction has has 338 places, 481 transitions [2020-01-16 21:20:48,915 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:20:52,822 INFO L129 PetriNetUnfolder]: 254/2269 cut-off events. [2020-01-16 21:20:52,822 INFO L130 PetriNetUnfolder]: For 591453/591755 co-relation queries the response was YES. [2020-01-16 21:20:52,822 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:52,822 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:52,822 INFO L426 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:20:52,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:52,823 INFO L82 PathProgramCache]: Analyzing trace with hash -219172710, now seen corresponding path program 28 times [2020-01-16 21:20:52,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:52,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411025895] [2020-01-16 21:20:52,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:20:53,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411025895] [2020-01-16 21:20:53,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:53,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:20:53,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266849304] [2020-01-16 21:20:53,062 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:20:53,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:53,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:20:53,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:20:53,063 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:20:53,064 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 481 transitions. Second operand 8 states. [2020-01-16 21:20:53,064 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:53,064 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:20:53,064 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:21:02,918 INFO L129 PetriNetUnfolder]: 395/3012 cut-off events. [2020-01-16 21:21:02,918 INFO L130 PetriNetUnfolder]: For 675540/676394 co-relation queries the response was YES. [2020-01-16 21:21:02,979 INFO L76 FinitePrefix]: Finished finitePrefix Result has 34550 conditions, 3012 events. 395/3012 cut-off events. For 675540/676394 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 39878 event pairs. 25/3008 useless extension candidates. Maximal degree in co-relation 33890. Up to 516 conditions per place. [2020-01-16 21:21:02,985 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 126 selfloop transitions, 417 changer transitions [2020-01-16 21:21:02,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:21:02,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:21:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:21:02,986 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:21:02,986 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:21:02,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:21:02,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:21:02,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:21:02,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:21:02,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:21:02,987 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:21:02,987 INFO L174 Difference]: Start difference. First operand has 338 places, 481 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:21:02,997 INFO L199 Difference]: Finished difference. Result has 350 places, 528 transitions [2020-01-16 21:21:02,998 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=29952, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=34224, PETRI_PLACES=350, PETRI_TRANSITIONS=528} [2020-01-16 21:21:02,998 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 350 places, 528 transitions [2020-01-16 21:21:02,998 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 350 places, 528 transitions [2020-01-16 21:21:10,180 INFO L129 PetriNetUnfolder]: 280/2750 cut-off events. [2020-01-16 21:21:10,180 INFO L130 PetriNetUnfolder]: For 691936/692199 co-relation queries the response was YES. [2020-01-16 21:21:10,230 INFO L76 FinitePrefix]: Finished finitePrefix Result has 32064 conditions, 2750 events. 280/2750 cut-off events. For 691936/692199 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 37559 event pairs. 14/2661 useless extension candidates. Maximal degree in co-relation 31407. Up to 282 conditions per place. [2020-01-16 21:21:10,238 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 350 places, 0 of 528 transitions, 0 of 34224 flow. [2020-01-16 21:21:10,239 INFO L478 AbstractCegarLoop]: Abstraction has has 350 places, 528 transitions [2020-01-16 21:21:10,239 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:21:14,906 INFO L129 PetriNetUnfolder]: 280/2497 cut-off events. [2020-01-16 21:21:14,906 INFO L130 PetriNetUnfolder]: For 690091/690287 co-relation queries the response was YES. [2020-01-16 21:21:14,906 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:21:14,906 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:21:14,906 INFO L426 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:21:14,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:21:14,906 INFO L82 PathProgramCache]: Analyzing trace with hash -320417186, now seen corresponding path program 29 times [2020-01-16 21:21:14,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:21:14,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394480619] [2020-01-16 21:21:14,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:21:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:21:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:21:15,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394480619] [2020-01-16 21:21:15,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:21:15,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:21:15,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105410673] [2020-01-16 21:21:15,144 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:21:15,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:21:15,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:21:15,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:21:15,144 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:21:15,145 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 528 transitions. Second operand 8 states. [2020-01-16 21:21:15,145 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:21:15,145 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:21:15,145 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:21:24,776 INFO L129 PetriNetUnfolder]: 395/3022 cut-off events. [2020-01-16 21:21:24,776 INFO L130 PetriNetUnfolder]: For 725671/726428 co-relation queries the response was YES. [2020-01-16 21:21:24,833 INFO L76 FinitePrefix]: Finished finitePrefix Result has 35971 conditions, 3022 events. 395/3022 cut-off events. For 725671/726428 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 39983 event pairs. 3/2994 useless extension candidates. Maximal degree in co-relation 35295. Up to 500 conditions per place. [2020-01-16 21:21:24,839 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 143 selfloop transitions, 396 changer transitions [2020-01-16 21:21:24,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:21:24,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:21:24,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:21:24,840 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:21:24,840 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:21:24,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:21:24,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:21:24,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:21:24,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:21:24,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:21:24,842 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:21:24,842 INFO L174 Difference]: Start difference. First operand has 350 places, 528 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:21:24,851 INFO L199 Difference]: Finished difference. Result has 359 places, 531 transitions [2020-01-16 21:21:24,852 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=34224, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=392, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=35467, PETRI_PLACES=359, PETRI_TRANSITIONS=531} [2020-01-16 21:21:24,852 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 359 places, 531 transitions [2020-01-16 21:21:24,852 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 359 places, 531 transitions [2020-01-16 21:21:31,308 INFO L129 PetriNetUnfolder]: 280/2749 cut-off events. [2020-01-16 21:21:31,308 INFO L130 PetriNetUnfolder]: For 734881/735077 co-relation queries the response was YES. [2020-01-16 21:21:31,363 INFO L76 FinitePrefix]: Finished finitePrefix Result has 32866 conditions, 2749 events. 280/2749 cut-off events. For 734881/735077 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 37542 event pairs. 13/2656 useless extension candidates. Maximal degree in co-relation 32186. Up to 282 conditions per place. [2020-01-16 21:21:31,372 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 359 places, 0 of 531 transitions, 281 of 35467 flow. [2020-01-16 21:21:31,372 INFO L478 AbstractCegarLoop]: Abstraction has has 358 places, 531 transitions [2020-01-16 21:21:31,372 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:21:35,685 INFO L129 PetriNetUnfolder]: 280/2497 cut-off events. [2020-01-16 21:21:35,685 INFO L130 PetriNetUnfolder]: For 734476/734670 co-relation queries the response was YES. [2020-01-16 21:21:35,685 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:21:35,685 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:21:35,686 INFO L426 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:21:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:21:35,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1340291742, now seen corresponding path program 30 times [2020-01-16 21:21:35,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:21:35,686 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921783904] [2020-01-16 21:21:35,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:21:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:21:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:21:35,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921783904] [2020-01-16 21:21:35,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:21:35,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:21:35,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999208398] [2020-01-16 21:21:35,893 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:21:35,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:21:35,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:21:35,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:21:35,894 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:21:35,894 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 531 transitions. Second operand 8 states. [2020-01-16 21:21:35,894 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:21:35,894 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:21:35,895 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:21:46,501 INFO L129 PetriNetUnfolder]: 405/3316 cut-off events. [2020-01-16 21:21:46,501 INFO L130 PetriNetUnfolder]: For 864922/865776 co-relation queries the response was YES. [2020-01-16 21:21:46,565 INFO L76 FinitePrefix]: Finished finitePrefix Result has 40004 conditions, 3316 events. 405/3316 cut-off events. For 864922/865776 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 45240 event pairs. 25/3310 useless extension candidates. Maximal degree in co-relation 39311. Up to 516 conditions per place. [2020-01-16 21:21:46,571 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 143 selfloop transitions, 460 changer transitions [2020-01-16 21:21:46,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:21:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:21:46,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:21:46,572 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:21:46,572 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:21:46,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:21:46,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:21:46,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:21:46,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:21:46,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:21:46,574 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:21:46,574 INFO L174 Difference]: Start difference. First operand has 358 places, 531 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:21:46,584 INFO L199 Difference]: Finished difference. Result has 370 places, 589 transitions [2020-01-16 21:21:46,585 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=35186, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40872, PETRI_PLACES=370, PETRI_TRANSITIONS=589} [2020-01-16 21:21:46,585 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 370 places, 589 transitions [2020-01-16 21:21:46,585 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 370 places, 589 transitions [2020-01-16 21:21:54,897 INFO L129 PetriNetUnfolder]: 318/3127 cut-off events. [2020-01-16 21:21:54,897 INFO L130 PetriNetUnfolder]: For 888626/888819 co-relation queries the response was YES. [2020-01-16 21:21:54,958 INFO L76 FinitePrefix]: Finished finitePrefix Result has 38195 conditions, 3127 events. 318/3127 cut-off events. For 888626/888819 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 43827 event pairs. 12/3038 useless extension candidates. Maximal degree in co-relation 37505. Up to 320 conditions per place. [2020-01-16 21:21:54,968 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 370 places, 0 of 589 transitions, 319 of 40872 flow. [2020-01-16 21:21:54,968 INFO L478 AbstractCegarLoop]: Abstraction has has 369 places, 589 transitions [2020-01-16 21:21:54,968 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:22:00,095 INFO L129 PetriNetUnfolder]: 318/2838 cut-off events. [2020-01-16 21:22:00,095 INFO L130 PetriNetUnfolder]: For 887812/887982 co-relation queries the response was YES. [2020-01-16 21:22:00,095 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:22:00,095 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:22:00,096 INFO L426 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:22:00,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:22:00,096 INFO L82 PathProgramCache]: Analyzing trace with hash 592924360, now seen corresponding path program 31 times [2020-01-16 21:22:00,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:22:00,096 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466460685] [2020-01-16 21:22:00,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:22:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:22:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:22:00,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466460685] [2020-01-16 21:22:00,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:22:00,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:22:00,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837281403] [2020-01-16 21:22:00,362 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:22:00,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:22:00,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:22:00,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:22:00,364 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:22:00,364 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 589 transitions. Second operand 8 states. [2020-01-16 21:22:00,364 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:22:00,364 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:22:00,364 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:22:13,303 INFO L129 PetriNetUnfolder]: 405/3316 cut-off events. [2020-01-16 21:22:13,304 INFO L130 PetriNetUnfolder]: For 922097/922659 co-relation queries the response was YES. [2020-01-16 21:22:13,376 INFO L76 FinitePrefix]: Finished finitePrefix Result has 41124 conditions, 3316 events. 405/3316 cut-off events. For 922097/922659 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 45264 event pairs. 2/3285 useless extension candidates. Maximal degree in co-relation 40421. Up to 493 conditions per place. [2020-01-16 21:22:13,383 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 198 selfloop transitions, 434 changer transitions [2020-01-16 21:22:13,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:22:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:22:13,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:22:13,384 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:22:13,384 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:22:13,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:22:13,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:22:13,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:22:13,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:22:13,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:22:13,386 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:22:13,386 INFO L174 Difference]: Start difference. First operand has 369 places, 589 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:22:13,402 INFO L199 Difference]: Finished difference. Result has 379 places, 604 transitions [2020-01-16 21:22:13,403 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=40553, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=418, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=42775, PETRI_PLACES=379, PETRI_TRANSITIONS=604} [2020-01-16 21:22:13,403 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 379 places, 604 transitions [2020-01-16 21:22:13,403 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 379 places, 604 transitions [2020-01-16 21:22:21,064 INFO L129 PetriNetUnfolder]: 318/3126 cut-off events. [2020-01-16 21:22:21,064 INFO L130 PetriNetUnfolder]: For 943754/943923 co-relation queries the response was YES. [2020-01-16 21:22:21,130 INFO L76 FinitePrefix]: Finished finitePrefix Result has 39088 conditions, 3126 events. 318/3126 cut-off events. For 943754/943923 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 43833 event pairs. 12/3035 useless extension candidates. Maximal degree in co-relation 38377. Up to 320 conditions per place. [2020-01-16 21:22:21,144 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 379 places, 0 of 604 transitions, 319 of 42775 flow. [2020-01-16 21:22:21,145 INFO L478 AbstractCegarLoop]: Abstraction has has 378 places, 604 transitions [2020-01-16 21:22:21,145 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:22:26,272 INFO L129 PetriNetUnfolder]: 318/2838 cut-off events. [2020-01-16 21:22:26,272 INFO L130 PetriNetUnfolder]: For 946866/947061 co-relation queries the response was YES. [2020-01-16 21:22:26,273 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:22:26,273 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:22:26,273 INFO L426 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:22:26,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:22:26,273 INFO L82 PathProgramCache]: Analyzing trace with hash -694610428, now seen corresponding path program 32 times [2020-01-16 21:22:26,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:22:26,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168398892] [2020-01-16 21:22:26,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:22:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:22:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:22:26,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168398892] [2020-01-16 21:22:26,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:22:26,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:22:26,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738854065] [2020-01-16 21:22:26,543 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:22:26,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:22:26,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:22:26,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:22:26,544 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:22:26,544 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 604 transitions. Second operand 8 states. [2020-01-16 21:22:26,544 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:22:26,544 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:22:26,544 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:22:39,203 INFO L129 PetriNetUnfolder]: 405/3332 cut-off events. [2020-01-16 21:22:39,204 INFO L130 PetriNetUnfolder]: For 980612/981178 co-relation queries the response was YES. [2020-01-16 21:22:39,275 INFO L76 FinitePrefix]: Finished finitePrefix Result has 42086 conditions, 3332 events. 405/3332 cut-off events. For 980612/981178 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 45615 event pairs. 10/3315 useless extension candidates. Maximal degree in co-relation 41362. Up to 703 conditions per place. [2020-01-16 21:22:39,282 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 231 selfloop transitions, 419 changer transitions [2020-01-16 21:22:39,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:22:39,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:22:39,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:22:39,283 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:22:39,283 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:22:39,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:22:39,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:22:39,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:22:39,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:22:39,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:22:39,285 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:22:39,285 INFO L174 Difference]: Start difference. First operand has 378 places, 604 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:22:39,302 INFO L199 Difference]: Finished difference. Result has 389 places, 612 transitions [2020-01-16 21:22:39,302 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=42456, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=410, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=44050, PETRI_PLACES=389, PETRI_TRANSITIONS=612} [2020-01-16 21:22:39,303 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 389 places, 612 transitions [2020-01-16 21:22:39,303 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 389 places, 612 transitions [2020-01-16 21:22:47,691 INFO L129 PetriNetUnfolder]: 318/3125 cut-off events. [2020-01-16 21:22:47,691 INFO L130 PetriNetUnfolder]: For 1000327/1000498 co-relation queries the response was YES. [2020-01-16 21:22:47,761 INFO L76 FinitePrefix]: Finished finitePrefix Result has 39791 conditions, 3125 events. 318/3125 cut-off events. For 1000327/1000498 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 43819 event pairs. 16/3047 useless extension candidates. Maximal degree in co-relation 39071. Up to 320 conditions per place. [2020-01-16 21:22:47,773 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 389 places, 0 of 612 transitions, 319 of 44050 flow. [2020-01-16 21:22:47,773 INFO L478 AbstractCegarLoop]: Abstraction has has 388 places, 612 transitions [2020-01-16 21:22:47,774 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:22:52,669 INFO L129 PetriNetUnfolder]: 318/2838 cut-off events. [2020-01-16 21:22:52,669 INFO L130 PetriNetUnfolder]: For 998976/999128 co-relation queries the response was YES. [2020-01-16 21:22:52,669 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:22:52,669 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:22:52,670 INFO L426 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:22:52,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:22:52,670 INFO L82 PathProgramCache]: Analyzing trace with hash 246653922, now seen corresponding path program 33 times [2020-01-16 21:22:52,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:22:52,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521863205] [2020-01-16 21:22:52,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:22:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:22:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:22:52,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521863205] [2020-01-16 21:22:52,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:22:52,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:22:52,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378950089] [2020-01-16 21:22:52,903 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:22:52,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:22:52,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:22:52,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:22:52,904 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:22:52,904 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 612 transitions. Second operand 8 states. [2020-01-16 21:22:52,904 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:22:52,904 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:22:52,904 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:23:05,551 INFO L129 PetriNetUnfolder]: 405/3366 cut-off events. [2020-01-16 21:23:05,551 INFO L130 PetriNetUnfolder]: For 1035582/1036076 co-relation queries the response was YES. [2020-01-16 21:23:05,872 INFO L76 FinitePrefix]: Finished finitePrefix Result has 42895 conditions, 3366 events. 405/3366 cut-off events. For 1035582/1036076 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 46314 event pairs. 10/3350 useless extension candidates. Maximal degree in co-relation 42162. Up to 755 conditions per place. [2020-01-16 21:23:05,879 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 293 selfloop transitions, 420 changer transitions [2020-01-16 21:23:05,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:23:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:23:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:23:05,880 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:23:05,880 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:23:05,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:23:05,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:23:05,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:23:05,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:23:05,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:23:05,882 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:23:05,882 INFO L174 Difference]: Start difference. First operand has 388 places, 612 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:23:05,894 INFO L199 Difference]: Finished difference. Result has 399 places, 626 transitions [2020-01-16 21:23:05,894 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=43731, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45636, PETRI_PLACES=399, PETRI_TRANSITIONS=626} [2020-01-16 21:23:05,894 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 399 places, 626 transitions [2020-01-16 21:23:05,895 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 399 places, 626 transitions [2020-01-16 21:23:16,528 INFO L129 PetriNetUnfolder]: 318/3124 cut-off events. [2020-01-16 21:23:16,528 INFO L130 PetriNetUnfolder]: For 1055473/1055621 co-relation queries the response was YES. [2020-01-16 21:23:16,604 INFO L76 FinitePrefix]: Finished finitePrefix Result has 40479 conditions, 3124 events. 318/3124 cut-off events. For 1055473/1055621 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 43805 event pairs. 13/3039 useless extension candidates. Maximal degree in co-relation 39745. Up to 320 conditions per place. [2020-01-16 21:23:16,615 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 399 places, 0 of 626 transitions, 319 of 45636 flow. [2020-01-16 21:23:16,615 INFO L478 AbstractCegarLoop]: Abstraction has has 398 places, 626 transitions [2020-01-16 21:23:16,615 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:23:22,522 INFO L129 PetriNetUnfolder]: 318/2838 cut-off events. [2020-01-16 21:23:22,523 INFO L130 PetriNetUnfolder]: For 1056294/1056498 co-relation queries the response was YES. [2020-01-16 21:23:22,523 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:23:22,523 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:23:22,523 INFO L426 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:23:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:23:22,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1628193060, now seen corresponding path program 34 times [2020-01-16 21:23:22,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:23:22,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241918685] [2020-01-16 21:23:22,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:23:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:23:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:23:22,769 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241918685] [2020-01-16 21:23:22,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:23:22,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:23:22,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122263786] [2020-01-16 21:23:22,770 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:23:22,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:23:22,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:23:22,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:23:22,770 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:23:22,771 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 626 transitions. Second operand 8 states. [2020-01-16 21:23:22,771 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:23:22,771 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:23:22,771 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:23:37,700 INFO L129 PetriNetUnfolder]: 438/3649 cut-off events. [2020-01-16 21:23:37,701 INFO L130 PetriNetUnfolder]: For 1213850/1214468 co-relation queries the response was YES. [2020-01-16 21:23:37,789 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47960 conditions, 3649 events. 438/3649 cut-off events. For 1213850/1214468 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 50882 event pairs. 12/3627 useless extension candidates. Maximal degree in co-relation 47213. Up to 756 conditions per place. [2020-01-16 21:23:37,798 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 287 selfloop transitions, 520 changer transitions [2020-01-16 21:23:37,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:23:37,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:23:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:23:37,799 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:23:37,799 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:23:37,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:23:37,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:23:37,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:23:37,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:23:37,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:23:37,801 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:23:37,801 INFO L174 Difference]: Start difference. First operand has 398 places, 626 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:23:37,818 INFO L199 Difference]: Finished difference. Result has 411 places, 716 transitions [2020-01-16 21:23:37,819 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=45317, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=53381, PETRI_PLACES=411, PETRI_TRANSITIONS=716} [2020-01-16 21:23:37,819 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 411 places, 716 transitions [2020-01-16 21:23:37,819 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 411 places, 716 transitions [2020-01-16 21:23:49,567 INFO L129 PetriNetUnfolder]: 353/3472 cut-off events. [2020-01-16 21:23:49,567 INFO L130 PetriNetUnfolder]: For 1250978/1251199 co-relation queries the response was YES. [2020-01-16 21:23:49,649 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46214 conditions, 3472 events. 353/3472 cut-off events. For 1250978/1251199 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 49590 event pairs. 23/3401 useless extension candidates. Maximal degree in co-relation 45461. Up to 355 conditions per place. [2020-01-16 21:23:49,661 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 411 places, 0 of 716 transitions, 0 of 53381 flow. [2020-01-16 21:23:49,662 INFO L478 AbstractCegarLoop]: Abstraction has has 411 places, 716 transitions [2020-01-16 21:23:49,662 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:23:57,109 INFO L129 PetriNetUnfolder]: 353/3152 cut-off events. [2020-01-16 21:23:57,109 INFO L130 PetriNetUnfolder]: For 1252917/1253189 co-relation queries the response was YES. [2020-01-16 21:23:57,109 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:23:57,109 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:23:57,109 INFO L426 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:23:57,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:23:57,109 INFO L82 PathProgramCache]: Analyzing trace with hash -369120136, now seen corresponding path program 35 times [2020-01-16 21:23:57,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:23:57,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721326727] [2020-01-16 21:23:57,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:23:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:23:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:23:57,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721326727] [2020-01-16 21:23:57,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:23:57,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:23:57,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672835396] [2020-01-16 21:23:57,359 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:23:57,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:23:57,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:23:57,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:23:57,360 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:23:57,360 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 716 transitions. Second operand 8 states. [2020-01-16 21:23:57,360 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:23:57,360 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:23:57,360 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:24:13,934 INFO L129 PetriNetUnfolder]: 438/3646 cut-off events. [2020-01-16 21:24:13,934 INFO L130 PetriNetUnfolder]: For 1290727/1291618 co-relation queries the response was YES. [2020-01-16 21:24:14,019 INFO L76 FinitePrefix]: Finished finitePrefix Result has 49752 conditions, 3646 events. 438/3646 cut-off events. For 1290727/1291618 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 50865 event pairs. 3/3606 useless extension candidates. Maximal degree in co-relation 48980. Up to 597 conditions per place. [2020-01-16 21:24:14,028 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 260 selfloop transitions, 491 changer transitions [2020-01-16 21:24:14,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:24:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:24:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:24:14,030 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:24:14,030 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:24:14,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:24:14,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:24:14,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:24:14,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:24:14,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:24:14,032 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:24:14,032 INFO L174 Difference]: Start difference. First operand has 411 places, 716 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:24:14,048 INFO L199 Difference]: Finished difference. Result has 421 places, 726 transitions [2020-01-16 21:24:14,049 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=53381, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=480, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=55253, PETRI_PLACES=421, PETRI_TRANSITIONS=726} [2020-01-16 21:24:14,049 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 421 places, 726 transitions [2020-01-16 21:24:14,049 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 421 places, 726 transitions [2020-01-16 21:24:27,121 INFO L129 PetriNetUnfolder]: 353/3471 cut-off events. [2020-01-16 21:24:27,121 INFO L130 PetriNetUnfolder]: For 1321592/1321864 co-relation queries the response was YES. [2020-01-16 21:24:27,204 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47352 conditions, 3471 events. 353/3471 cut-off events. For 1321592/1321864 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 49526 event pairs. 25/3398 useless extension candidates. Maximal degree in co-relation 46578. Up to 355 conditions per place. [2020-01-16 21:24:27,217 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 421 places, 0 of 726 transitions, 354 of 55253 flow. [2020-01-16 21:24:27,217 INFO L478 AbstractCegarLoop]: Abstraction has has 420 places, 726 transitions [2020-01-16 21:24:27,217 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:24:34,669 INFO L129 PetriNetUnfolder]: 353/3152 cut-off events. [2020-01-16 21:24:34,669 INFO L130 PetriNetUnfolder]: For 1320898/1321166 co-relation queries the response was YES. [2020-01-16 21:24:34,669 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:24:34,669 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:24:34,669 INFO L426 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:24:34,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:24:34,670 INFO L82 PathProgramCache]: Analyzing trace with hash -22315064, now seen corresponding path program 36 times [2020-01-16 21:24:34,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:24:34,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204152712] [2020-01-16 21:24:34,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:24:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:24:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:24:34,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204152712] [2020-01-16 21:24:34,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:24:34,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:24:34,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841164513] [2020-01-16 21:24:34,900 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:24:34,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:24:34,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:24:34,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:24:34,901 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:24:34,901 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 726 transitions. Second operand 8 states. [2020-01-16 21:24:34,901 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:24:34,901 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:24:34,901 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:24:55,394 INFO L129 PetriNetUnfolder]: 468/4014 cut-off events. [2020-01-16 21:24:55,395 INFO L130 PetriNetUnfolder]: For 1503850/1504741 co-relation queries the response was YES. [2020-01-16 21:24:55,495 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55509 conditions, 4014 events. 468/4014 cut-off events. For 1503850/1504741 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 57222 event pairs. 3/3975 useless extension candidates. Maximal degree in co-relation 54722. Up to 713 conditions per place. [2020-01-16 21:24:55,505 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 316 selfloop transitions, 547 changer transitions [2020-01-16 21:24:55,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:24:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:24:55,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:24:55,506 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:24:55,506 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:24:55,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:24:55,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:24:55,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:24:55,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:24:55,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:24:55,508 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:24:55,508 INFO L174 Difference]: Start difference. First operand has 420 places, 726 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:24:55,525 INFO L199 Difference]: Finished difference. Result has 433 places, 790 transitions [2020-01-16 21:24:55,526 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=54899, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=482, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=62351, PETRI_PLACES=433, PETRI_TRANSITIONS=790} [2020-01-16 21:24:55,526 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 433 places, 790 transitions [2020-01-16 21:24:55,526 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 433 places, 790 transitions [2020-01-16 21:25:09,753 INFO L129 PetriNetUnfolder]: 389/3816 cut-off events. [2020-01-16 21:25:09,753 INFO L130 PetriNetUnfolder]: For 1543966/1544250 co-relation queries the response was YES. [2020-01-16 21:25:09,843 INFO L76 FinitePrefix]: Finished finitePrefix Result has 53607 conditions, 3816 events. 389/3816 cut-off events. For 1543966/1544250 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 55384 event pairs. 31/3730 useless extension candidates. Maximal degree in co-relation 52806. Up to 391 conditions per place. [2020-01-16 21:25:09,857 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 433 places, 0 of 790 transitions, 390 of 62351 flow. [2020-01-16 21:25:09,858 INFO L478 AbstractCegarLoop]: Abstraction has has 432 places, 790 transitions [2020-01-16 21:25:09,858 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:25:20,747 INFO L129 PetriNetUnfolder]: 389/3462 cut-off events. [2020-01-16 21:25:20,747 INFO L130 PetriNetUnfolder]: For 1543562/1543798 co-relation queries the response was YES. [2020-01-16 21:25:20,747 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:25:20,748 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:25:20,748 INFO L426 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:25:20,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:25:20,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1054526604, now seen corresponding path program 37 times [2020-01-16 21:25:20,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:25:20,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957406034] [2020-01-16 21:25:20,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:25:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:25:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:25:20,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957406034] [2020-01-16 21:25:20,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:25:20,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:25:20,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156274727] [2020-01-16 21:25:20,985 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:25:20,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:25:20,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:25:20,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:25:20,986 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:25:20,986 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 790 transitions. Second operand 8 states. [2020-01-16 21:25:20,987 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:25:20,987 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:25:20,987 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:25:43,123 INFO L129 PetriNetUnfolder]: 475/4078 cut-off events. [2020-01-16 21:25:43,124 INFO L130 PetriNetUnfolder]: For 1636185/1637065 co-relation queries the response was YES. [2020-01-16 21:25:43,229 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58460 conditions, 4078 events. 475/4078 cut-off events. For 1636185/1637065 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 58414 event pairs. 18/4056 useless extension candidates. Maximal degree in co-relation 57646. Up to 827 conditions per place. [2020-01-16 21:25:43,240 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 360 selfloop transitions, 576 changer transitions [2020-01-16 21:25:43,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:25:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:25:43,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:25:43,241 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:25:43,241 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:25:43,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:25:43,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:25:43,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:25:43,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:25:43,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:25:43,243 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:25:43,243 INFO L174 Difference]: Start difference. First operand has 432 places, 790 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:25:43,259 INFO L199 Difference]: Finished difference. Result has 444 places, 827 transitions [2020-01-16 21:25:43,259 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=61961, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=66334, PETRI_PLACES=444, PETRI_TRANSITIONS=827} [2020-01-16 21:25:43,260 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 444 places, 827 transitions [2020-01-16 21:25:43,260 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 444 places, 827 transitions [2020-01-16 21:25:59,858 INFO L129 PetriNetUnfolder]: 400/3922 cut-off events. [2020-01-16 21:25:59,858 INFO L130 PetriNetUnfolder]: For 1670735/1670964 co-relation queries the response was YES. [2020-01-16 21:25:59,952 INFO L76 FinitePrefix]: Finished finitePrefix Result has 56248 conditions, 3922 events. 400/3922 cut-off events. For 1670735/1670964 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 57194 event pairs. 29/3837 useless extension candidates. Maximal degree in co-relation 55425. Up to 402 conditions per place. [2020-01-16 21:25:59,968 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 444 places, 0 of 827 transitions, 401 of 66334 flow. [2020-01-16 21:25:59,968 INFO L478 AbstractCegarLoop]: Abstraction has has 443 places, 827 transitions [2020-01-16 21:25:59,968 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:26:10,274 INFO L129 PetriNetUnfolder]: 400/3558 cut-off events. [2020-01-16 21:26:10,274 INFO L130 PetriNetUnfolder]: For 1669556/1669818 co-relation queries the response was YES. [2020-01-16 21:26:10,274 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:26:10,274 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:26:10,275 INFO L426 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:26:10,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:26:10,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1749781656, now seen corresponding path program 38 times [2020-01-16 21:26:10,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:26:10,275 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445421890] [2020-01-16 21:26:10,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:26:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:26:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:26:10,502 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445421890] [2020-01-16 21:26:10,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:26:10,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:26:10,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127076474] [2020-01-16 21:26:10,503 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:26:10,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:26:10,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:26:10,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:26:10,504 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:26:10,505 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 827 transitions. Second operand 8 states. [2020-01-16 21:26:10,505 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:26:10,505 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:26:10,505 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:26:36,147 INFO L129 PetriNetUnfolder]: 475/4125 cut-off events. [2020-01-16 21:26:36,147 INFO L130 PetriNetUnfolder]: For 1722124/1723039 co-relation queries the response was YES. [2020-01-16 21:26:36,288 INFO L76 FinitePrefix]: Finished finitePrefix Result has 59716 conditions, 4125 events. 475/4125 cut-off events. For 1722124/1723039 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 59277 event pairs. 14/4098 useless extension candidates. Maximal degree in co-relation 58880. Up to 845 conditions per place. [2020-01-16 21:26:36,299 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 378 selfloop transitions, 556 changer transitions [2020-01-16 21:26:36,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:26:36,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:26:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:26:36,300 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:26:36,301 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:26:36,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:26:36,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:26:36,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:26:36,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:26:36,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:26:36,302 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:26:36,302 INFO L174 Difference]: Start difference. First operand has 443 places, 827 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:26:36,319 INFO L199 Difference]: Finished difference. Result has 452 places, 838 transitions [2020-01-16 21:26:36,319 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=65933, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=544, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=68053, PETRI_PLACES=452, PETRI_TRANSITIONS=838} [2020-01-16 21:26:36,320 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 452 places, 838 transitions [2020-01-16 21:26:36,320 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 452 places, 838 transitions [2020-01-16 21:26:52,331 INFO L129 PetriNetUnfolder]: 400/3921 cut-off events. [2020-01-16 21:26:52,332 INFO L130 PetriNetUnfolder]: For 1754924/1755188 co-relation queries the response was YES. [2020-01-16 21:26:52,428 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57162 conditions, 3921 events. 400/3921 cut-off events. For 1754924/1755188 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 57148 event pairs. 22/3819 useless extension candidates. Maximal degree in co-relation 56327. Up to 402 conditions per place. [2020-01-16 21:26:52,444 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 452 places, 0 of 838 transitions, 401 of 68053 flow. [2020-01-16 21:26:52,444 INFO L478 AbstractCegarLoop]: Abstraction has has 451 places, 838 transitions [2020-01-16 21:26:52,444 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:27:01,861 INFO L129 PetriNetUnfolder]: 400/3558 cut-off events. [2020-01-16 21:27:01,861 INFO L130 PetriNetUnfolder]: For 1756730/1756996 co-relation queries the response was YES. [2020-01-16 21:27:01,861 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:27:01,862 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:27:01,862 INFO L426 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:27:01,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:27:01,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2039198516, now seen corresponding path program 39 times [2020-01-16 21:27:01,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:27:01,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146217508] [2020-01-16 21:27:01,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:27:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:27:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:27:02,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146217508] [2020-01-16 21:27:02,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:27:02,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:27:02,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468773541] [2020-01-16 21:27:02,088 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:27:02,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:27:02,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:27:02,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:27:02,090 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:27:02,090 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 838 transitions. Second operand 8 states. [2020-01-16 21:27:02,091 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:27:02,091 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:27:02,091 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:27:26,027 INFO L129 PetriNetUnfolder]: 475/4103 cut-off events. [2020-01-16 21:27:26,027 INFO L130 PetriNetUnfolder]: For 1810581/1811500 co-relation queries the response was YES. [2020-01-16 21:27:26,135 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60652 conditions, 4103 events. 475/4103 cut-off events. For 1810581/1811500 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 58892 event pairs. 14/4076 useless extension candidates. Maximal degree in co-relation 59844. Up to 821 conditions per place. [2020-01-16 21:27:26,146 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 356 selfloop transitions, 565 changer transitions [2020-01-16 21:27:26,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:27:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:27:26,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:27:26,147 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:27:26,147 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:27:26,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:27:26,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:27:26,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:27:26,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:27:26,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:27:26,148 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:27:26,148 INFO L174 Difference]: Start difference. First operand has 451 places, 838 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:27:26,165 INFO L199 Difference]: Finished difference. Result has 460 places, 857 transitions [2020-01-16 21:27:26,166 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=67652, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=545, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=70198, PETRI_PLACES=460, PETRI_TRANSITIONS=857} [2020-01-16 21:27:26,166 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 460 places, 857 transitions [2020-01-16 21:27:26,166 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 460 places, 857 transitions [2020-01-16 21:27:44,144 INFO L129 PetriNetUnfolder]: 400/3920 cut-off events. [2020-01-16 21:27:44,144 INFO L130 PetriNetUnfolder]: For 1845000/1845273 co-relation queries the response was YES. [2020-01-16 21:27:44,271 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58083 conditions, 3920 events. 400/3920 cut-off events. For 1845000/1845273 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 57107 event pairs. 28/3829 useless extension candidates. Maximal degree in co-relation 57277. Up to 402 conditions per place. [2020-01-16 21:27:44,287 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 460 places, 0 of 857 transitions, 401 of 70198 flow. [2020-01-16 21:27:44,287 INFO L478 AbstractCegarLoop]: Abstraction has has 459 places, 857 transitions [2020-01-16 21:27:44,287 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:27:54,177 INFO L129 PetriNetUnfolder]: 400/3558 cut-off events. [2020-01-16 21:27:54,178 INFO L130 PetriNetUnfolder]: For 1842397/1842604 co-relation queries the response was YES. [2020-01-16 21:27:54,178 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:27:54,178 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:27:54,178 INFO L426 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:27:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:27:54,178 INFO L82 PathProgramCache]: Analyzing trace with hash 432627254, now seen corresponding path program 40 times [2020-01-16 21:27:54,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:27:54,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576825104] [2020-01-16 21:27:54,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:27:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:27:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:27:54,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576825104] [2020-01-16 21:27:54,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:27:54,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:27:54,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138099606] [2020-01-16 21:27:54,415 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:27:54,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:27:54,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:27:54,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:27:54,416 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:27:54,416 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 857 transitions. Second operand 8 states. [2020-01-16 21:27:54,416 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:27:54,416 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:27:54,416 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:28:21,142 INFO L129 PetriNetUnfolder]: 483/4223 cut-off events. [2020-01-16 21:28:21,143 INFO L130 PetriNetUnfolder]: For 1971745/1972741 co-relation queries the response was YES. [2020-01-16 21:28:21,257 INFO L76 FinitePrefix]: Finished finitePrefix Result has 63635 conditions, 4223 events. 483/4223 cut-off events. For 1971745/1972741 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 60888 event pairs. 15/4191 useless extension candidates. Maximal degree in co-relation 62817. Up to 683 conditions per place. [2020-01-16 21:28:21,268 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 300 selfloop transitions, 618 changer transitions [2020-01-16 21:28:21,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:28:21,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:28:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:28:21,269 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:28:21,270 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:28:21,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:28:21,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:28:21,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:28:21,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:28:21,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:28:21,271 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:28:21,272 INFO L174 Difference]: Start difference. First operand has 459 places, 857 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:28:21,295 INFO L199 Difference]: Finished difference. Result has 471 places, 893 transitions [2020-01-16 21:28:21,296 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=69797, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=581, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=74527, PETRI_PLACES=471, PETRI_TRANSITIONS=893} [2020-01-16 21:28:21,296 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 471 places, 893 transitions [2020-01-16 21:28:21,296 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 471 places, 893 transitions [2020-01-16 21:28:42,254 INFO L129 PetriNetUnfolder]: 415/4074 cut-off events. [2020-01-16 21:28:42,255 INFO L130 PetriNetUnfolder]: For 2007990/2008195 co-relation queries the response was YES. [2020-01-16 21:28:42,364 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61441 conditions, 4074 events. 415/4074 cut-off events. For 2007990/2008195 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 59764 event pairs. 21/3978 useless extension candidates. Maximal degree in co-relation 60626. Up to 417 conditions per place. [2020-01-16 21:28:42,382 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 471 places, 0 of 893 transitions, 416 of 74527 flow. [2020-01-16 21:28:42,382 INFO L478 AbstractCegarLoop]: Abstraction has has 470 places, 893 transitions [2020-01-16 21:28:42,382 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:28:53,482 INFO L129 PetriNetUnfolder]: 415/3698 cut-off events. [2020-01-16 21:28:53,482 INFO L130 PetriNetUnfolder]: For 2007678/2007858 co-relation queries the response was YES. [2020-01-16 21:28:53,482 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:28:53,482 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:28:53,482 INFO L426 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:28:53,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:28:53,482 INFO L82 PathProgramCache]: Analyzing trace with hash -419787746, now seen corresponding path program 41 times [2020-01-16 21:28:53,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:28:53,483 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110815383] [2020-01-16 21:28:53,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:28:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:28:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:28:53,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110815383] [2020-01-16 21:28:53,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:28:53,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:28:53,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042140067] [2020-01-16 21:28:53,747 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:28:53,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:28:53,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:28:53,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:28:53,748 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:28:53,749 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 893 transitions. Second operand 8 states. [2020-01-16 21:28:53,749 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:28:53,749 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:28:53,749 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:29:21,974 INFO L129 PetriNetUnfolder]: 483/4219 cut-off events. [2020-01-16 21:29:21,974 INFO L130 PetriNetUnfolder]: For 2069657/2070661 co-relation queries the response was YES. [2020-01-16 21:29:22,097 INFO L76 FinitePrefix]: Finished finitePrefix Result has 64879 conditions, 4219 events. 483/4219 cut-off events. For 2069657/2070661 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 60812 event pairs. 24/4197 useless extension candidates. Maximal degree in co-relation 64052. Up to 688 conditions per place. [2020-01-16 21:29:22,109 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 320 selfloop transitions, 642 changer transitions [2020-01-16 21:29:22,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:29:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:29:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:29:22,110 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:29:22,110 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:29:22,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:29:22,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:29:22,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:29:22,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:29:22,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:29:22,112 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:29:22,112 INFO L174 Difference]: Start difference. First operand has 470 places, 893 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:29:22,132 INFO L199 Difference]: Finished difference. Result has 483 places, 926 transitions [2020-01-16 21:29:22,133 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=74111, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=608, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=78832, PETRI_PLACES=483, PETRI_TRANSITIONS=926} [2020-01-16 21:29:22,133 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 483 places, 926 transitions [2020-01-16 21:29:22,133 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 483 places, 926 transitions [2020-01-16 21:29:43,970 INFO L129 PetriNetUnfolder]: 415/4073 cut-off events. [2020-01-16 21:29:43,970 INFO L130 PetriNetUnfolder]: For 2112978/2113180 co-relation queries the response was YES. [2020-01-16 21:29:44,086 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62981 conditions, 4073 events. 415/4073 cut-off events. For 2112978/2113180 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 59791 event pairs. 22/3991 useless extension candidates. Maximal degree in co-relation 62146. Up to 417 conditions per place. [2020-01-16 21:29:44,105 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 483 places, 0 of 926 transitions, 416 of 78832 flow. [2020-01-16 21:29:44,105 INFO L478 AbstractCegarLoop]: Abstraction has has 482 places, 926 transitions [2020-01-16 21:29:44,105 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:29:56,937 INFO L129 PetriNetUnfolder]: 415/3698 cut-off events. [2020-01-16 21:29:56,937 INFO L130 PetriNetUnfolder]: For 2117092/2117486 co-relation queries the response was YES. [2020-01-16 21:29:56,937 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:29:56,938 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:29:56,938 INFO L426 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:29:56,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:29:56,938 INFO L82 PathProgramCache]: Analyzing trace with hash -2000252662, now seen corresponding path program 42 times [2020-01-16 21:29:56,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:29:56,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727469033] [2020-01-16 21:29:56,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:29:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:29:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:29:57,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727469033] [2020-01-16 21:29:57,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:29:57,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:29:57,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557286086] [2020-01-16 21:29:57,167 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:29:57,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:29:57,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:29:57,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:29:57,167 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:29:57,168 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 926 transitions. Second operand 8 states. [2020-01-16 21:29:57,168 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:29:57,168 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:29:57,168 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:30:31,514 INFO L129 PetriNetUnfolder]: 517/4607 cut-off events. [2020-01-16 21:30:31,515 INFO L130 PetriNetUnfolder]: For 2388261/2389875 co-relation queries the response was YES. [2020-01-16 21:30:31,653 INFO L76 FinitePrefix]: Finished finitePrefix Result has 72651 conditions, 4607 events. 517/4607 cut-off events. For 2388261/2389875 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 67792 event pairs. 41/4599 useless extension candidates. Maximal degree in co-relation 71804. Up to 859 conditions per place. [2020-01-16 21:30:31,668 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 494 selfloop transitions, 672 changer transitions [2020-01-16 21:30:31,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:30:31,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:30:31,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:30:31,670 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:30:31,670 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:30:31,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:30:31,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:30:31,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:30:31,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:30:31,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:30:31,672 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:30:31,672 INFO L174 Difference]: Start difference. First operand has 482 places, 926 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:30:31,704 INFO L199 Difference]: Finished difference. Result has 495 places, 1021 transitions [2020-01-16 21:30:31,705 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=78416, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=926, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=576, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=89191, PETRI_PLACES=495, PETRI_TRANSITIONS=1021} [2020-01-16 21:30:31,706 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 495 places, 1021 transitions [2020-01-16 21:30:31,706 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 495 places, 1021 transitions [2020-01-16 21:30:58,467 INFO L129 PetriNetUnfolder]: 454/4411 cut-off events. [2020-01-16 21:30:58,468 INFO L130 PetriNetUnfolder]: For 2439869/2440540 co-relation queries the response was YES. [2020-01-16 21:30:58,598 INFO L76 FinitePrefix]: Finished finitePrefix Result has 70580 conditions, 4411 events. 454/4411 cut-off events. For 2439869/2440540 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 65597 event pairs. 42/4325 useless extension candidates. Maximal degree in co-relation 69722. Up to 456 conditions per place. [2020-01-16 21:30:58,619 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 495 places, 0 of 1021 transitions, 455 of 89191 flow. [2020-01-16 21:30:58,619 INFO L478 AbstractCegarLoop]: Abstraction has has 494 places, 1021 transitions [2020-01-16 21:30:58,619 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 21:31:13,027 INFO L129 PetriNetUnfolder]: 454/3998 cut-off events. [2020-01-16 21:31:13,028 INFO L130 PetriNetUnfolder]: For 2440349/2441008 co-relation queries the response was YES. [2020-01-16 21:31:13,028 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:31:13,028 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:31:13,028 INFO L426 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:31:13,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:31:13,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1130779938, now seen corresponding path program 43 times [2020-01-16 21:31:13,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:31:13,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748336286] [2020-01-16 21:31:13,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:31:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:31:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:31:13,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748336286] [2020-01-16 21:31:13,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:31:13,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 21:31:13,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30515460] [2020-01-16 21:31:13,276 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 21:31:13,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:31:13,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 21:31:13,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 21:31:13,277 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2020-01-16 21:31:13,278 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 1021 transitions. Second operand 8 states. [2020-01-16 21:31:13,278 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:31:13,278 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2020-01-16 21:31:13,278 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:31:47,753 INFO L129 PetriNetUnfolder]: 518/4585 cut-off events. [2020-01-16 21:31:47,753 INFO L130 PetriNetUnfolder]: For 2525506/2527576 co-relation queries the response was YES. [2020-01-16 21:31:47,890 INFO L76 FinitePrefix]: Finished finitePrefix Result has 74801 conditions, 4585 events. 518/4585 cut-off events. For 2525506/2527576 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 67296 event pairs. 12/4533 useless extension candidates. Maximal degree in co-relation 73931. Up to 785 conditions per place. [2020-01-16 21:31:47,903 INFO L123 encePairwiseOnDemand]: 62/70 looper letters, 360 selfloop transitions, 707 changer transitions [2020-01-16 21:31:47,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 21:31:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-01-16 21:31:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-01-16 21:31:47,905 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-01-16 21:31:47,905 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-01-16 21:31:47,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-01-16 21:31:47,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:31:47,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-01-16 21:31:47,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-01-16 21:31:47,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-01-16 21:31:47,907 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-01-16 21:31:47,907 INFO L174 Difference]: Start difference. First operand has 494 places, 1021 transitions. Second operand 8 states and 473 transitions. [2020-01-16 21:31:47,929 INFO L199 Difference]: Finished difference. Result has 505 places, 1034 transitions [2020-01-16 21:31:47,929 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=88736, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1021, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=693, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=91731, PETRI_PLACES=505, PETRI_TRANSITIONS=1034} [2020-01-16 21:31:47,930 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 505 places, 1034 transitions [2020-01-16 21:31:47,930 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 505 places, 1034 transitions [2020-01-16 21:32:14,316 INFO L129 PetriNetUnfolder]: 458/4452 cut-off events. [2020-01-16 21:32:14,316 INFO L130 PetriNetUnfolder]: For 2573853/2574514 co-relation queries the response was YES. [2020-01-16 21:32:14,452 INFO L76 FinitePrefix]: Finished finitePrefix Result has 72230 conditions, 4452 events. 458/4452 cut-off events. For 2573853/2574514 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 66349 event pairs. 35/4357 useless extension candidates. Maximal degree in co-relation 71361. Up to 460 conditions per place. [2020-01-16 21:32:14,473 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 505 places, 0 of 1034 transitions, 459 of 91731 flow. [2020-01-16 21:32:14,473 INFO L478 AbstractCegarLoop]: Abstraction has has 504 places, 1034 transitions [2020-01-16 21:32:14,473 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. Received shutdown request... [2020-01-16 21:32:16,462 WARN L543 AbstractCegarLoop]: Verification canceled [2020-01-16 21:32:16,465 WARN L227 ceAbstractionStarter]: Timeout [2020-01-16 21:32:16,466 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 09:32:16 BasicIcfg [2020-01-16 21:32:16,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 21:32:16,468 INFO L168 Benchmark]: Toolchain (without parser) took 824272.21 ms. Allocated memory was 135.8 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 116.5 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2020-01-16 21:32:16,468 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.47 ms. Allocated memory is still 135.8 MB. Free memory was 117.7 MB in the beginning and 117.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 21:32:16,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.66 ms. Allocated memory is still 135.8 MB. Free memory was 116.3 MB in the beginning and 114.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-01-16 21:32:16,469 INFO L168 Benchmark]: Boogie Preprocessor took 21.27 ms. Allocated memory is still 135.8 MB. Free memory was 114.7 MB in the beginning and 113.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 21:32:16,469 INFO L168 Benchmark]: RCFGBuilder took 337.54 ms. Allocated memory is still 135.8 MB. Free memory was 113.4 MB in the beginning and 101.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-01-16 21:32:16,470 INFO L168 Benchmark]: TraceAbstraction took 823869.95 ms. Allocated memory was 135.8 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 101.1 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2020-01-16 21:32:16,472 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.47 ms. Allocated memory is still 135.8 MB. Free memory was 117.7 MB in the beginning and 117.5 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 38.66 ms. Allocated memory is still 135.8 MB. Free memory was 116.3 MB in the beginning and 114.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.27 ms. Allocated memory is still 135.8 MB. Free memory was 114.7 MB in the beginning and 113.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 337.54 ms. Allocated memory is still 135.8 MB. Free memory was 113.4 MB in the beginning and 101.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 823869.95 ms. Allocated memory was 135.8 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 101.1 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.4s, 52 ProgramPointsBefore, 44 ProgramPointsAfterwards, 63 TransitionsBefore, 56 TransitionsAfterwards, 780 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 210 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 225 CheckedPairsTotal, 7 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 25). Cancelled while PetriNetUnfolder was constructing finite prefix that currently has 13445 conditions, 613 events (0/612 cut-off events. For 452284/452962 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 10730 event pairs. 40/1218 useless extension candidates. Maximal degree in co-relation 13198. Up to 115 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 823.6s, OverallIterations: 48, TraceHistogramMax: 1, AutomataDifference: 380.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 894 SDtfs, 924 SDslu, 696 SDs, 0 SdLazy, 1974 SolverSat, 222 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 359 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=504occurred in iteration=48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 279.0s AutomataMinimizationTime, 48 MinimizatonAttempts, 43 StatesRemovedByMinimization, 48 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 912 NumberOfCodeBlocks, 912 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 864 ConstructedInterpolants, 0 QuantifiedInterpolants, 264582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 48 InterpolantComputations, 48 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown