/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-abd8500 [2020-01-16 21:46:52,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 21:46:52,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 21:46:52,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 21:46:52,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 21:46:52,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 21:46:52,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 21:46:52,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 21:46:52,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 21:46:52,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 21:46:52,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 21:46:52,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 21:46:52,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 21:46:52,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 21:46:52,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 21:46:52,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 21:46:52,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 21:46:52,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 21:46:52,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 21:46:52,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 21:46:52,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 21:46:52,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 21:46:52,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 21:46:52,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 21:46:52,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 21:46:52,089 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 [2020-01-16 21:46:52,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 21:46:52,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 21:46:52,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 21:46:52,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 21:46:52,113 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 21:46:52,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 21:46:52,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 21:46:52,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 21:46:52,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 21:46:52,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 21:46:52,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 21:46:52,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 21:46:52,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 21:46:52,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 21:46:52,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 21:46:52,117 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 21:46:52,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 21:46:52,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 21:46:52,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 21:46:52,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 21:46:52,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 21:46:52,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 21:46:52,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 21:46:52,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 21:46:52,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 21:46:52,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 21:46:52,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 21:46:52,119 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-01-16 21:46:52,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-01-16 21:46:52,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 21:46:52,408 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 21:46:52,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 21:46:52,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 21:46:52,431 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 21:46:52,433 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 21:46:52,433 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl [2020-01-16 21:46:52,434 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl' [2020-01-16 21:46:52,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 21:46:52,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 21:46:52,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 21:46:52,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 21:46:52,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 21:46:52,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:52" (1/1) ... [2020-01-16 21:46:52,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:52" (1/1) ... [2020-01-16 21:46:52,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 21:46:52,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 21:46:52,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 21:46:52,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 21:46:52,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:52" (1/1) ... [2020-01-16 21:46:52,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:52" (1/1) ... [2020-01-16 21:46:52,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:52" (1/1) ... [2020-01-16 21:46:52,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:52" (1/1) ... [2020-01-16 21:46:52,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:52" (1/1) ... [2020-01-16 21:46:52,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:52" (1/1) ... [2020-01-16 21:46:52,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:52" (1/1) ... [2020-01-16 21:46:52,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 21:46:52,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 21:46:52,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 21:46:52,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 21:46:52,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 21:46:52,608 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 21:46:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 21:46:52,610 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 21:46:52,611 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 21:46:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 21:46:52,611 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 21:46:52,611 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 21:46:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 21:46:52,612 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 21:46:52,612 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 21:46:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 21:46:52,612 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 21:46:52,613 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 21:46:52,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 21:46:52,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 21:46:52,614 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 21:46:52,779 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 21:46:52,779 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 21:46:52,780 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 09:46:52 BoogieIcfgContainer [2020-01-16 21:46:52,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 21:46:52,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 21:46:52,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 21:46:52,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 21:46:52,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:52" (1/2) ... [2020-01-16 21:46:52,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667a4e64 and model type example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 09:46:52, skipping insertion in model container [2020-01-16 21:46:52,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 09:46:52" (2/2) ... [2020-01-16 21:46:52,789 INFO L109 eAbstractionObserver]: Analyzing ICFG example_4.bpl [2020-01-16 21:46:52,799 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 21:46:52,805 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 21:46:52,806 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 21:46:52,948 INFO L250 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-01-16 21:46:52,971 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 21:46:52,971 INFO L375 AbstractCegarLoop]: Hoare is false [2020-01-16 21:46:52,972 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 21:46:52,972 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 21:46:52,972 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 21:46:52,972 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 21:46:52,972 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 21:46:52,972 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 21:46:52,985 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 35 transitions [2020-01-16 21:46:52,987 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions [2020-01-16 21:46:53,048 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2020-01-16 21:46:53,049 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-01-16 21:46:53,055 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. [2020-01-16 21:46:53,058 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions [2020-01-16 21:46:53,082 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2020-01-16 21:46:53,082 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-01-16 21:46:53,084 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. [2020-01-16 21:46:53,086 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 216 [2020-01-16 21:46:53,087 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-01-16 21:46:53,187 INFO L206 etLargeBlockEncoding]: Checked pairs total: 66 [2020-01-16 21:46:53,188 INFO L214 etLargeBlockEncoding]: Total number of compositions: 5 [2020-01-16 21:46:53,188 INFO L162 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 207 [2020-01-16 21:46:53,207 INFO L129 PetriNetUnfolder]: 17/41 cut-off events. [2020-01-16 21:46:53,208 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-01-16 21:46:53,208 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:53,209 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:53,210 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:53,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:53,216 INFO L82 PathProgramCache]: Analyzing trace with hash 184386175, now seen corresponding path program 1 times [2020-01-16 21:46:53,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:53,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373581893] [2020-01-16 21:46:53,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:53,360 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373581893] [2020-01-16 21:46:53,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:53,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:46:53,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847756172] [2020-01-16 21:46:53,371 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:46:53,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:53,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:46:53,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:46:53,391 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 40 [2020-01-16 21:46:53,393 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions. Second operand 3 states. [2020-01-16 21:46:53,393 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:53,393 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 40 [2020-01-16 21:46:53,395 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:53,460 INFO L129 PetriNetUnfolder]: 14/38 cut-off events. [2020-01-16 21:46:53,461 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2020-01-16 21:46:53,462 INFO L76 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 38 events. 14/38 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 74 event pairs. 1/38 useless extension candidates. Maximal degree in co-relation 35. Up to 12 conditions per place. [2020-01-16 21:46:53,463 INFO L123 encePairwiseOnDemand]: 38/40 looper letters, 3 selfloop transitions, 2 changer transitions [2020-01-16 21:46:53,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:46:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:46:53,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2020-01-16 21:46:53,478 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2020-01-16 21:46:53,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2020-01-16 21:46:53,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2020-01-16 21:46:53,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:53,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2020-01-16 21:46:53,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:46:53,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:46:53,495 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:46:53,497 INFO L174 Difference]: Start difference. First operand has 30 places, 30 transitions. Second operand 3 states and 110 transitions. [2020-01-16 21:46:53,498 INFO L199 Difference]: Finished difference. Result has 32 places, 25 transitions [2020-01-16 21:46:53,501 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2020-01-16 21:46:53,503 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 32 places, 25 transitions [2020-01-16 21:46:53,503 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions [2020-01-16 21:46:53,514 INFO L129 PetriNetUnfolder]: 14/38 cut-off events. [2020-01-16 21:46:53,515 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2020-01-16 21:46:53,516 INFO L76 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 38 events. 14/38 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 81 event pairs. 0/37 useless extension candidates. Maximal degree in co-relation 67. Up to 12 conditions per place. [2020-01-16 21:46:53,518 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 5 of 32 places, 0 of 25 transitions, 1 of 108 flow. [2020-01-16 21:46:53,519 INFO L478 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions [2020-01-16 21:46:53,519 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:46:53,530 INFO L129 PetriNetUnfolder]: 14/37 cut-off events. [2020-01-16 21:46:53,530 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2020-01-16 21:46:53,530 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:53,530 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:53,531 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:53,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:53,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1049209955, now seen corresponding path program 1 times [2020-01-16 21:46:53,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:53,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337747316] [2020-01-16 21:46:53,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:53,576 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337747316] [2020-01-16 21:46:53,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:53,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:46:53,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715741112] [2020-01-16 21:46:53,580 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:46:53,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:53,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:46:53,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:46:53,582 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 40 [2020-01-16 21:46:53,583 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions. Second operand 3 states. [2020-01-16 21:46:53,583 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:53,583 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 40 [2020-01-16 21:46:53,583 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:53,607 INFO L129 PetriNetUnfolder]: 3/20 cut-off events. [2020-01-16 21:46:53,608 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-01-16 21:46:53,608 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 20 events. 3/20 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 6/25 useless extension candidates. Maximal degree in co-relation 22. Up to 4 conditions per place. [2020-01-16 21:46:53,609 INFO L123 encePairwiseOnDemand]: 36/40 looper letters, 1 selfloop transitions, 4 changer transitions [2020-01-16 21:46:53,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:46:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:46:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2020-01-16 21:46:53,611 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2020-01-16 21:46:53,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2020-01-16 21:46:53,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2020-01-16 21:46:53,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:53,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2020-01-16 21:46:53,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:46:53,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:46:53,614 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:46:53,614 INFO L174 Difference]: Start difference. First operand has 27 places, 25 transitions. Second operand 3 states and 110 transitions. [2020-01-16 21:46:53,615 INFO L199 Difference]: Finished difference. Result has 29 places, 19 transitions [2020-01-16 21:46:53,615 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2020-01-16 21:46:53,616 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 29 places, 19 transitions [2020-01-16 21:46:53,616 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions [2020-01-16 21:46:53,621 INFO L129 PetriNetUnfolder]: 3/20 cut-off events. [2020-01-16 21:46:53,622 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-01-16 21:46:53,622 INFO L76 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 20 events. 3/20 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 25. Up to 4 conditions per place. [2020-01-16 21:46:53,623 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 29 places, 0 of 19 transitions, 1 of 79 flow. [2020-01-16 21:46:53,623 INFO L478 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions [2020-01-16 21:46:53,623 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:46:53,628 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2020-01-16 21:46:53,628 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-01-16 21:46:53,628 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:53,628 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:53,629 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:53,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:53,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1312181641, now seen corresponding path program 1 times [2020-01-16 21:46:53,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:53,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968898952] [2020-01-16 21:46:53,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:53,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968898952] [2020-01-16 21:46:53,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:53,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:46:53,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32672951] [2020-01-16 21:46:53,655 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:46:53,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:53,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:46:53,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:46:53,657 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 40 [2020-01-16 21:46:53,657 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions. Second operand 3 states. [2020-01-16 21:46:53,657 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:53,658 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 40 [2020-01-16 21:46:53,658 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:53,666 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2020-01-16 21:46:53,667 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2020-01-16 21:46:53,667 INFO L76 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 14 events. 0/14 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs. 2/15 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2020-01-16 21:46:53,668 INFO L123 encePairwiseOnDemand]: 37/40 looper letters, 1 selfloop transitions, 3 changer transitions [2020-01-16 21:46:53,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:46:53,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:46:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2020-01-16 21:46:53,670 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9083333333333333 [2020-01-16 21:46:53,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 109 transitions. [2020-01-16 21:46:53,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 109 transitions. [2020-01-16 21:46:53,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:53,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 109 transitions. [2020-01-16 21:46:53,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:46:53,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:46:53,673 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:46:53,673 INFO L174 Difference]: Start difference. First operand has 28 places, 19 transitions. Second operand 3 states and 109 transitions. [2020-01-16 21:46:53,674 INFO L199 Difference]: Finished difference. Result has 30 places, 14 transitions [2020-01-16 21:46:53,674 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=30, PETRI_TRANSITIONS=14} [2020-01-16 21:46:53,674 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 30 places, 14 transitions [2020-01-16 21:46:53,674 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 30 places, 14 transitions [2020-01-16 21:46:53,678 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2020-01-16 21:46:53,679 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-01-16 21:46:53,679 INFO L76 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 14 events. 0/14 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs. 0/13 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2020-01-16 21:46:53,680 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 30 places, 0 of 14 transitions, 1 of 55 flow. [2020-01-16 21:46:53,680 INFO L478 AbstractCegarLoop]: Abstraction has has 29 places, 14 transitions [2020-01-16 21:46:53,680 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:46:53,683 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-01-16 21:46:53,683 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-01-16 21:46:53,684 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:53,684 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:53,684 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:53,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:53,685 INFO L82 PathProgramCache]: Analyzing trace with hash 2065265875, now seen corresponding path program 1 times [2020-01-16 21:46:53,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:53,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048399272] [2020-01-16 21:46:53,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:53,942 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048399272] [2020-01-16 21:46:53,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:53,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:53,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600874178] [2020-01-16 21:46:53,945 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:53,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:53,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:53,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:53,949 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:53,949 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 14 transitions. Second operand 6 states. [2020-01-16 21:46:53,950 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:53,950 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:53,950 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:54,090 INFO L129 PetriNetUnfolder]: 18/64 cut-off events. [2020-01-16 21:46:54,091 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-01-16 21:46:54,091 INFO L76 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 64 events. 18/64 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 210 event pairs. 0/55 useless extension candidates. Maximal degree in co-relation 98. Up to 17 conditions per place. [2020-01-16 21:46:54,092 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 10 selfloop transitions, 8 changer transitions [2020-01-16 21:46:54,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:54,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:54,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:54,098 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:54,098 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:54,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:54,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:54,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:54,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:54,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:54,108 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:54,108 INFO L174 Difference]: Start difference. First operand has 29 places, 14 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:54,111 INFO L199 Difference]: Finished difference. Result has 38 places, 20 transitions [2020-01-16 21:46:54,112 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2020-01-16 21:46:54,112 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 38 places, 20 transitions [2020-01-16 21:46:54,112 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 38 places, 20 transitions [2020-01-16 21:46:54,124 INFO L129 PetriNetUnfolder]: 3/34 cut-off events. [2020-01-16 21:46:54,124 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2020-01-16 21:46:54,125 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 34 events. 3/34 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs. 0/30 useless extension candidates. Maximal degree in co-relation 52. Up to 5 conditions per place. [2020-01-16 21:46:54,126 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 38 places, 0 of 20 transitions, 0 of 100 flow. [2020-01-16 21:46:54,126 INFO L478 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions [2020-01-16 21:46:54,126 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:54,141 INFO L129 PetriNetUnfolder]: 3/31 cut-off events. [2020-01-16 21:46:54,142 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2020-01-16 21:46:54,142 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:54,142 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:54,142 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:54,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:54,143 INFO L82 PathProgramCache]: Analyzing trace with hash 746127439, now seen corresponding path program 2 times [2020-01-16 21:46:54,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:54,143 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599144636] [2020-01-16 21:46:54,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:54,350 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599144636] [2020-01-16 21:46:54,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:54,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:54,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026431941] [2020-01-16 21:46:54,352 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:54,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:54,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:54,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:54,353 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:54,354 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions. Second operand 6 states. [2020-01-16 21:46:54,354 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:54,354 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:54,354 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:54,479 INFO L129 PetriNetUnfolder]: 19/97 cut-off events. [2020-01-16 21:46:54,479 INFO L130 PetriNetUnfolder]: For 131/136 co-relation queries the response was YES. [2020-01-16 21:46:54,480 INFO L76 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 97 events. 19/97 cut-off events. For 131/136 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 441 event pairs. 1/91 useless extension candidates. Maximal degree in co-relation 207. Up to 20 conditions per place. [2020-01-16 21:46:54,481 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 10 selfloop transitions, 15 changer transitions [2020-01-16 21:46:54,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:54,484 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:54,484 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:54,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:54,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:54,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:54,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:54,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:54,487 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:54,488 INFO L174 Difference]: Start difference. First operand has 38 places, 20 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:54,488 INFO L199 Difference]: Finished difference. Result has 47 places, 28 transitions [2020-01-16 21:46:54,489 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2020-01-16 21:46:54,489 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 47 places, 28 transitions [2020-01-16 21:46:54,489 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 47 places, 28 transitions [2020-01-16 21:46:54,515 INFO L129 PetriNetUnfolder]: 8/73 cut-off events. [2020-01-16 21:46:54,516 INFO L130 PetriNetUnfolder]: For 169/171 co-relation queries the response was YES. [2020-01-16 21:46:54,517 INFO L76 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 73 events. 8/73 cut-off events. For 169/171 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 318 event pairs. 0/67 useless extension candidates. Maximal degree in co-relation 149. Up to 12 conditions per place. [2020-01-16 21:46:54,519 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 47 places, 0 of 28 transitions, 0 of 204 flow. [2020-01-16 21:46:54,519 INFO L478 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions [2020-01-16 21:46:54,520 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:54,532 INFO L129 PetriNetUnfolder]: 8/66 cut-off events. [2020-01-16 21:46:54,533 INFO L130 PetriNetUnfolder]: For 169/171 co-relation queries the response was YES. [2020-01-16 21:46:54,533 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:54,533 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:54,533 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:54,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:54,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1363096493, now seen corresponding path program 3 times [2020-01-16 21:46:54,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:54,534 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512086355] [2020-01-16 21:46:54,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:54,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:54,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512086355] [2020-01-16 21:46:54,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:54,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:54,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191330338] [2020-01-16 21:46:54,728 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:54,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:54,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:54,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:54,729 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:54,730 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions. Second operand 6 states. [2020-01-16 21:46:54,730 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:54,730 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:54,730 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:54,837 INFO L129 PetriNetUnfolder]: 20/134 cut-off events. [2020-01-16 21:46:54,837 INFO L130 PetriNetUnfolder]: For 429/439 co-relation queries the response was YES. [2020-01-16 21:46:54,839 INFO L76 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 134 events. 20/134 cut-off events. For 429/439 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 776 event pairs. 1/129 useless extension candidates. Maximal degree in co-relation 334. Up to 25 conditions per place. [2020-01-16 21:46:54,839 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 12 selfloop transitions, 21 changer transitions [2020-01-16 21:46:54,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:54,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:54,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:54,842 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:54,842 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:54,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:54,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:54,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:54,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:54,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:54,845 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:54,845 INFO L174 Difference]: Start difference. First operand has 47 places, 28 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:54,846 INFO L199 Difference]: Finished difference. Result has 56 places, 37 transitions [2020-01-16 21:46:54,846 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=56, PETRI_TRANSITIONS=37} [2020-01-16 21:46:54,847 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 56 places, 37 transitions [2020-01-16 21:46:54,847 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 56 places, 37 transitions [2020-01-16 21:46:54,866 INFO L129 PetriNetUnfolder]: 13/115 cut-off events. [2020-01-16 21:46:54,867 INFO L130 PetriNetUnfolder]: For 569/575 co-relation queries the response was YES. [2020-01-16 21:46:54,868 INFO L76 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 115 events. 13/115 cut-off events. For 569/575 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 665 event pairs. 0/108 useless extension candidates. Maximal degree in co-relation 281. Up to 17 conditions per place. [2020-01-16 21:46:54,869 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 56 places, 0 of 37 transitions, 14 of 372 flow. [2020-01-16 21:46:54,869 INFO L478 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions [2020-01-16 21:46:54,869 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:54,887 INFO L129 PetriNetUnfolder]: 13/104 cut-off events. [2020-01-16 21:46:54,888 INFO L130 PetriNetUnfolder]: For 569/575 co-relation queries the response was YES. [2020-01-16 21:46:54,888 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:54,888 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:54,888 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:54,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:54,889 INFO L82 PathProgramCache]: Analyzing trace with hash 115010229, now seen corresponding path program 4 times [2020-01-16 21:46:54,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:54,889 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561500234] [2020-01-16 21:46:54,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:55,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561500234] [2020-01-16 21:46:55,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:55,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:55,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496485653] [2020-01-16 21:46:55,030 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:55,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:55,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:55,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:55,032 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:55,032 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions. Second operand 6 states. [2020-01-16 21:46:55,032 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:55,033 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:55,033 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:55,116 INFO L129 PetriNetUnfolder]: 20/135 cut-off events. [2020-01-16 21:46:55,117 INFO L130 PetriNetUnfolder]: For 824/844 co-relation queries the response was YES. [2020-01-16 21:46:55,118 INFO L76 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 135 events. 20/135 cut-off events. For 824/844 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 773 event pairs. 1/132 useless extension candidates. Maximal degree in co-relation 387. Up to 32 conditions per place. [2020-01-16 21:46:55,119 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 17 selfloop transitions, 23 changer transitions [2020-01-16 21:46:55,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:55,121 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:55,121 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:55,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:55,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:55,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:55,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:55,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:55,124 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:55,124 INFO L174 Difference]: Start difference. First operand has 55 places, 37 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:55,125 INFO L199 Difference]: Finished difference. Result has 64 places, 41 transitions [2020-01-16 21:46:55,125 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=494, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2020-01-16 21:46:55,126 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 64 places, 41 transitions [2020-01-16 21:46:55,126 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 41 transitions [2020-01-16 21:46:55,151 INFO L129 PetriNetUnfolder]: 14/122 cut-off events. [2020-01-16 21:46:55,151 INFO L130 PetriNetUnfolder]: For 1056/1068 co-relation queries the response was YES. [2020-01-16 21:46:55,153 INFO L76 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 122 events. 14/122 cut-off events. For 1056/1068 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 726 event pairs. 0/117 useless extension candidates. Maximal degree in co-relation 336. Up to 19 conditions per place. [2020-01-16 21:46:55,154 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 64 places, 0 of 41 transitions, 15 of 494 flow. [2020-01-16 21:46:55,154 INFO L478 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions [2020-01-16 21:46:55,154 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:55,177 INFO L129 PetriNetUnfolder]: 14/111 cut-off events. [2020-01-16 21:46:55,177 INFO L130 PetriNetUnfolder]: For 1056/1068 co-relation queries the response was YES. [2020-01-16 21:46:55,177 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:55,177 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:55,178 INFO L426 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:55,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:55,178 INFO L82 PathProgramCache]: Analyzing trace with hash 207473, now seen corresponding path program 5 times [2020-01-16 21:46:55,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:55,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598457784] [2020-01-16 21:46:55,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:55,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598457784] [2020-01-16 21:46:55,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:55,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:55,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890254766] [2020-01-16 21:46:55,310 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:55,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:55,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:55,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:55,312 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:55,312 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions. Second operand 6 states. [2020-01-16 21:46:55,312 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:55,312 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:55,312 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:55,412 INFO L129 PetriNetUnfolder]: 20/137 cut-off events. [2020-01-16 21:46:55,413 INFO L130 PetriNetUnfolder]: For 1330/1366 co-relation queries the response was YES. [2020-01-16 21:46:55,414 INFO L76 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 137 events. 20/137 cut-off events. For 1330/1366 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 797 event pairs. 1/136 useless extension candidates. Maximal degree in co-relation 435. Up to 31 conditions per place. [2020-01-16 21:46:55,415 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 21 selfloop transitions, 25 changer transitions [2020-01-16 21:46:55,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:55,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:55,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:55,417 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:55,417 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:55,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:55,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:55,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:55,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:55,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:55,419 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:55,419 INFO L174 Difference]: Start difference. First operand has 63 places, 41 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:55,420 INFO L199 Difference]: Finished difference. Result has 72 places, 46 transitions [2020-01-16 21:46:55,421 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=651, PETRI_PLACES=72, PETRI_TRANSITIONS=46} [2020-01-16 21:46:55,421 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 72 places, 46 transitions [2020-01-16 21:46:55,421 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 72 places, 46 transitions [2020-01-16 21:46:55,446 INFO L129 PetriNetUnfolder]: 14/121 cut-off events. [2020-01-16 21:46:55,447 INFO L130 PetriNetUnfolder]: For 1691/1717 co-relation queries the response was YES. [2020-01-16 21:46:55,449 INFO L76 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 121 events. 14/121 cut-off events. For 1691/1717 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 696 event pairs. 0/120 useless extension candidates. Maximal degree in co-relation 442. Up to 19 conditions per place. [2020-01-16 21:46:55,450 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 72 places, 0 of 46 transitions, 15 of 651 flow. [2020-01-16 21:46:55,450 INFO L478 AbstractCegarLoop]: Abstraction has has 71 places, 46 transitions [2020-01-16 21:46:55,450 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:55,473 INFO L129 PetriNetUnfolder]: 14/111 cut-off events. [2020-01-16 21:46:55,473 INFO L130 PetriNetUnfolder]: For 1691/1717 co-relation queries the response was YES. [2020-01-16 21:46:55,473 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:55,473 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:55,473 INFO L426 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:55,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:55,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1730472275, now seen corresponding path program 6 times [2020-01-16 21:46:55,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:55,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920773976] [2020-01-16 21:46:55,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:55,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920773976] [2020-01-16 21:46:55,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:55,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:55,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864017255] [2020-01-16 21:46:55,596 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:55,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:55,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:55,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:55,597 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:55,597 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 46 transitions. Second operand 6 states. [2020-01-16 21:46:55,597 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:55,597 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:55,597 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:55,710 INFO L129 PetriNetUnfolder]: 20/136 cut-off events. [2020-01-16 21:46:55,710 INFO L130 PetriNetUnfolder]: For 2011/2095 co-relation queries the response was YES. [2020-01-16 21:46:55,713 INFO L76 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 136 events. 20/136 cut-off events. For 2011/2095 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 790 event pairs. 5/139 useless extension candidates. Maximal degree in co-relation 550. Up to 31 conditions per place. [2020-01-16 21:46:55,713 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 22 selfloop transitions, 25 changer transitions [2020-01-16 21:46:55,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:55,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:55,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:55,716 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:55,716 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:55,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:55,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:55,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:55,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:55,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:55,719 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:55,719 INFO L174 Difference]: Start difference. First operand has 71 places, 46 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:55,722 INFO L199 Difference]: Finished difference. Result has 79 places, 48 transitions [2020-01-16 21:46:55,722 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=745, PETRI_PLACES=79, PETRI_TRANSITIONS=48} [2020-01-16 21:46:55,723 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 79 places, 48 transitions [2020-01-16 21:46:55,723 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 48 transitions [2020-01-16 21:46:55,764 INFO L129 PetriNetUnfolder]: 14/120 cut-off events. [2020-01-16 21:46:55,765 INFO L130 PetriNetUnfolder]: For 2219/2245 co-relation queries the response was YES. [2020-01-16 21:46:55,767 INFO L76 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 120 events. 14/120 cut-off events. For 2219/2245 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 693 event pairs. 0/119 useless extension candidates. Maximal degree in co-relation 492. Up to 19 conditions per place. [2020-01-16 21:46:55,769 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 79 places, 0 of 48 transitions, 15 of 745 flow. [2020-01-16 21:46:55,770 INFO L478 AbstractCegarLoop]: Abstraction has has 78 places, 48 transitions [2020-01-16 21:46:55,770 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:55,804 INFO L129 PetriNetUnfolder]: 14/111 cut-off events. [2020-01-16 21:46:55,805 INFO L130 PetriNetUnfolder]: For 2197/2219 co-relation queries the response was YES. [2020-01-16 21:46:55,805 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:55,805 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:55,805 INFO L426 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:55,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:55,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1003129443, now seen corresponding path program 7 times [2020-01-16 21:46:55,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:55,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813603169] [2020-01-16 21:46:55,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:56,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813603169] [2020-01-16 21:46:56,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:56,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:56,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302569827] [2020-01-16 21:46:56,013 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:56,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:56,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:56,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:56,014 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:56,015 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 48 transitions. Second operand 6 states. [2020-01-16 21:46:56,015 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:56,015 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:56,015 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:56,134 INFO L129 PetriNetUnfolder]: 21/149 cut-off events. [2020-01-16 21:46:56,134 INFO L130 PetriNetUnfolder]: For 2993/3131 co-relation queries the response was YES. [2020-01-16 21:46:56,136 INFO L76 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 149 events. 21/149 cut-off events. For 2993/3131 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 920 event pairs. 8/155 useless extension candidates. Maximal degree in co-relation 676. Up to 31 conditions per place. [2020-01-16 21:46:56,137 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 23 selfloop transitions, 29 changer transitions [2020-01-16 21:46:56,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:56,139 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:56,139 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:56,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:56,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:56,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:56,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:56,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:56,141 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:56,141 INFO L174 Difference]: Start difference. First operand has 78 places, 48 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:56,142 INFO L199 Difference]: Finished difference. Result has 87 places, 53 transitions [2020-01-16 21:46:56,142 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=938, PETRI_PLACES=87, PETRI_TRANSITIONS=53} [2020-01-16 21:46:56,142 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 87 places, 53 transitions [2020-01-16 21:46:56,143 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 53 transitions [2020-01-16 21:46:56,177 INFO L129 PetriNetUnfolder]: 16/134 cut-off events. [2020-01-16 21:46:56,177 INFO L130 PetriNetUnfolder]: For 3131/3153 co-relation queries the response was YES. [2020-01-16 21:46:56,179 INFO L76 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 134 events. 16/134 cut-off events. For 3131/3153 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 822 event pairs. 2/132 useless extension candidates. Maximal degree in co-relation 623. Up to 21 conditions per place. [2020-01-16 21:46:56,180 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 87 places, 0 of 53 transitions, 17 of 938 flow. [2020-01-16 21:46:56,180 INFO L478 AbstractCegarLoop]: Abstraction has has 86 places, 53 transitions [2020-01-16 21:46:56,180 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:56,210 INFO L129 PetriNetUnfolder]: 16/124 cut-off events. [2020-01-16 21:46:56,210 INFO L130 PetriNetUnfolder]: For 3796/3918 co-relation queries the response was YES. [2020-01-16 21:46:56,210 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:56,210 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:56,211 INFO L426 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:56,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:56,211 INFO L82 PathProgramCache]: Analyzing trace with hash -621961871, now seen corresponding path program 8 times [2020-01-16 21:46:56,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:56,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720266837] [2020-01-16 21:46:56,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:56,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:56,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720266837] [2020-01-16 21:46:56,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:56,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:56,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964760183] [2020-01-16 21:46:56,309 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:56,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:56,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:56,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:56,310 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:56,310 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 53 transitions. Second operand 6 states. [2020-01-16 21:46:56,310 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:56,311 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:56,311 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:56,455 INFO L129 PetriNetUnfolder]: 22/172 cut-off events. [2020-01-16 21:46:56,455 INFO L130 PetriNetUnfolder]: For 4831/4999 co-relation queries the response was YES. [2020-01-16 21:46:56,458 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 172 events. 22/172 cut-off events. For 4831/4999 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1144 event pairs. 5/173 useless extension candidates. Maximal degree in co-relation 853. Up to 34 conditions per place. [2020-01-16 21:46:56,458 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 32 selfloop transitions, 39 changer transitions [2020-01-16 21:46:56,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:56,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:56,460 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:56,460 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:56,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:56,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:56,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:56,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:56,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:56,463 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:56,463 INFO L174 Difference]: Start difference. First operand has 86 places, 53 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:56,464 INFO L199 Difference]: Finished difference. Result has 95 places, 64 transitions [2020-01-16 21:46:56,464 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1324, PETRI_PLACES=95, PETRI_TRANSITIONS=64} [2020-01-16 21:46:56,465 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 95 places, 64 transitions [2020-01-16 21:46:56,465 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 64 transitions [2020-01-16 21:46:56,505 INFO L129 PetriNetUnfolder]: 20/168 cut-off events. [2020-01-16 21:46:56,506 INFO L130 PetriNetUnfolder]: For 5494/5553 co-relation queries the response was YES. [2020-01-16 21:46:56,508 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 168 events. 20/168 cut-off events. For 5494/5553 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1138 event pairs. 1/164 useless extension candidates. Maximal degree in co-relation 849. Up to 27 conditions per place. [2020-01-16 21:46:56,509 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 95 places, 0 of 64 transitions, 21 of 1324 flow. [2020-01-16 21:46:56,509 INFO L478 AbstractCegarLoop]: Abstraction has has 94 places, 64 transitions [2020-01-16 21:46:56,509 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:56,546 INFO L129 PetriNetUnfolder]: 20/155 cut-off events. [2020-01-16 21:46:56,546 INFO L130 PetriNetUnfolder]: For 5544/5626 co-relation queries the response was YES. [2020-01-16 21:46:56,546 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:56,546 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:56,547 INFO L426 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:56,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:56,547 INFO L82 PathProgramCache]: Analyzing trace with hash 667459879, now seen corresponding path program 9 times [2020-01-16 21:46:56,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:56,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516440978] [2020-01-16 21:46:56,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:56,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:56,660 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516440978] [2020-01-16 21:46:56,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:56,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:56,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733413056] [2020-01-16 21:46:56,661 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:56,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:56,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:56,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:56,662 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:56,662 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 64 transitions. Second operand 6 states. [2020-01-16 21:46:56,662 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:56,662 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:56,663 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:56,815 INFO L129 PetriNetUnfolder]: 22/171 cut-off events. [2020-01-16 21:46:56,816 INFO L130 PetriNetUnfolder]: For 6063/6228 co-relation queries the response was YES. [2020-01-16 21:46:56,818 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 171 events. 22/171 cut-off events. For 6063/6228 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1134 event pairs. 5/172 useless extension candidates. Maximal degree in co-relation 928. Up to 34 conditions per place. [2020-01-16 21:46:56,819 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 31 selfloop transitions, 40 changer transitions [2020-01-16 21:46:56,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:56,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:56,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:56,821 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:56,821 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:56,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:56,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:56,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:56,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:56,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:56,823 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:56,823 INFO L174 Difference]: Start difference. First operand has 94 places, 64 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:56,825 INFO L199 Difference]: Finished difference. Result has 101 places, 67 transitions [2020-01-16 21:46:56,825 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1478, PETRI_PLACES=101, PETRI_TRANSITIONS=67} [2020-01-16 21:46:56,825 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 101 places, 67 transitions [2020-01-16 21:46:56,825 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 101 places, 67 transitions [2020-01-16 21:46:56,867 INFO L129 PetriNetUnfolder]: 20/167 cut-off events. [2020-01-16 21:46:56,867 INFO L130 PetriNetUnfolder]: For 6524/6606 co-relation queries the response was YES. [2020-01-16 21:46:56,869 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 167 events. 20/167 cut-off events. For 6524/6606 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1117 event pairs. 1/161 useless extension candidates. Maximal degree in co-relation 895. Up to 27 conditions per place. [2020-01-16 21:46:56,871 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 101 places, 0 of 67 transitions, 21 of 1478 flow. [2020-01-16 21:46:56,871 INFO L478 AbstractCegarLoop]: Abstraction has has 100 places, 67 transitions [2020-01-16 21:46:56,871 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:56,911 INFO L129 PetriNetUnfolder]: 20/155 cut-off events. [2020-01-16 21:46:56,911 INFO L130 PetriNetUnfolder]: For 6524/6606 co-relation queries the response was YES. [2020-01-16 21:46:56,911 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:56,912 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:56,912 INFO L426 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:56,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:56,912 INFO L82 PathProgramCache]: Analyzing trace with hash 669049165, now seen corresponding path program 10 times [2020-01-16 21:46:56,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:56,913 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933507952] [2020-01-16 21:46:56,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:57,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933507952] [2020-01-16 21:46:57,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:57,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:57,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618406205] [2020-01-16 21:46:57,046 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:57,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:57,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:57,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:57,048 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:57,049 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 67 transitions. Second operand 6 states. [2020-01-16 21:46:57,049 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:57,049 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:57,049 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:57,201 INFO L129 PetriNetUnfolder]: 22/170 cut-off events. [2020-01-16 21:46:57,201 INFO L130 PetriNetUnfolder]: For 7121/7286 co-relation queries the response was YES. [2020-01-16 21:46:57,204 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 170 events. 22/170 cut-off events. For 7121/7286 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1125 event pairs. 5/171 useless extension candidates. Maximal degree in co-relation 968. Up to 34 conditions per place. [2020-01-16 21:46:57,205 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 30 selfloop transitions, 43 changer transitions [2020-01-16 21:46:57,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:57,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:57,207 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:57,207 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:57,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:57,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:57,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:57,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:57,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:57,210 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:57,210 INFO L174 Difference]: Start difference. First operand has 100 places, 67 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:57,214 INFO L199 Difference]: Finished difference. Result has 109 places, 75 transitions [2020-01-16 21:46:57,214 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1807, PETRI_PLACES=109, PETRI_TRANSITIONS=75} [2020-01-16 21:46:57,214 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 109 places, 75 transitions [2020-01-16 21:46:57,215 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 109 places, 75 transitions [2020-01-16 21:46:57,263 INFO L129 PetriNetUnfolder]: 20/166 cut-off events. [2020-01-16 21:46:57,263 INFO L130 PetriNetUnfolder]: For 8524/8681 co-relation queries the response was YES. [2020-01-16 21:46:57,266 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 166 events. 20/166 cut-off events. For 8524/8681 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1119 event pairs. 4/165 useless extension candidates. Maximal degree in co-relation 950. Up to 27 conditions per place. [2020-01-16 21:46:57,267 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 109 places, 0 of 75 transitions, 21 of 1807 flow. [2020-01-16 21:46:57,268 INFO L478 AbstractCegarLoop]: Abstraction has has 108 places, 75 transitions [2020-01-16 21:46:57,268 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:57,311 INFO L129 PetriNetUnfolder]: 20/155 cut-off events. [2020-01-16 21:46:57,311 INFO L130 PetriNetUnfolder]: For 7791/7850 co-relation queries the response was YES. [2020-01-16 21:46:57,311 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:57,311 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:57,312 INFO L426 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:57,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:57,312 INFO L82 PathProgramCache]: Analyzing trace with hash -982353425, now seen corresponding path program 11 times [2020-01-16 21:46:57,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:57,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098323420] [2020-01-16 21:46:57,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:57,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098323420] [2020-01-16 21:46:57,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:57,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:57,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365502576] [2020-01-16 21:46:57,427 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:57,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:57,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:57,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:57,428 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:57,429 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 75 transitions. Second operand 6 states. [2020-01-16 21:46:57,429 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:57,429 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:57,429 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:57,594 INFO L129 PetriNetUnfolder]: 22/170 cut-off events. [2020-01-16 21:46:57,594 INFO L130 PetriNetUnfolder]: For 9284/9610 co-relation queries the response was YES. [2020-01-16 21:46:57,598 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 170 events. 22/170 cut-off events. For 9284/9610 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1130 event pairs. 5/170 useless extension candidates. Maximal degree in co-relation 1025. Up to 32 conditions per place. [2020-01-16 21:46:57,599 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 24 selfloop transitions, 47 changer transitions [2020-01-16 21:46:57,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:57,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:57,602 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:57,602 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:57,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:57,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:57,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:57,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:57,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:57,604 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:57,604 INFO L174 Difference]: Start difference. First operand has 108 places, 75 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:57,608 INFO L199 Difference]: Finished difference. Result has 115 places, 76 transitions [2020-01-16 21:46:57,608 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1950, PETRI_PLACES=115, PETRI_TRANSITIONS=76} [2020-01-16 21:46:57,610 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 115 places, 76 transitions [2020-01-16 21:46:57,610 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 115 places, 76 transitions [2020-01-16 21:46:57,684 INFO L129 PetriNetUnfolder]: 20/165 cut-off events. [2020-01-16 21:46:57,684 INFO L130 PetriNetUnfolder]: For 9110/9169 co-relation queries the response was YES. [2020-01-16 21:46:57,687 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 165 events. 20/165 cut-off events. For 9110/9169 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1106 event pairs. 1/161 useless extension candidates. Maximal degree in co-relation 982. Up to 27 conditions per place. [2020-01-16 21:46:57,689 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 115 places, 0 of 76 transitions, 21 of 1950 flow. [2020-01-16 21:46:57,690 INFO L478 AbstractCegarLoop]: Abstraction has has 114 places, 76 transitions [2020-01-16 21:46:57,690 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:57,734 INFO L129 PetriNetUnfolder]: 20/155 cut-off events. [2020-01-16 21:46:57,734 INFO L130 PetriNetUnfolder]: For 9110/9169 co-relation queries the response was YES. [2020-01-16 21:46:57,734 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:57,735 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:57,735 INFO L426 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:57,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:57,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1712604719, now seen corresponding path program 12 times [2020-01-16 21:46:57,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:57,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260817601] [2020-01-16 21:46:57,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:57,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:57,842 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260817601] [2020-01-16 21:46:57,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:57,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:57,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685360431] [2020-01-16 21:46:57,844 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:57,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:57,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:57,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:57,846 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:57,846 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 76 transitions. Second operand 6 states. [2020-01-16 21:46:57,846 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:57,846 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:57,846 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:58,007 INFO L129 PetriNetUnfolder]: 22/168 cut-off events. [2020-01-16 21:46:58,007 INFO L130 PetriNetUnfolder]: For 10754/11076 co-relation queries the response was YES. [2020-01-16 21:46:58,010 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 168 events. 22/168 cut-off events. For 10754/11076 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1115 event pairs. 15/180 useless extension candidates. Maximal degree in co-relation 1063. Up to 31 conditions per place. [2020-01-16 21:46:58,011 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 31 selfloop transitions, 44 changer transitions [2020-01-16 21:46:58,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:58,012 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:58,013 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:58,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:58,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:58,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:58,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:58,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:58,015 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:58,015 INFO L174 Difference]: Start difference. First operand has 114 places, 76 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:58,016 INFO L199 Difference]: Finished difference. Result has 121 places, 79 transitions [2020-01-16 21:46:58,017 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2137, PETRI_PLACES=121, PETRI_TRANSITIONS=79} [2020-01-16 21:46:58,018 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 121 places, 79 transitions [2020-01-16 21:46:58,018 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 121 places, 79 transitions [2020-01-16 21:46:58,070 INFO L129 PetriNetUnfolder]: 20/164 cut-off events. [2020-01-16 21:46:58,071 INFO L130 PetriNetUnfolder]: For 10426/10487 co-relation queries the response was YES. [2020-01-16 21:46:58,074 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 164 events. 20/164 cut-off events. For 10426/10487 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1099 event pairs. 1/161 useless extension candidates. Maximal degree in co-relation 1034. Up to 27 conditions per place. [2020-01-16 21:46:58,076 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 121 places, 0 of 79 transitions, 21 of 2137 flow. [2020-01-16 21:46:58,076 INFO L478 AbstractCegarLoop]: Abstraction has has 120 places, 79 transitions [2020-01-16 21:46:58,076 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:58,124 INFO L129 PetriNetUnfolder]: 20/155 cut-off events. [2020-01-16 21:46:58,125 INFO L130 PetriNetUnfolder]: For 10426/10487 co-relation queries the response was YES. [2020-01-16 21:46:58,125 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:58,125 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:58,125 INFO L426 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:58,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:58,125 INFO L82 PathProgramCache]: Analyzing trace with hash 547696437, now seen corresponding path program 13 times [2020-01-16 21:46:58,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:58,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085909333] [2020-01-16 21:46:58,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:58,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085909333] [2020-01-16 21:46:58,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:58,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:58,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801426023] [2020-01-16 21:46:58,267 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:58,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:58,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:58,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:58,272 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:58,272 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 79 transitions. Second operand 6 states. [2020-01-16 21:46:58,273 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:58,273 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:58,273 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:58,464 INFO L129 PetriNetUnfolder]: 22/173 cut-off events. [2020-01-16 21:46:58,464 INFO L130 PetriNetUnfolder]: For 12003/12229 co-relation queries the response was YES. [2020-01-16 21:46:58,467 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1379 conditions, 173 events. 22/173 cut-off events. For 12003/12229 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1164 event pairs. 13/182 useless extension candidates. Maximal degree in co-relation 1156. Up to 31 conditions per place. [2020-01-16 21:46:58,468 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 31 selfloop transitions, 46 changer transitions [2020-01-16 21:46:58,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:58,471 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:58,471 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:58,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:58,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:58,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:58,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:58,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:58,474 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:58,474 INFO L174 Difference]: Start difference. First operand has 120 places, 79 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:58,477 INFO L199 Difference]: Finished difference. Result has 128 places, 82 transitions [2020-01-16 21:46:58,477 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2352, PETRI_PLACES=128, PETRI_TRANSITIONS=82} [2020-01-16 21:46:58,477 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 128 places, 82 transitions [2020-01-16 21:46:58,477 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 128 places, 82 transitions [2020-01-16 21:46:58,551 INFO L129 PetriNetUnfolder]: 21/171 cut-off events. [2020-01-16 21:46:58,552 INFO L130 PetriNetUnfolder]: For 12419/12477 co-relation queries the response was YES. [2020-01-16 21:46:58,555 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1359 conditions, 171 events. 21/171 cut-off events. For 12419/12477 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1171 event pairs. 0/166 useless extension candidates. Maximal degree in co-relation 1130. Up to 28 conditions per place. [2020-01-16 21:46:58,557 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 128 places, 0 of 82 transitions, 22 of 2352 flow. [2020-01-16 21:46:58,557 INFO L478 AbstractCegarLoop]: Abstraction has has 127 places, 82 transitions [2020-01-16 21:46:58,557 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:58,626 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:46:58,627 INFO L130 PetriNetUnfolder]: For 11927/11940 co-relation queries the response was YES. [2020-01-16 21:46:58,627 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:58,627 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:58,627 INFO L426 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:58,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:58,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1602738831, now seen corresponding path program 14 times [2020-01-16 21:46:58,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:58,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793608856] [2020-01-16 21:46:58,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:58,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793608856] [2020-01-16 21:46:58,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:58,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:58,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740068135] [2020-01-16 21:46:58,758 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:58,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:58,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:58,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:58,759 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:58,759 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 82 transitions. Second operand 6 states. [2020-01-16 21:46:58,759 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:58,759 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:58,760 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:58,926 INFO L129 PetriNetUnfolder]: 22/172 cut-off events. [2020-01-16 21:46:58,927 INFO L130 PetriNetUnfolder]: For 13561/13785 co-relation queries the response was YES. [2020-01-16 21:46:58,930 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 172 events. 22/172 cut-off events. For 13561/13785 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1152 event pairs. 10/179 useless extension candidates. Maximal degree in co-relation 1189. Up to 32 conditions per place. [2020-01-16 21:46:58,931 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 34 selfloop transitions, 50 changer transitions [2020-01-16 21:46:58,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:58,933 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:58,933 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:58,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:58,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:58,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:58,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:58,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:58,935 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:58,936 INFO L174 Difference]: Start difference. First operand has 127 places, 82 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:58,940 INFO L199 Difference]: Finished difference. Result has 134 places, 84 transitions [2020-01-16 21:46:58,941 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2536, PETRI_PLACES=134, PETRI_TRANSITIONS=84} [2020-01-16 21:46:58,942 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 134 places, 84 transitions [2020-01-16 21:46:58,942 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 134 places, 84 transitions [2020-01-16 21:46:59,015 INFO L129 PetriNetUnfolder]: 21/170 cut-off events. [2020-01-16 21:46:59,015 INFO L130 PetriNetUnfolder]: For 13452/13465 co-relation queries the response was YES. [2020-01-16 21:46:59,019 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 170 events. 21/170 cut-off events. For 13452/13465 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1171 event pairs. 1/168 useless extension candidates. Maximal degree in co-relation 1159. Up to 28 conditions per place. [2020-01-16 21:46:59,021 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 134 places, 0 of 84 transitions, 22 of 2536 flow. [2020-01-16 21:46:59,021 INFO L478 AbstractCegarLoop]: Abstraction has has 133 places, 84 transitions [2020-01-16 21:46:59,021 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:59,107 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:46:59,108 INFO L130 PetriNetUnfolder]: For 13602/13629 co-relation queries the response was YES. [2020-01-16 21:46:59,108 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:59,108 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:59,108 INFO L426 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:59,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:59,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1683142233, now seen corresponding path program 15 times [2020-01-16 21:46:59,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:59,109 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535859627] [2020-01-16 21:46:59,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:59,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535859627] [2020-01-16 21:46:59,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:59,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:59,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242755912] [2020-01-16 21:46:59,219 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:59,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:59,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:59,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:59,220 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:59,220 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 84 transitions. Second operand 6 states. [2020-01-16 21:46:59,220 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:59,220 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:59,220 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:59,374 INFO L129 PetriNetUnfolder]: 22/171 cut-off events. [2020-01-16 21:46:59,375 INFO L130 PetriNetUnfolder]: For 14878/15023 co-relation queries the response was YES. [2020-01-16 21:46:59,381 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 171 events. 22/171 cut-off events. For 14878/15023 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1143 event pairs. 10/180 useless extension candidates. Maximal degree in co-relation 1217. Up to 32 conditions per place. [2020-01-16 21:46:59,382 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 34 selfloop transitions, 51 changer transitions [2020-01-16 21:46:59,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:59,385 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:59,385 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:59,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:59,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:59,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:59,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:59,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:59,387 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:59,388 INFO L174 Difference]: Start difference. First operand has 133 places, 84 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:59,390 INFO L199 Difference]: Finished difference. Result has 141 places, 87 transitions [2020-01-16 21:46:59,390 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2768, PETRI_PLACES=141, PETRI_TRANSITIONS=87} [2020-01-16 21:46:59,390 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 141 places, 87 transitions [2020-01-16 21:46:59,390 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 141 places, 87 transitions [2020-01-16 21:46:59,454 INFO L129 PetriNetUnfolder]: 21/169 cut-off events. [2020-01-16 21:46:59,454 INFO L130 PetriNetUnfolder]: For 15489/15520 co-relation queries the response was YES. [2020-01-16 21:46:59,457 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 169 events. 21/169 cut-off events. For 15489/15520 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1152 event pairs. 0/166 useless extension candidates. Maximal degree in co-relation 1206. Up to 28 conditions per place. [2020-01-16 21:46:59,459 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 141 places, 0 of 87 transitions, 22 of 2768 flow. [2020-01-16 21:46:59,459 INFO L478 AbstractCegarLoop]: Abstraction has has 140 places, 87 transitions [2020-01-16 21:46:59,459 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:46:59,513 INFO L129 PetriNetUnfolder]: 21/161 cut-off events. [2020-01-16 21:46:59,513 INFO L130 PetriNetUnfolder]: For 15339/15356 co-relation queries the response was YES. [2020-01-16 21:46:59,514 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:59,514 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:59,514 INFO L426 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:46:59,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:59,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1916397161, now seen corresponding path program 16 times [2020-01-16 21:46:59,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:59,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338109686] [2020-01-16 21:46:59,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:46:59,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338109686] [2020-01-16 21:46:59,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:59,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:46:59,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471348610] [2020-01-16 21:46:59,621 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:46:59,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:59,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:46:59,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:46:59,622 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:46:59,623 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 87 transitions. Second operand 6 states. [2020-01-16 21:46:59,623 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:59,623 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:46:59,623 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:59,828 INFO L129 PetriNetUnfolder]: 22/170 cut-off events. [2020-01-16 21:46:59,828 INFO L130 PetriNetUnfolder]: For 16730/16880 co-relation queries the response was YES. [2020-01-16 21:46:59,832 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 170 events. 22/170 cut-off events. For 16730/16880 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1141 event pairs. 10/179 useless extension candidates. Maximal degree in co-relation 1263. Up to 32 conditions per place. [2020-01-16 21:46:59,834 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 35 selfloop transitions, 48 changer transitions [2020-01-16 21:46:59,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:46:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:46:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:46:59,835 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:46:59,836 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:46:59,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:46:59,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:59,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:46:59,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:46:59,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:46:59,838 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:46:59,838 INFO L174 Difference]: Start difference. First operand has 140 places, 87 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:46:59,840 INFO L199 Difference]: Finished difference. Result has 146 places, 87 transitions [2020-01-16 21:46:59,840 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2864, PETRI_PLACES=146, PETRI_TRANSITIONS=87} [2020-01-16 21:46:59,841 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 146 places, 87 transitions [2020-01-16 21:46:59,841 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 146 places, 87 transitions [2020-01-16 21:46:59,950 INFO L129 PetriNetUnfolder]: 21/168 cut-off events. [2020-01-16 21:46:59,950 INFO L130 PetriNetUnfolder]: For 16852/16869 co-relation queries the response was YES. [2020-01-16 21:46:59,956 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 168 events. 21/168 cut-off events. For 16852/16869 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1144 event pairs. 1/166 useless extension candidates. Maximal degree in co-relation 1221. Up to 28 conditions per place. [2020-01-16 21:46:59,958 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 146 places, 0 of 87 transitions, 22 of 2864 flow. [2020-01-16 21:46:59,959 INFO L478 AbstractCegarLoop]: Abstraction has has 145 places, 87 transitions [2020-01-16 21:46:59,959 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:47:00,044 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:47:00,045 INFO L130 PetriNetUnfolder]: For 16852/16869 co-relation queries the response was YES. [2020-01-16 21:47:00,045 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:00,045 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:00,045 INFO L426 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:47:00,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:00,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1374394767, now seen corresponding path program 17 times [2020-01-16 21:47:00,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:00,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666981036] [2020-01-16 21:47:00,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:47:00,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666981036] [2020-01-16 21:47:00,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:00,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:47:00,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526837132] [2020-01-16 21:47:00,200 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:47:00,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:00,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:47:00,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:47:00,201 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:47:00,203 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 87 transitions. Second operand 6 states. [2020-01-16 21:47:00,203 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:00,204 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:47:00,204 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:00,462 INFO L129 PetriNetUnfolder]: 22/169 cut-off events. [2020-01-16 21:47:00,463 INFO L130 PetriNetUnfolder]: For 18319/18459 co-relation queries the response was YES. [2020-01-16 21:47:00,468 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1536 conditions, 169 events. 22/169 cut-off events. For 18319/18459 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1140 event pairs. 3/171 useless extension candidates. Maximal degree in co-relation 1277. Up to 31 conditions per place. [2020-01-16 21:47:00,470 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 30 selfloop transitions, 52 changer transitions [2020-01-16 21:47:00,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:47:00,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:47:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2020-01-16 21:47:00,473 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2020-01-16 21:47:00,473 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2020-01-16 21:47:00,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2020-01-16 21:47:00,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:00,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2020-01-16 21:47:00,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:47:00,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:47:00,479 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:47:00,479 INFO L174 Difference]: Start difference. First operand has 145 places, 87 transitions. Second operand 6 states and 191 transitions. [2020-01-16 21:47:00,482 INFO L199 Difference]: Finished difference. Result has 152 places, 88 transitions [2020-01-16 21:47:00,482 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2842, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3022, PETRI_PLACES=152, PETRI_TRANSITIONS=88} [2020-01-16 21:47:00,483 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 152 places, 88 transitions [2020-01-16 21:47:00,483 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 152 places, 88 transitions [2020-01-16 21:47:00,577 INFO L129 PetriNetUnfolder]: 21/167 cut-off events. [2020-01-16 21:47:00,577 INFO L130 PetriNetUnfolder]: For 18608/18625 co-relation queries the response was YES. [2020-01-16 21:47:00,582 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 167 events. 21/167 cut-off events. For 18608/18625 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1137 event pairs. 1/165 useless extension candidates. Maximal degree in co-relation 1242. Up to 28 conditions per place. [2020-01-16 21:47:00,586 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 152 places, 0 of 88 transitions, 22 of 3022 flow. [2020-01-16 21:47:00,586 INFO L478 AbstractCegarLoop]: Abstraction has has 151 places, 88 transitions [2020-01-16 21:47:00,586 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:47:00,650 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:47:00,650 INFO L130 PetriNetUnfolder]: For 18608/18625 co-relation queries the response was YES. [2020-01-16 21:47:00,651 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:00,651 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:00,651 INFO L426 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:47:00,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:00,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1239313505, now seen corresponding path program 18 times [2020-01-16 21:47:00,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:00,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336956060] [2020-01-16 21:47:00,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:47:00,771 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336956060] [2020-01-16 21:47:00,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:00,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:47:00,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46936578] [2020-01-16 21:47:00,772 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:47:00,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:00,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:47:00,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:47:00,773 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:47:00,774 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 88 transitions. Second operand 6 states. [2020-01-16 21:47:00,774 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:00,774 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:47:00,774 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:00,946 INFO L129 PetriNetUnfolder]: 22/168 cut-off events. [2020-01-16 21:47:00,947 INFO L130 PetriNetUnfolder]: For 20202/20342 co-relation queries the response was YES. [2020-01-16 21:47:00,951 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1567 conditions, 168 events. 22/168 cut-off events. For 20202/20342 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1120 event pairs. 21/187 useless extension candidates. Maximal degree in co-relation 1296. Up to 30 conditions per place. [2020-01-16 21:47:00,952 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 31 selfloop transitions, 52 changer transitions [2020-01-16 21:47:00,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:47:00,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:47:00,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2020-01-16 21:47:00,953 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2020-01-16 21:47:00,954 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2020-01-16 21:47:00,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2020-01-16 21:47:00,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:00,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2020-01-16 21:47:00,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:47:00,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:47:00,956 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:47:00,956 INFO L174 Difference]: Start difference. First operand has 151 places, 88 transitions. Second operand 6 states and 191 transitions. [2020-01-16 21:47:00,958 INFO L199 Difference]: Finished difference. Result has 158 places, 89 transitions [2020-01-16 21:47:00,958 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3000, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3173, PETRI_PLACES=158, PETRI_TRANSITIONS=89} [2020-01-16 21:47:00,958 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 158 places, 89 transitions [2020-01-16 21:47:00,958 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 158 places, 89 transitions [2020-01-16 21:47:01,032 INFO L129 PetriNetUnfolder]: 21/166 cut-off events. [2020-01-16 21:47:01,033 INFO L130 PetriNetUnfolder]: For 20457/20474 co-relation queries the response was YES. [2020-01-16 21:47:01,037 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 166 events. 21/166 cut-off events. For 20457/20474 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1127 event pairs. 1/164 useless extension candidates. Maximal degree in co-relation 1261. Up to 28 conditions per place. [2020-01-16 21:47:01,039 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 158 places, 0 of 89 transitions, 22 of 3173 flow. [2020-01-16 21:47:01,039 INFO L478 AbstractCegarLoop]: Abstraction has has 157 places, 89 transitions [2020-01-16 21:47:01,039 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:47:01,105 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:47:01,105 INFO L130 PetriNetUnfolder]: For 20633/20664 co-relation queries the response was YES. [2020-01-16 21:47:01,105 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:01,106 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:01,106 INFO L426 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:47:01,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:01,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2072996273, now seen corresponding path program 19 times [2020-01-16 21:47:01,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:01,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755064620] [2020-01-16 21:47:01,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:47:01,222 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755064620] [2020-01-16 21:47:01,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:01,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:47:01,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646448778] [2020-01-16 21:47:01,223 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:47:01,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:01,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:47:01,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:47:01,224 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:47:01,224 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 89 transitions. Second operand 6 states. [2020-01-16 21:47:01,225 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:01,225 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:47:01,225 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:01,441 INFO L129 PetriNetUnfolder]: 22/167 cut-off events. [2020-01-16 21:47:01,442 INFO L130 PetriNetUnfolder]: For 22102/22242 co-relation queries the response was YES. [2020-01-16 21:47:01,447 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1596 conditions, 167 events. 22/167 cut-off events. For 22102/22242 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1123 event pairs. 3/168 useless extension candidates. Maximal degree in co-relation 1313. Up to 30 conditions per place. [2020-01-16 21:47:01,448 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 32 selfloop transitions, 51 changer transitions [2020-01-16 21:47:01,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:47:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:47:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2020-01-16 21:47:01,450 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2020-01-16 21:47:01,450 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2020-01-16 21:47:01,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2020-01-16 21:47:01,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:01,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2020-01-16 21:47:01,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:47:01,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:47:01,452 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:47:01,452 INFO L174 Difference]: Start difference. First operand has 157 places, 89 transitions. Second operand 6 states and 191 transitions. [2020-01-16 21:47:01,454 INFO L199 Difference]: Finished difference. Result has 163 places, 89 transitions [2020-01-16 21:47:01,455 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3151, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3275, PETRI_PLACES=163, PETRI_TRANSITIONS=89} [2020-01-16 21:47:01,455 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 163 places, 89 transitions [2020-01-16 21:47:01,455 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 163 places, 89 transitions [2020-01-16 21:47:01,527 INFO L129 PetriNetUnfolder]: 21/165 cut-off events. [2020-01-16 21:47:01,527 INFO L130 PetriNetUnfolder]: For 22372/22401 co-relation queries the response was YES. [2020-01-16 21:47:01,531 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 165 events. 21/165 cut-off events. For 22372/22401 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1130 event pairs. 0/161 useless extension candidates. Maximal degree in co-relation 1273. Up to 28 conditions per place. [2020-01-16 21:47:01,533 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 163 places, 0 of 89 transitions, 22 of 3275 flow. [2020-01-16 21:47:01,533 INFO L478 AbstractCegarLoop]: Abstraction has has 162 places, 89 transitions [2020-01-16 21:47:01,533 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:47:01,606 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:47:01,606 INFO L130 PetriNetUnfolder]: For 22372/22401 co-relation queries the response was YES. [2020-01-16 21:47:01,607 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:01,607 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:01,607 INFO L426 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:47:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:01,607 INFO L82 PathProgramCache]: Analyzing trace with hash 687611539, now seen corresponding path program 20 times [2020-01-16 21:47:01,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:01,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647636126] [2020-01-16 21:47:01,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:01,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:47:01,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647636126] [2020-01-16 21:47:01,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:01,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:47:01,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946817948] [2020-01-16 21:47:01,727 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:47:01,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:01,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:47:01,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:47:01,729 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:47:01,729 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 89 transitions. Second operand 6 states. [2020-01-16 21:47:01,729 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:01,729 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:47:01,730 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:01,974 INFO L129 PetriNetUnfolder]: 22/166 cut-off events. [2020-01-16 21:47:01,974 INFO L130 PetriNetUnfolder]: For 23936/24074 co-relation queries the response was YES. [2020-01-16 21:47:01,978 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 166 events. 22/166 cut-off events. For 23936/24074 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1123 event pairs. 10/175 useless extension candidates. Maximal degree in co-relation 1323. Up to 29 conditions per place. [2020-01-16 21:47:01,980 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 34 selfloop transitions, 50 changer transitions [2020-01-16 21:47:01,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:47:01,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:47:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2020-01-16 21:47:01,981 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2020-01-16 21:47:01,981 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2020-01-16 21:47:01,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2020-01-16 21:47:01,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:01,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2020-01-16 21:47:01,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:47:01,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:47:01,983 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:47:01,983 INFO L174 Difference]: Start difference. First operand has 162 places, 89 transitions. Second operand 6 states and 191 transitions. [2020-01-16 21:47:01,985 INFO L199 Difference]: Finished difference. Result has 168 places, 89 transitions [2020-01-16 21:47:01,985 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3253, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3375, PETRI_PLACES=168, PETRI_TRANSITIONS=89} [2020-01-16 21:47:01,985 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 168 places, 89 transitions [2020-01-16 21:47:01,986 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 168 places, 89 transitions [2020-01-16 21:47:02,056 INFO L129 PetriNetUnfolder]: 21/164 cut-off events. [2020-01-16 21:47:02,057 INFO L130 PetriNetUnfolder]: For 24097/24125 co-relation queries the response was YES. [2020-01-16 21:47:02,061 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 164 events. 21/164 cut-off events. For 24097/24125 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1123 event pairs. 0/160 useless extension candidates. Maximal degree in co-relation 1278. Up to 28 conditions per place. [2020-01-16 21:47:02,063 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 168 places, 0 of 89 transitions, 22 of 3375 flow. [2020-01-16 21:47:02,063 INFO L478 AbstractCegarLoop]: Abstraction has has 167 places, 89 transitions [2020-01-16 21:47:02,063 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:47:02,130 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:47:02,130 INFO L130 PetriNetUnfolder]: For 24485/24545 co-relation queries the response was YES. [2020-01-16 21:47:02,130 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:02,130 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:02,131 INFO L426 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:47:02,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:02,131 INFO L82 PathProgramCache]: Analyzing trace with hash 970316883, now seen corresponding path program 21 times [2020-01-16 21:47:02,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:02,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695789602] [2020-01-16 21:47:02,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:02,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:47:02,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695789602] [2020-01-16 21:47:02,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:02,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:47:02,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860218961] [2020-01-16 21:47:02,232 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:47:02,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:02,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:47:02,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:47:02,233 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:47:02,233 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 89 transitions. Second operand 6 states. [2020-01-16 21:47:02,233 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:02,233 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:47:02,233 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:02,416 INFO L129 PetriNetUnfolder]: 23/181 cut-off events. [2020-01-16 21:47:02,417 INFO L130 PetriNetUnfolder]: For 28804/29023 co-relation queries the response was YES. [2020-01-16 21:47:02,421 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1785 conditions, 181 events. 23/181 cut-off events. For 28804/29023 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1261 event pairs. 10/189 useless extension candidates. Maximal degree in co-relation 1494. Up to 32 conditions per place. [2020-01-16 21:47:02,422 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 35 selfloop transitions, 55 changer transitions [2020-01-16 21:47:02,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:47:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:47:02,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2020-01-16 21:47:02,424 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2020-01-16 21:47:02,424 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2020-01-16 21:47:02,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2020-01-16 21:47:02,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:02,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2020-01-16 21:47:02,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:47:02,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:47:02,426 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:47:02,426 INFO L174 Difference]: Start difference. First operand has 167 places, 89 transitions. Second operand 6 states and 191 transitions. [2020-01-16 21:47:02,428 INFO L199 Difference]: Finished difference. Result has 176 places, 95 transitions [2020-01-16 21:47:02,428 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3353, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3818, PETRI_PLACES=176, PETRI_TRANSITIONS=95} [2020-01-16 21:47:02,428 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 176 places, 95 transitions [2020-01-16 21:47:02,429 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 176 places, 95 transitions [2020-01-16 21:47:02,505 INFO L129 PetriNetUnfolder]: 23/181 cut-off events. [2020-01-16 21:47:02,505 INFO L130 PetriNetUnfolder]: For 29772/29829 co-relation queries the response was YES. [2020-01-16 21:47:02,510 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1800 conditions, 181 events. 23/181 cut-off events. For 29772/29829 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1271 event pairs. 0/177 useless extension candidates. Maximal degree in co-relation 1501. Up to 30 conditions per place. [2020-01-16 21:47:02,512 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 176 places, 0 of 95 transitions, 24 of 3818 flow. [2020-01-16 21:47:02,512 INFO L478 AbstractCegarLoop]: Abstraction has has 175 places, 95 transitions [2020-01-16 21:47:02,512 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:47:02,610 INFO L129 PetriNetUnfolder]: 23/177 cut-off events. [2020-01-16 21:47:02,610 INFO L130 PetriNetUnfolder]: For 30015/30103 co-relation queries the response was YES. [2020-01-16 21:47:02,610 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:02,610 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:02,611 INFO L426 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:47:02,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:02,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1520787943, now seen corresponding path program 22 times [2020-01-16 21:47:02,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:02,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678574040] [2020-01-16 21:47:02,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:47:02,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678574040] [2020-01-16 21:47:02,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:02,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:47:02,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144563232] [2020-01-16 21:47:02,715 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:47:02,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:02,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:47:02,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:47:02,716 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:47:02,716 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 95 transitions. Second operand 6 states. [2020-01-16 21:47:02,716 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:02,716 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:47:02,716 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:02,905 INFO L129 PetriNetUnfolder]: 23/180 cut-off events. [2020-01-16 21:47:02,905 INFO L130 PetriNetUnfolder]: For 30970/31090 co-relation queries the response was YES. [2020-01-16 21:47:02,909 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 180 events. 23/180 cut-off events. For 30970/31090 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1247 event pairs. 8/187 useless extension candidates. Maximal degree in co-relation 1539. Up to 31 conditions per place. [2020-01-16 21:47:02,910 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 35 selfloop transitions, 56 changer transitions [2020-01-16 21:47:02,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:47:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:47:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2020-01-16 21:47:02,911 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2020-01-16 21:47:02,912 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2020-01-16 21:47:02,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2020-01-16 21:47:02,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:02,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2020-01-16 21:47:02,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:47:02,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:47:02,913 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:47:02,913 INFO L174 Difference]: Start difference. First operand has 175 places, 95 transitions. Second operand 6 states and 191 transitions. [2020-01-16 21:47:02,915 INFO L199 Difference]: Finished difference. Result has 183 places, 97 transitions [2020-01-16 21:47:02,916 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3794, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4053, PETRI_PLACES=183, PETRI_TRANSITIONS=97} [2020-01-16 21:47:02,916 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 183 places, 97 transitions [2020-01-16 21:47:02,916 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 183 places, 97 transitions [2020-01-16 21:47:02,993 INFO L129 PetriNetUnfolder]: 23/180 cut-off events. [2020-01-16 21:47:02,993 INFO L130 PetriNetUnfolder]: For 32688/32780 co-relation queries the response was YES. [2020-01-16 21:47:02,997 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 180 events. 23/180 cut-off events. For 32688/32780 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1250 event pairs. 1/177 useless extension candidates. Maximal degree in co-relation 1537. Up to 30 conditions per place. [2020-01-16 21:47:02,999 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 183 places, 0 of 97 transitions, 24 of 4053 flow. [2020-01-16 21:47:02,999 INFO L478 AbstractCegarLoop]: Abstraction has has 182 places, 97 transitions [2020-01-16 21:47:02,999 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:47:03,079 INFO L129 PetriNetUnfolder]: 23/178 cut-off events. [2020-01-16 21:47:03,080 INFO L130 PetriNetUnfolder]: For 31999/32027 co-relation queries the response was YES. [2020-01-16 21:47:03,080 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:03,080 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:03,080 INFO L426 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:47:03,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:03,080 INFO L82 PathProgramCache]: Analyzing trace with hash -316884957, now seen corresponding path program 23 times [2020-01-16 21:47:03,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:03,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247203266] [2020-01-16 21:47:03,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:47:03,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247203266] [2020-01-16 21:47:03,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:03,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:47:03,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21504538] [2020-01-16 21:47:03,185 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:47:03,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:03,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:47:03,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:47:03,186 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:47:03,186 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 97 transitions. Second operand 6 states. [2020-01-16 21:47:03,186 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:03,186 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:47:03,186 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:03,410 INFO L129 PetriNetUnfolder]: 23/179 cut-off events. [2020-01-16 21:47:03,410 INFO L130 PetriNetUnfolder]: For 33599/33719 co-relation queries the response was YES. [2020-01-16 21:47:03,414 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 179 events. 23/179 cut-off events. For 33599/33719 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1238 event pairs. 8/186 useless extension candidates. Maximal degree in co-relation 1573. Up to 31 conditions per place. [2020-01-16 21:47:03,415 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 34 selfloop transitions, 56 changer transitions [2020-01-16 21:47:03,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:47:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:47:03,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2020-01-16 21:47:03,417 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2020-01-16 21:47:03,417 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 190 transitions. [2020-01-16 21:47:03,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 190 transitions. [2020-01-16 21:47:03,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:03,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 190 transitions. [2020-01-16 21:47:03,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:47:03,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:47:03,418 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:47:03,418 INFO L174 Difference]: Start difference. First operand has 182 places, 97 transitions. Second operand 6 states and 190 transitions. [2020-01-16 21:47:03,421 INFO L199 Difference]: Finished difference. Result has 188 places, 97 transitions [2020-01-16 21:47:03,421 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4029, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4165, PETRI_PLACES=188, PETRI_TRANSITIONS=97} [2020-01-16 21:47:03,421 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 188 places, 97 transitions [2020-01-16 21:47:03,421 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 188 places, 97 transitions [2020-01-16 21:47:03,498 INFO L129 PetriNetUnfolder]: 23/179 cut-off events. [2020-01-16 21:47:03,499 INFO L130 PetriNetUnfolder]: For 34131/34158 co-relation queries the response was YES. [2020-01-16 21:47:03,502 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 179 events. 23/179 cut-off events. For 34131/34158 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1256 event pairs. 0/177 useless extension candidates. Maximal degree in co-relation 1541. Up to 30 conditions per place. [2020-01-16 21:47:03,504 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 188 places, 0 of 97 transitions, 24 of 4165 flow. [2020-01-16 21:47:03,505 INFO L478 AbstractCegarLoop]: Abstraction has has 187 places, 97 transitions [2020-01-16 21:47:03,505 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:47:03,617 INFO L129 PetriNetUnfolder]: 23/178 cut-off events. [2020-01-16 21:47:03,617 INFO L130 PetriNetUnfolder]: For 33969/33983 co-relation queries the response was YES. [2020-01-16 21:47:03,617 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:03,617 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:03,617 INFO L426 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:47:03,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:03,618 INFO L82 PathProgramCache]: Analyzing trace with hash 838545747, now seen corresponding path program 24 times [2020-01-16 21:47:03,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:03,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128636480] [2020-01-16 21:47:03,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:47:03,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128636480] [2020-01-16 21:47:03,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:03,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:47:03,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452078120] [2020-01-16 21:47:03,713 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:47:03,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:03,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:47:03,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:47:03,714 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:47:03,714 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 97 transitions. Second operand 6 states. [2020-01-16 21:47:03,714 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:03,715 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:47:03,715 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:03,871 INFO L129 PetriNetUnfolder]: 23/178 cut-off events. [2020-01-16 21:47:03,871 INFO L130 PetriNetUnfolder]: For 35853/35973 co-relation queries the response was YES. [2020-01-16 21:47:03,876 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 178 events. 23/178 cut-off events. For 35853/35973 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1246 event pairs. 8/185 useless extension candidates. Maximal degree in co-relation 1575. Up to 30 conditions per place. [2020-01-16 21:47:03,878 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 33 selfloop transitions, 56 changer transitions [2020-01-16 21:47:03,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:47:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:47:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2020-01-16 21:47:03,879 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7875 [2020-01-16 21:47:03,879 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 189 transitions. [2020-01-16 21:47:03,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 189 transitions. [2020-01-16 21:47:03,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:03,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 189 transitions. [2020-01-16 21:47:03,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:47:03,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:47:03,883 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:47:03,883 INFO L174 Difference]: Start difference. First operand has 187 places, 97 transitions. Second operand 6 states and 189 transitions. [2020-01-16 21:47:03,885 INFO L199 Difference]: Finished difference. Result has 192 places, 96 transitions [2020-01-16 21:47:03,886 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4141, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4203, PETRI_PLACES=192, PETRI_TRANSITIONS=96} [2020-01-16 21:47:03,886 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 192 places, 96 transitions [2020-01-16 21:47:03,886 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 192 places, 96 transitions [2020-01-16 21:47:03,970 INFO L129 PetriNetUnfolder]: 23/178 cut-off events. [2020-01-16 21:47:03,970 INFO L130 PetriNetUnfolder]: For 35198/35213 co-relation queries the response was YES. [2020-01-16 21:47:03,974 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 178 events. 23/178 cut-off events. For 35198/35213 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1253 event pairs. 0/177 useless extension candidates. Maximal degree in co-relation 1543. Up to 30 conditions per place. [2020-01-16 21:47:03,976 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 2 of 192 places, 0 of 96 transitions, 24 of 4203 flow. [2020-01-16 21:47:03,976 INFO L478 AbstractCegarLoop]: Abstraction has has 190 places, 96 transitions [2020-01-16 21:47:03,976 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:47:04,055 INFO L129 PetriNetUnfolder]: 23/178 cut-off events. [2020-01-16 21:47:04,055 INFO L130 PetriNetUnfolder]: For 35360/35388 co-relation queries the response was YES. [2020-01-16 21:47:04,059 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 09:47:04 BasicIcfg [2020-01-16 21:47:04,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 21:47:04,061 INFO L168 Benchmark]: Toolchain (without parser) took 11586.99 ms. Allocated memory was 141.0 MB in the beginning and 446.7 MB in the end (delta: 305.7 MB). Free memory was 123.0 MB in the beginning and 211.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 216.8 MB. Max. memory is 7.1 GB. [2020-01-16 21:47:04,062 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.41 ms. Allocated memory is still 141.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-01-16 21:47:04,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.60 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 120.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-01-16 21:47:04,063 INFO L168 Benchmark]: Boogie Preprocessor took 21.19 ms. Allocated memory is still 141.0 MB. Free memory was 120.9 MB in the beginning and 120.0 MB in the end (delta: 855.6 kB). Peak memory consumption was 855.6 kB. Max. memory is 7.1 GB. [2020-01-16 21:47:04,063 INFO L168 Benchmark]: RCFGBuilder took 248.68 ms. Allocated memory is still 141.0 MB. Free memory was 120.0 MB in the beginning and 109.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-01-16 21:47:04,064 INFO L168 Benchmark]: TraceAbstraction took 11277.22 ms. Allocated memory was 141.0 MB in the beginning and 446.7 MB in the end (delta: 305.7 MB). Free memory was 108.9 MB in the beginning and 211.9 MB in the end (delta: -103.0 MB). Peak memory consumption was 202.7 MB. Max. memory is 7.1 GB. [2020-01-16 21:47:04,066 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.41 ms. Allocated memory is still 141.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.60 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 120.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.19 ms. Allocated memory is still 141.0 MB. Free memory was 120.9 MB in the beginning and 120.0 MB in the end (delta: 855.6 kB). Peak memory consumption was 855.6 kB. Max. memory is 7.1 GB. * RCFGBuilder took 248.68 ms. Allocated memory is still 141.0 MB. Free memory was 120.0 MB in the beginning and 109.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11277.22 ms. Allocated memory was 141.0 MB in the beginning and 446.7 MB in the end (delta: 305.7 MB). Free memory was 108.9 MB in the beginning and 211.9 MB in the end (delta: -103.0 MB). Peak memory consumption was 202.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.2s, 36 ProgramPointsBefore, 30 ProgramPointsAfterwards, 35 TransitionsBefore, 30 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 2 FixpointIterations, 1 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, 5 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: 11.0s, OverallIterations: 27, TraceHistogramMax: 1, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 233 SDtfs, 280 SDslu, 152 SDs, 0 SdLazy, 478 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s 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=190occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 27 MinimizatonAttempts, 30 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 44316 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...