/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-VariableLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 23:28:36,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 23:28:36,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 23:28:36,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 23:28:36,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 23:28:36,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 23:28:36,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 23:28:36,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 23:28:36,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 23:28:36,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 23:28:36,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 23:28:36,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 23:28:36,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 23:28:36,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 23:28:36,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 23:28:36,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 23:28:36,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 23:28:36,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 23:28:36,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 23:28:36,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 23:28:36,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 23:28:36,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 23:28:36,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 23:28:36,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 23:28:36,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 23:28:36,106 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-VariableLbe.epf [2020-02-10 23:28:36,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 23:28:36,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 23:28:36,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 23:28:36,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 23:28:36,132 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 23:28:36,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 23:28:36,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 23:28:36,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 23:28:36,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 23:28:36,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 23:28:36,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 23:28:36,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 23:28:36,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 23:28:36,134 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 23:28:36,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 23:28:36,134 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 23:28:36,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 23:28:36,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 23:28:36,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 23:28:36,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 23:28:36,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 23:28:36,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:28:36,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 23:28:36,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 23:28:36,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 23:28:36,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 23:28:36,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 23:28:36,137 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-02-10 23:28:36,137 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-10 23:28:36,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 23:28:36,400 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 23:28:36,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 23:28:36,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 23:28:36,425 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 23:28:36,425 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 23:28:36,426 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl [2020-02-10 23:28:36,428 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl' [2020-02-10 23:28:36,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 23:28:36,469 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 23:28:36,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 23:28:36,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 23:28:36,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 23:28:36,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:36" (1/1) ... [2020-02-10 23:28:36,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:36" (1/1) ... [2020-02-10 23:28:36,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 23:28:36,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 23:28:36,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 23:28:36,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 23:28:36,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:36" (1/1) ... [2020-02-10 23:28:36,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:36" (1/1) ... [2020-02-10 23:28:36,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:36" (1/1) ... [2020-02-10 23:28:36,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:36" (1/1) ... [2020-02-10 23:28:36,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:36" (1/1) ... [2020-02-10 23:28:36,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:36" (1/1) ... [2020-02-10 23:28:36,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:36" (1/1) ... [2020-02-10 23:28:36,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 23:28:36,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 23:28:36,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 23:28:36,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 23:28:36,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:28:36,603 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 23:28:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 23:28:36,605 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 23:28:36,605 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 23:28:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 23:28:36,606 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 23:28:36,606 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 23:28:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 23:28:36,609 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 23:28:36,609 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 23:28:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 23:28:36,609 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 23:28:36,610 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 23:28:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 23:28:36,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 23:28:36,611 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 23:28:36,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 23:28:36,763 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 23:28:36,766 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:28:36 BoogieIcfgContainer [2020-02-10 23:28:36,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 23:28:36,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 23:28:36,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 23:28:36,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 23:28:36,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:36" (1/2) ... [2020-02-10 23:28:36,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a738f29 and model type example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:28:36, skipping insertion in model container [2020-02-10 23:28:36,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:28:36" (2/2) ... [2020-02-10 23:28:36,774 INFO L109 eAbstractionObserver]: Analyzing ICFG example_4.bpl [2020-02-10 23:28:36,784 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 23:28:36,791 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 23:28:36,791 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 23:28:36,895 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-02-10 23:28:36,922 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 23:28:36,922 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-10 23:28:36,922 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 23:28:36,922 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 23:28:36,923 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 23:28:36,923 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 23:28:36,923 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 23:28:36,923 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 23:28:36,935 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions [2020-02-10 23:28:36,994 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2020-02-10 23:28:36,995 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-02-10 23:28:37,004 INFO L76 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 47 events. 17/47 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs. 0/46 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2020-02-10 23:28:37,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 35 transitions [2020-02-10 23:28:37,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 29 transitions [2020-02-10 23:28:37,025 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 29 transitions [2020-02-10 23:28:37,026 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 30 places, 29 transitions [2020-02-10 23:28:37,050 INFO L129 PetriNetUnfolder]: 17/45 cut-off events. [2020-02-10 23:28:37,051 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-02-10 23:28:37,055 INFO L76 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 45 events. 17/45 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 100 event pairs. 0/45 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2020-02-10 23:28:37,059 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 30 places, 29 transitions [2020-02-10 23:28:37,099 INFO L129 PetriNetUnfolder]: 17/45 cut-off events. [2020-02-10 23:28:37,099 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-02-10 23:28:37,100 INFO L76 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 45 events. 17/45 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 100 event pairs. 0/45 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2020-02-10 23:28:37,102 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 216 [2020-02-10 23:28:37,103 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-02-10 23:28:37,170 INFO L206 etLargeBlockEncoding]: Checked pairs total: 66 [2020-02-10 23:28:37,171 INFO L214 etLargeBlockEncoding]: Total number of compositions: 4 [2020-02-10 23:28:37,171 INFO L160 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 151 [2020-02-10 23:28:37,189 INFO L129 PetriNetUnfolder]: 17/40 cut-off events. [2020-02-10 23:28:37,189 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-02-10 23:28:37,190 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:37,191 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:37,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:37,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:37,198 INFO L82 PathProgramCache]: Analyzing trace with hash -310091457, now seen corresponding path program 1 times [2020-02-10 23:28:37,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:37,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810667430] [2020-02-10 23:28:37,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:37,350 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810667430] [2020-02-10 23:28:37,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:37,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:37,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414393208] [2020-02-10 23:28:37,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:37,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:37,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:37,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:37,384 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2020-02-10 23:28:37,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions. Second operand 3 states. [2020-02-10 23:28:37,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:37,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2020-02-10 23:28:37,388 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:37,433 INFO L129 PetriNetUnfolder]: 14/37 cut-off events. [2020-02-10 23:28:37,434 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2020-02-10 23:28:37,435 INFO L76 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 37 events. 14/37 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 73 event pairs. 1/38 useless extension candidates. Maximal degree in co-relation 35. Up to 12 conditions per place. [2020-02-10 23:28:37,443 INFO L145 encePairwiseOnDemand]: 37/39 looper letters, 3 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2020-02-10 23:28:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:37,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2020-02-10 23:28:37,466 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9145299145299145 [2020-02-10 23:28:37,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2020-02-10 23:28:37,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2020-02-10 23:28:37,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:37,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2020-02-10 23:28:37,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:37,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:37,481 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:37,484 INFO L178 Difference]: Start difference. First operand has 26 places, 25 transitions. Second operand 3 states and 107 transitions. [2020-02-10 23:28:37,485 INFO L206 Difference]: Finished difference. Result has 28 places, 24 transitions [2020-02-10 23:28:37,488 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2020-02-10 23:28:37,489 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions [2020-02-10 23:28:37,508 INFO L129 PetriNetUnfolder]: 14/37 cut-off events. [2020-02-10 23:28:37,508 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2020-02-10 23:28:37,512 INFO L76 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 37 events. 14/37 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 74 event pairs. 0/37 useless extension candidates. Maximal degree in co-relation 67. Up to 12 conditions per place. [2020-02-10 23:28:37,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions [2020-02-10 23:28:37,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 24 transitions [2020-02-10 23:28:37,516 INFO L479 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions [2020-02-10 23:28:37,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:37,532 INFO L129 PetriNetUnfolder]: 14/36 cut-off events. [2020-02-10 23:28:37,532 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2020-02-10 23:28:37,532 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:37,534 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:37,535 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:37,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:37,535 INFO L82 PathProgramCache]: Analyzing trace with hash 111906175, now seen corresponding path program 1 times [2020-02-10 23:28:37,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:37,547 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282092127] [2020-02-10 23:28:37,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:37,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:37,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282092127] [2020-02-10 23:28:37,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:37,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:37,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074963640] [2020-02-10 23:28:37,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:37,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:37,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:37,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:37,577 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2020-02-10 23:28:37,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions. Second operand 3 states. [2020-02-10 23:28:37,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:37,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2020-02-10 23:28:37,578 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:37,598 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2020-02-10 23:28:37,599 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-02-10 23:28:37,601 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 19 events. 3/19 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs. 6/25 useless extension candidates. Maximal degree in co-relation 33. Up to 4 conditions per place. [2020-02-10 23:28:37,603 INFO L145 encePairwiseOnDemand]: 35/39 looper letters, 1 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2020-02-10 23:28:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:37,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2020-02-10 23:28:37,606 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9145299145299145 [2020-02-10 23:28:37,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2020-02-10 23:28:37,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2020-02-10 23:28:37,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:37,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2020-02-10 23:28:37,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:37,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:37,610 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:37,610 INFO L178 Difference]: Start difference. First operand has 28 places, 24 transitions. Second operand 3 states and 107 transitions. [2020-02-10 23:28:37,611 INFO L206 Difference]: Finished difference. Result has 30 places, 18 transitions [2020-02-10 23:28:37,611 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2020-02-10 23:28:37,612 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 30 places, 18 transitions [2020-02-10 23:28:37,622 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2020-02-10 23:28:37,625 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-02-10 23:28:37,626 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 19 events. 3/19 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs. 0/19 useless extension candidates. Maximal degree in co-relation 32. Up to 4 conditions per place. [2020-02-10 23:28:37,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 18 transitions [2020-02-10 23:28:37,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 18 transitions [2020-02-10 23:28:37,627 INFO L479 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions [2020-02-10 23:28:37,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:37,636 INFO L129 PetriNetUnfolder]: 3/18 cut-off events. [2020-02-10 23:28:37,636 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-02-10 23:28:37,636 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:37,636 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:37,637 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:37,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:37,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2047814547, now seen corresponding path program 1 times [2020-02-10 23:28:37,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:37,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495239987] [2020-02-10 23:28:37,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:37,680 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495239987] [2020-02-10 23:28:37,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:37,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:37,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943916954] [2020-02-10 23:28:37,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:37,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:37,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:37,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:37,682 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2020-02-10 23:28:37,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions. Second operand 3 states. [2020-02-10 23:28:37,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:37,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2020-02-10 23:28:37,683 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:37,696 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-02-10 23:28:37,696 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2020-02-10 23:28:37,698 INFO L76 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 13 events. 0/13 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs. 2/15 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2020-02-10 23:28:37,698 INFO L145 encePairwiseOnDemand]: 36/39 looper letters, 1 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2020-02-10 23:28:37,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2020-02-10 23:28:37,704 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.905982905982906 [2020-02-10 23:28:37,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 106 transitions. [2020-02-10 23:28:37,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 106 transitions. [2020-02-10 23:28:37,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:37,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 106 transitions. [2020-02-10 23:28:37,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:37,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:37,707 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:37,708 INFO L178 Difference]: Start difference. First operand has 30 places, 18 transitions. Second operand 3 states and 106 transitions. [2020-02-10 23:28:37,708 INFO L206 Difference]: Finished difference. Result has 32 places, 13 transitions [2020-02-10 23:28:37,708 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=13} [2020-02-10 23:28:37,709 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 32 places, 13 transitions [2020-02-10 23:28:37,712 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-02-10 23:28:37,713 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-02-10 23:28:37,713 INFO L76 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 13 events. 0/13 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs. 0/13 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2020-02-10 23:28:37,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 13 transitions [2020-02-10 23:28:37,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 13 transitions [2020-02-10 23:28:37,714 INFO L479 AbstractCegarLoop]: Abstraction has has 32 places, 13 transitions [2020-02-10 23:28:37,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:37,718 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-02-10 23:28:37,718 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-02-10 23:28:37,719 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:37,719 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:37,719 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:37,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:37,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1958479669, now seen corresponding path program 1 times [2020-02-10 23:28:37,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:37,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388813289] [2020-02-10 23:28:37,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:37,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:37,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388813289] [2020-02-10 23:28:37,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:37,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:37,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137329890] [2020-02-10 23:28:37,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:37,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:37,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:37,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:37,988 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:37,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 13 transitions. Second operand 6 states. [2020-02-10 23:28:37,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:37,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:37,989 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:38,109 INFO L129 PetriNetUnfolder]: 15/60 cut-off events. [2020-02-10 23:28:38,109 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-02-10 23:28:38,110 INFO L76 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 60 events. 15/60 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 204 event pairs. 1/55 useless extension candidates. Maximal degree in co-relation 120. Up to 17 conditions per place. [2020-02-10 23:28:38,112 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 9 selfloop transitions, 3 changer transitions 1/21 dead transitions. [2020-02-10 23:28:38,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:28:38,118 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:28:38,118 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:28:38,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:28:38,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:38,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:28:38,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:38,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:38,125 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:38,125 INFO L178 Difference]: Start difference. First operand has 32 places, 13 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:28:38,129 INFO L206 Difference]: Finished difference. Result has 41 places, 15 transitions [2020-02-10 23:28:38,129 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=41, PETRI_TRANSITIONS=15} [2020-02-10 23:28:38,129 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 41 places, 15 transitions [2020-02-10 23:28:38,137 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2020-02-10 23:28:38,137 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2020-02-10 23:28:38,139 INFO L76 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 25 events. 0/25 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs. 0/21 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-02-10 23:28:38,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 15 transitions [2020-02-10 23:28:38,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 15 transitions [2020-02-10 23:28:38,141 INFO L479 AbstractCegarLoop]: Abstraction has has 40 places, 15 transitions [2020-02-10 23:28:38,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:38,148 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-02-10 23:28:38,149 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2020-02-10 23:28:38,149 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:38,149 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:38,149 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:38,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:38,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1012289417, now seen corresponding path program 2 times [2020-02-10 23:28:38,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:38,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886062884] [2020-02-10 23:28:38,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:38,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886062884] [2020-02-10 23:28:38,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:38,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:38,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684685132] [2020-02-10 23:28:38,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:38,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:38,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:38,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:38,356 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:38,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 15 transitions. Second operand 6 states. [2020-02-10 23:28:38,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:38,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:38,356 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:38,471 INFO L129 PetriNetUnfolder]: 11/87 cut-off events. [2020-02-10 23:28:38,471 INFO L130 PetriNetUnfolder]: For 107/112 co-relation queries the response was YES. [2020-02-10 23:28:38,472 INFO L76 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 87 events. 11/87 cut-off events. For 107/112 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 424 event pairs. 1/81 useless extension candidates. Maximal degree in co-relation 233. Up to 21 conditions per place. [2020-02-10 23:28:38,476 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 10 selfloop transitions, 4 changer transitions 1/23 dead transitions. [2020-02-10 23:28:38,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:38,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:28:38,481 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:28:38,482 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:28:38,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:28:38,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:38,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:28:38,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:38,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:38,486 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:38,486 INFO L178 Difference]: Start difference. First operand has 40 places, 15 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:28:38,487 INFO L206 Difference]: Finished difference. Result has 49 places, 18 transitions [2020-02-10 23:28:38,487 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=49, PETRI_TRANSITIONS=18} [2020-02-10 23:28:38,488 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 18 transitions [2020-02-10 23:28:38,499 INFO L129 PetriNetUnfolder]: 0/57 cut-off events. [2020-02-10 23:28:38,500 INFO L130 PetriNetUnfolder]: For 99/101 co-relation queries the response was YES. [2020-02-10 23:28:38,501 INFO L76 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 57 events. 0/57 cut-off events. For 99/101 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 246 event pairs. 0/50 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2020-02-10 23:28:38,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 18 transitions [2020-02-10 23:28:38,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 18 transitions [2020-02-10 23:28:38,503 INFO L479 AbstractCegarLoop]: Abstraction has has 48 places, 18 transitions [2020-02-10 23:28:38,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:38,522 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2020-02-10 23:28:38,522 INFO L130 PetriNetUnfolder]: For 100/102 co-relation queries the response was YES. [2020-02-10 23:28:38,522 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:38,523 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:38,523 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:38,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1473450575, now seen corresponding path program 3 times [2020-02-10 23:28:38,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:38,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625229222] [2020-02-10 23:28:38,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:38,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625229222] [2020-02-10 23:28:38,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:38,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:38,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700899810] [2020-02-10 23:28:38,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:38,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:38,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:38,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:38,667 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:38,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 18 transitions. Second operand 6 states. [2020-02-10 23:28:38,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:38,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:38,668 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:38,755 INFO L129 PetriNetUnfolder]: 9/91 cut-off events. [2020-02-10 23:28:38,755 INFO L130 PetriNetUnfolder]: For 249/264 co-relation queries the response was YES. [2020-02-10 23:28:38,756 INFO L76 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 91 events. 9/91 cut-off events. For 249/264 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 471 event pairs. 1/86 useless extension candidates. Maximal degree in co-relation 298. Up to 21 conditions per place. [2020-02-10 23:28:38,758 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 11 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2020-02-10 23:28:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:38,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:28:38,759 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:28:38,759 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:28:38,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:28:38,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:38,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:28:38,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:38,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:38,762 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:38,762 INFO L178 Difference]: Start difference. First operand has 48 places, 18 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:28:38,762 INFO L206 Difference]: Finished difference. Result has 56 places, 19 transitions [2020-02-10 23:28:38,763 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=56, PETRI_TRANSITIONS=19} [2020-02-10 23:28:38,763 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 56 places, 19 transitions [2020-02-10 23:28:38,773 INFO L129 PetriNetUnfolder]: 0/67 cut-off events. [2020-02-10 23:28:38,773 INFO L130 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2020-02-10 23:28:38,774 INFO L76 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 67 events. 0/67 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 328 event pairs. 0/60 useless extension candidates. Maximal degree in co-relation 210. Up to 9 conditions per place. [2020-02-10 23:28:38,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 19 transitions [2020-02-10 23:28:38,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 19 transitions [2020-02-10 23:28:38,776 INFO L479 AbstractCegarLoop]: Abstraction has has 55 places, 19 transitions [2020-02-10 23:28:38,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:38,785 INFO L129 PetriNetUnfolder]: 0/59 cut-off events. [2020-02-10 23:28:38,785 INFO L130 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2020-02-10 23:28:38,785 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:38,786 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:38,786 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:38,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:38,786 INFO L82 PathProgramCache]: Analyzing trace with hash -76992545, now seen corresponding path program 4 times [2020-02-10 23:28:38,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:38,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016447432] [2020-02-10 23:28:38,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:38,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016447432] [2020-02-10 23:28:38,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:38,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:38,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485921155] [2020-02-10 23:28:38,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:38,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:38,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:38,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:38,982 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:38,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 19 transitions. Second operand 6 states. [2020-02-10 23:28:38,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:38,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:38,982 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:39,069 INFO L129 PetriNetUnfolder]: 7/105 cut-off events. [2020-02-10 23:28:39,069 INFO L130 PetriNetUnfolder]: For 422/437 co-relation queries the response was YES. [2020-02-10 23:28:39,070 INFO L76 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 105 events. 7/105 cut-off events. For 422/437 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 616 event pairs. 1/101 useless extension candidates. Maximal degree in co-relation 374. Up to 25 conditions per place. [2020-02-10 23:28:39,073 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 11 selfloop transitions, 9 changer transitions 2/30 dead transitions. [2020-02-10 23:28:39,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:39,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:39,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:28:39,076 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:28:39,076 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:28:39,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:28:39,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:39,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:28:39,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:39,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:39,078 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:39,078 INFO L178 Difference]: Start difference. First operand has 55 places, 19 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:28:39,080 INFO L206 Difference]: Finished difference. Result has 64 places, 22 transitions [2020-02-10 23:28:39,083 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=207, PETRI_PLACES=64, PETRI_TRANSITIONS=22} [2020-02-10 23:28:39,083 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 22 transitions [2020-02-10 23:28:39,097 INFO L129 PetriNetUnfolder]: 0/84 cut-off events. [2020-02-10 23:28:39,098 INFO L130 PetriNetUnfolder]: For 436/442 co-relation queries the response was YES. [2020-02-10 23:28:39,108 INFO L76 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 84 events. 0/84 cut-off events. For 436/442 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 475 event pairs. 0/75 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2020-02-10 23:28:39,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 22 transitions [2020-02-10 23:28:39,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 22 transitions [2020-02-10 23:28:39,112 INFO L479 AbstractCegarLoop]: Abstraction has has 63 places, 22 transitions [2020-02-10 23:28:39,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:39,126 INFO L129 PetriNetUnfolder]: 0/74 cut-off events. [2020-02-10 23:28:39,126 INFO L130 PetriNetUnfolder]: For 436/442 co-relation queries the response was YES. [2020-02-10 23:28:39,126 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:39,126 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:39,126 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:39,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1061434001, now seen corresponding path program 5 times [2020-02-10 23:28:39,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:39,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926269843] [2020-02-10 23:28:39,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:39,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926269843] [2020-02-10 23:28:39,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:39,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:39,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636984890] [2020-02-10 23:28:39,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:39,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:39,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:39,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:39,321 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:39,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 22 transitions. Second operand 6 states. [2020-02-10 23:28:39,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:39,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:39,322 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:39,431 INFO L129 PetriNetUnfolder]: 7/99 cut-off events. [2020-02-10 23:28:39,432 INFO L130 PetriNetUnfolder]: For 654/669 co-relation queries the response was YES. [2020-02-10 23:28:39,433 INFO L76 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 99 events. 7/99 cut-off events. For 654/669 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 548 event pairs. 1/93 useless extension candidates. Maximal degree in co-relation 416. Up to 25 conditions per place. [2020-02-10 23:28:39,436 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 14 selfloop transitions, 4 changer transitions 1/27 dead transitions. [2020-02-10 23:28:39,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:39,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:28:39,438 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:28:39,438 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:28:39,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:28:39,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:39,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:28:39,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:39,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:39,440 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:39,440 INFO L178 Difference]: Start difference. First operand has 63 places, 22 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:28:39,441 INFO L206 Difference]: Finished difference. Result has 70 places, 22 transitions [2020-02-10 23:28:39,441 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=70, PETRI_TRANSITIONS=22} [2020-02-10 23:28:39,441 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 22 transitions [2020-02-10 23:28:39,458 INFO L129 PetriNetUnfolder]: 0/79 cut-off events. [2020-02-10 23:28:39,459 INFO L130 PetriNetUnfolder]: For 552/558 co-relation queries the response was YES. [2020-02-10 23:28:39,460 INFO L76 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 79 events. 0/79 cut-off events. For 552/558 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 430 event pairs. 0/70 useless extension candidates. Maximal degree in co-relation 314. Up to 11 conditions per place. [2020-02-10 23:28:39,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 22 transitions [2020-02-10 23:28:39,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 22 transitions [2020-02-10 23:28:39,463 INFO L479 AbstractCegarLoop]: Abstraction has has 69 places, 22 transitions [2020-02-10 23:28:39,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:39,479 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2020-02-10 23:28:39,479 INFO L130 PetriNetUnfolder]: For 552/558 co-relation queries the response was YES. [2020-02-10 23:28:39,479 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:39,480 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:39,480 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:39,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:39,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1484748849, now seen corresponding path program 6 times [2020-02-10 23:28:39,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:39,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695782768] [2020-02-10 23:28:39,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:39,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695782768] [2020-02-10 23:28:39,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:39,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:39,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101177194] [2020-02-10 23:28:39,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:39,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:39,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:39,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:39,582 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:39,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 22 transitions. Second operand 6 states. [2020-02-10 23:28:39,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:39,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:39,583 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:39,679 INFO L129 PetriNetUnfolder]: 3/123 cut-off events. [2020-02-10 23:28:39,679 INFO L130 PetriNetUnfolder]: For 1015/1030 co-relation queries the response was YES. [2020-02-10 23:28:39,680 INFO L76 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 123 events. 3/123 cut-off events. For 1015/1030 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 807 event pairs. 1/118 useless extension candidates. Maximal degree in co-relation 548. Up to 30 conditions per place. [2020-02-10 23:28:39,683 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 14 selfloop transitions, 7 changer transitions 2/31 dead transitions. [2020-02-10 23:28:39,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:39,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:39,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:28:39,684 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:28:39,685 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:28:39,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:28:39,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:39,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:28:39,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:39,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:39,687 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:39,687 INFO L178 Difference]: Start difference. First operand has 69 places, 22 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:28:39,688 INFO L206 Difference]: Finished difference. Result has 78 places, 26 transitions [2020-02-10 23:28:39,688 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=78, PETRI_TRANSITIONS=26} [2020-02-10 23:28:39,688 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 78 places, 26 transitions [2020-02-10 23:28:39,708 INFO L129 PetriNetUnfolder]: 0/109 cut-off events. [2020-02-10 23:28:39,709 INFO L130 PetriNetUnfolder]: For 1112/1112 co-relation queries the response was YES. [2020-02-10 23:28:39,710 INFO L76 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 109 events. 0/109 cut-off events. For 1112/1112 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 693 event pairs. 0/102 useless extension candidates. Maximal degree in co-relation 490. Up to 15 conditions per place. [2020-02-10 23:28:39,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 26 transitions [2020-02-10 23:28:39,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 26 transitions [2020-02-10 23:28:39,712 INFO L479 AbstractCegarLoop]: Abstraction has has 77 places, 26 transitions [2020-02-10 23:28:39,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:39,730 INFO L129 PetriNetUnfolder]: 0/96 cut-off events. [2020-02-10 23:28:39,731 INFO L130 PetriNetUnfolder]: For 1113/1113 co-relation queries the response was YES. [2020-02-10 23:28:39,731 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:39,731 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:39,731 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:39,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:39,732 INFO L82 PathProgramCache]: Analyzing trace with hash -625874319, now seen corresponding path program 7 times [2020-02-10 23:28:39,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:39,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656726157] [2020-02-10 23:28:39,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:39,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656726157] [2020-02-10 23:28:39,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:39,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:39,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440456086] [2020-02-10 23:28:39,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:39,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:39,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:39,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:39,855 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:39,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 26 transitions. Second operand 6 states. [2020-02-10 23:28:39,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:39,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:39,855 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:39,946 INFO L129 PetriNetUnfolder]: 3/116 cut-off events. [2020-02-10 23:28:39,946 INFO L130 PetriNetUnfolder]: For 1303/1323 co-relation queries the response was YES. [2020-02-10 23:28:39,948 INFO L76 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 116 events. 3/116 cut-off events. For 1303/1323 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 739 event pairs. 1/110 useless extension candidates. Maximal degree in co-relation 569. Up to 30 conditions per place. [2020-02-10 23:28:39,951 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 14 selfloop transitions, 6 changer transitions 1/29 dead transitions. [2020-02-10 23:28:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:39,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:28:39,953 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:28:39,954 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:28:39,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:28:39,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:39,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:28:39,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:39,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:39,957 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:39,957 INFO L178 Difference]: Start difference. First operand has 77 places, 26 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:28:39,958 INFO L206 Difference]: Finished difference. Result has 84 places, 26 transitions [2020-02-10 23:28:39,958 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=84, PETRI_TRANSITIONS=26} [2020-02-10 23:28:39,958 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 84 places, 26 transitions [2020-02-10 23:28:39,981 INFO L129 PetriNetUnfolder]: 0/103 cut-off events. [2020-02-10 23:28:39,981 INFO L130 PetriNetUnfolder]: For 1289/1289 co-relation queries the response was YES. [2020-02-10 23:28:39,983 INFO L76 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 103 events. 0/103 cut-off events. For 1289/1289 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 666 event pairs. 0/95 useless extension candidates. Maximal degree in co-relation 502. Up to 14 conditions per place. [2020-02-10 23:28:39,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 26 transitions [2020-02-10 23:28:39,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 26 transitions [2020-02-10 23:28:39,987 INFO L479 AbstractCegarLoop]: Abstraction has has 83 places, 26 transitions [2020-02-10 23:28:39,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:40,015 INFO L129 PetriNetUnfolder]: 0/91 cut-off events. [2020-02-10 23:28:40,016 INFO L130 PetriNetUnfolder]: For 1289/1289 co-relation queries the response was YES. [2020-02-10 23:28:40,016 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:40,016 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:40,017 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:40,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:40,017 INFO L82 PathProgramCache]: Analyzing trace with hash 145943343, now seen corresponding path program 8 times [2020-02-10 23:28:40,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:40,018 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089286788] [2020-02-10 23:28:40,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:40,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089286788] [2020-02-10 23:28:40,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:40,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:40,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958077929] [2020-02-10 23:28:40,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:40,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:40,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:40,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:40,159 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:40,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 26 transitions. Second operand 6 states. [2020-02-10 23:28:40,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:40,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:40,159 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:40,242 INFO L129 PetriNetUnfolder]: 3/109 cut-off events. [2020-02-10 23:28:40,243 INFO L130 PetriNetUnfolder]: For 1501/1521 co-relation queries the response was YES. [2020-02-10 23:28:40,245 INFO L76 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 109 events. 3/109 cut-off events. For 1501/1521 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 673 event pairs. 1/104 useless extension candidates. Maximal degree in co-relation 576. Up to 26 conditions per place. [2020-02-10 23:28:40,249 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 15 selfloop transitions, 7 changer transitions 1/31 dead transitions. [2020-02-10 23:28:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:40,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:28:40,250 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:28:40,251 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:28:40,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:28:40,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:40,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:28:40,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:40,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:40,253 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:40,253 INFO L178 Difference]: Start difference. First operand has 83 places, 26 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:28:40,253 INFO L206 Difference]: Finished difference. Result has 90 places, 26 transitions [2020-02-10 23:28:40,254 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=349, PETRI_PLACES=90, PETRI_TRANSITIONS=26} [2020-02-10 23:28:40,254 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 90 places, 26 transitions [2020-02-10 23:28:40,282 INFO L129 PetriNetUnfolder]: 0/97 cut-off events. [2020-02-10 23:28:40,282 INFO L130 PetriNetUnfolder]: For 1501/1501 co-relation queries the response was YES. [2020-02-10 23:28:40,283 INFO L76 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 97 events. 0/97 cut-off events. For 1501/1501 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 591 event pairs. 0/89 useless extension candidates. Maximal degree in co-relation 517. Up to 13 conditions per place. [2020-02-10 23:28:40,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 26 transitions [2020-02-10 23:28:40,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 26 transitions [2020-02-10 23:28:40,287 INFO L479 AbstractCegarLoop]: Abstraction has has 88 places, 26 transitions [2020-02-10 23:28:40,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:40,306 INFO L129 PetriNetUnfolder]: 0/86 cut-off events. [2020-02-10 23:28:40,307 INFO L130 PetriNetUnfolder]: For 1501/1501 co-relation queries the response was YES. [2020-02-10 23:28:40,307 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:40,307 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:40,307 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:40,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:40,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1139543661, now seen corresponding path program 9 times [2020-02-10 23:28:40,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:40,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575652390] [2020-02-10 23:28:40,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:40,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575652390] [2020-02-10 23:28:40,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:40,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:40,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963518898] [2020-02-10 23:28:40,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:40,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:40,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:40,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:40,438 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:40,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 26 transitions. Second operand 6 states. [2020-02-10 23:28:40,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:40,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:40,439 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:40,531 INFO L129 PetriNetUnfolder]: 3/103 cut-off events. [2020-02-10 23:28:40,532 INFO L130 PetriNetUnfolder]: For 1736/1748 co-relation queries the response was YES. [2020-02-10 23:28:40,533 INFO L76 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 103 events. 3/103 cut-off events. For 1736/1748 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 624 event pairs. 1/100 useless extension candidates. Maximal degree in co-relation 590. Up to 22 conditions per place. [2020-02-10 23:28:40,536 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 14 selfloop transitions, 11 changer transitions 3/36 dead transitions. [2020-02-10 23:28:40,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:28:40,538 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:28:40,538 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:28:40,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:28:40,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:40,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:28:40,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:40,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:40,540 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:40,540 INFO L178 Difference]: Start difference. First operand has 88 places, 26 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:28:40,544 INFO L206 Difference]: Finished difference. Result has 96 places, 28 transitions [2020-02-10 23:28:40,544 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=429, PETRI_PLACES=96, PETRI_TRANSITIONS=28} [2020-02-10 23:28:40,544 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 96 places, 28 transitions [2020-02-10 23:28:40,566 INFO L129 PetriNetUnfolder]: 0/90 cut-off events. [2020-02-10 23:28:40,566 INFO L130 PetriNetUnfolder]: For 1607/1609 co-relation queries the response was YES. [2020-02-10 23:28:40,568 INFO L76 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 90 events. 0/90 cut-off events. For 1607/1609 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 534 event pairs. 0/83 useless extension candidates. Maximal degree in co-relation 526. Up to 12 conditions per place. [2020-02-10 23:28:40,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 28 transitions [2020-02-10 23:28:40,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 28 transitions [2020-02-10 23:28:40,571 INFO L479 AbstractCegarLoop]: Abstraction has has 92 places, 28 transitions [2020-02-10 23:28:40,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:40,600 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2020-02-10 23:28:40,600 INFO L130 PetriNetUnfolder]: For 1604/1606 co-relation queries the response was YES. [2020-02-10 23:28:40,600 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:40,600 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:40,600 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:40,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:40,601 INFO L82 PathProgramCache]: Analyzing trace with hash -736478475, now seen corresponding path program 10 times [2020-02-10 23:28:40,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:40,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125210213] [2020-02-10 23:28:40,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:40,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125210213] [2020-02-10 23:28:40,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:40,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:40,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65555119] [2020-02-10 23:28:40,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:40,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:40,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:40,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:40,733 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:40,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 28 transitions. Second operand 6 states. [2020-02-10 23:28:40,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:40,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:40,734 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:40,810 INFO L129 PetriNetUnfolder]: 3/96 cut-off events. [2020-02-10 23:28:40,811 INFO L130 PetriNetUnfolder]: For 1975/1999 co-relation queries the response was YES. [2020-02-10 23:28:40,812 INFO L76 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 96 events. 3/96 cut-off events. For 1975/1999 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 555 event pairs. 3/96 useless extension candidates. Maximal degree in co-relation 588. Up to 24 conditions per place. [2020-02-10 23:28:40,815 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 10 changer transitions 2/36 dead transitions. [2020-02-10 23:28:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:28:40,817 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:28:40,817 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:28:40,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:28:40,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:40,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:28:40,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:40,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:40,819 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:40,819 INFO L178 Difference]: Start difference. First operand has 92 places, 28 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:28:40,820 INFO L206 Difference]: Finished difference. Result has 100 places, 30 transitions [2020-02-10 23:28:40,821 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=507, PETRI_PLACES=100, PETRI_TRANSITIONS=30} [2020-02-10 23:28:40,821 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 100 places, 30 transitions [2020-02-10 23:28:40,841 INFO L129 PetriNetUnfolder]: 0/81 cut-off events. [2020-02-10 23:28:40,841 INFO L130 PetriNetUnfolder]: For 1862/1866 co-relation queries the response was YES. [2020-02-10 23:28:40,843 INFO L76 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 81 events. 0/81 cut-off events. For 1862/1866 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 446 event pairs. 0/75 useless extension candidates. Maximal degree in co-relation 515. Up to 11 conditions per place. [2020-02-10 23:28:40,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 30 transitions [2020-02-10 23:28:40,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 30 transitions [2020-02-10 23:28:40,845 INFO L479 AbstractCegarLoop]: Abstraction has has 99 places, 30 transitions [2020-02-10 23:28:40,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:40,862 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2020-02-10 23:28:40,863 INFO L130 PetriNetUnfolder]: For 1842/1844 co-relation queries the response was YES. [2020-02-10 23:28:40,863 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:40,863 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:40,863 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:40,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:40,863 INFO L82 PathProgramCache]: Analyzing trace with hash -289616339, now seen corresponding path program 11 times [2020-02-10 23:28:40,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:40,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464311316] [2020-02-10 23:28:40,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:40,975 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464311316] [2020-02-10 23:28:40,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:40,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:40,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735266745] [2020-02-10 23:28:40,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:40,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:40,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:40,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:40,977 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:40,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 30 transitions. Second operand 6 states. [2020-02-10 23:28:40,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:40,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:40,978 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:41,079 INFO L129 PetriNetUnfolder]: 1/106 cut-off events. [2020-02-10 23:28:41,079 INFO L130 PetriNetUnfolder]: For 2936/2993 co-relation queries the response was YES. [2020-02-10 23:28:41,081 INFO L76 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 106 events. 1/106 cut-off events. For 2936/2993 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 677 event pairs. 6/108 useless extension candidates. Maximal degree in co-relation 704. Up to 28 conditions per place. [2020-02-10 23:28:41,084 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 14 changer transitions 1/39 dead transitions. [2020-02-10 23:28:41,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:28:41,086 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:28:41,087 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:28:41,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:28:41,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:41,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:28:41,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:41,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:41,088 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:41,089 INFO L178 Difference]: Start difference. First operand has 99 places, 30 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:28:41,089 INFO L206 Difference]: Finished difference. Result has 108 places, 35 transitions [2020-02-10 23:28:41,090 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=108, PETRI_TRANSITIONS=35} [2020-02-10 23:28:41,091 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 108 places, 35 transitions [2020-02-10 23:28:41,117 INFO L129 PetriNetUnfolder]: 0/101 cut-off events. [2020-02-10 23:28:41,117 INFO L130 PetriNetUnfolder]: For 2795/2797 co-relation queries the response was YES. [2020-02-10 23:28:41,119 INFO L76 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 101 events. 0/101 cut-off events. For 2795/2797 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 643 event pairs. 0/95 useless extension candidates. Maximal degree in co-relation 674. Up to 14 conditions per place. [2020-02-10 23:28:41,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 35 transitions [2020-02-10 23:28:41,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 35 transitions [2020-02-10 23:28:41,123 INFO L479 AbstractCegarLoop]: Abstraction has has 108 places, 35 transitions [2020-02-10 23:28:41,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:41,149 INFO L129 PetriNetUnfolder]: 0/90 cut-off events. [2020-02-10 23:28:41,149 INFO L130 PetriNetUnfolder]: For 2795/2797 co-relation queries the response was YES. [2020-02-10 23:28:41,149 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:41,150 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:41,150 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:41,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:41,150 INFO L82 PathProgramCache]: Analyzing trace with hash 118828179, now seen corresponding path program 12 times [2020-02-10 23:28:41,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:41,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949858553] [2020-02-10 23:28:41,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:41,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949858553] [2020-02-10 23:28:41,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:41,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:41,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915597097] [2020-02-10 23:28:41,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:41,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:41,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:41,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:41,272 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:41,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 35 transitions. Second operand 6 states. [2020-02-10 23:28:41,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:41,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:41,272 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:41,378 INFO L129 PetriNetUnfolder]: 1/102 cut-off events. [2020-02-10 23:28:41,378 INFO L130 PetriNetUnfolder]: For 3398/3478 co-relation queries the response was YES. [2020-02-10 23:28:41,380 INFO L76 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 102 events. 1/102 cut-off events. For 3398/3478 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 633 event pairs. 6/103 useless extension candidates. Maximal degree in co-relation 728. Up to 24 conditions per place. [2020-02-10 23:28:41,383 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 17 selfloop transitions, 13 changer transitions 1/39 dead transitions. [2020-02-10 23:28:41,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:28:41,385 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:28:41,385 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:28:41,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:28:41,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:41,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:28:41,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:41,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:41,387 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:41,387 INFO L178 Difference]: Start difference. First operand has 108 places, 35 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:28:41,388 INFO L206 Difference]: Finished difference. Result has 114 places, 34 transitions [2020-02-10 23:28:41,388 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=687, PETRI_PLACES=114, PETRI_TRANSITIONS=34} [2020-02-10 23:28:41,389 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 114 places, 34 transitions [2020-02-10 23:28:41,413 INFO L129 PetriNetUnfolder]: 0/95 cut-off events. [2020-02-10 23:28:41,413 INFO L130 PetriNetUnfolder]: For 2981/2983 co-relation queries the response was YES. [2020-02-10 23:28:41,415 INFO L76 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 95 events. 0/95 cut-off events. For 2981/2983 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 593 event pairs. 0/89 useless extension candidates. Maximal degree in co-relation 673. Up to 14 conditions per place. [2020-02-10 23:28:41,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 34 transitions [2020-02-10 23:28:41,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 34 transitions [2020-02-10 23:28:41,418 INFO L479 AbstractCegarLoop]: Abstraction has has 112 places, 34 transitions [2020-02-10 23:28:41,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:41,439 INFO L129 PetriNetUnfolder]: 0/85 cut-off events. [2020-02-10 23:28:41,439 INFO L130 PetriNetUnfolder]: For 2981/2983 co-relation queries the response was YES. [2020-02-10 23:28:41,439 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:41,440 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:41,440 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:41,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:41,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1284569227, now seen corresponding path program 13 times [2020-02-10 23:28:41,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:41,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132264641] [2020-02-10 23:28:41,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:41,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:41,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132264641] [2020-02-10 23:28:41,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:41,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:41,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929902052] [2020-02-10 23:28:41,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:41,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:41,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:41,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:41,564 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:41,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 34 transitions. Second operand 6 states. [2020-02-10 23:28:41,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:41,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:41,564 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:41,651 INFO L129 PetriNetUnfolder]: 1/97 cut-off events. [2020-02-10 23:28:41,652 INFO L130 PetriNetUnfolder]: For 3597/3650 co-relation queries the response was YES. [2020-02-10 23:28:41,653 INFO L76 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 97 events. 1/97 cut-off events. For 3597/3650 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 593 event pairs. 6/97 useless extension candidates. Maximal degree in co-relation 727. Up to 23 conditions per place. [2020-02-10 23:28:41,657 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 15 selfloop transitions, 12 changer transitions 1/36 dead transitions. [2020-02-10 23:28:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2020-02-10 23:28:41,658 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2020-02-10 23:28:41,658 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2020-02-10 23:28:41,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2020-02-10 23:28:41,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:41,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2020-02-10 23:28:41,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:41,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:41,661 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:41,661 INFO L178 Difference]: Start difference. First operand has 112 places, 34 transitions. Second operand 6 states and 188 transitions. [2020-02-10 23:28:41,661 INFO L206 Difference]: Finished difference. Result has 118 places, 33 transitions [2020-02-10 23:28:41,662 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=689, PETRI_PLACES=118, PETRI_TRANSITIONS=33} [2020-02-10 23:28:41,662 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 118 places, 33 transitions [2020-02-10 23:28:41,691 INFO L129 PetriNetUnfolder]: 0/89 cut-off events. [2020-02-10 23:28:41,691 INFO L130 PetriNetUnfolder]: For 3163/3165 co-relation queries the response was YES. [2020-02-10 23:28:41,693 INFO L76 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 89 events. 0/89 cut-off events. For 3163/3165 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 545 event pairs. 0/83 useless extension candidates. Maximal degree in co-relation 671. Up to 14 conditions per place. [2020-02-10 23:28:41,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 33 transitions [2020-02-10 23:28:41,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 33 transitions [2020-02-10 23:28:41,697 INFO L479 AbstractCegarLoop]: Abstraction has has 116 places, 33 transitions [2020-02-10 23:28:41,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:41,722 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2020-02-10 23:28:41,723 INFO L130 PetriNetUnfolder]: For 3163/3165 co-relation queries the response was YES. [2020-02-10 23:28:41,723 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:41,723 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:41,723 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:41,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:41,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1864287049, now seen corresponding path program 14 times [2020-02-10 23:28:41,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:41,724 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167384009] [2020-02-10 23:28:41,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:41,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167384009] [2020-02-10 23:28:41,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:41,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:41,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827699022] [2020-02-10 23:28:41,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:41,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:41,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:41,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:41,829 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:41,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 33 transitions. Second operand 6 states. [2020-02-10 23:28:41,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:41,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:41,830 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:41,943 INFO L129 PetriNetUnfolder]: 1/91 cut-off events. [2020-02-10 23:28:41,944 INFO L130 PetriNetUnfolder]: For 3651/3692 co-relation queries the response was YES. [2020-02-10 23:28:41,945 INFO L76 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 91 events. 1/91 cut-off events. For 3651/3692 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 557 event pairs. 4/89 useless extension candidates. Maximal degree in co-relation 722. Up to 21 conditions per place. [2020-02-10 23:28:41,949 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 11 changer transitions 2/34 dead transitions. [2020-02-10 23:28:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2020-02-10 23:28:41,950 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2020-02-10 23:28:41,951 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2020-02-10 23:28:41,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2020-02-10 23:28:41,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:41,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2020-02-10 23:28:41,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:41,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:41,953 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:41,953 INFO L178 Difference]: Start difference. First operand has 116 places, 33 transitions. Second operand 6 states and 187 transitions. [2020-02-10 23:28:41,953 INFO L206 Difference]: Finished difference. Result has 122 places, 31 transitions [2020-02-10 23:28:41,954 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=659, PETRI_PLACES=122, PETRI_TRANSITIONS=31} [2020-02-10 23:28:41,954 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 122 places, 31 transitions [2020-02-10 23:28:41,981 INFO L129 PetriNetUnfolder]: 0/82 cut-off events. [2020-02-10 23:28:41,981 INFO L130 PetriNetUnfolder]: For 3235/3237 co-relation queries the response was YES. [2020-02-10 23:28:41,983 INFO L76 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 82 events. 0/82 cut-off events. For 3235/3237 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 479 event pairs. 0/76 useless extension candidates. Maximal degree in co-relation 651. Up to 14 conditions per place. [2020-02-10 23:28:41,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 31 transitions [2020-02-10 23:28:41,985 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 31 transitions [2020-02-10 23:28:41,986 INFO L479 AbstractCegarLoop]: Abstraction has has 117 places, 31 transitions [2020-02-10 23:28:41,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:42,007 INFO L129 PetriNetUnfolder]: 0/74 cut-off events. [2020-02-10 23:28:42,008 INFO L130 PetriNetUnfolder]: For 3298/3307 co-relation queries the response was YES. [2020-02-10 23:28:42,008 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:42,008 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:42,008 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:42,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:42,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1804782191, now seen corresponding path program 15 times [2020-02-10 23:28:42,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:42,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35718548] [2020-02-10 23:28:42,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:42,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35718548] [2020-02-10 23:28:42,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:42,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:42,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329674709] [2020-02-10 23:28:42,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:42,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:42,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:42,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:42,106 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:42,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 31 transitions. Second operand 6 states. [2020-02-10 23:28:42,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:42,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:42,107 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:42,202 INFO L129 PetriNetUnfolder]: 1/84 cut-off events. [2020-02-10 23:28:42,202 INFO L130 PetriNetUnfolder]: For 3730/3771 co-relation queries the response was YES. [2020-02-10 23:28:42,204 INFO L76 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 84 events. 1/84 cut-off events. For 3730/3771 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 492 event pairs. 2/84 useless extension candidates. Maximal degree in co-relation 698. Up to 16 conditions per place. [2020-02-10 23:28:42,207 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 15 changer transitions 11/47 dead transitions. [2020-02-10 23:28:42,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:42,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2020-02-10 23:28:42,209 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2020-02-10 23:28:42,209 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2020-02-10 23:28:42,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2020-02-10 23:28:42,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:42,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2020-02-10 23:28:42,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:42,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:42,211 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:42,211 INFO L178 Difference]: Start difference. First operand has 117 places, 31 transitions. Second operand 6 states and 187 transitions. [2020-02-10 23:28:42,212 INFO L206 Difference]: Finished difference. Result has 123 places, 31 transitions [2020-02-10 23:28:42,212 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=692, PETRI_PLACES=123, PETRI_TRANSITIONS=31} [2020-02-10 23:28:42,212 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 123 places, 31 transitions [2020-02-10 23:28:42,232 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2020-02-10 23:28:42,232 INFO L130 PetriNetUnfolder]: For 2619/2630 co-relation queries the response was YES. [2020-02-10 23:28:42,233 INFO L76 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 70 events. 0/70 cut-off events. For 2619/2630 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 365 event pairs. 1/67 useless extension candidates. Maximal degree in co-relation 510. Up to 11 conditions per place. [2020-02-10 23:28:42,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 31 transitions [2020-02-10 23:28:42,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 31 transitions [2020-02-10 23:28:42,236 INFO L479 AbstractCegarLoop]: Abstraction has has 123 places, 31 transitions [2020-02-10 23:28:42,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:42,253 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2020-02-10 23:28:42,253 INFO L130 PetriNetUnfolder]: For 2619/2630 co-relation queries the response was YES. [2020-02-10 23:28:42,253 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:42,253 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:42,253 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:42,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:42,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1749449427, now seen corresponding path program 16 times [2020-02-10 23:28:42,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:42,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531003031] [2020-02-10 23:28:42,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:42,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531003031] [2020-02-10 23:28:42,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:42,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:42,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461121993] [2020-02-10 23:28:42,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:42,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:42,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:42,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:42,348 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:42,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 31 transitions. Second operand 6 states. [2020-02-10 23:28:42,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:42,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:42,348 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:42,448 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2020-02-10 23:28:42,448 INFO L130 PetriNetUnfolder]: For 2942/2988 co-relation queries the response was YES. [2020-02-10 23:28:42,450 INFO L76 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 72 events. 1/72 cut-off events. For 2942/2988 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 383 event pairs. 5/76 useless extension candidates. Maximal degree in co-relation 545. Up to 16 conditions per place. [2020-02-10 23:28:42,453 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 18 selfloop transitions, 12 changer transitions 0/38 dead transitions. [2020-02-10 23:28:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:42,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:42,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2020-02-10 23:28:42,454 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2020-02-10 23:28:42,454 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2020-02-10 23:28:42,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2020-02-10 23:28:42,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:42,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2020-02-10 23:28:42,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:42,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:42,456 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:42,457 INFO L178 Difference]: Start difference. First operand has 123 places, 31 transitions. Second operand 6 states and 187 transitions. [2020-02-10 23:28:42,457 INFO L206 Difference]: Finished difference. Result has 130 places, 33 transitions [2020-02-10 23:28:42,458 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=771, PETRI_PLACES=130, PETRI_TRANSITIONS=33} [2020-02-10 23:28:42,458 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 130 places, 33 transitions [2020-02-10 23:28:42,478 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2020-02-10 23:28:42,478 INFO L130 PetriNetUnfolder]: For 2857/2868 co-relation queries the response was YES. [2020-02-10 23:28:42,480 INFO L76 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 69 events. 0/69 cut-off events. For 2857/2868 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 359 event pairs. 0/68 useless extension candidates. Maximal degree in co-relation 520. Up to 11 conditions per place. [2020-02-10 23:28:42,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 33 transitions [2020-02-10 23:28:42,482 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 33 transitions [2020-02-10 23:28:42,482 INFO L479 AbstractCegarLoop]: Abstraction has has 130 places, 33 transitions [2020-02-10 23:28:42,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:42,499 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2020-02-10 23:28:42,500 INFO L130 PetriNetUnfolder]: For 2857/2868 co-relation queries the response was YES. [2020-02-10 23:28:42,500 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:42,500 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:42,500 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:42,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1173747979, now seen corresponding path program 17 times [2020-02-10 23:28:42,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:42,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951616601] [2020-02-10 23:28:42,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:42,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951616601] [2020-02-10 23:28:42,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:42,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:42,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99279980] [2020-02-10 23:28:42,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:42,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:42,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:42,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:42,619 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:42,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 33 transitions. Second operand 6 states. [2020-02-10 23:28:42,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:42,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:42,620 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:42,790 INFO L129 PetriNetUnfolder]: 1/71 cut-off events. [2020-02-10 23:28:42,791 INFO L130 PetriNetUnfolder]: For 3079/3114 co-relation queries the response was YES. [2020-02-10 23:28:42,793 INFO L76 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 71 events. 1/71 cut-off events. For 3079/3114 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 379 event pairs. 5/75 useless extension candidates. Maximal degree in co-relation 554. Up to 15 conditions per place. [2020-02-10 23:28:42,797 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 11 selfloop transitions, 16 changer transitions 0/35 dead transitions. [2020-02-10 23:28:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:42,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2020-02-10 23:28:42,801 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7905982905982906 [2020-02-10 23:28:42,802 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 185 transitions. [2020-02-10 23:28:42,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 185 transitions. [2020-02-10 23:28:42,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:42,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 185 transitions. [2020-02-10 23:28:42,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:42,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:42,805 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:42,805 INFO L178 Difference]: Start difference. First operand has 130 places, 33 transitions. Second operand 6 states and 185 transitions. [2020-02-10 23:28:42,809 INFO L206 Difference]: Finished difference. Result has 136 places, 33 transitions [2020-02-10 23:28:42,809 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=806, PETRI_PLACES=136, PETRI_TRANSITIONS=33} [2020-02-10 23:28:42,810 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 136 places, 33 transitions [2020-02-10 23:28:42,844 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2020-02-10 23:28:42,845 INFO L130 PetriNetUnfolder]: For 2965/2976 co-relation queries the response was YES. [2020-02-10 23:28:42,847 INFO L76 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 68 events. 0/68 cut-off events. For 2965/2976 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 363 event pairs. 0/66 useless extension candidates. Maximal degree in co-relation 525. Up to 11 conditions per place. [2020-02-10 23:28:42,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 33 transitions [2020-02-10 23:28:42,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 33 transitions [2020-02-10 23:28:42,850 INFO L479 AbstractCegarLoop]: Abstraction has has 136 places, 33 transitions [2020-02-10 23:28:42,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:42,877 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2020-02-10 23:28:42,878 INFO L130 PetriNetUnfolder]: For 2965/2976 co-relation queries the response was YES. [2020-02-10 23:28:42,878 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:42,878 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:42,878 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:42,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:42,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1412412451, now seen corresponding path program 18 times [2020-02-10 23:28:42,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:42,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636206920] [2020-02-10 23:28:42,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:43,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636206920] [2020-02-10 23:28:43,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:43,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:43,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54043943] [2020-02-10 23:28:43,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:43,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:43,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:43,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:43,049 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:43,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 33 transitions. Second operand 6 states. [2020-02-10 23:28:43,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:43,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:43,050 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:43,175 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2020-02-10 23:28:43,176 INFO L130 PetriNetUnfolder]: For 3186/3225 co-relation queries the response was YES. [2020-02-10 23:28:43,178 INFO L76 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 69 events. 1/69 cut-off events. For 3186/3225 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 358 event pairs. 3/71 useless extension candidates. Maximal degree in co-relation 556. Up to 16 conditions per place. [2020-02-10 23:28:43,183 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 11 changer transitions 1/36 dead transitions. [2020-02-10 23:28:43,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2020-02-10 23:28:43,185 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2020-02-10 23:28:43,185 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2020-02-10 23:28:43,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2020-02-10 23:28:43,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:43,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2020-02-10 23:28:43,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:43,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:43,191 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:43,191 INFO L178 Difference]: Start difference. First operand has 136 places, 33 transitions. Second operand 6 states and 187 transitions. [2020-02-10 23:28:43,192 INFO L206 Difference]: Finished difference. Result has 143 places, 33 transitions [2020-02-10 23:28:43,193 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=815, PETRI_PLACES=143, PETRI_TRANSITIONS=33} [2020-02-10 23:28:43,193 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 143 places, 33 transitions [2020-02-10 23:28:43,228 INFO L129 PetriNetUnfolder]: 0/65 cut-off events. [2020-02-10 23:28:43,228 INFO L130 PetriNetUnfolder]: For 2941/2952 co-relation queries the response was YES. [2020-02-10 23:28:43,230 INFO L76 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 65 events. 0/65 cut-off events. For 2941/2952 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 345 event pairs. 0/63 useless extension candidates. Maximal degree in co-relation 504. Up to 11 conditions per place. [2020-02-10 23:28:43,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 33 transitions [2020-02-10 23:28:43,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 33 transitions [2020-02-10 23:28:43,234 INFO L479 AbstractCegarLoop]: Abstraction has has 142 places, 33 transitions [2020-02-10 23:28:43,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:43,265 INFO L129 PetriNetUnfolder]: 0/61 cut-off events. [2020-02-10 23:28:43,265 INFO L130 PetriNetUnfolder]: For 2941/2952 co-relation queries the response was YES. [2020-02-10 23:28:43,266 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:43,266 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:43,266 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:43,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:43,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1173225985, now seen corresponding path program 19 times [2020-02-10 23:28:43,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:43,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620091179] [2020-02-10 23:28:43,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:43,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:43,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620091179] [2020-02-10 23:28:43,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:43,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:43,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361387604] [2020-02-10 23:28:43,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:43,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:43,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:43,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:43,412 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:43,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 33 transitions. Second operand 6 states. [2020-02-10 23:28:43,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:43,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:43,413 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:43,504 INFO L129 PetriNetUnfolder]: 0/78 cut-off events. [2020-02-10 23:28:43,505 INFO L130 PetriNetUnfolder]: For 4140/4212 co-relation queries the response was YES. [2020-02-10 23:28:43,506 INFO L76 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 78 events. 0/78 cut-off events. For 4140/4212 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 450 event pairs. 9/85 useless extension candidates. Maximal degree in co-relation 654. Up to 16 conditions per place. [2020-02-10 23:28:43,509 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 19 selfloop transitions, 14 changer transitions 0/41 dead transitions. [2020-02-10 23:28:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2020-02-10 23:28:43,511 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2020-02-10 23:28:43,511 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2020-02-10 23:28:43,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2020-02-10 23:28:43,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:43,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2020-02-10 23:28:43,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:43,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:43,513 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:43,513 INFO L178 Difference]: Start difference. First operand has 142 places, 33 transitions. Second operand 6 states and 187 transitions. [2020-02-10 23:28:43,514 INFO L206 Difference]: Finished difference. Result has 151 places, 38 transitions [2020-02-10 23:28:43,514 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1033, PETRI_PLACES=151, PETRI_TRANSITIONS=38} [2020-02-10 23:28:43,515 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 151 places, 38 transitions [2020-02-10 23:28:43,539 INFO L129 PetriNetUnfolder]: 0/78 cut-off events. [2020-02-10 23:28:43,540 INFO L130 PetriNetUnfolder]: For 4001/4010 co-relation queries the response was YES. [2020-02-10 23:28:43,541 INFO L76 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 78 events. 0/78 cut-off events. For 4001/4010 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 438 event pairs. 1/76 useless extension candidates. Maximal degree in co-relation 654. Up to 13 conditions per place. [2020-02-10 23:28:43,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 38 transitions [2020-02-10 23:28:43,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 38 transitions [2020-02-10 23:28:43,545 INFO L479 AbstractCegarLoop]: Abstraction has has 151 places, 38 transitions [2020-02-10 23:28:43,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:43,570 INFO L129 PetriNetUnfolder]: 0/73 cut-off events. [2020-02-10 23:28:43,571 INFO L130 PetriNetUnfolder]: For 4092/4120 co-relation queries the response was YES. [2020-02-10 23:28:43,571 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:43,571 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:43,571 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:43,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:43,572 INFO L82 PathProgramCache]: Analyzing trace with hash 557105797, now seen corresponding path program 20 times [2020-02-10 23:28:43,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:43,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608968936] [2020-02-10 23:28:43,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:43,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608968936] [2020-02-10 23:28:43,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:43,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:43,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803366092] [2020-02-10 23:28:43,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:43,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:43,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:43,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:43,708 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:43,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 38 transitions. Second operand 6 states. [2020-02-10 23:28:43,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:43,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:43,709 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:43,827 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2020-02-10 23:28:43,828 INFO L130 PetriNetUnfolder]: For 4242/4281 co-relation queries the response was YES. [2020-02-10 23:28:43,829 INFO L76 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 77 events. 0/77 cut-off events. For 4242/4281 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 437 event pairs. 3/79 useless extension candidates. Maximal degree in co-relation 670. Up to 20 conditions per place. [2020-02-10 23:28:43,833 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 19 selfloop transitions, 14 changer transitions 0/41 dead transitions. [2020-02-10 23:28:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2020-02-10 23:28:43,834 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2020-02-10 23:28:43,834 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2020-02-10 23:28:43,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2020-02-10 23:28:43,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:43,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2020-02-10 23:28:43,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:43,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:43,836 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:43,836 INFO L178 Difference]: Start difference. First operand has 151 places, 38 transitions. Second operand 6 states and 187 transitions. [2020-02-10 23:28:43,837 INFO L206 Difference]: Finished difference. Result has 158 places, 39 transitions [2020-02-10 23:28:43,837 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1097, PETRI_PLACES=158, PETRI_TRANSITIONS=39} [2020-02-10 23:28:43,838 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 158 places, 39 transitions [2020-02-10 23:28:43,865 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2020-02-10 23:28:43,865 INFO L130 PetriNetUnfolder]: For 4394/4424 co-relation queries the response was YES. [2020-02-10 23:28:43,867 INFO L76 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 77 events. 0/77 cut-off events. For 4394/4424 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 435 event pairs. 0/72 useless extension candidates. Maximal degree in co-relation 657. Up to 13 conditions per place. [2020-02-10 23:28:43,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 39 transitions [2020-02-10 23:28:43,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 39 transitions [2020-02-10 23:28:43,870 INFO L479 AbstractCegarLoop]: Abstraction has has 158 places, 39 transitions [2020-02-10 23:28:43,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:43,895 INFO L129 PetriNetUnfolder]: 0/73 cut-off events. [2020-02-10 23:28:43,895 INFO L130 PetriNetUnfolder]: For 4435/4470 co-relation queries the response was YES. [2020-02-10 23:28:43,895 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:43,896 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:43,896 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:43,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:43,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1444810327, now seen corresponding path program 21 times [2020-02-10 23:28:43,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:43,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818699282] [2020-02-10 23:28:43,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:43,990 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818699282] [2020-02-10 23:28:43,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:43,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:43,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143428940] [2020-02-10 23:28:43,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:43,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:43,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:43,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:43,992 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:43,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 39 transitions. Second operand 6 states. [2020-02-10 23:28:43,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:43,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:43,992 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:44,086 INFO L129 PetriNetUnfolder]: 0/76 cut-off events. [2020-02-10 23:28:44,086 INFO L130 PetriNetUnfolder]: For 4683/4756 co-relation queries the response was YES. [2020-02-10 23:28:44,088 INFO L76 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 76 events. 0/76 cut-off events. For 4683/4756 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 430 event pairs. 7/81 useless extension candidates. Maximal degree in co-relation 671. Up to 20 conditions per place. [2020-02-10 23:28:44,091 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 18 selfloop transitions, 11 changer transitions 3/40 dead transitions. [2020-02-10 23:28:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:44,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:44,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2020-02-10 23:28:44,092 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2020-02-10 23:28:44,092 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 186 transitions. [2020-02-10 23:28:44,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 186 transitions. [2020-02-10 23:28:44,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:44,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 186 transitions. [2020-02-10 23:28:44,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:44,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:44,094 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:44,094 INFO L178 Difference]: Start difference. First operand has 158 places, 39 transitions. Second operand 6 states and 186 transitions. [2020-02-10 23:28:44,095 INFO L206 Difference]: Finished difference. Result has 165 places, 37 transitions [2020-02-10 23:28:44,095 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1034, PETRI_PLACES=165, PETRI_TRANSITIONS=37} [2020-02-10 23:28:44,095 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 165 places, 37 transitions [2020-02-10 23:28:44,119 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2020-02-10 23:28:44,119 INFO L130 PetriNetUnfolder]: For 4162/4198 co-relation queries the response was YES. [2020-02-10 23:28:44,121 INFO L76 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 70 events. 0/70 cut-off events. For 4162/4198 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 367 event pairs. 0/68 useless extension candidates. Maximal degree in co-relation 589. Up to 12 conditions per place. [2020-02-10 23:28:44,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 37 transitions [2020-02-10 23:28:44,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 37 transitions [2020-02-10 23:28:44,124 INFO L479 AbstractCegarLoop]: Abstraction has has 162 places, 37 transitions [2020-02-10 23:28:44,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:44,148 INFO L129 PetriNetUnfolder]: 0/67 cut-off events. [2020-02-10 23:28:44,148 INFO L130 PetriNetUnfolder]: For 4162/4198 co-relation queries the response was YES. [2020-02-10 23:28:44,148 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:44,148 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:44,148 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:44,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:44,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1469997957, now seen corresponding path program 22 times [2020-02-10 23:28:44,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:44,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584603019] [2020-02-10 23:28:44,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:44,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:44,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584603019] [2020-02-10 23:28:44,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:44,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:44,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013281926] [2020-02-10 23:28:44,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:44,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:44,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:44,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:44,247 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:44,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 37 transitions. Second operand 6 states. [2020-02-10 23:28:44,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:44,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:44,247 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:44,353 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2020-02-10 23:28:44,353 INFO L130 PetriNetUnfolder]: For 4210/4255 co-relation queries the response was YES. [2020-02-10 23:28:44,355 INFO L76 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 69 events. 0/69 cut-off events. For 4210/4255 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 363 event pairs. 9/77 useless extension candidates. Maximal degree in co-relation 598. Up to 12 conditions per place. [2020-02-10 23:28:44,358 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 16 changer transitions 0/37 dead transitions. [2020-02-10 23:28:44,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:44,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2020-02-10 23:28:44,360 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7905982905982906 [2020-02-10 23:28:44,360 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 185 transitions. [2020-02-10 23:28:44,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 185 transitions. [2020-02-10 23:28:44,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:44,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 185 transitions. [2020-02-10 23:28:44,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:44,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:44,362 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:44,362 INFO L178 Difference]: Start difference. First operand has 162 places, 37 transitions. Second operand 6 states and 185 transitions. [2020-02-10 23:28:44,363 INFO L206 Difference]: Finished difference. Result has 168 places, 37 transitions [2020-02-10 23:28:44,363 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1069, PETRI_PLACES=168, PETRI_TRANSITIONS=37} [2020-02-10 23:28:44,363 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 168 places, 37 transitions [2020-02-10 23:28:44,393 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2020-02-10 23:28:44,394 INFO L130 PetriNetUnfolder]: For 4169/4205 co-relation queries the response was YES. [2020-02-10 23:28:44,396 INFO L76 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 69 events. 0/69 cut-off events. For 4169/4205 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 368 event pairs. 0/67 useless extension candidates. Maximal degree in co-relation 586. Up to 12 conditions per place. [2020-02-10 23:28:44,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 37 transitions [2020-02-10 23:28:44,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 37 transitions [2020-02-10 23:28:44,399 INFO L479 AbstractCegarLoop]: Abstraction has has 168 places, 37 transitions [2020-02-10 23:28:44,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:44,435 INFO L129 PetriNetUnfolder]: 0/67 cut-off events. [2020-02-10 23:28:44,435 INFO L130 PetriNetUnfolder]: For 3870/3885 co-relation queries the response was YES. [2020-02-10 23:28:44,435 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:44,436 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:44,436 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:44,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:44,436 INFO L82 PathProgramCache]: Analyzing trace with hash 50261699, now seen corresponding path program 23 times [2020-02-10 23:28:44,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:44,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512248473] [2020-02-10 23:28:44,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:44,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512248473] [2020-02-10 23:28:44,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:44,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:44,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33519023] [2020-02-10 23:28:44,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:44,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:44,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:44,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:44,533 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:44,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 37 transitions. Second operand 6 states. [2020-02-10 23:28:44,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:44,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:44,533 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:44,625 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2020-02-10 23:28:44,625 INFO L130 PetriNetUnfolder]: For 4061/4100 co-relation queries the response was YES. [2020-02-10 23:28:44,627 INFO L76 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 68 events. 0/68 cut-off events. For 4061/4100 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 360 event pairs. 5/71 useless extension candidates. Maximal degree in co-relation 593. Up to 14 conditions per place. [2020-02-10 23:28:44,629 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 10 selfloop transitions, 9 changer transitions 11/38 dead transitions. [2020-02-10 23:28:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:44,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2020-02-10 23:28:44,631 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7905982905982906 [2020-02-10 23:28:44,631 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 185 transitions. [2020-02-10 23:28:44,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 185 transitions. [2020-02-10 23:28:44,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:44,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 185 transitions. [2020-02-10 23:28:44,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:44,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:44,633 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:44,633 INFO L178 Difference]: Start difference. First operand has 168 places, 37 transitions. Second operand 6 states and 185 transitions. [2020-02-10 23:28:44,633 INFO L206 Difference]: Finished difference. Result has 175 places, 27 transitions [2020-02-10 23:28:44,634 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=677, PETRI_PLACES=175, PETRI_TRANSITIONS=27} [2020-02-10 23:28:44,634 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 175 places, 27 transitions [2020-02-10 23:28:44,650 INFO L129 PetriNetUnfolder]: 0/44 cut-off events. [2020-02-10 23:28:44,651 INFO L130 PetriNetUnfolder]: For 2130/2136 co-relation queries the response was YES. [2020-02-10 23:28:44,652 INFO L76 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 44 events. 0/44 cut-off events. For 2130/2136 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 171 event pairs. 0/43 useless extension candidates. Maximal degree in co-relation 348. Up to 8 conditions per place. [2020-02-10 23:28:44,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 27 transitions [2020-02-10 23:28:44,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 27 transitions [2020-02-10 23:28:44,654 INFO L479 AbstractCegarLoop]: Abstraction has has 158 places, 27 transitions [2020-02-10 23:28:44,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:44,668 INFO L129 PetriNetUnfolder]: 0/43 cut-off events. [2020-02-10 23:28:44,668 INFO L130 PetriNetUnfolder]: For 2251/2259 co-relation queries the response was YES. [2020-02-10 23:28:44,668 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:44,668 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:44,668 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 23:28:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:44,669 INFO L82 PathProgramCache]: Analyzing trace with hash 794964197, now seen corresponding path program 24 times [2020-02-10 23:28:44,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:44,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254341793] [2020-02-10 23:28:44,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:44,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254341793] [2020-02-10 23:28:44,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:44,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-02-10 23:28:44,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680902057] [2020-02-10 23:28:44,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-02-10 23:28:44,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:44,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-02-10 23:28:44,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-02-10 23:28:44,759 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2020-02-10 23:28:44,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 27 transitions. Second operand 6 states. [2020-02-10 23:28:44,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:44,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2020-02-10 23:28:44,759 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:44,811 INFO L129 PetriNetUnfolder]: 0/43 cut-off events. [2020-02-10 23:28:44,811 INFO L130 PetriNetUnfolder]: For 2174/2179 co-relation queries the response was YES. [2020-02-10 23:28:44,812 INFO L76 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 43 events. 0/43 cut-off events. For 2174/2179 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 176 event pairs. 1/43 useless extension candidates. Maximal degree in co-relation 342. Up to 8 conditions per place. [2020-02-10 23:28:44,813 INFO L145 encePairwiseOnDemand]: 34/39 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2020-02-10 23:28:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-02-10 23:28:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-02-10 23:28:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2020-02-10 23:28:44,814 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2020-02-10 23:28:44,814 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 183 transitions. [2020-02-10 23:28:44,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 183 transitions. [2020-02-10 23:28:44,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:44,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 183 transitions. [2020-02-10 23:28:44,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-02-10 23:28:44,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-02-10 23:28:44,815 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-02-10 23:28:44,816 INFO L178 Difference]: Start difference. First operand has 158 places, 27 transitions. Second operand 6 states and 183 transitions. [2020-02-10 23:28:44,816 INFO L206 Difference]: Finished difference. Result has 163 places, 0 transitions [2020-02-10 23:28:44,816 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=163, PETRI_TRANSITIONS=0} [2020-02-10 23:28:44,816 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 163 places, 0 transitions [2020-02-10 23:28:44,818 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2020-02-10 23:28:44,818 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-02-10 23:28:44,818 INFO L76 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-02-10 23:28:44,818 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 0 transitions [2020-02-10 23:28:44,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions [2020-02-10 23:28:44,818 INFO L479 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions [2020-02-10 23:28:44,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-02-10 23:28:44,819 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2020-02-10 23:28:44,819 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-02-10 23:28:44,823 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:28:44 BasicIcfg [2020-02-10 23:28:44,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 23:28:44,825 INFO L168 Benchmark]: Toolchain (without parser) took 8357.19 ms. Allocated memory was 138.9 MB in the beginning and 329.3 MB in the end (delta: 190.3 MB). Free memory was 120.9 MB in the beginning and 184.6 MB in the end (delta: -63.7 MB). Peak memory consumption was 126.6 MB. Max. memory is 7.1 GB. [2020-02-10 23:28:44,826 INFO L168 Benchmark]: Boogie PL CUP Parser took 1.41 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-10 23:28:44,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.60 ms. Allocated memory is still 138.9 MB. Free memory was 120.7 MB in the beginning and 119.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-02-10 23:28:44,827 INFO L168 Benchmark]: Boogie Preprocessor took 22.75 ms. Allocated memory is still 138.9 MB. Free memory was 119.0 MB in the beginning and 117.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-02-10 23:28:44,828 INFO L168 Benchmark]: RCFGBuilder took 234.29 ms. Allocated memory is still 138.9 MB. Free memory was 117.9 MB in the beginning and 106.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-02-10 23:28:44,828 INFO L168 Benchmark]: TraceAbstraction took 8055.80 ms. Allocated memory was 138.9 MB in the beginning and 329.3 MB in the end (delta: 190.3 MB). Free memory was 106.5 MB in the beginning and 184.6 MB in the end (delta: -78.1 MB). Peak memory consumption was 112.2 MB. Max. memory is 7.1 GB. [2020-02-10 23:28:44,831 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 1.41 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 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 38.60 ms. Allocated memory is still 138.9 MB. Free memory was 120.7 MB in the beginning and 119.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.75 ms. Allocated memory is still 138.9 MB. Free memory was 119.0 MB in the beginning and 117.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 234.29 ms. Allocated memory is still 138.9 MB. Free memory was 117.9 MB in the beginning and 106.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8055.80 ms. Allocated memory was 138.9 MB in the beginning and 329.3 MB in the end (delta: 190.3 MB). Free memory was 106.5 MB in the beginning and 184.6 MB in the end (delta: -78.1 MB). Peak memory consumption was 112.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.1s, 30 ProgramPointsBefore, 26 ProgramPointsAfterwards, 29 TransitionsBefore, 25 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 60 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 66 CheckedPairsTotal, 4 TotalNumberOfCompositions - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 7.9s, OverallIterations: 27, TraceHistogramMax: 1, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 233 SDtfs, 224 SDslu, 145 SDs, 0 SdLazy, 399 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 27 MinimizatonAttempts, 207 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 44052 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...