/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_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 21:46:54,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 21:46:54,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 21:46:54,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 21:46:54,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 21:46:54,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 21:46:54,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 21:46:54,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 21:46:54,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 21:46:54,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 21:46:54,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 21:46:54,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 21:46:54,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 21:46:54,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 21:46:54,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 21:46:54,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 21:46:54,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 21:46:54,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 21:46:54,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 21:46:54,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 21:46:54,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 21:46:54,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 21:46:54,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 21:46:54,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 21:46:54,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 21:46:54,963 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 21:46:54,987 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 21:46:54,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 21:46:54,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 21:46:54,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 21:46:54,990 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 21:46:54,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 21:46:54,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 21:46:54,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 21:46:54,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 21:46:54,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 21:46:54,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 21:46:54,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 21:46:54,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 21:46:54,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 21:46:54,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 21:46:54,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 21:46:54,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 21:46:54,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 21:46:54,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 21:46:54,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 21:46:54,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 21:46:54,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 21:46:54,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 21:46:54,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 21:46:54,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 21:46:54,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 21:46:54,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 21:46:54,996 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-01-16 21:46:54,996 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-01-16 21:46:54,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 21:46:55,262 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 21:46:55,276 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 21:46:55,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 21:46:55,283 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 21:46:55,284 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 21:46:55,285 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2020-01-16 21:46:55,285 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2020-01-16 21:46:55,325 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 21:46:55,327 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 21:46:55,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 21:46:55,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 21:46:55,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 21:46:55,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:55" (1/1) ... [2020-01-16 21:46:55,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:55" (1/1) ... [2020-01-16 21:46:55,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 21:46:55,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 21:46:55,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 21:46:55,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 21:46:55,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:55" (1/1) ... [2020-01-16 21:46:55,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:55" (1/1) ... [2020-01-16 21:46:55,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:55" (1/1) ... [2020-01-16 21:46:55,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:55" (1/1) ... [2020-01-16 21:46:55,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:55" (1/1) ... [2020-01-16 21:46:55,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:55" (1/1) ... [2020-01-16 21:46:55,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:55" (1/1) ... [2020-01-16 21:46:55,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 21:46:55,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 21:46:55,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 21:46:55,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 21:46:55,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:55" (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 21:46:55,455 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 21:46:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 21:46:55,455 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 21:46:55,455 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 21:46:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 21:46:55,456 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 21:46:55,456 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 21:46:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 21:46:55,457 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 21:46:55,457 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 21:46:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 21:46:55,457 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 21:46:55,457 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 21:46:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 21:46:55,458 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 21:46:55,458 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 21:46:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 21:46:55,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 21:46:55,460 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 21:46:55,649 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 21:46:55,649 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 21:46:55,650 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 09:46:55 BoogieIcfgContainer [2020-01-16 21:46:55,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 21:46:55,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 21:46:55,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 21:46:55,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 21:46:55,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:46:55" (1/2) ... [2020-01-16 21:46:55,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2989f2da and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 09:46:55, skipping insertion in model container [2020-01-16 21:46:55,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 09:46:55" (2/2) ... [2020-01-16 21:46:55,659 INFO L109 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2020-01-16 21:46:55,670 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 21:46:55,679 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 21:46:55,681 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 21:46:55,894 INFO L250 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-01-16 21:46:55,920 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 21:46:55,921 INFO L375 AbstractCegarLoop]: Hoare is false [2020-01-16 21:46:55,921 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 21:46:55,921 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 21:46:55,921 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 21:46:55,921 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 21:46:55,922 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 21:46:55,922 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 21:46:55,942 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 48 transitions [2020-01-16 21:46:55,943 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions [2020-01-16 21:46:56,015 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2020-01-16 21:46:56,016 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-01-16 21:46:56,026 INFO L76 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 98 events. 49/98 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 321 event pairs. 0/97 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2020-01-16 21:46:56,030 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions [2020-01-16 21:46:56,085 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2020-01-16 21:46:56,085 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-01-16 21:46:56,087 INFO L76 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 98 events. 49/98 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 321 event pairs. 0/97 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2020-01-16 21:46:56,090 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 440 [2020-01-16 21:46:56,091 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-01-16 21:46:56,200 INFO L206 etLargeBlockEncoding]: Checked pairs total: 130 [2020-01-16 21:46:56,200 INFO L214 etLargeBlockEncoding]: Total number of compositions: 6 [2020-01-16 21:46:56,200 INFO L162 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 261 [2020-01-16 21:46:56,229 INFO L129 PetriNetUnfolder]: 49/90 cut-off events. [2020-01-16 21:46:56,229 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-01-16 21:46:56,230 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:56,231 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:56,231 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:46:56,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:56,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1055068329, now seen corresponding path program 1 times [2020-01-16 21:46:56,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:56,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201516094] [2020-01-16 21:46:56,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:56,391 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 21:46:56,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201516094] [2020-01-16 21:46:56,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:56,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:46:56,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035974703] [2020-01-16 21:46:56,405 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:46:56,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:56,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:46:56,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:46:56,425 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 54 [2020-01-16 21:46:56,427 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 42 transitions. Second operand 3 states. [2020-01-16 21:46:56,427 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:56,427 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 54 [2020-01-16 21:46:56,429 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:56,499 INFO L129 PetriNetUnfolder]: 33/71 cut-off events. [2020-01-16 21:46:56,499 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2020-01-16 21:46:56,501 INFO L76 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 71 events. 33/71 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 194 event pairs. 5/75 useless extension candidates. Maximal degree in co-relation 75. Up to 20 conditions per place. [2020-01-16 21:46:56,501 INFO L123 encePairwiseOnDemand]: 51/54 looper letters, 3 selfloop transitions, 3 changer transitions [2020-01-16 21:46:56,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:46:56,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:46:56,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2020-01-16 21:46:56,524 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2020-01-16 21:46:56,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2020-01-16 21:46:56,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2020-01-16 21:46:56,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:56,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2020-01-16 21:46:56,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:46:56,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:46:56,548 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:46:56,550 INFO L174 Difference]: Start difference. First operand has 37 places, 42 transitions. Second operand 3 states and 150 transitions. [2020-01-16 21:46:56,551 INFO L199 Difference]: Finished difference. Result has 39 places, 35 transitions [2020-01-16 21:46:56,554 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2020-01-16 21:46:56,556 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 39 places, 35 transitions [2020-01-16 21:46:56,556 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 39 places, 35 transitions [2020-01-16 21:46:56,569 INFO L129 PetriNetUnfolder]: 33/71 cut-off events. [2020-01-16 21:46:56,570 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2020-01-16 21:46:56,571 INFO L76 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 71 events. 33/71 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 173 event pairs. 0/70 useless extension candidates. Maximal degree in co-relation 130. Up to 20 conditions per place. [2020-01-16 21:46:56,573 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 6 of 39 places, 0 of 35 transitions, 1 of 155 flow. [2020-01-16 21:46:56,574 INFO L478 AbstractCegarLoop]: Abstraction has has 33 places, 35 transitions [2020-01-16 21:46:56,575 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:46:56,586 INFO L129 PetriNetUnfolder]: 33/69 cut-off events. [2020-01-16 21:46:56,586 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2020-01-16 21:46:56,586 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:56,586 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:56,587 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:46:56,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:56,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1416035941, now seen corresponding path program 1 times [2020-01-16 21:46:56,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:56,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636216021] [2020-01-16 21:46:56,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:56,624 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 21:46:56,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636216021] [2020-01-16 21:46:56,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:56,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:46:56,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239634315] [2020-01-16 21:46:56,627 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:46:56,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:56,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:46:56,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:46:56,629 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 54 [2020-01-16 21:46:56,629 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 35 transitions. Second operand 3 states. [2020-01-16 21:46:56,629 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:56,630 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 54 [2020-01-16 21:46:56,630 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:56,646 INFO L129 PetriNetUnfolder]: 8/32 cut-off events. [2020-01-16 21:46:56,646 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2020-01-16 21:46:56,647 INFO L76 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 32 events. 8/32 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs. 11/42 useless extension candidates. Maximal degree in co-relation 43. Up to 6 conditions per place. [2020-01-16 21:46:56,647 INFO L123 encePairwiseOnDemand]: 49/54 looper letters, 1 selfloop transitions, 5 changer transitions [2020-01-16 21:46:56,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:46:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:46:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2020-01-16 21:46:56,649 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2020-01-16 21:46:56,650 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2020-01-16 21:46:56,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2020-01-16 21:46:56,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:56,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2020-01-16 21:46:56,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:46:56,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:46:56,653 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:46:56,653 INFO L174 Difference]: Start difference. First operand has 33 places, 35 transitions. Second operand 3 states and 150 transitions. [2020-01-16 21:46:56,654 INFO L199 Difference]: Finished difference. Result has 35 places, 27 transitions [2020-01-16 21:46:56,654 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2020-01-16 21:46:56,655 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 35 places, 27 transitions [2020-01-16 21:46:56,655 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 35 places, 27 transitions [2020-01-16 21:46:56,661 INFO L129 PetriNetUnfolder]: 8/32 cut-off events. [2020-01-16 21:46:56,661 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-01-16 21:46:56,662 INFO L76 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 32 events. 8/32 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs. 0/31 useless extension candidates. Maximal degree in co-relation 46. Up to 6 conditions per place. [2020-01-16 21:46:56,662 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 35 places, 0 of 27 transitions, 1 of 116 flow. [2020-01-16 21:46:56,662 INFO L478 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions [2020-01-16 21:46:56,663 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:46:56,667 INFO L129 PetriNetUnfolder]: 8/30 cut-off events. [2020-01-16 21:46:56,668 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-01-16 21:46:56,668 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:56,668 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:56,668 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:46:56,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:56,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1960451749, now seen corresponding path program 1 times [2020-01-16 21:46:56,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:56,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192246376] [2020-01-16 21:46:56,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:56,714 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 21:46:56,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192246376] [2020-01-16 21:46:56,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:56,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:46:56,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796152295] [2020-01-16 21:46:56,716 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:46:56,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:56,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:46:56,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:46:56,718 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 54 [2020-01-16 21:46:56,718 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions. Second operand 3 states. [2020-01-16 21:46:56,718 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:56,719 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 54 [2020-01-16 21:46:56,719 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:56,737 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2020-01-16 21:46:56,737 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-01-16 21:46:56,737 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 19 events. 1/19 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 16 event pairs. 4/22 useless extension candidates. Maximal degree in co-relation 20. Up to 3 conditions per place. [2020-01-16 21:46:56,738 INFO L123 encePairwiseOnDemand]: 50/54 looper letters, 1 selfloop transitions, 4 changer transitions [2020-01-16 21:46:56,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:46:56,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:46:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2020-01-16 21:46:56,740 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9197530864197531 [2020-01-16 21:46:56,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2020-01-16 21:46:56,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2020-01-16 21:46:56,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:56,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2020-01-16 21:46:56,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:46:56,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:46:56,743 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:46:56,744 INFO L174 Difference]: Start difference. First operand has 34 places, 27 transitions. Second operand 3 states and 149 transitions. [2020-01-16 21:46:56,744 INFO L199 Difference]: Finished difference. Result has 36 places, 19 transitions [2020-01-16 21:46:56,744 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2020-01-16 21:46:56,745 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 36 places, 19 transitions [2020-01-16 21:46:56,746 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 36 places, 19 transitions [2020-01-16 21:46:56,749 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2020-01-16 21:46:56,752 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-01-16 21:46:56,752 INFO L76 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 19 events. 1/19 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs. 0/18 useless extension candidates. Maximal degree in co-relation 23. Up to 3 conditions per place. [2020-01-16 21:46:56,753 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 36 places, 0 of 19 transitions, 1 of 77 flow. [2020-01-16 21:46:56,753 INFO L478 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions [2020-01-16 21:46:56,753 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:46:56,762 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2020-01-16 21:46:56,762 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-01-16 21:46:56,763 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:56,763 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:56,764 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:46:56,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:56,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1557269531, now seen corresponding path program 1 times [2020-01-16 21:46:56,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:56,766 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267103396] [2020-01-16 21:46:56,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:57,076 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2020-01-16 21:46:57,242 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 21:46:57,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267103396] [2020-01-16 21:46:57,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:57,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:46:57,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794646363] [2020-01-16 21:46:57,245 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:46:57,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:57,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:46:57,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:46:57,249 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:46:57,250 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions. Second operand 7 states. [2020-01-16 21:46:57,250 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:57,250 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:46:57,250 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:57,411 INFO L129 PetriNetUnfolder]: 71/196 cut-off events. [2020-01-16 21:46:57,412 INFO L130 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2020-01-16 21:46:57,414 INFO L76 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 196 events. 71/196 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1133 event pairs. 0/179 useless extension candidates. Maximal degree in co-relation 354. Up to 41 conditions per place. [2020-01-16 21:46:57,414 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 15 selfloop transitions, 10 changer transitions [2020-01-16 21:46:57,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:46:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:46:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:46:57,419 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:46:57,419 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:46:57,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:46:57,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:57,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:46:57,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:46:57,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:46:57,424 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:46:57,424 INFO L174 Difference]: Start difference. First operand has 35 places, 19 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:46:57,425 INFO L199 Difference]: Finished difference. Result has 46 places, 27 transitions [2020-01-16 21:46:57,425 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=135, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2020-01-16 21:46:57,425 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 46 places, 27 transitions [2020-01-16 21:46:57,425 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 46 places, 27 transitions [2020-01-16 21:46:57,435 INFO L129 PetriNetUnfolder]: 7/52 cut-off events. [2020-01-16 21:46:57,435 INFO L130 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2020-01-16 21:46:57,436 INFO L76 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 52 events. 7/52 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 172 event pairs. 0/46 useless extension candidates. Maximal degree in co-relation 93. Up to 7 conditions per place. [2020-01-16 21:46:57,437 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 46 places, 0 of 27 transitions, 0 of 135 flow. [2020-01-16 21:46:57,437 INFO L478 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions [2020-01-16 21:46:57,437 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:46:57,454 INFO L129 PetriNetUnfolder]: 7/47 cut-off events. [2020-01-16 21:46:57,454 INFO L130 PetriNetUnfolder]: For 41/42 co-relation queries the response was YES. [2020-01-16 21:46:57,455 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:57,456 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:57,456 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:46:57,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:57,457 INFO L82 PathProgramCache]: Analyzing trace with hash -288481185, now seen corresponding path program 2 times [2020-01-16 21:46:57,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:57,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046050006] [2020-01-16 21:46:57,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:57,736 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 21:46:57,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046050006] [2020-01-16 21:46:57,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:57,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:46:57,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316666207] [2020-01-16 21:46:57,738 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:46:57,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:57,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:46:57,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:46:57,740 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:46:57,740 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions. Second operand 7 states. [2020-01-16 21:46:57,740 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:57,740 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:46:57,740 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:57,887 INFO L129 PetriNetUnfolder]: 74/230 cut-off events. [2020-01-16 21:46:57,887 INFO L130 PetriNetUnfolder]: For 299/301 co-relation queries the response was YES. [2020-01-16 21:46:57,889 INFO L76 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 230 events. 74/230 cut-off events. For 299/301 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1314 event pairs. 1/213 useless extension candidates. Maximal degree in co-relation 551. Up to 54 conditions per place. [2020-01-16 21:46:57,890 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 22 selfloop transitions, 19 changer transitions [2020-01-16 21:46:57,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:46:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:46:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:46:57,893 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:46:57,893 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:46:57,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:46:57,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:57,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:46:57,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:46:57,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:46:57,897 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:46:57,897 INFO L174 Difference]: Start difference. First operand has 46 places, 27 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:46:57,898 INFO L199 Difference]: Finished difference. Result has 57 places, 39 transitions [2020-01-16 21:46:57,898 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=57, PETRI_TRANSITIONS=39} [2020-01-16 21:46:57,898 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 57 places, 39 transitions [2020-01-16 21:46:57,898 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 39 transitions [2020-01-16 21:46:57,919 INFO L129 PetriNetUnfolder]: 18/114 cut-off events. [2020-01-16 21:46:57,920 INFO L130 PetriNetUnfolder]: For 225/231 co-relation queries the response was YES. [2020-01-16 21:46:57,921 INFO L76 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 114 events. 18/114 cut-off events. For 225/231 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 598 event pairs. 0/103 useless extension candidates. Maximal degree in co-relation 230. Up to 14 conditions per place. [2020-01-16 21:46:57,922 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 57 places, 0 of 39 transitions, 0 of 279 flow. [2020-01-16 21:46:57,922 INFO L478 AbstractCegarLoop]: Abstraction has has 57 places, 39 transitions [2020-01-16 21:46:57,922 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:46:57,941 INFO L129 PetriNetUnfolder]: 18/104 cut-off events. [2020-01-16 21:46:57,942 INFO L130 PetriNetUnfolder]: For 224/229 co-relation queries the response was YES. [2020-01-16 21:46:57,942 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:57,942 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:57,942 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:46:57,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:57,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1612510339, now seen corresponding path program 3 times [2020-01-16 21:46:57,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:57,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187730685] [2020-01-16 21:46:57,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:58,143 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 21:46:58,144 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187730685] [2020-01-16 21:46:58,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:58,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:46:58,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108325221] [2020-01-16 21:46:58,145 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:46:58,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:58,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:46:58,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:46:58,147 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:46:58,147 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 39 transitions. Second operand 7 states. [2020-01-16 21:46:58,147 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:58,148 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:46:58,148 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:58,315 INFO L129 PetriNetUnfolder]: 75/242 cut-off events. [2020-01-16 21:46:58,315 INFO L130 PetriNetUnfolder]: For 717/727 co-relation queries the response was YES. [2020-01-16 21:46:58,330 INFO L76 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 242 events. 75/242 cut-off events. For 717/727 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1412 event pairs. 1/225 useless extension candidates. Maximal degree in co-relation 692. Up to 54 conditions per place. [2020-01-16 21:46:58,331 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 22 selfloop transitions, 22 changer transitions [2020-01-16 21:46:58,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:46:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:46:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:46:58,333 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:46:58,333 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:46:58,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:46:58,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:58,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:46:58,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:46:58,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:46:58,336 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:46:58,336 INFO L174 Difference]: Start difference. First operand has 57 places, 39 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:46:58,337 INFO L199 Difference]: Finished difference. Result has 66 places, 43 transitions [2020-01-16 21:46:58,337 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=387, PETRI_PLACES=66, PETRI_TRANSITIONS=43} [2020-01-16 21:46:58,337 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 66 places, 43 transitions [2020-01-16 21:46:58,338 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 66 places, 43 transitions [2020-01-16 21:46:58,358 INFO L129 PetriNetUnfolder]: 22/135 cut-off events. [2020-01-16 21:46:58,359 INFO L130 PetriNetUnfolder]: For 452/457 co-relation queries the response was YES. [2020-01-16 21:46:58,360 INFO L76 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 135 events. 22/135 cut-off events. For 452/457 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 764 event pairs. 0/123 useless extension candidates. Maximal degree in co-relation 317. Up to 18 conditions per place. [2020-01-16 21:46:58,361 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 66 places, 0 of 43 transitions, 14 of 387 flow. [2020-01-16 21:46:58,362 INFO L478 AbstractCegarLoop]: Abstraction has has 65 places, 43 transitions [2020-01-16 21:46:58,362 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:46:58,380 INFO L129 PetriNetUnfolder]: 22/124 cut-off events. [2020-01-16 21:46:58,381 INFO L130 PetriNetUnfolder]: For 452/457 co-relation queries the response was YES. [2020-01-16 21:46:58,381 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:58,381 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:58,381 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:46:58,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:58,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1661404831, now seen corresponding path program 4 times [2020-01-16 21:46:58,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:58,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454682180] [2020-01-16 21:46:58,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:58,576 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 21:46:58,577 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454682180] [2020-01-16 21:46:58,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:58,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:46:58,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075604411] [2020-01-16 21:46:58,578 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:46:58,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:58,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:46:58,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:46:58,580 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:46:58,580 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 43 transitions. Second operand 7 states. [2020-01-16 21:46:58,580 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:58,580 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:46:58,580 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:58,784 INFO L129 PetriNetUnfolder]: 92/345 cut-off events. [2020-01-16 21:46:58,784 INFO L130 PetriNetUnfolder]: For 1520/1531 co-relation queries the response was YES. [2020-01-16 21:46:58,788 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 345 events. 92/345 cut-off events. For 1520/1531 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2373 event pairs. 1/327 useless extension candidates. Maximal degree in co-relation 1120. Up to 70 conditions per place. [2020-01-16 21:46:58,789 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 22 selfloop transitions, 34 changer transitions [2020-01-16 21:46:58,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:46:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:46:58,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:46:58,791 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:46:58,791 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:46:58,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:46:58,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:58,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:46:58,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:46:58,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:46:58,795 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:46:58,796 INFO L174 Difference]: Start difference. First operand has 65 places, 43 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:46:58,798 INFO L199 Difference]: Finished difference. Result has 76 places, 57 transitions [2020-01-16 21:46:58,798 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=657, PETRI_PLACES=76, PETRI_TRANSITIONS=57} [2020-01-16 21:46:58,799 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 76 places, 57 transitions [2020-01-16 21:46:58,801 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 57 transitions [2020-01-16 21:46:58,865 INFO L129 PetriNetUnfolder]: 39/228 cut-off events. [2020-01-16 21:46:58,865 INFO L130 PetriNetUnfolder]: For 1321/1322 co-relation queries the response was YES. [2020-01-16 21:46:58,869 INFO L76 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 228 events. 39/228 cut-off events. For 1321/1322 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1580 event pairs. 0/207 useless extension candidates. Maximal degree in co-relation 690. Up to 34 conditions per place. [2020-01-16 21:46:58,873 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 76 places, 0 of 57 transitions, 0 of 657 flow. [2020-01-16 21:46:58,874 INFO L478 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions [2020-01-16 21:46:58,874 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:46:58,934 INFO L129 PetriNetUnfolder]: 39/209 cut-off events. [2020-01-16 21:46:58,934 INFO L130 PetriNetUnfolder]: For 1321/1322 co-relation queries the response was YES. [2020-01-16 21:46:58,935 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:58,935 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:58,935 INFO L426 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:46:58,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:58,936 INFO L82 PathProgramCache]: Analyzing trace with hash 20275217, now seen corresponding path program 5 times [2020-01-16 21:46:58,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:58,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090631631] [2020-01-16 21:46:58,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:46:59,204 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 21:46:59,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090631631] [2020-01-16 21:46:59,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:46:59,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:46:59,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496544981] [2020-01-16 21:46:59,206 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:46:59,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:46:59,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:46:59,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:46:59,208 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:46:59,209 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions. Second operand 7 states. [2020-01-16 21:46:59,209 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:46:59,209 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:46:59,210 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:46:59,578 INFO L129 PetriNetUnfolder]: 109/487 cut-off events. [2020-01-16 21:46:59,578 INFO L130 PetriNetUnfolder]: For 3753/3791 co-relation queries the response was YES. [2020-01-16 21:46:59,583 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 487 events. 109/487 cut-off events. For 3753/3791 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3949 event pairs. 1/469 useless extension candidates. Maximal degree in co-relation 1811. Up to 84 conditions per place. [2020-01-16 21:46:59,584 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 30 selfloop transitions, 54 changer transitions [2020-01-16 21:46:59,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:46:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:46:59,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:46:59,586 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:46:59,586 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:46:59,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:46:59,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:46:59,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:46:59,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:46:59,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:46:59,589 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:46:59,589 INFO L174 Difference]: Start difference. First operand has 76 places, 57 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:46:59,592 INFO L199 Difference]: Finished difference. Result has 87 places, 81 transitions [2020-01-16 21:46:59,592 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1231, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2020-01-16 21:46:59,593 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 87 places, 81 transitions [2020-01-16 21:46:59,593 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 81 transitions [2020-01-16 21:46:59,714 INFO L129 PetriNetUnfolder]: 69/400 cut-off events. [2020-01-16 21:46:59,714 INFO L130 PetriNetUnfolder]: For 3729/3730 co-relation queries the response was YES. [2020-01-16 21:46:59,718 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1693 conditions, 400 events. 69/400 cut-off events. For 3729/3730 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3320 event pairs. 0/371 useless extension candidates. Maximal degree in co-relation 1468. Up to 58 conditions per place. [2020-01-16 21:46:59,720 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 87 places, 0 of 81 transitions, 0 of 1231 flow. [2020-01-16 21:46:59,720 INFO L478 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions [2020-01-16 21:46:59,721 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:46:59,813 INFO L129 PetriNetUnfolder]: 69/364 cut-off events. [2020-01-16 21:46:59,813 INFO L130 PetriNetUnfolder]: For 3737/3738 co-relation queries the response was YES. [2020-01-16 21:46:59,813 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:46:59,814 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:46:59,814 INFO L426 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:46:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:46:59,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1866192545, now seen corresponding path program 6 times [2020-01-16 21:46:59,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:46:59,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549084395] [2020-01-16 21:46:59,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:46:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:00,030 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 21:47:00,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549084395] [2020-01-16 21:47:00,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:00,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:00,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388754062] [2020-01-16 21:47:00,032 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:00,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:00,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:00,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:00,033 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:00,033 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions. Second operand 7 states. [2020-01-16 21:47:00,034 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:00,034 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:00,034 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:00,425 INFO L129 PetriNetUnfolder]: 137/694 cut-off events. [2020-01-16 21:47:00,426 INFO L130 PetriNetUnfolder]: For 7754/7801 co-relation queries the response was YES. [2020-01-16 21:47:00,435 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 694 events. 137/694 cut-off events. For 7754/7801 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6386 event pairs. 1/676 useless extension candidates. Maximal degree in co-relation 2893. Up to 109 conditions per place. [2020-01-16 21:47:00,436 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 31 selfloop transitions, 80 changer transitions [2020-01-16 21:47:00,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:00,439 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:00,439 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:00,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:00,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:00,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:00,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:00,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:00,442 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:00,442 INFO L174 Difference]: Start difference. First operand has 87 places, 81 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:00,444 INFO L199 Difference]: Finished difference. Result has 98 places, 110 transitions [2020-01-16 21:47:00,444 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2076, PETRI_PLACES=98, PETRI_TRANSITIONS=110} [2020-01-16 21:47:00,445 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 98 places, 110 transitions [2020-01-16 21:47:00,445 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 98 places, 110 transitions [2020-01-16 21:47:00,683 INFO L129 PetriNetUnfolder]: 109/628 cut-off events. [2020-01-16 21:47:00,684 INFO L130 PetriNetUnfolder]: For 8419/8438 co-relation queries the response was YES. [2020-01-16 21:47:00,694 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2947 conditions, 628 events. 109/628 cut-off events. For 8419/8438 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5919 event pairs. 3/602 useless extension candidates. Maximal degree in co-relation 2643. Up to 96 conditions per place. [2020-01-16 21:47:00,696 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 98 places, 0 of 110 transitions, 0 of 2076 flow. [2020-01-16 21:47:00,697 INFO L478 AbstractCegarLoop]: Abstraction has has 98 places, 110 transitions [2020-01-16 21:47:00,697 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:00,886 INFO L129 PetriNetUnfolder]: 109/572 cut-off events. [2020-01-16 21:47:00,887 INFO L130 PetriNetUnfolder]: For 8407/8426 co-relation queries the response was YES. [2020-01-16 21:47:00,887 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:00,887 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:00,887 INFO L426 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:00,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:00,888 INFO L82 PathProgramCache]: Analyzing trace with hash -476888601, now seen corresponding path program 7 times [2020-01-16 21:47:00,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:00,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782582574] [2020-01-16 21:47:00,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:47:01,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782582574] [2020-01-16 21:47:01,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:01,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:01,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994674627] [2020-01-16 21:47:01,073 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:01,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:01,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:01,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:01,079 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:01,079 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 110 transitions. Second operand 7 states. [2020-01-16 21:47:01,079 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:01,079 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:01,080 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:01,599 INFO L129 PetriNetUnfolder]: 142/712 cut-off events. [2020-01-16 21:47:01,600 INFO L130 PetriNetUnfolder]: For 10544/10618 co-relation queries the response was YES. [2020-01-16 21:47:01,611 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3576 conditions, 712 events. 142/712 cut-off events. For 10544/10618 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6599 event pairs. 3/700 useless extension candidates. Maximal degree in co-relation 3251. Up to 118 conditions per place. [2020-01-16 21:47:01,612 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 38 selfloop transitions, 78 changer transitions [2020-01-16 21:47:01,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:01,614 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:01,615 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:01,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:01,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:01,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:01,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:01,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:01,617 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:01,618 INFO L174 Difference]: Start difference. First operand has 98 places, 110 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:01,619 INFO L199 Difference]: Finished difference. Result has 108 places, 113 transitions [2020-01-16 21:47:01,620 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2403, PETRI_PLACES=108, PETRI_TRANSITIONS=113} [2020-01-16 21:47:01,620 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 108 places, 113 transitions [2020-01-16 21:47:01,620 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 108 places, 113 transitions [2020-01-16 21:47:01,845 INFO L129 PetriNetUnfolder]: 109/627 cut-off events. [2020-01-16 21:47:01,845 INFO L130 PetriNetUnfolder]: For 11087/11112 co-relation queries the response was YES. [2020-01-16 21:47:01,857 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 627 events. 109/627 cut-off events. For 11087/11112 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5858 event pairs. 3/601 useless extension candidates. Maximal degree in co-relation 2948. Up to 96 conditions per place. [2020-01-16 21:47:01,860 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 108 places, 0 of 113 transitions, 62 of 2403 flow. [2020-01-16 21:47:01,861 INFO L478 AbstractCegarLoop]: Abstraction has has 107 places, 113 transitions [2020-01-16 21:47:01,861 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:02,102 INFO L129 PetriNetUnfolder]: 109/572 cut-off events. [2020-01-16 21:47:02,102 INFO L130 PetriNetUnfolder]: For 11093/11118 co-relation queries the response was YES. [2020-01-16 21:47:02,102 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:02,103 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:02,103 INFO L426 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:02,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:02,104 INFO L82 PathProgramCache]: Analyzing trace with hash -826706393, now seen corresponding path program 8 times [2020-01-16 21:47:02,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:02,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664130181] [2020-01-16 21:47:02,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:02,334 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 21:47:02,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664130181] [2020-01-16 21:47:02,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:02,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:02,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247092297] [2020-01-16 21:47:02,336 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:02,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:02,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:02,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:02,337 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:02,338 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 113 transitions. Second operand 7 states. [2020-01-16 21:47:02,338 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:02,338 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:02,338 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:02,836 INFO L129 PetriNetUnfolder]: 138/701 cut-off events. [2020-01-16 21:47:02,836 INFO L130 PetriNetUnfolder]: For 13786/13879 co-relation queries the response was YES. [2020-01-16 21:47:02,845 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3798 conditions, 701 events. 138/701 cut-off events. For 13786/13879 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6452 event pairs. 1/683 useless extension candidates. Maximal degree in co-relation 3525. Up to 106 conditions per place. [2020-01-16 21:47:02,846 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 29 selfloop transitions, 87 changer transitions [2020-01-16 21:47:02,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:02,848 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:02,848 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:02,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:02,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:02,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:02,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:02,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:02,851 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:02,851 INFO L174 Difference]: Start difference. First operand has 107 places, 113 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:02,853 INFO L199 Difference]: Finished difference. Result has 116 places, 118 transitions [2020-01-16 21:47:02,854 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2341, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2712, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2020-01-16 21:47:02,854 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 116 places, 118 transitions [2020-01-16 21:47:02,854 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 116 places, 118 transitions [2020-01-16 21:47:03,061 INFO L129 PetriNetUnfolder]: 111/638 cut-off events. [2020-01-16 21:47:03,061 INFO L130 PetriNetUnfolder]: For 14645/14680 co-relation queries the response was YES. [2020-01-16 21:47:03,071 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3441 conditions, 638 events. 111/638 cut-off events. For 14645/14680 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5999 event pairs. 3/613 useless extension candidates. Maximal degree in co-relation 3162. Up to 98 conditions per place. [2020-01-16 21:47:03,073 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 116 places, 0 of 118 transitions, 63 of 2712 flow. [2020-01-16 21:47:03,073 INFO L478 AbstractCegarLoop]: Abstraction has has 115 places, 118 transitions [2020-01-16 21:47:03,073 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:03,246 INFO L129 PetriNetUnfolder]: 111/583 cut-off events. [2020-01-16 21:47:03,246 INFO L130 PetriNetUnfolder]: For 14549/14585 co-relation queries the response was YES. [2020-01-16 21:47:03,247 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:03,247 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:03,247 INFO L426 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:03,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:03,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1824743653, now seen corresponding path program 9 times [2020-01-16 21:47:03,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:03,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543343371] [2020-01-16 21:47:03,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:03,416 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 21:47:03,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543343371] [2020-01-16 21:47:03,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:03,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:03,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629944976] [2020-01-16 21:47:03,418 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:03,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:03,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:03,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:03,419 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:03,420 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 118 transitions. Second operand 7 states. [2020-01-16 21:47:03,420 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:03,420 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:03,420 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:04,018 INFO L129 PetriNetUnfolder]: 140/707 cut-off events. [2020-01-16 21:47:04,019 INFO L130 PetriNetUnfolder]: For 17020/17110 co-relation queries the response was YES. [2020-01-16 21:47:04,029 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3994 conditions, 707 events. 140/707 cut-off events. For 17020/17110 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6493 event pairs. 4/695 useless extension candidates. Maximal degree in co-relation 3712. Up to 119 conditions per place. [2020-01-16 21:47:04,030 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 36 selfloop transitions, 86 changer transitions [2020-01-16 21:47:04,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:04,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:04,032 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:04,033 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:04,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:04,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:04,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:04,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:04,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:04,035 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:04,036 INFO L174 Difference]: Start difference. First operand has 115 places, 118 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:04,038 INFO L199 Difference]: Finished difference. Result has 124 places, 120 transitions [2020-01-16 21:47:04,039 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2649, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2956, PETRI_PLACES=124, PETRI_TRANSITIONS=120} [2020-01-16 21:47:04,039 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 124 places, 120 transitions [2020-01-16 21:47:04,039 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 124 places, 120 transitions [2020-01-16 21:47:04,252 INFO L129 PetriNetUnfolder]: 111/637 cut-off events. [2020-01-16 21:47:04,253 INFO L130 PetriNetUnfolder]: For 17628/17664 co-relation queries the response was YES. [2020-01-16 21:47:04,262 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 637 events. 111/637 cut-off events. For 17628/17664 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5965 event pairs. 0/608 useless extension candidates. Maximal degree in co-relation 3389. Up to 98 conditions per place. [2020-01-16 21:47:04,263 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 124 places, 0 of 120 transitions, 63 of 2956 flow. [2020-01-16 21:47:04,264 INFO L478 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions [2020-01-16 21:47:04,264 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:04,653 INFO L129 PetriNetUnfolder]: 111/583 cut-off events. [2020-01-16 21:47:04,653 INFO L130 PetriNetUnfolder]: For 17692/17731 co-relation queries the response was YES. [2020-01-16 21:47:04,653 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:04,654 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:04,654 INFO L426 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:04,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:04,655 INFO L82 PathProgramCache]: Analyzing trace with hash -255251587, now seen corresponding path program 10 times [2020-01-16 21:47:04,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:04,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36785195] [2020-01-16 21:47:04,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:04,929 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 21:47:04,929 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36785195] [2020-01-16 21:47:04,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:04,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:04,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057599342] [2020-01-16 21:47:04,931 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:04,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:04,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:04,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:04,934 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:04,934 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions. Second operand 7 states. [2020-01-16 21:47:04,935 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:04,935 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:04,935 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:05,494 INFO L129 PetriNetUnfolder]: 138/699 cut-off events. [2020-01-16 21:47:05,494 INFO L130 PetriNetUnfolder]: For 20361/20453 co-relation queries the response was YES. [2020-01-16 21:47:05,505 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4137 conditions, 699 events. 138/699 cut-off events. For 20361/20453 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6434 event pairs. 1/681 useless extension candidates. Maximal degree in co-relation 3932. Up to 106 conditions per place. [2020-01-16 21:47:05,506 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 32 selfloop transitions, 90 changer transitions [2020-01-16 21:47:05,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:05,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:05,508 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:05,508 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:05,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:05,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:05,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:05,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:05,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:05,511 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:05,512 INFO L174 Difference]: Start difference. First operand has 123 places, 120 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:05,513 INFO L199 Difference]: Finished difference. Result has 133 places, 126 transitions [2020-01-16 21:47:05,514 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2893, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3353, PETRI_PLACES=133, PETRI_TRANSITIONS=126} [2020-01-16 21:47:05,514 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 133 places, 126 transitions [2020-01-16 21:47:05,514 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 133 places, 126 transitions [2020-01-16 21:47:05,771 INFO L129 PetriNetUnfolder]: 111/636 cut-off events. [2020-01-16 21:47:05,772 INFO L130 PetriNetUnfolder]: For 21444/21485 co-relation queries the response was YES. [2020-01-16 21:47:05,783 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3799 conditions, 636 events. 111/636 cut-off events. For 21444/21485 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5942 event pairs. 2/609 useless extension candidates. Maximal degree in co-relation 3588. Up to 98 conditions per place. [2020-01-16 21:47:05,785 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 133 places, 0 of 126 transitions, 63 of 3353 flow. [2020-01-16 21:47:05,786 INFO L478 AbstractCegarLoop]: Abstraction has has 132 places, 126 transitions [2020-01-16 21:47:05,786 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:06,017 INFO L129 PetriNetUnfolder]: 111/583 cut-off events. [2020-01-16 21:47:06,018 INFO L130 PetriNetUnfolder]: For 21444/21485 co-relation queries the response was YES. [2020-01-16 21:47:06,018 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:06,018 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:06,018 INFO L426 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:06,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:06,019 INFO L82 PathProgramCache]: Analyzing trace with hash -616429887, now seen corresponding path program 11 times [2020-01-16 21:47:06,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:06,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257325715] [2020-01-16 21:47:06,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:06,168 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 21:47:06,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257325715] [2020-01-16 21:47:06,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:06,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:06,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021305407] [2020-01-16 21:47:06,170 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:06,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:06,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:06,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:06,171 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:06,171 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 126 transitions. Second operand 7 states. [2020-01-16 21:47:06,172 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:06,172 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:06,172 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:06,765 INFO L129 PetriNetUnfolder]: 142/727 cut-off events. [2020-01-16 21:47:06,765 INFO L130 PetriNetUnfolder]: For 25624/25716 co-relation queries the response was YES. [2020-01-16 21:47:06,777 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4523 conditions, 727 events. 142/727 cut-off events. For 25624/25716 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6781 event pairs. 1/709 useless extension candidates. Maximal degree in co-relation 4304. Up to 112 conditions per place. [2020-01-16 21:47:06,778 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 34 selfloop transitions, 94 changer transitions [2020-01-16 21:47:06,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:06,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:06,780 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:06,780 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:06,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:06,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:06,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:06,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:06,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:06,784 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:06,784 INFO L174 Difference]: Start difference. First operand has 132 places, 126 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:06,789 INFO L199 Difference]: Finished difference. Result has 142 places, 133 transitions [2020-01-16 21:47:06,790 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3290, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3805, PETRI_PLACES=142, PETRI_TRANSITIONS=133} [2020-01-16 21:47:06,791 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 142 places, 133 transitions [2020-01-16 21:47:06,791 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 142 places, 133 transitions [2020-01-16 21:47:07,137 INFO L129 PetriNetUnfolder]: 117/670 cut-off events. [2020-01-16 21:47:07,137 INFO L130 PetriNetUnfolder]: For 26995/27034 co-relation queries the response was YES. [2020-01-16 21:47:07,146 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4205 conditions, 670 events. 117/670 cut-off events. For 26995/27034 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6338 event pairs. 2/645 useless extension candidates. Maximal degree in co-relation 3984. Up to 104 conditions per place. [2020-01-16 21:47:07,148 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 142 places, 0 of 133 transitions, 66 of 3805 flow. [2020-01-16 21:47:07,148 INFO L478 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions [2020-01-16 21:47:07,149 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:07,308 INFO L129 PetriNetUnfolder]: 117/615 cut-off events. [2020-01-16 21:47:07,308 INFO L130 PetriNetUnfolder]: For 26995/27034 co-relation queries the response was YES. [2020-01-16 21:47:07,308 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:07,308 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:07,308 INFO L426 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:07,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:07,309 INFO L82 PathProgramCache]: Analyzing trace with hash -487391705, now seen corresponding path program 12 times [2020-01-16 21:47:07,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:07,309 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828332081] [2020-01-16 21:47:07,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:07,484 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 21:47:07,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828332081] [2020-01-16 21:47:07,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:07,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:07,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855875027] [2020-01-16 21:47:07,485 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:07,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:07,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:07,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:07,486 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:07,486 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions. Second operand 7 states. [2020-01-16 21:47:07,486 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:07,486 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:07,487 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:07,971 INFO L129 PetriNetUnfolder]: 144/743 cut-off events. [2020-01-16 21:47:07,971 INFO L130 PetriNetUnfolder]: For 31007/31099 co-relation queries the response was YES. [2020-01-16 21:47:07,981 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4830 conditions, 743 events. 144/743 cut-off events. For 31007/31099 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6994 event pairs. 1/725 useless extension candidates. Maximal degree in co-relation 4601. Up to 116 conditions per place. [2020-01-16 21:47:07,982 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 39 selfloop transitions, 95 changer transitions [2020-01-16 21:47:07,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:07,985 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:07,985 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:07,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:07,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:07,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:07,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:07,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:07,988 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:07,988 INFO L174 Difference]: Start difference. First operand has 141 places, 133 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:07,991 INFO L199 Difference]: Finished difference. Result has 151 places, 139 transitions [2020-01-16 21:47:07,991 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3739, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4242, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2020-01-16 21:47:07,992 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 151 places, 139 transitions [2020-01-16 21:47:07,992 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 151 places, 139 transitions [2020-01-16 21:47:08,359 INFO L129 PetriNetUnfolder]: 121/690 cut-off events. [2020-01-16 21:47:08,360 INFO L130 PetriNetUnfolder]: For 32843/32886 co-relation queries the response was YES. [2020-01-16 21:47:08,367 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4551 conditions, 690 events. 121/690 cut-off events. For 32843/32886 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6637 event pairs. 2/666 useless extension candidates. Maximal degree in co-relation 4320. Up to 108 conditions per place. [2020-01-16 21:47:08,369 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 151 places, 0 of 139 transitions, 68 of 4242 flow. [2020-01-16 21:47:08,369 INFO L478 AbstractCegarLoop]: Abstraction has has 150 places, 139 transitions [2020-01-16 21:47:08,369 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:08,523 INFO L129 PetriNetUnfolder]: 121/633 cut-off events. [2020-01-16 21:47:08,523 INFO L130 PetriNetUnfolder]: For 32883/32930 co-relation queries the response was YES. [2020-01-16 21:47:08,523 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:08,524 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:08,524 INFO L426 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:08,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1878785565, now seen corresponding path program 13 times [2020-01-16 21:47:08,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:08,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249814412] [2020-01-16 21:47:08,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:08,724 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 21:47:08,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249814412] [2020-01-16 21:47:08,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:08,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:08,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056356064] [2020-01-16 21:47:08,726 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:08,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:08,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:08,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:08,727 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:08,727 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 139 transitions. Second operand 7 states. [2020-01-16 21:47:08,728 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:08,728 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:08,728 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:09,207 INFO L129 PetriNetUnfolder]: 143/737 cut-off events. [2020-01-16 21:47:09,207 INFO L130 PetriNetUnfolder]: For 36346/36438 co-relation queries the response was YES. [2020-01-16 21:47:09,216 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5045 conditions, 737 events. 143/737 cut-off events. For 36346/36438 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6884 event pairs. 2/722 useless extension candidates. Maximal degree in co-relation 4806. Up to 155 conditions per place. [2020-01-16 21:47:09,217 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 67 selfloop transitions, 96 changer transitions [2020-01-16 21:47:09,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:09,424 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:09,424 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:09,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:09,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:09,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:09,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:09,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:09,427 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:09,427 INFO L174 Difference]: Start difference. First operand has 150 places, 139 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:09,430 INFO L199 Difference]: Finished difference. Result has 161 places, 150 transitions [2020-01-16 21:47:09,430 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4852, PETRI_PLACES=161, PETRI_TRANSITIONS=150} [2020-01-16 21:47:09,430 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 161 places, 150 transitions [2020-01-16 21:47:09,430 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 161 places, 150 transitions [2020-01-16 21:47:09,657 INFO L129 PetriNetUnfolder]: 121/689 cut-off events. [2020-01-16 21:47:09,658 INFO L130 PetriNetUnfolder]: For 39246/39331 co-relation queries the response was YES. [2020-01-16 21:47:09,665 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4803 conditions, 689 events. 121/689 cut-off events. For 39246/39331 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6606 event pairs. 2/668 useless extension candidates. Maximal degree in co-relation 4552. Up to 108 conditions per place. [2020-01-16 21:47:09,667 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 161 places, 0 of 150 transitions, 68 of 4852 flow. [2020-01-16 21:47:09,667 INFO L478 AbstractCegarLoop]: Abstraction has has 160 places, 150 transitions [2020-01-16 21:47:09,667 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:09,838 INFO L129 PetriNetUnfolder]: 121/634 cut-off events. [2020-01-16 21:47:09,838 INFO L130 PetriNetUnfolder]: For 39246/39331 co-relation queries the response was YES. [2020-01-16 21:47:09,838 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:09,838 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:09,838 INFO L426 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:09,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:09,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1071515999, now seen corresponding path program 14 times [2020-01-16 21:47:09,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:09,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459938149] [2020-01-16 21:47:09,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:47:09,990 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459938149] [2020-01-16 21:47:09,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:09,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:09,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529487422] [2020-01-16 21:47:09,991 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:09,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:09,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:09,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:09,992 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:09,992 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 150 transitions. Second operand 7 states. [2020-01-16 21:47:09,992 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:09,992 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:09,992 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:10,499 INFO L129 PetriNetUnfolder]: 146/750 cut-off events. [2020-01-16 21:47:10,499 INFO L130 PetriNetUnfolder]: For 42910/43092 co-relation queries the response was YES. [2020-01-16 21:47:10,510 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5336 conditions, 750 events. 146/750 cut-off events. For 42910/43092 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7072 event pairs. 2/733 useless extension candidates. Maximal degree in co-relation 5077. Up to 120 conditions per place. [2020-01-16 21:47:10,511 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 58 selfloop transitions, 98 changer transitions [2020-01-16 21:47:10,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:10,515 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:10,515 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:10,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:10,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:10,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:10,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:10,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:10,519 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:10,519 INFO L174 Difference]: Start difference. First operand has 160 places, 150 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:10,522 INFO L199 Difference]: Finished difference. Result has 170 places, 161 transitions [2020-01-16 21:47:10,522 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4784, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5451, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2020-01-16 21:47:10,523 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 170 places, 161 transitions [2020-01-16 21:47:10,523 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 170 places, 161 transitions [2020-01-16 21:47:10,798 INFO L129 PetriNetUnfolder]: 121/688 cut-off events. [2020-01-16 21:47:10,799 INFO L130 PetriNetUnfolder]: For 45033/45122 co-relation queries the response was YES. [2020-01-16 21:47:10,807 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 688 events. 121/688 cut-off events. For 45033/45122 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6610 event pairs. 2/667 useless extension candidates. Maximal degree in co-relation 4758. Up to 108 conditions per place. [2020-01-16 21:47:10,809 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 170 places, 0 of 161 transitions, 68 of 5451 flow. [2020-01-16 21:47:10,809 INFO L478 AbstractCegarLoop]: Abstraction has has 169 places, 161 transitions [2020-01-16 21:47:10,809 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:10,995 INFO L129 PetriNetUnfolder]: 121/634 cut-off events. [2020-01-16 21:47:10,995 INFO L130 PetriNetUnfolder]: For 44948/45031 co-relation queries the response was YES. [2020-01-16 21:47:10,995 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:10,996 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:10,996 INFO L426 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:10,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:10,996 INFO L82 PathProgramCache]: Analyzing trace with hash -387090589, now seen corresponding path program 15 times [2020-01-16 21:47:10,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:10,996 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107832963] [2020-01-16 21:47:10,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:11,146 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 21:47:11,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107832963] [2020-01-16 21:47:11,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:11,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:11,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183531421] [2020-01-16 21:47:11,148 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:11,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:11,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:11,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:11,149 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:11,149 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 161 transitions. Second operand 7 states. [2020-01-16 21:47:11,149 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:11,149 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:11,149 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:12,001 INFO L129 PetriNetUnfolder]: 157/816 cut-off events. [2020-01-16 21:47:12,001 INFO L130 PetriNetUnfolder]: For 54221/54465 co-relation queries the response was YES. [2020-01-16 21:47:12,013 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6079 conditions, 816 events. 157/816 cut-off events. For 54221/54465 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7863 event pairs. 9/805 useless extension candidates. Maximal degree in co-relation 5810. Up to 145 conditions per place. [2020-01-16 21:47:12,037 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 71 selfloop transitions, 113 changer transitions [2020-01-16 21:47:12,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:12,039 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:12,039 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:12,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:12,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:12,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:12,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:12,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:12,041 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:12,042 INFO L174 Difference]: Start difference. First operand has 169 places, 161 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:12,044 INFO L199 Difference]: Finished difference. Result has 180 places, 177 transitions [2020-01-16 21:47:12,045 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5383, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6376, PETRI_PLACES=180, PETRI_TRANSITIONS=177} [2020-01-16 21:47:12,045 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 180 places, 177 transitions [2020-01-16 21:47:12,045 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 180 places, 177 transitions [2020-01-16 21:47:12,383 INFO L129 PetriNetUnfolder]: 133/754 cut-off events. [2020-01-16 21:47:12,383 INFO L130 PetriNetUnfolder]: For 59059/59274 co-relation queries the response was YES. [2020-01-16 21:47:12,393 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5785 conditions, 754 events. 133/754 cut-off events. For 59059/59274 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7453 event pairs. 4/727 useless extension candidates. Maximal degree in co-relation 5512. Up to 118 conditions per place. [2020-01-16 21:47:12,396 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 180 places, 0 of 177 transitions, 75 of 6376 flow. [2020-01-16 21:47:12,396 INFO L478 AbstractCegarLoop]: Abstraction has has 179 places, 177 transitions [2020-01-16 21:47:12,396 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:12,630 INFO L129 PetriNetUnfolder]: 133/694 cut-off events. [2020-01-16 21:47:12,630 INFO L130 PetriNetUnfolder]: For 59059/59274 co-relation queries the response was YES. [2020-01-16 21:47:12,630 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:12,631 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:12,631 INFO L426 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:12,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:12,631 INFO L82 PathProgramCache]: Analyzing trace with hash 515566599, now seen corresponding path program 16 times [2020-01-16 21:47:12,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:12,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11095514] [2020-01-16 21:47:12,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:12,807 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 21:47:12,808 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11095514] [2020-01-16 21:47:12,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:12,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:12,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118476564] [2020-01-16 21:47:12,809 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:12,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:12,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:12,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:12,810 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:12,810 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 177 transitions. Second operand 7 states. [2020-01-16 21:47:12,810 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:12,810 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:12,811 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:13,688 INFO L129 PetriNetUnfolder]: 162/859 cut-off events. [2020-01-16 21:47:13,688 INFO L130 PetriNetUnfolder]: For 65164/65358 co-relation queries the response was YES. [2020-01-16 21:47:13,703 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6704 conditions, 859 events. 162/859 cut-off events. For 65164/65358 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8456 event pairs. 2/842 useless extension candidates. Maximal degree in co-relation 6423. Up to 138 conditions per place. [2020-01-16 21:47:13,705 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 56 selfloop transitions, 130 changer transitions [2020-01-16 21:47:13,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:13,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:13,707 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:13,707 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:13,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:13,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:13,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:13,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:13,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:13,708 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:13,709 INFO L174 Difference]: Start difference. First operand has 179 places, 177 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:13,713 INFO L199 Difference]: Finished difference. Result has 189 places, 193 transitions [2020-01-16 21:47:13,713 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=6301, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7378, PETRI_PLACES=189, PETRI_TRANSITIONS=193} [2020-01-16 21:47:13,713 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 189 places, 193 transitions [2020-01-16 21:47:13,714 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 189 places, 193 transitions [2020-01-16 21:47:14,236 INFO L129 PetriNetUnfolder]: 143/809 cut-off events. [2020-01-16 21:47:14,236 INFO L130 PetriNetUnfolder]: For 71251/71452 co-relation queries the response was YES. [2020-01-16 21:47:14,248 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6468 conditions, 809 events. 143/809 cut-off events. For 71251/71452 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8076 event pairs. 2/780 useless extension candidates. Maximal degree in co-relation 6181. Up to 128 conditions per place. [2020-01-16 21:47:14,251 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 189 places, 0 of 193 transitions, 80 of 7378 flow. [2020-01-16 21:47:14,251 INFO L478 AbstractCegarLoop]: Abstraction has has 188 places, 193 transitions [2020-01-16 21:47:14,251 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:14,533 INFO L129 PetriNetUnfolder]: 143/745 cut-off events. [2020-01-16 21:47:14,533 INFO L130 PetriNetUnfolder]: For 68788/68853 co-relation queries the response was YES. [2020-01-16 21:47:14,533 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:14,533 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:14,534 INFO L426 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:14,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:14,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1133673789, now seen corresponding path program 17 times [2020-01-16 21:47:14,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:14,534 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142756938] [2020-01-16 21:47:14,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:14,692 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 21:47:14,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142756938] [2020-01-16 21:47:14,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:14,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:14,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653201474] [2020-01-16 21:47:14,693 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:14,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:14,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:14,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:14,694 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:14,695 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 193 transitions. Second operand 7 states. [2020-01-16 21:47:14,695 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:14,695 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:14,695 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:15,494 INFO L129 PetriNetUnfolder]: 159/844 cut-off events. [2020-01-16 21:47:15,495 INFO L130 PetriNetUnfolder]: For 73516/73710 co-relation queries the response was YES. [2020-01-16 21:47:15,506 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6930 conditions, 844 events. 159/844 cut-off events. For 73516/73710 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8255 event pairs. 6/833 useless extension candidates. Maximal degree in co-relation 6635. Up to 159 conditions per place. [2020-01-16 21:47:15,507 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 79 selfloop transitions, 118 changer transitions [2020-01-16 21:47:15,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:15,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:15,509 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:15,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:15,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:15,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:15,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:15,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:15,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:15,511 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:15,511 INFO L174 Difference]: Start difference. First operand has 188 places, 193 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:15,514 INFO L199 Difference]: Finished difference. Result has 196 places, 195 transitions [2020-01-16 21:47:15,514 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7298, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7768, PETRI_PLACES=196, PETRI_TRANSITIONS=195} [2020-01-16 21:47:15,515 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 196 places, 195 transitions [2020-01-16 21:47:15,515 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 196 places, 195 transitions [2020-01-16 21:47:15,920 INFO L129 PetriNetUnfolder]: 143/808 cut-off events. [2020-01-16 21:47:15,920 INFO L130 PetriNetUnfolder]: For 78875/79006 co-relation queries the response was YES. [2020-01-16 21:47:15,932 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6675 conditions, 808 events. 143/808 cut-off events. For 78875/79006 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8015 event pairs. 2/782 useless extension candidates. Maximal degree in co-relation 6377. Up to 128 conditions per place. [2020-01-16 21:47:15,935 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 196 places, 0 of 195 transitions, 80 of 7768 flow. [2020-01-16 21:47:15,935 INFO L478 AbstractCegarLoop]: Abstraction has has 195 places, 195 transitions [2020-01-16 21:47:15,935 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:16,236 INFO L129 PetriNetUnfolder]: 143/745 cut-off events. [2020-01-16 21:47:16,236 INFO L130 PetriNetUnfolder]: For 79487/79679 co-relation queries the response was YES. [2020-01-16 21:47:16,236 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:16,236 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:16,237 INFO L426 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:16,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:16,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1963741189, now seen corresponding path program 18 times [2020-01-16 21:47:16,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:16,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163793651] [2020-01-16 21:47:16,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:16,443 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 21:47:16,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163793651] [2020-01-16 21:47:16,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:16,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:16,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778166525] [2020-01-16 21:47:16,444 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:16,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:16,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:16,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:16,445 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:16,445 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 195 transitions. Second operand 7 states. [2020-01-16 21:47:16,445 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:16,445 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:16,445 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:17,344 INFO L129 PetriNetUnfolder]: 157/835 cut-off events. [2020-01-16 21:47:17,344 INFO L130 PetriNetUnfolder]: For 83730/84077 co-relation queries the response was YES. [2020-01-16 21:47:17,361 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7123 conditions, 835 events. 157/835 cut-off events. For 83730/84077 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8112 event pairs. 7/823 useless extension candidates. Maximal degree in co-relation 6817. Up to 171 conditions per place. [2020-01-16 21:47:17,363 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 96 selfloop transitions, 127 changer transitions [2020-01-16 21:47:17,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:17,364 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:17,364 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:17,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:17,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:17,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:17,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:17,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:17,366 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:17,366 INFO L174 Difference]: Start difference. First operand has 195 places, 195 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:17,369 INFO L199 Difference]: Finished difference. Result has 206 places, 215 transitions [2020-01-16 21:47:17,369 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7688, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8927, PETRI_PLACES=206, PETRI_TRANSITIONS=215} [2020-01-16 21:47:17,369 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 206 places, 215 transitions [2020-01-16 21:47:17,369 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 206 places, 215 transitions [2020-01-16 21:47:17,839 INFO L129 PetriNetUnfolder]: 143/807 cut-off events. [2020-01-16 21:47:17,839 INFO L130 PetriNetUnfolder]: For 90921/91207 co-relation queries the response was YES. [2020-01-16 21:47:17,852 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6943 conditions, 807 events. 143/807 cut-off events. For 90921/91207 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7994 event pairs. 2/791 useless extension candidates. Maximal degree in co-relation 6626. Up to 128 conditions per place. [2020-01-16 21:47:17,855 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 206 places, 0 of 215 transitions, 80 of 8927 flow. [2020-01-16 21:47:17,856 INFO L478 AbstractCegarLoop]: Abstraction has has 205 places, 215 transitions [2020-01-16 21:47:17,856 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:18,201 INFO L129 PetriNetUnfolder]: 143/745 cut-off events. [2020-01-16 21:47:18,202 INFO L130 PetriNetUnfolder]: For 90921/91207 co-relation queries the response was YES. [2020-01-16 21:47:18,202 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:18,202 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:18,202 INFO L426 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:18,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:18,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1134773615, now seen corresponding path program 19 times [2020-01-16 21:47:18,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:18,202 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402064491] [2020-01-16 21:47:18,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:18,387 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 21:47:18,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402064491] [2020-01-16 21:47:18,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:18,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:18,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441974520] [2020-01-16 21:47:18,389 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:18,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:18,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:18,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:18,390 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:18,390 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 215 transitions. Second operand 7 states. [2020-01-16 21:47:18,390 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:18,390 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:18,390 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:19,251 INFO L129 PetriNetUnfolder]: 162/855 cut-off events. [2020-01-16 21:47:19,251 INFO L130 PetriNetUnfolder]: For 92604/92905 co-relation queries the response was YES. [2020-01-16 21:47:19,265 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7443 conditions, 855 events. 162/855 cut-off events. For 92604/92905 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8388 event pairs. 8/847 useless extension candidates. Maximal degree in co-relation 7118. Up to 150 conditions per place. [2020-01-16 21:47:19,267 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 81 selfloop transitions, 142 changer transitions [2020-01-16 21:47:19,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:19,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:19,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:19,268 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:19,268 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:19,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:19,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:19,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:19,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:19,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:19,270 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:19,270 INFO L174 Difference]: Start difference. First operand has 205 places, 215 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:19,272 INFO L199 Difference]: Finished difference. Result has 213 places, 218 transitions [2020-01-16 21:47:19,273 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=8847, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9349, PETRI_PLACES=213, PETRI_TRANSITIONS=218} [2020-01-16 21:47:19,273 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 213 places, 218 transitions [2020-01-16 21:47:19,273 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 213 places, 218 transitions [2020-01-16 21:47:19,727 INFO L129 PetriNetUnfolder]: 143/806 cut-off events. [2020-01-16 21:47:19,727 INFO L130 PetriNetUnfolder]: For 99263/99549 co-relation queries the response was YES. [2020-01-16 21:47:19,740 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7127 conditions, 806 events. 143/806 cut-off events. For 99263/99549 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7972 event pairs. 2/790 useless extension candidates. Maximal degree in co-relation 6805. Up to 128 conditions per place. [2020-01-16 21:47:19,742 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 213 places, 0 of 218 transitions, 80 of 9349 flow. [2020-01-16 21:47:19,743 INFO L478 AbstractCegarLoop]: Abstraction has has 212 places, 218 transitions [2020-01-16 21:47:19,743 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:20,069 INFO L129 PetriNetUnfolder]: 143/745 cut-off events. [2020-01-16 21:47:20,069 INFO L130 PetriNetUnfolder]: For 101648/102072 co-relation queries the response was YES. [2020-01-16 21:47:20,069 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:20,069 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:20,069 INFO L426 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:20,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:20,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1917995873, now seen corresponding path program 20 times [2020-01-16 21:47:20,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:20,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751914612] [2020-01-16 21:47:20,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:20,237 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 21:47:20,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751914612] [2020-01-16 21:47:20,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:20,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:20,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035382715] [2020-01-16 21:47:20,239 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:20,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:20,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:20,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:20,240 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:20,240 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 218 transitions. Second operand 7 states. [2020-01-16 21:47:20,240 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:20,240 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:20,240 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:21,131 INFO L129 PetriNetUnfolder]: 157/833 cut-off events. [2020-01-16 21:47:21,131 INFO L130 PetriNetUnfolder]: For 101416/101692 co-relation queries the response was YES. [2020-01-16 21:47:21,146 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7594 conditions, 833 events. 157/833 cut-off events. For 101416/101692 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8099 event pairs. 2/816 useless extension candidates. Maximal degree in co-relation 7264. Up to 170 conditions per place. [2020-01-16 21:47:21,149 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 99 selfloop transitions, 127 changer transitions [2020-01-16 21:47:21,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:21,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:21,150 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:21,150 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:21,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:21,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:21,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:21,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:21,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:21,152 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:21,152 INFO L174 Difference]: Start difference. First operand has 212 places, 218 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:21,156 INFO L199 Difference]: Finished difference. Result has 221 places, 224 transitions [2020-01-16 21:47:21,156 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=9269, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9854, PETRI_PLACES=221, PETRI_TRANSITIONS=224} [2020-01-16 21:47:21,157 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 221 places, 224 transitions [2020-01-16 21:47:21,157 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 221 places, 224 transitions [2020-01-16 21:47:21,710 INFO L129 PetriNetUnfolder]: 143/805 cut-off events. [2020-01-16 21:47:21,710 INFO L130 PetriNetUnfolder]: For 108622/108972 co-relation queries the response was YES. [2020-01-16 21:47:21,727 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7290 conditions, 805 events. 143/805 cut-off events. For 108622/108972 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7940 event pairs. 2/788 useless extension candidates. Maximal degree in co-relation 6956. Up to 128 conditions per place. [2020-01-16 21:47:21,730 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 221 places, 0 of 224 transitions, 80 of 9854 flow. [2020-01-16 21:47:21,730 INFO L478 AbstractCegarLoop]: Abstraction has has 220 places, 224 transitions [2020-01-16 21:47:21,730 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:22,099 INFO L129 PetriNetUnfolder]: 143/745 cut-off events. [2020-01-16 21:47:22,099 INFO L130 PetriNetUnfolder]: For 108622/108972 co-relation queries the response was YES. [2020-01-16 21:47:22,100 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:22,100 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:22,100 INFO L426 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:22,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:22,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1249022619, now seen corresponding path program 21 times [2020-01-16 21:47:22,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:22,100 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145687397] [2020-01-16 21:47:22,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:22,322 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 21:47:22,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145687397] [2020-01-16 21:47:22,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:22,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:22,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542930853] [2020-01-16 21:47:22,324 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:22,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:22,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:22,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:22,325 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:22,325 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 224 transitions. Second operand 7 states. [2020-01-16 21:47:22,325 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:22,325 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:22,325 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:23,284 INFO L129 PetriNetUnfolder]: 163/878 cut-off events. [2020-01-16 21:47:23,284 INFO L130 PetriNetUnfolder]: For 115798/116074 co-relation queries the response was YES. [2020-01-16 21:47:23,299 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8110 conditions, 878 events. 163/878 cut-off events. For 115798/116074 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8767 event pairs. 16/878 useless extension candidates. Maximal degree in co-relation 7724. Up to 139 conditions per place. [2020-01-16 21:47:23,301 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 78 selfloop transitions, 158 changer transitions [2020-01-16 21:47:23,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:23,302 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:23,302 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:23,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:23,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:23,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:23,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:23,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:23,304 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:23,304 INFO L174 Difference]: Start difference. First operand has 220 places, 224 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:23,308 INFO L199 Difference]: Finished difference. Result has 230 places, 234 transitions [2020-01-16 21:47:23,308 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=9774, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10722, PETRI_PLACES=230, PETRI_TRANSITIONS=234} [2020-01-16 21:47:23,309 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 230 places, 234 transitions [2020-01-16 21:47:23,309 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 230 places, 234 transitions [2020-01-16 21:47:23,868 INFO L129 PetriNetUnfolder]: 150/845 cut-off events. [2020-01-16 21:47:23,868 INFO L130 PetriNetUnfolder]: For 124116/124493 co-relation queries the response was YES. [2020-01-16 21:47:23,883 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7884 conditions, 845 events. 150/845 cut-off events. For 124116/124493 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8444 event pairs. 3/828 useless extension candidates. Maximal degree in co-relation 7489. Up to 134 conditions per place. [2020-01-16 21:47:23,886 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 230 places, 0 of 234 transitions, 84 of 10722 flow. [2020-01-16 21:47:23,886 INFO L478 AbstractCegarLoop]: Abstraction has has 229 places, 234 transitions [2020-01-16 21:47:23,886 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:24,300 INFO L129 PetriNetUnfolder]: 150/782 cut-off events. [2020-01-16 21:47:24,300 INFO L130 PetriNetUnfolder]: For 120781/120945 co-relation queries the response was YES. [2020-01-16 21:47:24,300 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:24,300 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:24,300 INFO L426 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:24,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:24,301 INFO L82 PathProgramCache]: Analyzing trace with hash 887386885, now seen corresponding path program 22 times [2020-01-16 21:47:24,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:24,301 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702865474] [2020-01-16 21:47:24,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:24,471 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 21:47:24,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702865474] [2020-01-16 21:47:24,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:24,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:24,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190668392] [2020-01-16 21:47:24,473 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:24,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:24,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:24,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:24,474 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:24,474 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 234 transitions. Second operand 7 states. [2020-01-16 21:47:24,474 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:24,475 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:24,475 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:25,621 INFO L129 PetriNetUnfolder]: 171/928 cut-off events. [2020-01-16 21:47:25,622 INFO L130 PetriNetUnfolder]: For 135255/135536 co-relation queries the response was YES. [2020-01-16 21:47:25,639 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8885 conditions, 928 events. 171/928 cut-off events. For 135255/135536 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9369 event pairs. 2/912 useless extension candidates. Maximal degree in co-relation 8481. Up to 161 conditions per place. [2020-01-16 21:47:25,641 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 99 selfloop transitions, 163 changer transitions [2020-01-16 21:47:25,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:25,642 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:25,642 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:25,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:25,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:25,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:25,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:25,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:25,644 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:25,644 INFO L174 Difference]: Start difference. First operand has 229 places, 234 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:25,647 INFO L199 Difference]: Finished difference. Result has 240 places, 257 transitions [2020-01-16 21:47:25,648 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=10638, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12208, PETRI_PLACES=240, PETRI_TRANSITIONS=257} [2020-01-16 21:47:25,648 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 240 places, 257 transitions [2020-01-16 21:47:25,648 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 240 places, 257 transitions [2020-01-16 21:47:26,372 INFO L129 PetriNetUnfolder]: 161/906 cut-off events. [2020-01-16 21:47:26,373 INFO L130 PetriNetUnfolder]: For 141136/141294 co-relation queries the response was YES. [2020-01-16 21:47:26,391 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8753 conditions, 906 events. 161/906 cut-off events. For 141136/141294 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9265 event pairs. 6/894 useless extension candidates. Maximal degree in co-relation 8343. Up to 144 conditions per place. [2020-01-16 21:47:26,394 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 240 places, 0 of 257 transitions, 90 of 12208 flow. [2020-01-16 21:47:26,394 INFO L478 AbstractCegarLoop]: Abstraction has has 239 places, 257 transitions [2020-01-16 21:47:26,395 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:27,055 INFO L129 PetriNetUnfolder]: 161/838 cut-off events. [2020-01-16 21:47:27,056 INFO L130 PetriNetUnfolder]: For 140035/140132 co-relation queries the response was YES. [2020-01-16 21:47:27,056 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:27,056 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:27,056 INFO L426 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:27,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:27,056 INFO L82 PathProgramCache]: Analyzing trace with hash 613767923, now seen corresponding path program 23 times [2020-01-16 21:47:27,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:27,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115237237] [2020-01-16 21:47:27,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:27,200 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 21:47:27,200 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115237237] [2020-01-16 21:47:27,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:27,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:27,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264239266] [2020-01-16 21:47:27,201 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:27,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:27,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:27,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:27,202 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:27,203 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 257 transitions. Second operand 7 states. [2020-01-16 21:47:27,203 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:27,203 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:27,203 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:28,374 INFO L129 PetriNetUnfolder]: 173/935 cut-off events. [2020-01-16 21:47:28,374 INFO L130 PetriNetUnfolder]: For 150056/150687 co-relation queries the response was YES. [2020-01-16 21:47:28,392 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9245 conditions, 935 events. 173/935 cut-off events. For 150056/150687 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9477 event pairs. 19/935 useless extension candidates. Maximal degree in co-relation 8826. Up to 164 conditions per place. [2020-01-16 21:47:28,394 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 113 selfloop transitions, 156 changer transitions [2020-01-16 21:47:28,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:28,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:28,395 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:28,395 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:28,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:28,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:28,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:28,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:28,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:28,397 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:28,397 INFO L174 Difference]: Start difference. First operand has 239 places, 257 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:28,402 INFO L199 Difference]: Finished difference. Result has 246 places, 257 transitions [2020-01-16 21:47:28,402 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=12118, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12520, PETRI_PLACES=246, PETRI_TRANSITIONS=257} [2020-01-16 21:47:28,402 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 246 places, 257 transitions [2020-01-16 21:47:28,403 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 246 places, 257 transitions [2020-01-16 21:47:29,192 INFO L129 PetriNetUnfolder]: 161/905 cut-off events. [2020-01-16 21:47:29,192 INFO L130 PetriNetUnfolder]: For 150400/150497 co-relation queries the response was YES. [2020-01-16 21:47:29,209 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8895 conditions, 905 events. 161/905 cut-off events. For 150400/150497 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9270 event pairs. 4/892 useless extension candidates. Maximal degree in co-relation 8481. Up to 144 conditions per place. [2020-01-16 21:47:29,212 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 246 places, 0 of 257 transitions, 90 of 12520 flow. [2020-01-16 21:47:29,213 INFO L478 AbstractCegarLoop]: Abstraction has has 245 places, 257 transitions [2020-01-16 21:47:29,213 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:30,098 INFO L129 PetriNetUnfolder]: 161/838 cut-off events. [2020-01-16 21:47:30,098 INFO L130 PetriNetUnfolder]: For 151375/151545 co-relation queries the response was YES. [2020-01-16 21:47:30,098 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:30,099 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:30,099 INFO L426 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:30,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:30,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1990633439, now seen corresponding path program 24 times [2020-01-16 21:47:30,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:30,100 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132854915] [2020-01-16 21:47:30,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:30,256 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 21:47:30,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132854915] [2020-01-16 21:47:30,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:30,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:30,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890712760] [2020-01-16 21:47:30,258 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:30,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:30,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:30,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:30,259 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:30,259 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 257 transitions. Second operand 7 states. [2020-01-16 21:47:30,259 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:30,259 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:30,259 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:31,527 INFO L129 PetriNetUnfolder]: 173/936 cut-off events. [2020-01-16 21:47:31,527 INFO L130 PetriNetUnfolder]: For 160763/161363 co-relation queries the response was YES. [2020-01-16 21:47:31,546 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9397 conditions, 936 events. 173/936 cut-off events. For 160763/161363 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9505 event pairs. 17/939 useless extension candidates. Maximal degree in co-relation 8974. Up to 165 conditions per place. [2020-01-16 21:47:31,548 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 121 selfloop transitions, 165 changer transitions [2020-01-16 21:47:31,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:31,549 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:31,550 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:31,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:31,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:31,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:31,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:31,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:31,551 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:31,551 INFO L174 Difference]: Start difference. First operand has 245 places, 257 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:31,557 INFO L199 Difference]: Finished difference. Result has 256 places, 281 transitions [2020-01-16 21:47:31,557 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=12430, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14102, PETRI_PLACES=256, PETRI_TRANSITIONS=281} [2020-01-16 21:47:31,558 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 256 places, 281 transitions [2020-01-16 21:47:31,558 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 256 places, 281 transitions [2020-01-16 21:47:32,333 INFO L129 PetriNetUnfolder]: 161/904 cut-off events. [2020-01-16 21:47:32,333 INFO L130 PetriNetUnfolder]: For 165183/165406 co-relation queries the response was YES. [2020-01-16 21:47:32,351 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9199 conditions, 904 events. 161/904 cut-off events. For 165183/165406 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9198 event pairs. 6/895 useless extension candidates. Maximal degree in co-relation 8764. Up to 144 conditions per place. [2020-01-16 21:47:32,355 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 256 places, 0 of 281 transitions, 90 of 14102 flow. [2020-01-16 21:47:32,355 INFO L478 AbstractCegarLoop]: Abstraction has has 255 places, 281 transitions [2020-01-16 21:47:32,355 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:32,971 INFO L129 PetriNetUnfolder]: 161/838 cut-off events. [2020-01-16 21:47:32,971 INFO L130 PetriNetUnfolder]: For 165203/165429 co-relation queries the response was YES. [2020-01-16 21:47:32,971 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:32,971 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:32,972 INFO L426 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:32,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:32,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1478277409, now seen corresponding path program 25 times [2020-01-16 21:47:32,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:32,972 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972395913] [2020-01-16 21:47:32,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:47:33,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972395913] [2020-01-16 21:47:33,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:33,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:33,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696768145] [2020-01-16 21:47:33,168 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:33,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:33,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:33,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:33,168 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:33,169 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 281 transitions. Second operand 7 states. [2020-01-16 21:47:33,169 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:33,169 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:33,169 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:34,821 INFO L129 PetriNetUnfolder]: 188/1037 cut-off events. [2020-01-16 21:47:34,821 INFO L130 PetriNetUnfolder]: For 196361/197355 co-relation queries the response was YES. [2020-01-16 21:47:34,843 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10824 conditions, 1037 events. 188/1037 cut-off events. For 196361/197355 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10849 event pairs. 32/1051 useless extension candidates. Maximal degree in co-relation 10380. Up to 173 conditions per place. [2020-01-16 21:47:34,845 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 138 selfloop transitions, 175 changer transitions [2020-01-16 21:47:34,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:34,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:34,846 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:34,847 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:34,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:34,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:34,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:34,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:34,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:34,848 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:34,848 INFO L174 Difference]: Start difference. First operand has 255 places, 281 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:34,852 INFO L199 Difference]: Finished difference. Result has 266 places, 308 transitions [2020-01-16 21:47:34,853 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=14012, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16229, PETRI_PLACES=266, PETRI_TRANSITIONS=308} [2020-01-16 21:47:34,853 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 266 places, 308 transitions [2020-01-16 21:47:34,853 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 266 places, 308 transitions [2020-01-16 21:47:35,919 INFO L129 PetriNetUnfolder]: 182/1024 cut-off events. [2020-01-16 21:47:35,919 INFO L130 PetriNetUnfolder]: For 201189/201365 co-relation queries the response was YES. [2020-01-16 21:47:35,942 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10729 conditions, 1024 events. 182/1024 cut-off events. For 201189/201365 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10753 event pairs. 7/1012 useless extension candidates. Maximal degree in co-relation 10275. Up to 164 conditions per place. [2020-01-16 21:47:35,946 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 266 places, 0 of 308 transitions, 101 of 16229 flow. [2020-01-16 21:47:35,947 INFO L478 AbstractCegarLoop]: Abstraction has has 265 places, 308 transitions [2020-01-16 21:47:35,947 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:36,713 INFO L129 PetriNetUnfolder]: 182/947 cut-off events. [2020-01-16 21:47:36,713 INFO L130 PetriNetUnfolder]: For 202690/203039 co-relation queries the response was YES. [2020-01-16 21:47:36,713 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:36,713 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:36,713 INFO L426 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:36,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:36,714 INFO L82 PathProgramCache]: Analyzing trace with hash 389964929, now seen corresponding path program 26 times [2020-01-16 21:47:36,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:36,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98703173] [2020-01-16 21:47:36,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:36,864 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 21:47:36,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98703173] [2020-01-16 21:47:36,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:36,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:36,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326739849] [2020-01-16 21:47:36,865 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:36,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:36,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:36,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:36,866 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:36,866 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 308 transitions. Second operand 7 states. [2020-01-16 21:47:36,867 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:36,867 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:36,867 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:38,574 INFO L129 PetriNetUnfolder]: 190/1046 cut-off events. [2020-01-16 21:47:38,574 INFO L130 PetriNetUnfolder]: For 212035/213029 co-relation queries the response was YES. [2020-01-16 21:47:38,597 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11201 conditions, 1046 events. 190/1046 cut-off events. For 212035/213029 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10941 event pairs. 33/1065 useless extension candidates. Maximal degree in co-relation 10738. Up to 178 conditions per place. [2020-01-16 21:47:38,600 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 129 selfloop transitions, 186 changer transitions [2020-01-16 21:47:38,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:38,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:38,601 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:38,601 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:38,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:38,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:38,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:38,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:38,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:38,602 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:38,602 INFO L174 Difference]: Start difference. First operand has 265 places, 308 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:38,607 INFO L199 Difference]: Finished difference. Result has 274 places, 312 transitions [2020-01-16 21:47:38,607 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=16128, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16810, PETRI_PLACES=274, PETRI_TRANSITIONS=312} [2020-01-16 21:47:38,607 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 274 places, 312 transitions [2020-01-16 21:47:38,607 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 274 places, 312 transitions [2020-01-16 21:47:39,743 INFO L129 PetriNetUnfolder]: 182/1023 cut-off events. [2020-01-16 21:47:39,743 INFO L130 PetriNetUnfolder]: For 216843/217197 co-relation queries the response was YES. [2020-01-16 21:47:39,765 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10928 conditions, 1023 events. 182/1023 cut-off events. For 216843/217197 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10732 event pairs. 16/1018 useless extension candidates. Maximal degree in co-relation 10464. Up to 164 conditions per place. [2020-01-16 21:47:39,770 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 274 places, 0 of 312 transitions, 101 of 16810 flow. [2020-01-16 21:47:39,770 INFO L478 AbstractCegarLoop]: Abstraction has has 273 places, 312 transitions [2020-01-16 21:47:39,770 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:41,021 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:47:41,021 INFO L130 PetriNetUnfolder]: For 216843/217197 co-relation queries the response was YES. [2020-01-16 21:47:41,021 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:41,021 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:41,021 INFO L426 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:41,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:41,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1255159617, now seen corresponding path program 27 times [2020-01-16 21:47:41,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:41,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257078733] [2020-01-16 21:47:41,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:41,207 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 21:47:41,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257078733] [2020-01-16 21:47:41,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:41,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:41,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944469404] [2020-01-16 21:47:41,208 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:41,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:41,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:41,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:41,209 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:41,209 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 312 transitions. Second operand 7 states. [2020-01-16 21:47:41,209 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:41,210 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:41,210 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:42,968 INFO L129 PetriNetUnfolder]: 189/1038 cut-off events. [2020-01-16 21:47:42,968 INFO L130 PetriNetUnfolder]: For 226480/227402 co-relation queries the response was YES. [2020-01-16 21:47:43,003 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11386 conditions, 1038 events. 189/1038 cut-off events. For 226480/227402 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10804 event pairs. 32/1055 useless extension candidates. Maximal degree in co-relation 10913. Up to 169 conditions per place. [2020-01-16 21:47:43,007 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 142 selfloop transitions, 190 changer transitions [2020-01-16 21:47:43,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:43,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:43,008 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:43,008 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:43,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:43,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:43,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:43,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:43,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:43,010 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:43,010 INFO L174 Difference]: Start difference. First operand has 273 places, 312 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:43,017 INFO L199 Difference]: Finished difference. Result has 283 places, 328 transitions [2020-01-16 21:47:43,017 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=16709, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18093, PETRI_PLACES=283, PETRI_TRANSITIONS=328} [2020-01-16 21:47:43,018 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 283 places, 328 transitions [2020-01-16 21:47:43,018 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 283 places, 328 transitions [2020-01-16 21:47:44,218 INFO L129 PetriNetUnfolder]: 182/1022 cut-off events. [2020-01-16 21:47:44,218 INFO L130 PetriNetUnfolder]: For 233112/233474 co-relation queries the response was YES. [2020-01-16 21:47:44,242 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11285 conditions, 1022 events. 182/1022 cut-off events. For 233112/233474 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10746 event pairs. 17/1020 useless extension candidates. Maximal degree in co-relation 10805. Up to 164 conditions per place. [2020-01-16 21:47:44,247 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 283 places, 0 of 328 transitions, 101 of 18093 flow. [2020-01-16 21:47:44,247 INFO L478 AbstractCegarLoop]: Abstraction has has 282 places, 328 transitions [2020-01-16 21:47:44,247 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:44,951 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:47:44,951 INFO L130 PetriNetUnfolder]: For 232547/232854 co-relation queries the response was YES. [2020-01-16 21:47:44,951 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:44,951 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:44,951 INFO L426 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:44,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:44,951 INFO L82 PathProgramCache]: Analyzing trace with hash 755726137, now seen corresponding path program 28 times [2020-01-16 21:47:44,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:44,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428600883] [2020-01-16 21:47:44,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:45,145 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 21:47:45,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428600883] [2020-01-16 21:47:45,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:45,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:45,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285012165] [2020-01-16 21:47:45,146 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:45,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:45,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:45,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:45,147 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:45,147 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 328 transitions. Second operand 7 states. [2020-01-16 21:47:45,147 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:45,147 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:45,147 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:46,979 INFO L129 PetriNetUnfolder]: 188/1035 cut-off events. [2020-01-16 21:47:46,979 INFO L130 PetriNetUnfolder]: For 244502/245907 co-relation queries the response was YES. [2020-01-16 21:47:47,003 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11746 conditions, 1035 events. 188/1035 cut-off events. For 244502/245907 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10772 event pairs. 40/1058 useless extension candidates. Maximal degree in co-relation 11257. Up to 178 conditions per place. [2020-01-16 21:47:47,006 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 131 selfloop transitions, 192 changer transitions [2020-01-16 21:47:47,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:47,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:47,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:47,007 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:47,007 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:47,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:47,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:47,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:47,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:47,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:47,008 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:47,008 INFO L174 Difference]: Start difference. First operand has 282 places, 328 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:47,013 INFO L199 Difference]: Finished difference. Result has 290 places, 329 transitions [2020-01-16 21:47:47,013 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=17992, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18536, PETRI_PLACES=290, PETRI_TRANSITIONS=329} [2020-01-16 21:47:47,013 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 290 places, 329 transitions [2020-01-16 21:47:47,014 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 290 places, 329 transitions [2020-01-16 21:47:48,240 INFO L129 PetriNetUnfolder]: 182/1021 cut-off events. [2020-01-16 21:47:48,240 INFO L130 PetriNetUnfolder]: For 246367/246623 co-relation queries the response was YES. [2020-01-16 21:47:48,264 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11451 conditions, 1021 events. 182/1021 cut-off events. For 246367/246623 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10685 event pairs. 17/1018 useless extension candidates. Maximal degree in co-relation 10961. Up to 164 conditions per place. [2020-01-16 21:47:48,269 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 290 places, 0 of 329 transitions, 101 of 18536 flow. [2020-01-16 21:47:48,269 INFO L478 AbstractCegarLoop]: Abstraction has has 289 places, 329 transitions [2020-01-16 21:47:48,269 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:49,279 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:47:49,279 INFO L130 PetriNetUnfolder]: For 246367/246623 co-relation queries the response was YES. [2020-01-16 21:47:49,279 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:49,280 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:49,280 INFO L426 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:49,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:49,280 INFO L82 PathProgramCache]: Analyzing trace with hash 198594609, now seen corresponding path program 29 times [2020-01-16 21:47:49,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:49,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866532262] [2020-01-16 21:47:49,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:49,448 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 21:47:49,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866532262] [2020-01-16 21:47:49,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:49,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:49,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165195919] [2020-01-16 21:47:49,449 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:49,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:49,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:49,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:49,450 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:49,450 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 329 transitions. Second operand 7 states. [2020-01-16 21:47:49,450 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:49,451 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:49,451 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:51,315 INFO L129 PetriNetUnfolder]: 188/1034 cut-off events. [2020-01-16 21:47:51,315 INFO L130 PetriNetUnfolder]: For 256720/257396 co-relation queries the response was YES. [2020-01-16 21:47:51,340 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11914 conditions, 1034 events. 188/1034 cut-off events. For 256720/257396 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10749 event pairs. 5/1022 useless extension candidates. Maximal degree in co-relation 11415. Up to 171 conditions per place. [2020-01-16 21:47:51,343 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 136 selfloop transitions, 193 changer transitions [2020-01-16 21:47:51,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:51,344 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:51,344 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:51,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:51,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:51,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:51,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:51,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:51,346 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:51,346 INFO L174 Difference]: Start difference. First operand has 289 places, 329 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:51,351 INFO L199 Difference]: Finished difference. Result has 298 places, 333 transitions [2020-01-16 21:47:51,351 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=18435, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19235, PETRI_PLACES=298, PETRI_TRANSITIONS=333} [2020-01-16 21:47:51,351 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 298 places, 333 transitions [2020-01-16 21:47:51,351 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 298 places, 333 transitions [2020-01-16 21:47:52,644 INFO L129 PetriNetUnfolder]: 182/1020 cut-off events. [2020-01-16 21:47:52,645 INFO L130 PetriNetUnfolder]: For 262444/262702 co-relation queries the response was YES. [2020-01-16 21:47:52,670 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11669 conditions, 1020 events. 182/1020 cut-off events. For 262444/262702 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10695 event pairs. 18/1018 useless extension candidates. Maximal degree in co-relation 11169. Up to 164 conditions per place. [2020-01-16 21:47:52,675 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 298 places, 0 of 333 transitions, 101 of 19235 flow. [2020-01-16 21:47:52,675 INFO L478 AbstractCegarLoop]: Abstraction has has 297 places, 333 transitions [2020-01-16 21:47:52,675 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:53,582 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:47:53,582 INFO L130 PetriNetUnfolder]: For 262167/262422 co-relation queries the response was YES. [2020-01-16 21:47:53,582 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:53,582 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:53,583 INFO L426 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:53,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:53,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1031803955, now seen corresponding path program 30 times [2020-01-16 21:47:53,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:53,583 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334889495] [2020-01-16 21:47:53,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:53,804 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 21:47:53,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334889495] [2020-01-16 21:47:53,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:53,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:53,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577991795] [2020-01-16 21:47:53,806 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:53,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:53,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:53,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:53,807 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:53,807 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 333 transitions. Second operand 7 states. [2020-01-16 21:47:53,807 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:53,807 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:53,808 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:47:55,747 INFO L129 PetriNetUnfolder]: 189/1035 cut-off events. [2020-01-16 21:47:55,748 INFO L130 PetriNetUnfolder]: For 272911/273544 co-relation queries the response was YES. [2020-01-16 21:47:55,773 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12139 conditions, 1035 events. 189/1035 cut-off events. For 272911/273544 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10780 event pairs. 21/1039 useless extension candidates. Maximal degree in co-relation 11630. Up to 176 conditions per place. [2020-01-16 21:47:55,776 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 147 selfloop transitions, 191 changer transitions [2020-01-16 21:47:55,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:47:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:47:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:47:55,777 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:47:55,777 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:47:55,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:47:55,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:47:55,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:47:55,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:47:55,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:47:55,779 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:47:55,779 INFO L174 Difference]: Start difference. First operand has 297 places, 333 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:47:55,787 INFO L199 Difference]: Finished difference. Result has 304 places, 333 transitions [2020-01-16 21:47:55,787 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=19134, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19617, PETRI_PLACES=304, PETRI_TRANSITIONS=333} [2020-01-16 21:47:55,787 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 304 places, 333 transitions [2020-01-16 21:47:55,787 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 304 places, 333 transitions [2020-01-16 21:47:57,078 INFO L129 PetriNetUnfolder]: 182/1019 cut-off events. [2020-01-16 21:47:57,078 INFO L130 PetriNetUnfolder]: For 276469/276704 co-relation queries the response was YES. [2020-01-16 21:47:57,103 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11823 conditions, 1019 events. 182/1019 cut-off events. For 276469/276704 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10714 event pairs. 18/1017 useless extension candidates. Maximal degree in co-relation 11314. Up to 164 conditions per place. [2020-01-16 21:47:57,108 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 304 places, 0 of 333 transitions, 101 of 19617 flow. [2020-01-16 21:47:57,108 INFO L478 AbstractCegarLoop]: Abstraction has has 303 places, 333 transitions [2020-01-16 21:47:57,108 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:47:58,049 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:47:58,050 INFO L130 PetriNetUnfolder]: For 276469/276704 co-relation queries the response was YES. [2020-01-16 21:47:58,050 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:47:58,050 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:47:58,050 INFO L426 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:47:58,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:47:58,050 INFO L82 PathProgramCache]: Analyzing trace with hash 28940465, now seen corresponding path program 31 times [2020-01-16 21:47:58,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:47:58,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686598639] [2020-01-16 21:47:58,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:47:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:47:58,232 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 21:47:58,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686598639] [2020-01-16 21:47:58,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:47:58,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:47:58,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782909640] [2020-01-16 21:47:58,234 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:47:58,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:47:58,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:47:58,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:47:58,235 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:47:58,236 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 333 transitions. Second operand 7 states. [2020-01-16 21:47:58,236 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:47:58,236 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:47:58,236 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:48:00,332 INFO L129 PetriNetUnfolder]: 189/1036 cut-off events. [2020-01-16 21:48:00,333 INFO L130 PetriNetUnfolder]: For 287337/287976 co-relation queries the response was YES. [2020-01-16 21:48:00,361 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12297 conditions, 1036 events. 189/1036 cut-off events. For 287337/287976 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10801 event pairs. 5/1024 useless extension candidates. Maximal degree in co-relation 11779. Up to 166 conditions per place. [2020-01-16 21:48:00,364 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 118 selfloop transitions, 207 changer transitions [2020-01-16 21:48:00,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:48:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:48:00,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:48:00,365 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:48:00,365 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:48:00,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:48:00,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:48:00,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:48:00,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:48:00,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:48:00,367 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:48:00,367 INFO L174 Difference]: Start difference. First operand has 303 places, 333 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:48:00,374 INFO L199 Difference]: Finished difference. Result has 310 places, 333 transitions [2020-01-16 21:48:00,374 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=19516, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20031, PETRI_PLACES=310, PETRI_TRANSITIONS=333} [2020-01-16 21:48:00,375 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 310 places, 333 transitions [2020-01-16 21:48:00,375 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 310 places, 333 transitions [2020-01-16 21:48:01,711 INFO L129 PetriNetUnfolder]: 182/1018 cut-off events. [2020-01-16 21:48:01,711 INFO L130 PetriNetUnfolder]: For 292478/292711 co-relation queries the response was YES. [2020-01-16 21:48:01,736 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11982 conditions, 1018 events. 182/1018 cut-off events. For 292478/292711 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10663 event pairs. 18/1016 useless extension candidates. Maximal degree in co-relation 11463. Up to 164 conditions per place. [2020-01-16 21:48:01,742 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 310 places, 0 of 333 transitions, 101 of 20031 flow. [2020-01-16 21:48:01,742 INFO L478 AbstractCegarLoop]: Abstraction has has 309 places, 333 transitions [2020-01-16 21:48:01,742 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:48:02,678 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:48:02,678 INFO L130 PetriNetUnfolder]: For 292478/292711 co-relation queries the response was YES. [2020-01-16 21:48:02,678 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:48:02,678 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:48:02,679 INFO L426 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:48:02,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:48:02,679 INFO L82 PathProgramCache]: Analyzing trace with hash -117618559, now seen corresponding path program 32 times [2020-01-16 21:48:02,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:48:02,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806862137] [2020-01-16 21:48:02,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:48:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:48:02,838 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 21:48:02,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806862137] [2020-01-16 21:48:02,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:48:02,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:48:02,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498371932] [2020-01-16 21:48:02,839 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:48:02,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:48:02,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:48:02,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:48:02,840 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:48:02,841 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 333 transitions. Second operand 7 states. [2020-01-16 21:48:02,841 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:48:02,841 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:48:02,841 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:48:04,867 INFO L129 PetriNetUnfolder]: 190/1040 cut-off events. [2020-01-16 21:48:04,867 INFO L130 PetriNetUnfolder]: For 303549/304178 co-relation queries the response was YES. [2020-01-16 21:48:04,893 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12464 conditions, 1040 events. 190/1040 cut-off events. For 303549/304178 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10850 event pairs. 34/1060 useless extension candidates. Maximal degree in co-relation 11936. Up to 168 conditions per place. [2020-01-16 21:48:04,896 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 139 selfloop transitions, 204 changer transitions [2020-01-16 21:48:04,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:48:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:48:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:48:04,897 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:48:04,897 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:48:04,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:48:04,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:48:04,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:48:04,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:48:04,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:48:04,899 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:48:04,899 INFO L174 Difference]: Start difference. First operand has 309 places, 333 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:48:04,904 INFO L199 Difference]: Finished difference. Result has 318 places, 343 transitions [2020-01-16 21:48:04,904 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=19930, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21041, PETRI_PLACES=318, PETRI_TRANSITIONS=343} [2020-01-16 21:48:04,904 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 318 places, 343 transitions [2020-01-16 21:48:04,905 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 318 places, 343 transitions [2020-01-16 21:48:06,314 INFO L129 PetriNetUnfolder]: 182/1017 cut-off events. [2020-01-16 21:48:06,314 INFO L130 PetriNetUnfolder]: For 310359/310582 co-relation queries the response was YES. [2020-01-16 21:48:06,340 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12296 conditions, 1017 events. 182/1017 cut-off events. For 310359/310582 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10658 event pairs. 15/1014 useless extension candidates. Maximal degree in co-relation 11766. Up to 164 conditions per place. [2020-01-16 21:48:06,345 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 318 places, 0 of 343 transitions, 101 of 21041 flow. [2020-01-16 21:48:06,346 INFO L478 AbstractCegarLoop]: Abstraction has has 317 places, 343 transitions [2020-01-16 21:48:06,346 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:48:07,357 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:48:07,357 INFO L130 PetriNetUnfolder]: For 310382/310581 co-relation queries the response was YES. [2020-01-16 21:48:07,357 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:48:07,357 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:48:07,357 INFO L426 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:48:07,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:48:07,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1531085189, now seen corresponding path program 33 times [2020-01-16 21:48:07,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:48:07,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438666832] [2020-01-16 21:48:07,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:48:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:48:07,563 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 21:48:07,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438666832] [2020-01-16 21:48:07,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:48:07,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:48:07,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353345701] [2020-01-16 21:48:07,564 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:48:07,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:48:07,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:48:07,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:48:07,565 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:48:07,565 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 343 transitions. Second operand 7 states. [2020-01-16 21:48:07,566 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:48:07,566 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:48:07,566 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:48:09,735 INFO L129 PetriNetUnfolder]: 188/1032 cut-off events. [2020-01-16 21:48:09,735 INFO L130 PetriNetUnfolder]: For 320436/320830 co-relation queries the response was YES. [2020-01-16 21:48:09,762 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12768 conditions, 1032 events. 188/1032 cut-off events. For 320436/320830 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10748 event pairs. 12/1032 useless extension candidates. Maximal degree in co-relation 12229. Up to 166 conditions per place. [2020-01-16 21:48:09,765 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 153 selfloop transitions, 205 changer transitions [2020-01-16 21:48:09,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:48:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:48:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:48:09,766 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:48:09,766 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:48:09,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:48:09,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:48:09,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:48:09,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:48:09,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:48:09,768 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:48:09,768 INFO L174 Difference]: Start difference. First operand has 317 places, 343 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:48:09,774 INFO L199 Difference]: Finished difference. Result has 326 places, 351 transitions [2020-01-16 21:48:09,774 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=20940, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22000, PETRI_PLACES=326, PETRI_TRANSITIONS=351} [2020-01-16 21:48:09,774 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 326 places, 351 transitions [2020-01-16 21:48:09,774 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 326 places, 351 transitions [2020-01-16 21:48:11,200 INFO L129 PetriNetUnfolder]: 182/1016 cut-off events. [2020-01-16 21:48:11,200 INFO L130 PetriNetUnfolder]: For 328272/328456 co-relation queries the response was YES. [2020-01-16 21:48:11,227 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12571 conditions, 1016 events. 182/1016 cut-off events. For 328272/328456 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10652 event pairs. 5/1007 useless extension candidates. Maximal degree in co-relation 12026. Up to 164 conditions per place. [2020-01-16 21:48:11,232 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 326 places, 0 of 351 transitions, 101 of 22000 flow. [2020-01-16 21:48:11,232 INFO L478 AbstractCegarLoop]: Abstraction has has 325 places, 351 transitions [2020-01-16 21:48:11,232 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:48:12,286 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:48:12,287 INFO L130 PetriNetUnfolder]: For 328137/328321 co-relation queries the response was YES. [2020-01-16 21:48:12,287 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:48:12,287 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:48:12,287 INFO L426 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:48:12,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:48:12,287 INFO L82 PathProgramCache]: Analyzing trace with hash -2075036475, now seen corresponding path program 34 times [2020-01-16 21:48:12,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:48:12,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39498078] [2020-01-16 21:48:12,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:48:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:48:12,476 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 21:48:12,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39498078] [2020-01-16 21:48:12,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:48:12,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:48:12,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984899923] [2020-01-16 21:48:12,477 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:48:12,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:48:12,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:48:12,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:48:12,478 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:48:12,478 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 351 transitions. Second operand 7 states. [2020-01-16 21:48:12,478 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:48:12,478 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:48:12,478 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:48:14,935 INFO L129 PetriNetUnfolder]: 202/1107 cut-off events. [2020-01-16 21:48:14,935 INFO L130 PetriNetUnfolder]: For 364476/365053 co-relation queries the response was YES. [2020-01-16 21:48:14,964 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14006 conditions, 1107 events. 202/1107 cut-off events. For 364476/365053 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 11715 event pairs. 18/1111 useless extension candidates. Maximal degree in co-relation 13452. Up to 180 conditions per place. [2020-01-16 21:48:14,968 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 155 selfloop transitions, 216 changer transitions [2020-01-16 21:48:14,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:48:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:48:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:48:14,969 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:48:14,969 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:48:14,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:48:14,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:48:14,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:48:14,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:48:14,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:48:14,970 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:48:14,970 INFO L174 Difference]: Start difference. First operand has 325 places, 351 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:48:14,977 INFO L199 Difference]: Finished difference. Result has 336 places, 373 transitions [2020-01-16 21:48:14,977 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=21899, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24144, PETRI_PLACES=336, PETRI_TRANSITIONS=373} [2020-01-16 21:48:14,977 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 336 places, 373 transitions [2020-01-16 21:48:14,977 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 336 places, 373 transitions [2020-01-16 21:48:16,659 INFO L129 PetriNetUnfolder]: 195/1089 cut-off events. [2020-01-16 21:48:16,660 INFO L130 PetriNetUnfolder]: For 373903/374079 co-relation queries the response was YES. [2020-01-16 21:48:16,689 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13862 conditions, 1089 events. 195/1089 cut-off events. For 373903/374079 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11593 event pairs. 7/1081 useless extension candidates. Maximal degree in co-relation 13304. Up to 176 conditions per place. [2020-01-16 21:48:16,696 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 336 places, 0 of 373 transitions, 108 of 24144 flow. [2020-01-16 21:48:16,696 INFO L478 AbstractCegarLoop]: Abstraction has has 335 places, 373 transitions [2020-01-16 21:48:16,697 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:48:17,896 INFO L129 PetriNetUnfolder]: 195/1015 cut-off events. [2020-01-16 21:48:17,897 INFO L130 PetriNetUnfolder]: For 376616/377033 co-relation queries the response was YES. [2020-01-16 21:48:17,897 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:48:17,897 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:48:17,897 INFO L426 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:48:17,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:48:17,897 INFO L82 PathProgramCache]: Analyzing trace with hash -550814245, now seen corresponding path program 35 times [2020-01-16 21:48:17,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:48:17,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240068921] [2020-01-16 21:48:17,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:48:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:48:18,046 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 21:48:18,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240068921] [2020-01-16 21:48:18,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:48:18,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:48:18,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748594318] [2020-01-16 21:48:18,047 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:48:18,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:48:18,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:48:18,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:48:18,048 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:48:18,048 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 373 transitions. Second operand 7 states. [2020-01-16 21:48:18,048 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:48:18,048 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:48:18,048 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:48:21,004 INFO L129 PetriNetUnfolder]: 217/1215 cut-off events. [2020-01-16 21:48:21,004 INFO L130 PetriNetUnfolder]: For 430163/430745 co-relation queries the response was YES. [2020-01-16 21:48:21,038 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15891 conditions, 1215 events. 217/1215 cut-off events. For 430163/430745 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 13155 event pairs. 23/1223 useless extension candidates. Maximal degree in co-relation 15282. Up to 199 conditions per place. [2020-01-16 21:48:21,042 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 172 selfloop transitions, 240 changer transitions [2020-01-16 21:48:21,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:48:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:48:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:48:21,043 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:48:21,043 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:48:21,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:48:21,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:48:21,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:48:21,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:48:21,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:48:21,045 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:48:21,045 INFO L174 Difference]: Start difference. First operand has 335 places, 373 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:48:21,052 INFO L199 Difference]: Finished difference. Result has 346 places, 411 transitions [2020-01-16 21:48:21,052 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=24036, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=27596, PETRI_PLACES=346, PETRI_TRANSITIONS=411} [2020-01-16 21:48:21,052 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 346 places, 411 transitions [2020-01-16 21:48:21,052 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 346 places, 411 transitions [2020-01-16 21:48:23,490 INFO L129 PetriNetUnfolder]: 217/1215 cut-off events. [2020-01-16 21:48:23,490 INFO L130 PetriNetUnfolder]: For 445114/445518 co-relation queries the response was YES. [2020-01-16 21:48:23,522 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15933 conditions, 1215 events. 217/1215 cut-off events. For 445114/445518 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13244 event pairs. 10/1206 useless extension candidates. Maximal degree in co-relation 15321. Up to 196 conditions per place. [2020-01-16 21:48:23,531 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 346 places, 0 of 411 transitions, 120 of 27596 flow. [2020-01-16 21:48:23,532 INFO L478 AbstractCegarLoop]: Abstraction has has 345 places, 411 transitions [2020-01-16 21:48:23,532 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:48:25,055 INFO L129 PetriNetUnfolder]: 217/1130 cut-off events. [2020-01-16 21:48:25,055 INFO L130 PetriNetUnfolder]: For 444533/444851 co-relation queries the response was YES. [2020-01-16 21:48:25,056 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:48:25,056 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:48:25,056 INFO L426 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:48:25,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:48:25,056 INFO L82 PathProgramCache]: Analyzing trace with hash -30186183, now seen corresponding path program 1 times [2020-01-16 21:48:25,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:48:25,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510510032] [2020-01-16 21:48:25,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:48:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:48:25,067 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 21:48:25,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510510032] [2020-01-16 21:48:25,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:48:25,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:48:25,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84672969] [2020-01-16 21:48:25,068 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:48:25,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:48:25,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:48:25,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:48:25,069 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 54 [2020-01-16 21:48:25,069 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 411 transitions. Second operand 3 states. [2020-01-16 21:48:25,069 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:48:25,070 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 54 [2020-01-16 21:48:25,070 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:48:27,577 INFO L129 PetriNetUnfolder]: 119/1052 cut-off events. [2020-01-16 21:48:27,577 INFO L130 PetriNetUnfolder]: For 442547/442707 co-relation queries the response was YES. [2020-01-16 21:48:27,601 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15587 conditions, 1052 events. 119/1052 cut-off events. For 442547/442707 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11781 event pairs. 65/1105 useless extension candidates. Maximal degree in co-relation 14985. Up to 127 conditions per place. [2020-01-16 21:48:27,606 INFO L123 encePairwiseOnDemand]: 52/54 looper letters, 1 selfloop transitions, 2 changer transitions [2020-01-16 21:48:27,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:48:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:48:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2020-01-16 21:48:27,607 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2020-01-16 21:48:27,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2020-01-16 21:48:27,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2020-01-16 21:48:27,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:48:27,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2020-01-16 21:48:27,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:48:27,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:48:27,608 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:48:27,608 INFO L174 Difference]: Start difference. First operand has 345 places, 411 transitions. Second operand 3 states and 147 transitions. [2020-01-16 21:48:27,618 INFO L199 Difference]: Finished difference. Result has 347 places, 409 transitions [2020-01-16 21:48:27,619 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=27476, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27468, PETRI_PLACES=347, PETRI_TRANSITIONS=409} [2020-01-16 21:48:27,619 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 347 places, 409 transitions [2020-01-16 21:48:27,619 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 347 places, 409 transitions [2020-01-16 21:48:29,594 INFO L129 PetriNetUnfolder]: 119/1052 cut-off events. [2020-01-16 21:48:29,595 INFO L130 PetriNetUnfolder]: For 444371/444689 co-relation queries the response was YES. [2020-01-16 21:48:29,625 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15489 conditions, 1052 events. 119/1052 cut-off events. For 444371/444689 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11875 event pairs. 11/1042 useless extension candidates. Maximal degree in co-relation 15307. Up to 127 conditions per place. [2020-01-16 21:48:29,631 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 347 places, 0 of 409 transitions, 1 of 27468 flow. [2020-01-16 21:48:29,632 INFO L478 AbstractCegarLoop]: Abstraction has has 346 places, 409 transitions [2020-01-16 21:48:29,632 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:48:30,994 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:48:30,994 INFO L130 PetriNetUnfolder]: For 444371/444689 co-relation queries the response was YES. [2020-01-16 21:48:30,994 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:48:30,995 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:48:30,995 INFO L426 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:48:30,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:48:30,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1887198753, now seen corresponding path program 36 times [2020-01-16 21:48:30,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:48:30,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052804140] [2020-01-16 21:48:30,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:48:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:48:31,144 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 21:48:31,144 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052804140] [2020-01-16 21:48:31,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:48:31,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:48:31,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357106075] [2020-01-16 21:48:31,145 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:48:31,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:48:31,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:48:31,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:48:31,147 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:48:31,147 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 409 transitions. Second operand 7 states. [2020-01-16 21:48:31,147 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:48:31,147 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:48:31,147 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:48:33,967 INFO L129 PetriNetUnfolder]: 119/1051 cut-off events. [2020-01-16 21:48:33,968 INFO L130 PetriNetUnfolder]: For 455129/455544 co-relation queries the response was YES. [2020-01-16 21:48:34,002 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15982 conditions, 1051 events. 119/1051 cut-off events. For 455129/455544 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11765 event pairs. 2/1042 useless extension candidates. Maximal degree in co-relation 15367. Up to 198 conditions per place. [2020-01-16 21:48:34,007 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 167 selfloop transitions, 241 changer transitions [2020-01-16 21:48:34,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:48:34,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:48:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:48:34,009 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:48:34,009 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:48:34,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:48:34,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:48:34,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:48:34,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:48:34,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:48:34,010 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:48:34,010 INFO L174 Difference]: Start difference. First operand has 346 places, 409 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:48:34,018 INFO L199 Difference]: Finished difference. Result has 354 places, 410 transitions [2020-01-16 21:48:34,018 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=27467, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28158, PETRI_PLACES=354, PETRI_TRANSITIONS=410} [2020-01-16 21:48:34,018 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 354 places, 410 transitions [2020-01-16 21:48:34,019 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 354 places, 410 transitions [2020-01-16 21:48:35,989 INFO L129 PetriNetUnfolder]: 119/1051 cut-off events. [2020-01-16 21:48:35,989 INFO L130 PetriNetUnfolder]: For 466950/467268 co-relation queries the response was YES. [2020-01-16 21:48:36,019 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15818 conditions, 1051 events. 119/1051 cut-off events. For 466950/467268 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11838 event pairs. 11/1041 useless extension candidates. Maximal degree in co-relation 15204. Up to 127 conditions per place. [2020-01-16 21:48:36,026 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 354 places, 0 of 410 transitions, 120 of 28158 flow. [2020-01-16 21:48:36,026 INFO L478 AbstractCegarLoop]: Abstraction has has 353 places, 410 transitions [2020-01-16 21:48:36,026 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:48:37,777 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:48:37,777 INFO L130 PetriNetUnfolder]: For 466950/467268 co-relation queries the response was YES. [2020-01-16 21:48:37,778 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:48:37,778 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:48:37,778 INFO L426 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:48:37,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:48:37,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1998031547, now seen corresponding path program 37 times [2020-01-16 21:48:37,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:48:37,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835998765] [2020-01-16 21:48:37,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:48:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:48:37,930 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 21:48:37,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835998765] [2020-01-16 21:48:37,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:48:37,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:48:37,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255327367] [2020-01-16 21:48:37,931 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:48:37,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:48:37,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:48:37,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:48:37,932 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:48:37,932 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 410 transitions. Second operand 7 states. [2020-01-16 21:48:37,932 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:48:37,932 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:48:37,932 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:48:40,832 INFO L129 PetriNetUnfolder]: 119/1050 cut-off events. [2020-01-16 21:48:40,832 INFO L130 PetriNetUnfolder]: For 478006/478421 co-relation queries the response was YES. [2020-01-16 21:48:40,862 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16190 conditions, 1050 events. 119/1050 cut-off events. For 478006/478421 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11732 event pairs. 11/1049 useless extension candidates. Maximal degree in co-relation 15566. Up to 191 conditions per place. [2020-01-16 21:48:40,866 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 164 selfloop transitions, 245 changer transitions [2020-01-16 21:48:40,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:48:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:48:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:48:40,868 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:48:40,868 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:48:40,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:48:40,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:48:40,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:48:40,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:48:40,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:48:40,870 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:48:40,870 INFO L174 Difference]: Start difference. First operand has 353 places, 410 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:48:40,877 INFO L199 Difference]: Finished difference. Result has 361 places, 411 transitions [2020-01-16 21:48:40,877 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=28038, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28754, PETRI_PLACES=361, PETRI_TRANSITIONS=411} [2020-01-16 21:48:40,878 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 361 places, 411 transitions [2020-01-16 21:48:40,878 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 361 places, 411 transitions [2020-01-16 21:48:42,590 INFO L129 PetriNetUnfolder]: 119/1050 cut-off events. [2020-01-16 21:48:42,590 INFO L130 PetriNetUnfolder]: For 490060/490397 co-relation queries the response was YES. [2020-01-16 21:48:42,623 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16026 conditions, 1050 events. 119/1050 cut-off events. For 490060/490397 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11822 event pairs. 11/1041 useless extension candidates. Maximal degree in co-relation 15402. Up to 127 conditions per place. [2020-01-16 21:48:42,630 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 361 places, 0 of 411 transitions, 120 of 28754 flow. [2020-01-16 21:48:42,630 INFO L478 AbstractCegarLoop]: Abstraction has has 360 places, 411 transitions [2020-01-16 21:48:42,630 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:48:44,055 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:48:44,055 INFO L130 PetriNetUnfolder]: For 486912/487026 co-relation queries the response was YES. [2020-01-16 21:48:44,056 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:48:44,056 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:48:44,056 INFO L426 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:48:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:48:44,056 INFO L82 PathProgramCache]: Analyzing trace with hash 592761715, now seen corresponding path program 38 times [2020-01-16 21:48:44,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:48:44,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797556046] [2020-01-16 21:48:44,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:48:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:48:44,183 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 21:48:44,183 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797556046] [2020-01-16 21:48:44,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:48:44,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:48:44,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644949864] [2020-01-16 21:48:44,184 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:48:44,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:48:44,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:48:44,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:48:44,185 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:48:44,185 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 411 transitions. Second operand 7 states. [2020-01-16 21:48:44,185 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:48:44,185 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:48:44,185 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:48:46,990 INFO L129 PetriNetUnfolder]: 119/1049 cut-off events. [2020-01-16 21:48:46,990 INFO L130 PetriNetUnfolder]: For 505345/506306 co-relation queries the response was YES. [2020-01-16 21:48:47,019 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16396 conditions, 1049 events. 119/1049 cut-off events. For 505345/506306 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11757 event pairs. 8/1045 useless extension candidates. Maximal degree in co-relation 15762. Up to 204 conditions per place. [2020-01-16 21:48:47,023 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 148 selfloop transitions, 258 changer transitions [2020-01-16 21:48:47,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:48:47,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:48:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:48:47,025 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:48:47,025 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:48:47,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:48:47,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:48:47,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:48:47,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:48:47,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:48:47,026 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:48:47,026 INFO L174 Difference]: Start difference. First operand has 360 places, 411 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:48:47,034 INFO L199 Difference]: Finished difference. Result has 367 places, 411 transitions [2020-01-16 21:48:47,034 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=28634, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=29270, PETRI_PLACES=367, PETRI_TRANSITIONS=411} [2020-01-16 21:48:47,035 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 367 places, 411 transitions [2020-01-16 21:48:47,035 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 367 places, 411 transitions [2020-01-16 21:48:49,061 INFO L129 PetriNetUnfolder]: 119/1049 cut-off events. [2020-01-16 21:48:49,061 INFO L130 PetriNetUnfolder]: For 510347/510461 co-relation queries the response was YES. [2020-01-16 21:48:49,093 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16210 conditions, 1049 events. 119/1049 cut-off events. For 510347/510461 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11853 event pairs. 6/1034 useless extension candidates. Maximal degree in co-relation 15576. Up to 127 conditions per place. [2020-01-16 21:48:49,100 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 367 places, 0 of 411 transitions, 120 of 29270 flow. [2020-01-16 21:48:49,100 INFO L478 AbstractCegarLoop]: Abstraction has has 366 places, 411 transitions [2020-01-16 21:48:49,100 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:48:50,393 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:48:50,393 INFO L130 PetriNetUnfolder]: For 510347/510461 co-relation queries the response was YES. [2020-01-16 21:48:50,394 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:48:50,394 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:48:50,394 INFO L426 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:48:50,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:48:50,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1618963713, now seen corresponding path program 39 times [2020-01-16 21:48:50,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:48:50,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678075972] [2020-01-16 21:48:50,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:48:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:48:50,571 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 21:48:50,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678075972] [2020-01-16 21:48:50,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:48:50,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:48:50,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189099837] [2020-01-16 21:48:50,572 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:48:50,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:48:50,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:48:50,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:48:50,573 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:48:50,573 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 411 transitions. Second operand 7 states. [2020-01-16 21:48:50,573 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:48:50,574 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:48:50,575 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:48:53,660 INFO L129 PetriNetUnfolder]: 119/1048 cut-off events. [2020-01-16 21:48:53,661 INFO L130 PetriNetUnfolder]: For 529729/530690 co-relation queries the response was YES. [2020-01-16 21:48:53,692 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16578 conditions, 1048 events. 119/1048 cut-off events. For 529729/530690 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11704 event pairs. 32/1068 useless extension candidates. Maximal degree in co-relation 15934. Up to 191 conditions per place. [2020-01-16 21:48:53,697 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 166 selfloop transitions, 249 changer transitions [2020-01-16 21:48:53,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:48:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:48:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:48:53,698 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:48:53,698 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:48:53,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:48:53,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:48:53,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:48:53,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:48:53,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:48:53,699 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:48:53,699 INFO L174 Difference]: Start difference. First operand has 366 places, 411 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:48:53,707 INFO L199 Difference]: Finished difference. Result has 374 places, 415 transitions [2020-01-16 21:48:53,707 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=29150, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=30066, PETRI_PLACES=374, PETRI_TRANSITIONS=415} [2020-01-16 21:48:53,707 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 374 places, 415 transitions [2020-01-16 21:48:53,707 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 374 places, 415 transitions [2020-01-16 21:48:55,573 INFO L129 PetriNetUnfolder]: 119/1048 cut-off events. [2020-01-16 21:48:55,574 INFO L130 PetriNetUnfolder]: For 535547/535664 co-relation queries the response was YES. [2020-01-16 21:48:55,603 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16456 conditions, 1048 events. 119/1048 cut-off events. For 535547/535664 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11816 event pairs. 6/1033 useless extension candidates. Maximal degree in co-relation 15811. Up to 127 conditions per place. [2020-01-16 21:48:55,610 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 374 places, 0 of 415 transitions, 120 of 30066 flow. [2020-01-16 21:48:55,611 INFO L478 AbstractCegarLoop]: Abstraction has has 373 places, 415 transitions [2020-01-16 21:48:55,611 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:48:57,104 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:48:57,104 INFO L130 PetriNetUnfolder]: For 535614/535739 co-relation queries the response was YES. [2020-01-16 21:48:57,105 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:48:57,105 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:48:57,105 INFO L426 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:48:57,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:48:57,105 INFO L82 PathProgramCache]: Analyzing trace with hash -721209453, now seen corresponding path program 40 times [2020-01-16 21:48:57,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:48:57,105 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357556628] [2020-01-16 21:48:57,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:48:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:48:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:48:57,261 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357556628] [2020-01-16 21:48:57,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:48:57,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:48:57,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379263422] [2020-01-16 21:48:57,262 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:48:57,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:48:57,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:48:57,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:48:57,263 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:48:57,263 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 415 transitions. Second operand 7 states. [2020-01-16 21:48:57,263 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:48:57,263 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:48:57,263 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:49:00,248 INFO L129 PetriNetUnfolder]: 119/1047 cut-off events. [2020-01-16 21:49:00,248 INFO L130 PetriNetUnfolder]: For 555351/556324 co-relation queries the response was YES. [2020-01-16 21:49:00,279 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16822 conditions, 1047 events. 119/1047 cut-off events. For 555351/556324 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11672 event pairs. 8/1042 useless extension candidates. Maximal degree in co-relation 16167. Up to 196 conditions per place. [2020-01-16 21:49:00,284 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 173 selfloop transitions, 240 changer transitions [2020-01-16 21:49:00,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:49:00,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:49:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:49:00,285 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:49:00,285 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:49:00,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:49:00,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:49:00,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:49:00,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:49:00,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:49:00,286 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:49:00,286 INFO L174 Difference]: Start difference. First operand has 373 places, 415 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:49:00,293 INFO L199 Difference]: Finished difference. Result has 381 places, 416 transitions [2020-01-16 21:49:00,294 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=29946, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=30619, PETRI_PLACES=381, PETRI_TRANSITIONS=416} [2020-01-16 21:49:00,294 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 381 places, 416 transitions [2020-01-16 21:49:00,294 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 381 places, 416 transitions [2020-01-16 21:49:02,448 INFO L129 PetriNetUnfolder]: 119/1047 cut-off events. [2020-01-16 21:49:02,449 INFO L130 PetriNetUnfolder]: For 560055/560180 co-relation queries the response was YES. [2020-01-16 21:49:02,481 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16661 conditions, 1047 events. 119/1047 cut-off events. For 560055/560180 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11827 event pairs. 6/1034 useless extension candidates. Maximal degree in co-relation 16005. Up to 127 conditions per place. [2020-01-16 21:49:02,488 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 381 places, 0 of 416 transitions, 120 of 30619 flow. [2020-01-16 21:49:02,488 INFO L478 AbstractCegarLoop]: Abstraction has has 380 places, 416 transitions [2020-01-16 21:49:02,489 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:49:04,292 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:49:04,292 INFO L130 PetriNetUnfolder]: For 560055/560180 co-relation queries the response was YES. [2020-01-16 21:49:04,292 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:49:04,292 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:49:04,292 INFO L426 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:49:04,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:49:04,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1441691037, now seen corresponding path program 41 times [2020-01-16 21:49:04,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:49:04,293 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892323740] [2020-01-16 21:49:04,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:49:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:49:04,462 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 21:49:04,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892323740] [2020-01-16 21:49:04,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:49:04,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:49:04,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531945152] [2020-01-16 21:49:04,464 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:49:04,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:49:04,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:49:04,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:49:04,465 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:49:04,465 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 416 transitions. Second operand 7 states. [2020-01-16 21:49:04,465 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:49:04,465 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:49:04,465 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:49:07,706 INFO L129 PetriNetUnfolder]: 119/1046 cut-off events. [2020-01-16 21:49:07,706 INFO L130 PetriNetUnfolder]: For 580162/581135 co-relation queries the response was YES. [2020-01-16 21:49:07,732 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17025 conditions, 1046 events. 119/1046 cut-off events. For 580162/581135 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11666 event pairs. 45/1079 useless extension candidates. Maximal degree in co-relation 16359. Up to 196 conditions per place. [2020-01-16 21:49:07,737 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 180 selfloop transitions, 244 changer transitions [2020-01-16 21:49:07,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:49:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:49:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:49:07,738 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:49:07,738 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:49:07,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:49:07,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:49:07,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:49:07,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:49:07,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:49:07,739 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:49:07,739 INFO L174 Difference]: Start difference. First operand has 380 places, 416 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:49:07,747 INFO L199 Difference]: Finished difference. Result has 390 places, 424 transitions [2020-01-16 21:49:07,747 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=30499, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31741, PETRI_PLACES=390, PETRI_TRANSITIONS=424} [2020-01-16 21:49:07,747 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 390 places, 424 transitions [2020-01-16 21:49:07,747 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 390 places, 424 transitions [2020-01-16 21:49:09,958 INFO L129 PetriNetUnfolder]: 119/1046 cut-off events. [2020-01-16 21:49:09,959 INFO L130 PetriNetUnfolder]: For 587781/587906 co-relation queries the response was YES. [2020-01-16 21:49:09,992 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17045 conditions, 1046 events. 119/1046 cut-off events. For 587781/587906 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11772 event pairs. 6/1033 useless extension candidates. Maximal degree in co-relation 16367. Up to 127 conditions per place. [2020-01-16 21:49:09,999 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 390 places, 0 of 424 transitions, 120 of 31741 flow. [2020-01-16 21:49:10,000 INFO L478 AbstractCegarLoop]: Abstraction has has 389 places, 424 transitions [2020-01-16 21:49:10,000 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:49:11,537 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:49:11,537 INFO L130 PetriNetUnfolder]: For 587712/587829 co-relation queries the response was YES. [2020-01-16 21:49:11,537 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:49:11,538 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:49:11,538 INFO L426 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:49:11,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:49:11,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1966413917, now seen corresponding path program 42 times [2020-01-16 21:49:11,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:49:11,538 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139428530] [2020-01-16 21:49:11,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:49:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:49:11,711 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 21:49:11,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139428530] [2020-01-16 21:49:11,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:49:11,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:49:11,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869077516] [2020-01-16 21:49:11,713 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:49:11,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:49:11,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:49:11,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:49:11,713 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:49:11,713 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 424 transitions. Second operand 7 states. [2020-01-16 21:49:11,714 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:49:11,714 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:49:11,714 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:49:14,965 INFO L129 PetriNetUnfolder]: 119/1045 cut-off events. [2020-01-16 21:49:14,965 INFO L130 PetriNetUnfolder]: For 603807/604262 co-relation queries the response was YES. [2020-01-16 21:49:14,999 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17407 conditions, 1045 events. 119/1045 cut-off events. For 603807/604262 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11680 event pairs. 12/1045 useless extension candidates. Maximal degree in co-relation 16719. Up to 193 conditions per place. [2020-01-16 21:49:15,004 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 179 selfloop transitions, 244 changer transitions [2020-01-16 21:49:15,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:49:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:49:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:49:15,005 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:49:15,005 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:49:15,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:49:15,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:49:15,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:49:15,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:49:15,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:49:15,007 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:49:15,007 INFO L174 Difference]: Start difference. First operand has 389 places, 424 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:49:15,016 INFO L199 Difference]: Finished difference. Result has 398 places, 426 transitions [2020-01-16 21:49:15,017 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=31621, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32451, PETRI_PLACES=398, PETRI_TRANSITIONS=426} [2020-01-16 21:49:15,017 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 398 places, 426 transitions [2020-01-16 21:49:15,017 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 398 places, 426 transitions [2020-01-16 21:49:17,130 INFO L129 PetriNetUnfolder]: 119/1045 cut-off events. [2020-01-16 21:49:17,130 INFO L130 PetriNetUnfolder]: For 614404/614521 co-relation queries the response was YES. [2020-01-16 21:49:17,156 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17306 conditions, 1045 events. 119/1045 cut-off events. For 614404/614521 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11763 event pairs. 6/1032 useless extension candidates. Maximal degree in co-relation 16615. Up to 127 conditions per place. [2020-01-16 21:49:17,164 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 398 places, 0 of 426 transitions, 120 of 32451 flow. [2020-01-16 21:49:17,164 INFO L478 AbstractCegarLoop]: Abstraction has has 397 places, 426 transitions [2020-01-16 21:49:17,164 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:49:18,779 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:49:18,779 INFO L130 PetriNetUnfolder]: For 614957/615123 co-relation queries the response was YES. [2020-01-16 21:49:18,779 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:49:18,779 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:49:18,780 INFO L426 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:49:18,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:49:18,780 INFO L82 PathProgramCache]: Analyzing trace with hash 438350239, now seen corresponding path program 43 times [2020-01-16 21:49:18,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:49:18,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017037907] [2020-01-16 21:49:18,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:49:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:49:18,935 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 21:49:18,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017037907] [2020-01-16 21:49:18,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:49:18,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:49:18,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611028151] [2020-01-16 21:49:18,936 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:49:18,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:49:18,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:49:18,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:49:18,937 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:49:18,937 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 426 transitions. Second operand 7 states. [2020-01-16 21:49:18,937 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:49:18,937 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:49:18,938 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:49:21,986 INFO L129 PetriNetUnfolder]: 119/1044 cut-off events. [2020-01-16 21:49:21,986 INFO L130 PetriNetUnfolder]: For 630827/631282 co-relation queries the response was YES. [2020-01-16 21:49:22,016 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17666 conditions, 1044 events. 119/1044 cut-off events. For 630827/631282 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11669 event pairs. 37/1069 useless extension candidates. Maximal degree in co-relation 16965. Up to 196 conditions per place. [2020-01-16 21:49:22,021 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 178 selfloop transitions, 242 changer transitions [2020-01-16 21:49:22,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:49:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:49:22,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:49:22,022 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:49:22,022 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:49:22,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:49:22,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:49:22,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:49:22,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:49:22,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:49:22,023 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:49:22,023 INFO L174 Difference]: Start difference. First operand has 397 places, 426 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:49:22,031 INFO L199 Difference]: Finished difference. Result has 404 places, 426 transitions [2020-01-16 21:49:22,031 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=32331, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32935, PETRI_PLACES=404, PETRI_TRANSITIONS=426} [2020-01-16 21:49:22,032 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 404 places, 426 transitions [2020-01-16 21:49:22,032 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 404 places, 426 transitions [2020-01-16 21:49:24,338 INFO L129 PetriNetUnfolder]: 119/1044 cut-off events. [2020-01-16 21:49:24,338 INFO L130 PetriNetUnfolder]: For 640256/640414 co-relation queries the response was YES. [2020-01-16 21:49:24,372 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17480 conditions, 1044 events. 119/1044 cut-off events. For 640256/640414 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11728 event pairs. 8/1032 useless extension candidates. Maximal degree in co-relation 16783. Up to 127 conditions per place. [2020-01-16 21:49:24,381 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 404 places, 0 of 426 transitions, 120 of 32935 flow. [2020-01-16 21:49:24,381 INFO L478 AbstractCegarLoop]: Abstraction has has 403 places, 426 transitions [2020-01-16 21:49:24,381 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:49:25,812 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:49:25,812 INFO L130 PetriNetUnfolder]: For 639706/639818 co-relation queries the response was YES. [2020-01-16 21:49:25,812 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:49:25,812 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:49:25,813 INFO L426 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:49:25,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:49:25,813 INFO L82 PathProgramCache]: Analyzing trace with hash 65518797, now seen corresponding path program 44 times [2020-01-16 21:49:25,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:49:25,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749890366] [2020-01-16 21:49:25,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:49:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:49:25,999 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 21:49:25,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749890366] [2020-01-16 21:49:25,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:49:25,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:49:26,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816219456] [2020-01-16 21:49:26,000 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:49:26,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:49:26,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:49:26,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:49:26,002 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:49:26,002 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 426 transitions. Second operand 7 states. [2020-01-16 21:49:26,002 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:49:26,002 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:49:26,003 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:49:30,033 INFO L129 PetriNetUnfolder]: 119/1043 cut-off events. [2020-01-16 21:49:30,033 INFO L130 PetriNetUnfolder]: For 656202/656646 co-relation queries the response was YES. [2020-01-16 21:49:30,061 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17838 conditions, 1043 events. 119/1043 cut-off events. For 656202/656646 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11648 event pairs. 3/1034 useless extension candidates. Maximal degree in co-relation 17131. Up to 193 conditions per place. [2020-01-16 21:49:30,066 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 181 selfloop transitions, 244 changer transitions [2020-01-16 21:49:30,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:49:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:49:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:49:30,067 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:49:30,067 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:49:30,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:49:30,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:49:30,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:49:30,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:49:30,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:49:30,068 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:49:30,068 INFO L174 Difference]: Start difference. First operand has 403 places, 426 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:49:30,078 INFO L199 Difference]: Finished difference. Result has 411 places, 427 transitions [2020-01-16 21:49:30,079 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=32815, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33562, PETRI_PLACES=411, PETRI_TRANSITIONS=427} [2020-01-16 21:49:30,079 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 411 places, 427 transitions [2020-01-16 21:49:30,079 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 411 places, 427 transitions [2020-01-16 21:49:32,428 INFO L129 PetriNetUnfolder]: 119/1043 cut-off events. [2020-01-16 21:49:32,428 INFO L130 PetriNetUnfolder]: For 667196/667308 co-relation queries the response was YES. [2020-01-16 21:49:32,463 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17713 conditions, 1043 events. 119/1043 cut-off events. For 667196/667308 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11748 event pairs. 6/1030 useless extension candidates. Maximal degree in co-relation 17002. Up to 127 conditions per place. [2020-01-16 21:49:32,471 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 411 places, 0 of 427 transitions, 120 of 33562 flow. [2020-01-16 21:49:32,471 INFO L478 AbstractCegarLoop]: Abstraction has has 410 places, 427 transitions [2020-01-16 21:49:32,472 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:49:34,121 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:49:34,121 INFO L130 PetriNetUnfolder]: For 667196/667308 co-relation queries the response was YES. [2020-01-16 21:49:34,121 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:49:34,121 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:49:34,121 INFO L426 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:49:34,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:49:34,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1888859967, now seen corresponding path program 45 times [2020-01-16 21:49:34,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:49:34,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402460098] [2020-01-16 21:49:34,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:49:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:49:34,269 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 21:49:34,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402460098] [2020-01-16 21:49:34,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:49:34,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:49:34,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796371611] [2020-01-16 21:49:34,270 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:49:34,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:49:34,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:49:34,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:49:34,270 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:49:34,270 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 427 transitions. Second operand 7 states. [2020-01-16 21:49:34,271 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:49:34,271 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:49:34,271 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:49:37,770 INFO L129 PetriNetUnfolder]: 119/1042 cut-off events. [2020-01-16 21:49:37,770 INFO L130 PetriNetUnfolder]: For 683970/684414 co-relation queries the response was YES. [2020-01-16 21:49:37,805 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18069 conditions, 1042 events. 119/1042 cut-off events. For 683970/684414 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11623 event pairs. 3/1033 useless extension candidates. Maximal degree in co-relation 17348. Up to 200 conditions per place. [2020-01-16 21:49:37,810 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 164 selfloop transitions, 259 changer transitions [2020-01-16 21:49:37,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:49:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:49:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:49:37,811 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:49:37,811 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:49:37,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:49:37,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:49:37,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:49:37,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:49:37,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:49:37,812 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:49:37,812 INFO L174 Difference]: Start difference. First operand has 410 places, 427 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:49:37,821 INFO L199 Difference]: Finished difference. Result has 418 places, 428 transitions [2020-01-16 21:49:37,821 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=33442, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34253, PETRI_PLACES=418, PETRI_TRANSITIONS=428} [2020-01-16 21:49:37,821 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 418 places, 428 transitions [2020-01-16 21:49:37,821 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 418 places, 428 transitions [2020-01-16 21:49:39,752 INFO L129 PetriNetUnfolder]: 119/1042 cut-off events. [2020-01-16 21:49:39,753 INFO L130 PetriNetUnfolder]: For 695220/695324 co-relation queries the response was YES. [2020-01-16 21:49:39,782 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17944 conditions, 1042 events. 119/1042 cut-off events. For 695220/695324 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11782 event pairs. 6/1027 useless extension candidates. Maximal degree in co-relation 17223. Up to 127 conditions per place. [2020-01-16 21:49:39,790 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 418 places, 0 of 428 transitions, 120 of 34253 flow. [2020-01-16 21:49:39,790 INFO L478 AbstractCegarLoop]: Abstraction has has 417 places, 428 transitions [2020-01-16 21:49:39,790 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:49:41,467 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:49:41,467 INFO L130 PetriNetUnfolder]: For 695220/695324 co-relation queries the response was YES. [2020-01-16 21:49:41,467 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:49:41,467 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:49:41,467 INFO L426 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:49:41,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:49:41,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1191800435, now seen corresponding path program 46 times [2020-01-16 21:49:41,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:49:41,468 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194524476] [2020-01-16 21:49:41,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:49:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:49:41,597 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 21:49:41,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194524476] [2020-01-16 21:49:41,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:49:41,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:49:41,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004435094] [2020-01-16 21:49:41,598 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:49:41,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:49:41,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:49:41,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:49:41,598 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:49:41,599 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 428 transitions. Second operand 7 states. [2020-01-16 21:49:41,599 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:49:41,599 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:49:41,599 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:49:45,120 INFO L129 PetriNetUnfolder]: 119/1041 cut-off events. [2020-01-16 21:49:45,120 INFO L130 PetriNetUnfolder]: For 711995/712408 co-relation queries the response was YES. [2020-01-16 21:49:45,154 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18298 conditions, 1041 events. 119/1041 cut-off events. For 711995/712408 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11627 event pairs. 21/1050 useless extension candidates. Maximal degree in co-relation 17567. Up to 185 conditions per place. [2020-01-16 21:49:45,160 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 174 selfloop transitions, 250 changer transitions [2020-01-16 21:49:45,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:49:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:49:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:49:45,161 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:49:45,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:49:45,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:49:45,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:49:45,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:49:45,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:49:45,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:49:45,162 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:49:45,162 INFO L174 Difference]: Start difference. First operand has 417 places, 428 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:49:45,173 INFO L199 Difference]: Finished difference. Result has 424 places, 428 transitions [2020-01-16 21:49:45,173 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=34133, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34753, PETRI_PLACES=424, PETRI_TRANSITIONS=428} [2020-01-16 21:49:45,173 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 424 places, 428 transitions [2020-01-16 21:49:45,174 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 424 places, 428 transitions [2020-01-16 21:49:47,616 INFO L129 PetriNetUnfolder]: 119/1041 cut-off events. [2020-01-16 21:49:47,616 INFO L130 PetriNetUnfolder]: For 722391/722499 co-relation queries the response was YES. [2020-01-16 21:49:47,642 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18112 conditions, 1041 events. 119/1041 cut-off events. For 722391/722499 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11733 event pairs. 6/1025 useless extension candidates. Maximal degree in co-relation 17387. Up to 127 conditions per place. [2020-01-16 21:49:47,651 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 424 places, 0 of 428 transitions, 120 of 34753 flow. [2020-01-16 21:49:47,651 INFO L478 AbstractCegarLoop]: Abstraction has has 423 places, 428 transitions [2020-01-16 21:49:47,651 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:49:49,371 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:49:49,371 INFO L130 PetriNetUnfolder]: For 722391/722499 co-relation queries the response was YES. [2020-01-16 21:49:49,371 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:49:49,371 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:49:49,372 INFO L426 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:49:49,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:49:49,372 INFO L82 PathProgramCache]: Analyzing trace with hash 784146067, now seen corresponding path program 47 times [2020-01-16 21:49:49,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:49:49,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686237407] [2020-01-16 21:49:49,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:49:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:49:49,516 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 21:49:49,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686237407] [2020-01-16 21:49:49,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:49:49,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:49:49,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371878394] [2020-01-16 21:49:49,517 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:49:49,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:49:49,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:49:49,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:49:49,517 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:49:49,517 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 428 transitions. Second operand 7 states. [2020-01-16 21:49:49,517 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:49:49,518 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:49:49,518 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:49:52,806 INFO L129 PetriNetUnfolder]: 119/1040 cut-off events. [2020-01-16 21:49:52,807 INFO L130 PetriNetUnfolder]: For 739564/739984 co-relation queries the response was YES. [2020-01-16 21:49:52,839 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18464 conditions, 1040 events. 119/1040 cut-off events. For 739564/739984 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11591 event pairs. 23/1051 useless extension candidates. Maximal degree in co-relation 17729. Up to 195 conditions per place. [2020-01-16 21:49:52,845 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 184 selfloop transitions, 248 changer transitions [2020-01-16 21:49:52,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:49:52,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:49:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:49:52,846 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:49:52,846 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:49:52,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:49:52,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:49:52,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:49:52,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:49:52,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:49:52,847 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:49:52,847 INFO L174 Difference]: Start difference. First operand has 423 places, 428 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:49:52,855 INFO L199 Difference]: Finished difference. Result has 431 places, 434 transitions [2020-01-16 21:49:52,856 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=34633, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35775, PETRI_PLACES=431, PETRI_TRANSITIONS=434} [2020-01-16 21:49:52,856 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 431 places, 434 transitions [2020-01-16 21:49:52,856 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 431 places, 434 transitions [2020-01-16 21:49:55,326 INFO L129 PetriNetUnfolder]: 119/1040 cut-off events. [2020-01-16 21:49:55,326 INFO L130 PetriNetUnfolder]: For 751553/751662 co-relation queries the response was YES. [2020-01-16 21:49:55,363 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18345 conditions, 1040 events. 119/1040 cut-off events. For 751553/751662 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11700 event pairs. 6/1024 useless extension candidates. Maximal degree in co-relation 17615. Up to 127 conditions per place. [2020-01-16 21:49:55,371 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 431 places, 0 of 434 transitions, 120 of 35775 flow. [2020-01-16 21:49:55,371 INFO L478 AbstractCegarLoop]: Abstraction has has 430 places, 434 transitions [2020-01-16 21:49:55,372 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:49:57,530 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:49:57,531 INFO L130 PetriNetUnfolder]: For 751475/751584 co-relation queries the response was YES. [2020-01-16 21:49:57,531 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:49:57,531 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:49:57,531 INFO L426 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:49:57,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:49:57,531 INFO L82 PathProgramCache]: Analyzing trace with hash 543974085, now seen corresponding path program 48 times [2020-01-16 21:49:57,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:49:57,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31509720] [2020-01-16 21:49:57,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:49:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:49:57,697 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 21:49:57,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31509720] [2020-01-16 21:49:57,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:49:57,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:49:57,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958039256] [2020-01-16 21:49:57,698 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:49:57,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:49:57,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:49:57,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:49:57,698 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:49:57,699 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 434 transitions. Second operand 7 states. [2020-01-16 21:49:57,699 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:49:57,699 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:49:57,699 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:50:01,216 INFO L129 PetriNetUnfolder]: 119/1039 cut-off events. [2020-01-16 21:50:01,216 INFO L130 PetriNetUnfolder]: For 769128/769569 co-relation queries the response was YES. [2020-01-16 21:50:01,247 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18695 conditions, 1039 events. 119/1039 cut-off events. For 769128/769569 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11569 event pairs. 32/1059 useless extension candidates. Maximal degree in co-relation 17955. Up to 192 conditions per place. [2020-01-16 21:50:01,252 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 186 selfloop transitions, 246 changer transitions [2020-01-16 21:50:01,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:50:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:50:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:50:01,253 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:50:01,253 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:50:01,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:50:01,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:50:01,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:50:01,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:50:01,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:50:01,255 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:50:01,255 INFO L174 Difference]: Start difference. First operand has 430 places, 434 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:50:01,263 INFO L199 Difference]: Finished difference. Result has 437 places, 434 transitions [2020-01-16 21:50:01,264 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=35655, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=36267, PETRI_PLACES=437, PETRI_TRANSITIONS=434} [2020-01-16 21:50:01,264 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 437 places, 434 transitions [2020-01-16 21:50:01,264 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 437 places, 434 transitions [2020-01-16 21:50:03,755 INFO L129 PetriNetUnfolder]: 119/1039 cut-off events. [2020-01-16 21:50:03,755 INFO L130 PetriNetUnfolder]: For 779109/779205 co-relation queries the response was YES. [2020-01-16 21:50:03,792 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18509 conditions, 1039 events. 119/1039 cut-off events. For 779109/779205 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11711 event pairs. 4/1023 useless extension candidates. Maximal degree in co-relation 17770. Up to 127 conditions per place. [2020-01-16 21:50:03,800 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 437 places, 0 of 434 transitions, 120 of 36267 flow. [2020-01-16 21:50:03,801 INFO L478 AbstractCegarLoop]: Abstraction has has 436 places, 434 transitions [2020-01-16 21:50:03,801 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:50:05,509 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:50:05,509 INFO L130 PetriNetUnfolder]: For 779762/779911 co-relation queries the response was YES. [2020-01-16 21:50:05,509 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:50:05,510 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:50:05,510 INFO L426 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:50:05,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:50:05,510 INFO L82 PathProgramCache]: Analyzing trace with hash -604536729, now seen corresponding path program 49 times [2020-01-16 21:50:05,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:50:05,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15054748] [2020-01-16 21:50:05,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:50:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:50:05,673 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 21:50:05,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15054748] [2020-01-16 21:50:05,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:50:05,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:50:05,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303552824] [2020-01-16 21:50:05,674 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:50:05,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:50:05,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:50:05,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:50:05,675 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:50:05,675 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 434 transitions. Second operand 7 states. [2020-01-16 21:50:05,675 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:50:05,675 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:50:05,675 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:50:09,359 INFO L129 PetriNetUnfolder]: 119/1038 cut-off events. [2020-01-16 21:50:09,359 INFO L130 PetriNetUnfolder]: For 796660/797042 co-relation queries the response was YES. [2020-01-16 21:50:09,388 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18857 conditions, 1038 events. 119/1038 cut-off events. For 796660/797042 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11591 event pairs. 3/1029 useless extension candidates. Maximal degree in co-relation 18108. Up to 191 conditions per place. [2020-01-16 21:50:09,393 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 250 changer transitions [2020-01-16 21:50:09,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:50:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:50:09,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:50:09,394 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:50:09,394 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:50:09,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:50:09,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:50:09,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:50:09,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:50:09,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:50:09,396 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:50:09,396 INFO L174 Difference]: Start difference. First operand has 436 places, 434 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:50:09,406 INFO L199 Difference]: Finished difference. Result has 444 places, 436 transitions [2020-01-16 21:50:09,406 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=36147, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=36945, PETRI_PLACES=444, PETRI_TRANSITIONS=436} [2020-01-16 21:50:09,406 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 444 places, 436 transitions [2020-01-16 21:50:09,406 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 444 places, 436 transitions [2020-01-16 21:50:11,946 INFO L129 PetriNetUnfolder]: 119/1038 cut-off events. [2020-01-16 21:50:11,946 INFO L130 PetriNetUnfolder]: For 809003/809152 co-relation queries the response was YES. [2020-01-16 21:50:11,983 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18694 conditions, 1038 events. 119/1038 cut-off events. For 809003/809152 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11692 event pairs. 4/1021 useless extension candidates. Maximal degree in co-relation 17945. Up to 127 conditions per place. [2020-01-16 21:50:11,991 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 444 places, 0 of 436 transitions, 120 of 36945 flow. [2020-01-16 21:50:11,992 INFO L478 AbstractCegarLoop]: Abstraction has has 443 places, 436 transitions [2020-01-16 21:50:11,992 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:50:13,595 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:50:13,596 INFO L130 PetriNetUnfolder]: For 809003/809152 co-relation queries the response was YES. [2020-01-16 21:50:13,596 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:50:13,596 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:50:13,596 INFO L426 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:50:13,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:50:13,596 INFO L82 PathProgramCache]: Analyzing trace with hash 787664151, now seen corresponding path program 50 times [2020-01-16 21:50:13,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:50:13,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793505274] [2020-01-16 21:50:13,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:50:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:50:13,734 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 21:50:13,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793505274] [2020-01-16 21:50:13,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:50:13,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:50:13,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478956225] [2020-01-16 21:50:13,735 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:50:13,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:50:13,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:50:13,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:50:13,736 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:50:13,736 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 436 transitions. Second operand 7 states. [2020-01-16 21:50:13,736 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:50:13,736 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:50:13,737 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:50:17,502 INFO L129 PetriNetUnfolder]: 119/1037 cut-off events. [2020-01-16 21:50:17,502 INFO L130 PetriNetUnfolder]: For 826742/827286 co-relation queries the response was YES. [2020-01-16 21:50:17,531 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19040 conditions, 1037 events. 119/1037 cut-off events. For 826742/827286 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11572 event pairs. 5/1030 useless extension candidates. Maximal degree in co-relation 18281. Up to 197 conditions per place. [2020-01-16 21:50:17,537 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 170 selfloop transitions, 259 changer transitions [2020-01-16 21:50:17,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:50:17,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:50:17,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:50:17,538 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:50:17,538 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:50:17,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:50:17,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:50:17,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:50:17,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:50:17,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:50:17,539 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:50:17,539 INFO L174 Difference]: Start difference. First operand has 443 places, 436 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:50:17,548 INFO L199 Difference]: Finished difference. Result has 450 places, 436 transitions [2020-01-16 21:50:17,548 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=36825, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37463, PETRI_PLACES=450, PETRI_TRANSITIONS=436} [2020-01-16 21:50:17,548 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 450 places, 436 transitions [2020-01-16 21:50:17,549 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 450 places, 436 transitions [2020-01-16 21:50:20,121 INFO L129 PetriNetUnfolder]: 119/1037 cut-off events. [2020-01-16 21:50:20,121 INFO L130 PetriNetUnfolder]: For 838433/838582 co-relation queries the response was YES. [2020-01-16 21:50:20,158 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18854 conditions, 1037 events. 119/1037 cut-off events. For 838433/838582 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11631 event pairs. 4/1020 useless extension candidates. Maximal degree in co-relation 18098. Up to 127 conditions per place. [2020-01-16 21:50:20,167 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 450 places, 0 of 436 transitions, 120 of 37463 flow. [2020-01-16 21:50:20,167 INFO L478 AbstractCegarLoop]: Abstraction has has 449 places, 436 transitions [2020-01-16 21:50:20,167 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:50:21,834 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:50:21,835 INFO L130 PetriNetUnfolder]: For 838433/838582 co-relation queries the response was YES. [2020-01-16 21:50:21,835 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:50:21,835 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:50:21,835 INFO L426 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:50:21,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:50:21,836 INFO L82 PathProgramCache]: Analyzing trace with hash 634677087, now seen corresponding path program 51 times [2020-01-16 21:50:21,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:50:21,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268925794] [2020-01-16 21:50:21,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:50:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:50:22,004 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 21:50:22,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268925794] [2020-01-16 21:50:22,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:50:22,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:50:22,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675865303] [2020-01-16 21:50:22,005 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:50:22,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:50:22,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:50:22,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:50:22,007 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:50:22,007 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 436 transitions. Second operand 7 states. [2020-01-16 21:50:22,007 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:50:22,007 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:50:22,007 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:50:26,414 INFO L129 PetriNetUnfolder]: 119/1036 cut-off events. [2020-01-16 21:50:26,414 INFO L130 PetriNetUnfolder]: For 856443/856987 co-relation queries the response was YES. [2020-01-16 21:50:26,444 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19198 conditions, 1036 events. 119/1036 cut-off events. For 856443/856987 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11569 event pairs. 38/1063 useless extension candidates. Maximal degree in co-relation 18432. Up to 192 conditions per place. [2020-01-16 21:50:26,450 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 179 selfloop transitions, 255 changer transitions [2020-01-16 21:50:26,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:50:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:50:26,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:50:26,451 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:50:26,451 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:50:26,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:50:26,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:50:26,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:50:26,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:50:26,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:50:26,452 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:50:26,452 INFO L174 Difference]: Start difference. First operand has 449 places, 436 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:50:26,461 INFO L199 Difference]: Finished difference. Result has 456 places, 436 transitions [2020-01-16 21:50:26,462 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=37343, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37973, PETRI_PLACES=456, PETRI_TRANSITIONS=436} [2020-01-16 21:50:26,462 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 456 places, 436 transitions [2020-01-16 21:50:26,462 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 456 places, 436 transitions [2020-01-16 21:50:29,077 INFO L129 PetriNetUnfolder]: 119/1036 cut-off events. [2020-01-16 21:50:29,078 INFO L130 PetriNetUnfolder]: For 867571/867705 co-relation queries the response was YES. [2020-01-16 21:50:29,116 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19012 conditions, 1036 events. 119/1036 cut-off events. For 867571/867705 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11598 event pairs. 2/1016 useless extension candidates. Maximal degree in co-relation 18246. Up to 127 conditions per place. [2020-01-16 21:50:29,125 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 456 places, 0 of 436 transitions, 120 of 37973 flow. [2020-01-16 21:50:29,125 INFO L478 AbstractCegarLoop]: Abstraction has has 455 places, 436 transitions [2020-01-16 21:50:29,125 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:50:30,690 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:50:30,690 INFO L130 PetriNetUnfolder]: For 867571/867705 co-relation queries the response was YES. [2020-01-16 21:50:30,690 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:50:30,690 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:50:30,691 INFO L426 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:50:30,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:50:30,691 INFO L82 PathProgramCache]: Analyzing trace with hash 577387645, now seen corresponding path program 52 times [2020-01-16 21:50:30,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:50:30,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307822205] [2020-01-16 21:50:30,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:50:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:50:30,839 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 21:50:30,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307822205] [2020-01-16 21:50:30,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:50:30,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:50:30,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652794384] [2020-01-16 21:50:30,841 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:50:30,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:50:30,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:50:30,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:50:30,842 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:50:30,843 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 436 transitions. Second operand 7 states. [2020-01-16 21:50:30,843 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:50:30,843 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:50:30,843 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:50:34,652 INFO L129 PetriNetUnfolder]: 119/1035 cut-off events. [2020-01-16 21:50:34,652 INFO L130 PetriNetUnfolder]: For 886050/886594 co-relation queries the response was YES. [2020-01-16 21:50:34,683 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19354 conditions, 1035 events. 119/1035 cut-off events. For 886050/886594 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11559 event pairs. 5/1029 useless extension candidates. Maximal degree in co-relation 18578. Up to 195 conditions per place. [2020-01-16 21:50:34,688 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 175 selfloop transitions, 258 changer transitions [2020-01-16 21:50:34,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:50:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:50:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:50:34,689 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:50:34,690 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:50:34,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:50:34,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:50:34,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:50:34,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:50:34,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:50:34,691 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:50:34,691 INFO L174 Difference]: Start difference. First operand has 455 places, 436 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:50:34,700 INFO L199 Difference]: Finished difference. Result has 464 places, 439 transitions [2020-01-16 21:50:34,701 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=37853, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38812, PETRI_PLACES=464, PETRI_TRANSITIONS=439} [2020-01-16 21:50:34,701 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 464 places, 439 transitions [2020-01-16 21:50:34,701 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 464 places, 439 transitions [2020-01-16 21:50:37,395 INFO L129 PetriNetUnfolder]: 119/1035 cut-off events. [2020-01-16 21:50:37,395 INFO L130 PetriNetUnfolder]: For 900081/900215 co-relation queries the response was YES. [2020-01-16 21:50:37,433 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19252 conditions, 1035 events. 119/1035 cut-off events. For 900081/900215 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11609 event pairs. 2/1016 useless extension candidates. Maximal degree in co-relation 18468. Up to 127 conditions per place. [2020-01-16 21:50:37,443 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 464 places, 0 of 439 transitions, 120 of 38812 flow. [2020-01-16 21:50:37,443 INFO L478 AbstractCegarLoop]: Abstraction has has 463 places, 439 transitions [2020-01-16 21:50:37,443 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:50:39,251 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:50:39,251 INFO L130 PetriNetUnfolder]: For 900081/900215 co-relation queries the response was YES. [2020-01-16 21:50:39,251 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:50:39,251 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:50:39,251 INFO L426 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:50:39,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:50:39,252 INFO L82 PathProgramCache]: Analyzing trace with hash -934738367, now seen corresponding path program 53 times [2020-01-16 21:50:39,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:50:39,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45365322] [2020-01-16 21:50:39,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:50:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:50:39,403 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 21:50:39,403 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45365322] [2020-01-16 21:50:39,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:50:39,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:50:39,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431535798] [2020-01-16 21:50:39,404 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:50:39,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:50:39,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:50:39,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:50:39,405 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:50:39,405 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 439 transitions. Second operand 7 states. [2020-01-16 21:50:39,405 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:50:39,405 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:50:39,405 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:50:43,169 INFO L129 PetriNetUnfolder]: 119/1034 cut-off events. [2020-01-16 21:50:43,169 INFO L130 PetriNetUnfolder]: For 918872/919416 co-relation queries the response was YES. [2020-01-16 21:50:43,202 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19592 conditions, 1034 events. 119/1034 cut-off events. For 918872/919416 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11523 event pairs. 17/1040 useless extension candidates. Maximal degree in co-relation 18798. Up to 190 conditions per place. [2020-01-16 21:50:43,208 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 186 selfloop transitions, 251 changer transitions [2020-01-16 21:50:43,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:50:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:50:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:50:43,209 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:50:43,209 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:50:43,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:50:43,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:50:43,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:50:43,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:50:43,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:50:43,210 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:50:43,210 INFO L174 Difference]: Start difference. First operand has 463 places, 439 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:50:43,220 INFO L199 Difference]: Finished difference. Result has 471 places, 443 transitions [2020-01-16 21:50:43,220 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=38692, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=39623, PETRI_PLACES=471, PETRI_TRANSITIONS=443} [2020-01-16 21:50:43,221 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 471 places, 443 transitions [2020-01-16 21:50:43,221 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 471 places, 443 transitions [2020-01-16 21:50:45,953 INFO L129 PetriNetUnfolder]: 119/1034 cut-off events. [2020-01-16 21:50:45,953 INFO L130 PetriNetUnfolder]: For 931909/932043 co-relation queries the response was YES. [2020-01-16 21:50:45,992 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19472 conditions, 1034 events. 119/1034 cut-off events. For 931909/932043 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11598 event pairs. 2/1016 useless extension candidates. Maximal degree in co-relation 18678. Up to 127 conditions per place. [2020-01-16 21:50:46,002 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 471 places, 0 of 443 transitions, 120 of 39623 flow. [2020-01-16 21:50:46,002 INFO L478 AbstractCegarLoop]: Abstraction has has 470 places, 443 transitions [2020-01-16 21:50:46,002 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:50:47,893 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:50:47,893 INFO L130 PetriNetUnfolder]: For 931909/932043 co-relation queries the response was YES. [2020-01-16 21:50:47,893 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:50:47,893 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:50:47,893 INFO L426 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:50:47,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:50:47,893 INFO L82 PathProgramCache]: Analyzing trace with hash -445753791, now seen corresponding path program 54 times [2020-01-16 21:50:47,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:50:47,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701472203] [2020-01-16 21:50:47,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:50:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:50:48,048 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 21:50:48,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701472203] [2020-01-16 21:50:48,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:50:48,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:50:48,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840341465] [2020-01-16 21:50:48,049 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:50:48,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:50:48,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:50:48,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:50:48,050 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:50:48,050 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 443 transitions. Second operand 7 states. [2020-01-16 21:50:48,050 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:50:48,050 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:50:48,050 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:50:52,004 INFO L129 PetriNetUnfolder]: 119/1033 cut-off events. [2020-01-16 21:50:52,004 INFO L130 PetriNetUnfolder]: For 950974/951518 co-relation queries the response was YES. [2020-01-16 21:50:52,041 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19810 conditions, 1033 events. 119/1033 cut-off events. For 950974/951518 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11523 event pairs. 38/1060 useless extension candidates. Maximal degree in co-relation 19032. Up to 190 conditions per place. [2020-01-16 21:50:52,047 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 184 selfloop transitions, 256 changer transitions [2020-01-16 21:50:52,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:50:52,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:50:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:50:52,048 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:50:52,048 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:50:52,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:50:52,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:50:52,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:50:52,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:50:52,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:50:52,050 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:50:52,050 INFO L174 Difference]: Start difference. First operand has 470 places, 443 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:50:52,061 INFO L199 Difference]: Finished difference. Result has 477 places, 443 transitions [2020-01-16 21:50:52,062 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=39503, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40135, PETRI_PLACES=477, PETRI_TRANSITIONS=443} [2020-01-16 21:50:52,062 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 477 places, 443 transitions [2020-01-16 21:50:52,062 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 477 places, 443 transitions [2020-01-16 21:50:54,771 INFO L129 PetriNetUnfolder]: 119/1033 cut-off events. [2020-01-16 21:50:54,771 INFO L130 PetriNetUnfolder]: For 962662/962796 co-relation queries the response was YES. [2020-01-16 21:50:54,801 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19624 conditions, 1033 events. 119/1033 cut-off events. For 962662/962796 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11601 event pairs. 2/1020 useless extension candidates. Maximal degree in co-relation 18850. Up to 127 conditions per place. [2020-01-16 21:50:54,810 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 477 places, 0 of 443 transitions, 120 of 40135 flow. [2020-01-16 21:50:54,811 INFO L478 AbstractCegarLoop]: Abstraction has has 476 places, 443 transitions [2020-01-16 21:50:54,811 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:50:56,827 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:50:56,827 INFO L130 PetriNetUnfolder]: For 962662/962796 co-relation queries the response was YES. [2020-01-16 21:50:56,827 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:50:56,827 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:50:56,828 INFO L426 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:50:56,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:50:56,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1573468097, now seen corresponding path program 55 times [2020-01-16 21:50:56,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:50:56,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874903208] [2020-01-16 21:50:56,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:50:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:50:56,973 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 21:50:56,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874903208] [2020-01-16 21:50:56,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:50:56,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:50:56,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851376607] [2020-01-16 21:50:56,975 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:50:56,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:50:56,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:50:56,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:50:56,976 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:50:56,976 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 443 transitions. Second operand 7 states. [2020-01-16 21:50:56,976 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:50:56,976 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:50:56,976 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:51:01,164 INFO L129 PetriNetUnfolder]: 119/1032 cut-off events. [2020-01-16 21:51:01,164 INFO L130 PetriNetUnfolder]: For 981759/982290 co-relation queries the response was YES. [2020-01-16 21:51:01,202 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19960 conditions, 1032 events. 119/1032 cut-off events. For 981759/982290 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11499 event pairs. 4/1025 useless extension candidates. Maximal degree in co-relation 19177. Up to 192 conditions per place. [2020-01-16 21:51:01,208 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 178 selfloop transitions, 259 changer transitions [2020-01-16 21:51:01,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:51:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:51:01,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:51:01,209 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:51:01,210 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:51:01,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:51:01,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:51:01,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:51:01,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:51:01,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:51:01,211 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:51:01,211 INFO L174 Difference]: Start difference. First operand has 476 places, 443 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:51:01,220 INFO L199 Difference]: Finished difference. Result has 483 places, 443 transitions [2020-01-16 21:51:01,221 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=40015, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40653, PETRI_PLACES=483, PETRI_TRANSITIONS=443} [2020-01-16 21:51:01,221 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 483 places, 443 transitions [2020-01-16 21:51:01,221 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 483 places, 443 transitions [2020-01-16 21:51:04,222 INFO L129 PetriNetUnfolder]: 119/1032 cut-off events. [2020-01-16 21:51:04,223 INFO L130 PetriNetUnfolder]: For 994424/994558 co-relation queries the response was YES. [2020-01-16 21:51:04,258 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19774 conditions, 1032 events. 119/1032 cut-off events. For 994424/994558 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11589 event pairs. 2/1017 useless extension candidates. Maximal degree in co-relation 18994. Up to 127 conditions per place. [2020-01-16 21:51:04,268 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 483 places, 0 of 443 transitions, 120 of 40653 flow. [2020-01-16 21:51:04,268 INFO L478 AbstractCegarLoop]: Abstraction has has 482 places, 443 transitions [2020-01-16 21:51:04,268 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:51:06,310 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:51:06,310 INFO L130 PetriNetUnfolder]: For 994424/994558 co-relation queries the response was YES. [2020-01-16 21:51:06,310 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:51:06,310 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:51:06,311 INFO L426 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:51:06,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:51:06,311 INFO L82 PathProgramCache]: Analyzing trace with hash 820119001, now seen corresponding path program 56 times [2020-01-16 21:51:06,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:51:06,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109264614] [2020-01-16 21:51:06,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:51:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:51:06,461 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 21:51:06,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109264614] [2020-01-16 21:51:06,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:51:06,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:51:06,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45425830] [2020-01-16 21:51:06,462 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:51:06,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:51:06,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:51:06,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:51:06,463 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:51:06,463 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 443 transitions. Second operand 7 states. [2020-01-16 21:51:06,463 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:51:06,463 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:51:06,463 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:51:10,775 INFO L129 PetriNetUnfolder]: 119/1031 cut-off events. [2020-01-16 21:51:10,776 INFO L130 PetriNetUnfolder]: For 1013564/1014074 co-relation queries the response was YES. [2020-01-16 21:51:10,815 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20108 conditions, 1031 events. 119/1031 cut-off events. For 1013564/1014074 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11514 event pairs. 34/1054 useless extension candidates. Maximal degree in co-relation 19319. Up to 185 conditions per place. [2020-01-16 21:51:10,821 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 182 selfloop transitions, 256 changer transitions [2020-01-16 21:51:10,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:51:10,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:51:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:51:10,822 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:51:10,822 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:51:10,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:51:10,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:51:10,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:51:10,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:51:10,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:51:10,823 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:51:10,823 INFO L174 Difference]: Start difference. First operand has 482 places, 443 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:51:10,833 INFO L199 Difference]: Finished difference. Result has 490 places, 444 transitions [2020-01-16 21:51:10,834 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=40533, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=41375, PETRI_PLACES=490, PETRI_TRANSITIONS=444} [2020-01-16 21:51:10,834 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 490 places, 444 transitions [2020-01-16 21:51:10,834 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 490 places, 444 transitions [2020-01-16 21:51:13,485 INFO L129 PetriNetUnfolder]: 119/1031 cut-off events. [2020-01-16 21:51:13,485 INFO L130 PetriNetUnfolder]: For 1028480/1028616 co-relation queries the response was YES. [2020-01-16 21:51:13,524 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20034 conditions, 1031 events. 119/1031 cut-off events. For 1028480/1028616 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11565 event pairs. 2/1016 useless extension candidates. Maximal degree in co-relation 19244. Up to 127 conditions per place. [2020-01-16 21:51:13,533 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 490 places, 0 of 444 transitions, 120 of 41375 flow. [2020-01-16 21:51:13,534 INFO L478 AbstractCegarLoop]: Abstraction has has 489 places, 444 transitions [2020-01-16 21:51:13,534 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:51:15,659 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:51:15,659 INFO L130 PetriNetUnfolder]: For 1027732/1027820 co-relation queries the response was YES. [2020-01-16 21:51:15,659 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:51:15,659 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:51:15,659 INFO L426 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:51:15,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:51:15,660 INFO L82 PathProgramCache]: Analyzing trace with hash 910887237, now seen corresponding path program 57 times [2020-01-16 21:51:15,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:51:15,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259868891] [2020-01-16 21:51:15,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:51:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:51:15,811 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 21:51:15,812 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259868891] [2020-01-16 21:51:15,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:51:15,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:51:15,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867482302] [2020-01-16 21:51:15,812 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:51:15,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:51:15,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:51:15,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:51:15,813 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:51:15,813 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 444 transitions. Second operand 7 states. [2020-01-16 21:51:15,813 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:51:15,813 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:51:15,813 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:51:20,232 INFO L129 PetriNetUnfolder]: 119/1030 cut-off events. [2020-01-16 21:51:20,233 INFO L130 PetriNetUnfolder]: For 1047495/1047976 co-relation queries the response was YES. [2020-01-16 21:51:20,263 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20366 conditions, 1030 events. 119/1030 cut-off events. For 1047495/1047976 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11505 event pairs. 38/1056 useless extension candidates. Maximal degree in co-relation 19567. Up to 189 conditions per place. [2020-01-16 21:51:20,269 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 184 selfloop transitions, 254 changer transitions [2020-01-16 21:51:20,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:51:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:51:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:51:20,270 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:51:20,270 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:51:20,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:51:20,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:51:20,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:51:20,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:51:20,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:51:20,272 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:51:20,273 INFO L174 Difference]: Start difference. First operand has 489 places, 444 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:51:20,287 INFO L199 Difference]: Finished difference. Result has 496 places, 444 transitions [2020-01-16 21:51:20,288 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=41255, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=41883, PETRI_PLACES=496, PETRI_TRANSITIONS=444} [2020-01-16 21:51:20,288 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 496 places, 444 transitions [2020-01-16 21:51:20,288 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 496 places, 444 transitions [2020-01-16 21:51:23,195 INFO L129 PetriNetUnfolder]: 119/1030 cut-off events. [2020-01-16 21:51:23,195 INFO L130 PetriNetUnfolder]: For 1060095/1060183 co-relation queries the response was YES. [2020-01-16 21:51:23,236 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20180 conditions, 1030 events. 119/1030 cut-off events. For 1060095/1060183 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11577 event pairs. 3/1015 useless extension candidates. Maximal degree in co-relation 19383. Up to 127 conditions per place. [2020-01-16 21:51:23,245 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 496 places, 0 of 444 transitions, 120 of 41883 flow. [2020-01-16 21:51:23,246 INFO L478 AbstractCegarLoop]: Abstraction has has 495 places, 444 transitions [2020-01-16 21:51:23,246 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:51:25,178 INFO L129 PetriNetUnfolder]: 119/966 cut-off events. [2020-01-16 21:51:25,178 INFO L130 PetriNetUnfolder]: For 1060095/1060183 co-relation queries the response was YES. [2020-01-16 21:51:25,178 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:51:25,178 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:51:25,178 INFO L426 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:51:25,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:51:25,179 INFO L82 PathProgramCache]: Analyzing trace with hash -775107319, now seen corresponding path program 58 times [2020-01-16 21:51:25,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:51:25,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102655877] [2020-01-16 21:51:25,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:51:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:51:25,324 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 21:51:25,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102655877] [2020-01-16 21:51:25,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:51:25,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:51:25,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777671697] [2020-01-16 21:51:25,325 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:51:25,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:51:25,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:51:25,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:51:25,326 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:51:25,326 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 444 transitions. Second operand 7 states. [2020-01-16 21:51:25,326 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:51:25,327 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:51:25,327 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:51:29,884 INFO L129 PetriNetUnfolder]: 119/1029 cut-off events. [2020-01-16 21:51:29,885 INFO L130 PetriNetUnfolder]: For 1080377/1080863 co-relation queries the response was YES. [2020-01-16 21:51:29,922 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20510 conditions, 1029 events. 119/1029 cut-off events. For 1080377/1080863 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11467 event pairs. 4/1021 useless extension candidates. Maximal degree in co-relation 19704. Up to 192 conditions per place. [2020-01-16 21:51:29,929 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 180 selfloop transitions, 258 changer transitions [2020-01-16 21:51:29,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:51:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:51:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:51:29,930 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:51:29,930 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:51:29,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:51:29,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:51:29,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:51:29,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:51:29,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:51:29,931 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:51:29,931 INFO L174 Difference]: Start difference. First operand has 495 places, 444 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:51:29,942 INFO L199 Difference]: Finished difference. Result has 502 places, 444 transitions [2020-01-16 21:51:29,943 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=41763, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42399, PETRI_PLACES=502, PETRI_TRANSITIONS=444} [2020-01-16 21:51:29,943 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 502 places, 444 transitions [2020-01-16 21:51:29,943 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 502 places, 444 transitions [2020-01-16 21:51:32,882 INFO L129 PetriNetUnfolder]: 119/1029 cut-off events. [2020-01-16 21:51:32,882 INFO L130 PetriNetUnfolder]: For 1093267/1093355 co-relation queries the response was YES. [2020-01-16 21:51:32,914 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20324 conditions, 1029 events. 119/1029 cut-off events. For 1093267/1093355 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11541 event pairs. 3/1014 useless extension candidates. Maximal degree in co-relation 19524. Up to 127 conditions per place. [2020-01-16 21:51:32,923 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 502 places, 0 of 444 transitions, 120 of 42399 flow. [2020-01-16 21:51:32,923 INFO L478 AbstractCegarLoop]: Abstraction has has 501 places, 444 transitions [2020-01-16 21:51:32,923 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:51:35,083 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:51:35,083 INFO L130 PetriNetUnfolder]: For 1093267/1093355 co-relation queries the response was YES. [2020-01-16 21:51:35,083 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:51:35,084 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:51:35,084 INFO L426 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:51:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:51:35,084 INFO L82 PathProgramCache]: Analyzing trace with hash 41281425, now seen corresponding path program 59 times [2020-01-16 21:51:35,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:51:35,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115056848] [2020-01-16 21:51:35,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:51:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:51:35,241 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 21:51:35,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115056848] [2020-01-16 21:51:35,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:51:35,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:51:35,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309950490] [2020-01-16 21:51:35,242 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:51:35,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:51:35,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:51:35,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:51:35,243 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:51:35,243 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 444 transitions. Second operand 7 states. [2020-01-16 21:51:35,243 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:51:35,243 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:51:35,243 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:51:39,688 INFO L129 PetriNetUnfolder]: 119/1028 cut-off events. [2020-01-16 21:51:39,688 INFO L130 PetriNetUnfolder]: For 1113881/1114367 co-relation queries the response was YES. [2020-01-16 21:51:39,728 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20652 conditions, 1028 events. 119/1028 cut-off events. For 1113881/1114367 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11459 event pairs. 15/1031 useless extension candidates. Maximal degree in co-relation 19843. Up to 188 conditions per place. [2020-01-16 21:51:39,734 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 251 changer transitions [2020-01-16 21:51:39,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:51:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:51:39,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:51:39,735 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:51:39,735 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:51:39,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:51:39,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:51:39,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:51:39,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:51:39,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:51:39,736 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:51:39,737 INFO L174 Difference]: Start difference. First operand has 501 places, 444 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:51:39,747 INFO L199 Difference]: Finished difference. Result has 508 places, 444 transitions [2020-01-16 21:51:39,747 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=42279, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42901, PETRI_PLACES=508, PETRI_TRANSITIONS=444} [2020-01-16 21:51:39,747 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 508 places, 444 transitions [2020-01-16 21:51:39,747 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 508 places, 444 transitions [2020-01-16 21:51:42,175 INFO L129 PetriNetUnfolder]: 119/1028 cut-off events. [2020-01-16 21:51:42,175 INFO L130 PetriNetUnfolder]: For 1126229/1126313 co-relation queries the response was YES. [2020-01-16 21:51:42,210 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20466 conditions, 1028 events. 119/1028 cut-off events. For 1126229/1126313 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11495 event pairs. 2/1011 useless extension candidates. Maximal degree in co-relation 19658. Up to 127 conditions per place. [2020-01-16 21:51:42,220 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 508 places, 0 of 444 transitions, 120 of 42901 flow. [2020-01-16 21:51:42,220 INFO L478 AbstractCegarLoop]: Abstraction has has 507 places, 444 transitions [2020-01-16 21:51:42,220 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:51:44,426 INFO L129 PetriNetUnfolder]: 119/966 cut-off events. [2020-01-16 21:51:44,427 INFO L130 PetriNetUnfolder]: For 1126229/1126313 co-relation queries the response was YES. [2020-01-16 21:51:44,427 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:51:44,427 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:51:44,427 INFO L426 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:51:44,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:51:44,427 INFO L82 PathProgramCache]: Analyzing trace with hash -805700185, now seen corresponding path program 60 times [2020-01-16 21:51:44,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:51:44,428 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720685762] [2020-01-16 21:51:44,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:51:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:51:44,606 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 21:51:44,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720685762] [2020-01-16 21:51:44,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:51:44,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:51:44,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601510875] [2020-01-16 21:51:44,607 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:51:44,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:51:44,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:51:44,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:51:44,608 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:51:44,608 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 444 transitions. Second operand 7 states. [2020-01-16 21:51:44,609 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:51:44,609 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:51:44,609 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:51:49,194 INFO L129 PetriNetUnfolder]: 119/1027 cut-off events. [2020-01-16 21:51:49,195 INFO L130 PetriNetUnfolder]: For 1150415/1151336 co-relation queries the response was YES. [2020-01-16 21:51:49,228 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20792 conditions, 1027 events. 119/1027 cut-off events. For 1150415/1151336 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11446 event pairs. 31/1046 useless extension candidates. Maximal degree in co-relation 19975. Up to 188 conditions per place. [2020-01-16 21:51:49,234 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 251 changer transitions [2020-01-16 21:51:49,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:51:49,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:51:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:51:49,235 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:51:49,235 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:51:49,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:51:49,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:51:49,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:51:49,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:51:49,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:51:49,237 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:51:49,237 INFO L174 Difference]: Start difference. First operand has 507 places, 444 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:51:49,247 INFO L199 Difference]: Finished difference. Result has 514 places, 444 transitions [2020-01-16 21:51:49,248 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=42781, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43403, PETRI_PLACES=514, PETRI_TRANSITIONS=444} [2020-01-16 21:51:49,248 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 514 places, 444 transitions [2020-01-16 21:51:49,248 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 514 places, 444 transitions [2020-01-16 21:51:52,162 INFO L129 PetriNetUnfolder]: 119/1027 cut-off events. [2020-01-16 21:51:52,162 INFO L130 PetriNetUnfolder]: For 1159768/1159852 co-relation queries the response was YES. [2020-01-16 21:51:52,203 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20606 conditions, 1027 events. 119/1027 cut-off events. For 1159768/1159852 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11460 event pairs. 2/1009 useless extension candidates. Maximal degree in co-relation 19790. Up to 127 conditions per place. [2020-01-16 21:51:52,213 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 514 places, 0 of 444 transitions, 120 of 43403 flow. [2020-01-16 21:51:52,214 INFO L478 AbstractCegarLoop]: Abstraction has has 513 places, 444 transitions [2020-01-16 21:51:52,214 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:51:54,282 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:51:54,283 INFO L130 PetriNetUnfolder]: For 1159768/1159852 co-relation queries the response was YES. [2020-01-16 21:51:54,283 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:51:54,283 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:51:54,283 INFO L426 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:51:54,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:51:54,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1045371301, now seen corresponding path program 61 times [2020-01-16 21:51:54,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:51:54,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132702015] [2020-01-16 21:51:54,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:51:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:51:54,435 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 21:51:54,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132702015] [2020-01-16 21:51:54,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:51:54,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:51:54,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514836172] [2020-01-16 21:51:54,436 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:51:54,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:51:54,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:51:54,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:51:54,437 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:51:54,437 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 444 transitions. Second operand 7 states. [2020-01-16 21:51:54,437 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:51:54,437 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:51:54,437 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:51:59,205 INFO L129 PetriNetUnfolder]: 119/1026 cut-off events. [2020-01-16 21:51:59,205 INFO L130 PetriNetUnfolder]: For 1180793/1181257 co-relation queries the response was YES. [2020-01-16 21:51:59,243 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20930 conditions, 1026 events. 119/1026 cut-off events. For 1180793/1181257 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11405 event pairs. 22/1036 useless extension candidates. Maximal degree in co-relation 20105. Up to 189 conditions per place. [2020-01-16 21:51:59,249 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 189 selfloop transitions, 253 changer transitions [2020-01-16 21:51:59,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:51:59,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:51:59,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:51:59,250 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:51:59,250 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:51:59,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:51:59,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:51:59,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:51:59,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:51:59,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:51:59,251 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:51:59,251 INFO L174 Difference]: Start difference. First operand has 513 places, 444 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:51:59,268 INFO L199 Difference]: Finished difference. Result has 521 places, 448 transitions [2020-01-16 21:51:59,269 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=43283, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=44269, PETRI_PLACES=521, PETRI_TRANSITIONS=448} [2020-01-16 21:51:59,269 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 521 places, 448 transitions [2020-01-16 21:51:59,269 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 521 places, 448 transitions [2020-01-16 21:52:02,309 INFO L129 PetriNetUnfolder]: 119/1026 cut-off events. [2020-01-16 21:52:02,309 INFO L130 PetriNetUnfolder]: For 1195670/1195754 co-relation queries the response was YES. [2020-01-16 21:52:02,342 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20808 conditions, 1026 events. 119/1026 cut-off events. For 1195670/1195754 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11466 event pairs. 2/1008 useless extension candidates. Maximal degree in co-relation 19977. Up to 127 conditions per place. [2020-01-16 21:52:02,352 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 521 places, 0 of 448 transitions, 120 of 44269 flow. [2020-01-16 21:52:02,352 INFO L478 AbstractCegarLoop]: Abstraction has has 520 places, 448 transitions [2020-01-16 21:52:02,352 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:52:04,601 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:52:04,602 INFO L130 PetriNetUnfolder]: For 1195875/1195961 co-relation queries the response was YES. [2020-01-16 21:52:04,602 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:52:04,602 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:52:04,602 INFO L426 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:52:04,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:52:04,602 INFO L82 PathProgramCache]: Analyzing trace with hash 457512897, now seen corresponding path program 62 times [2020-01-16 21:52:04,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:52:04,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262738724] [2020-01-16 21:52:04,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:52:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:52:04,745 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 21:52:04,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262738724] [2020-01-16 21:52:04,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:52:04,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:52:04,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921775289] [2020-01-16 21:52:04,746 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:52:04,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:52:04,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:52:04,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:52:04,747 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:52:04,747 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 448 transitions. Second operand 7 states. [2020-01-16 21:52:04,748 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:52:04,748 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:52:04,748 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:52:09,385 INFO L129 PetriNetUnfolder]: 119/1025 cut-off events. [2020-01-16 21:52:09,386 INFO L130 PetriNetUnfolder]: For 1216943/1217407 co-relation queries the response was YES. [2020-01-16 21:52:09,427 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21130 conditions, 1025 events. 119/1025 cut-off events. For 1216943/1217407 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11399 event pairs. 13/1026 useless extension candidates. Maximal degree in co-relation 20290. Up to 185 conditions per place. [2020-01-16 21:52:09,434 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 255 changer transitions [2020-01-16 21:52:09,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:52:09,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:52:09,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:52:09,435 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:52:09,435 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:52:09,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:52:09,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:52:09,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:52:09,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:52:09,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:52:09,436 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:52:09,436 INFO L174 Difference]: Start difference. First operand has 520 places, 448 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:52:09,447 INFO L199 Difference]: Finished difference. Result has 527 places, 448 transitions [2020-01-16 21:52:09,447 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=44149, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=44779, PETRI_PLACES=527, PETRI_TRANSITIONS=448} [2020-01-16 21:52:09,447 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 527 places, 448 transitions [2020-01-16 21:52:09,447 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 527 places, 448 transitions [2020-01-16 21:52:12,088 INFO L129 PetriNetUnfolder]: 119/1025 cut-off events. [2020-01-16 21:52:12,089 INFO L130 PetriNetUnfolder]: For 1230503/1230589 co-relation queries the response was YES. [2020-01-16 21:52:12,127 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20944 conditions, 1025 events. 119/1025 cut-off events. For 1230503/1230589 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11496 event pairs. 2/1007 useless extension candidates. Maximal degree in co-relation 20103. Up to 127 conditions per place. [2020-01-16 21:52:12,137 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 527 places, 0 of 448 transitions, 120 of 44779 flow. [2020-01-16 21:52:12,137 INFO L478 AbstractCegarLoop]: Abstraction has has 526 places, 448 transitions [2020-01-16 21:52:12,137 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:52:14,452 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:52:14,453 INFO L130 PetriNetUnfolder]: For 1230503/1230589 co-relation queries the response was YES. [2020-01-16 21:52:14,453 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:52:14,453 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:52:14,453 INFO L426 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:52:14,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:52:14,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1343316501, now seen corresponding path program 63 times [2020-01-16 21:52:14,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:52:14,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988758385] [2020-01-16 21:52:14,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:52:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:52:14,600 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 21:52:14,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988758385] [2020-01-16 21:52:14,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:52:14,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:52:14,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290299280] [2020-01-16 21:52:14,601 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:52:14,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:52:14,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:52:14,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:52:14,602 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:52:14,603 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 448 transitions. Second operand 7 states. [2020-01-16 21:52:14,603 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:52:14,603 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:52:14,603 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:52:19,477 INFO L129 PetriNetUnfolder]: 119/1024 cut-off events. [2020-01-16 21:52:19,477 INFO L130 PetriNetUnfolder]: For 1251813/1252277 co-relation queries the response was YES. [2020-01-16 21:52:19,510 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21264 conditions, 1024 events. 119/1024 cut-off events. For 1251813/1252277 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11385 event pairs. 22/1034 useless extension candidates. Maximal degree in co-relation 20414. Up to 177 conditions per place. [2020-01-16 21:52:19,516 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 255 changer transitions [2020-01-16 21:52:19,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:52:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:52:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:52:19,517 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:52:19,517 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:52:19,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:52:19,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:52:19,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:52:19,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:52:19,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:52:19,519 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:52:19,519 INFO L174 Difference]: Start difference. First operand has 526 places, 448 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:52:19,530 INFO L199 Difference]: Finished difference. Result has 533 places, 448 transitions [2020-01-16 21:52:19,531 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=44659, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=45289, PETRI_PLACES=533, PETRI_TRANSITIONS=448} [2020-01-16 21:52:19,531 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 533 places, 448 transitions [2020-01-16 21:52:19,531 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 533 places, 448 transitions [2020-01-16 21:52:22,603 INFO L129 PetriNetUnfolder]: 119/1024 cut-off events. [2020-01-16 21:52:22,603 INFO L130 PetriNetUnfolder]: For 1265753/1265843 co-relation queries the response was YES. [2020-01-16 21:52:22,646 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21078 conditions, 1024 events. 119/1024 cut-off events. For 1265753/1265843 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11461 event pairs. 2/1003 useless extension candidates. Maximal degree in co-relation 20227. Up to 127 conditions per place. [2020-01-16 21:52:22,657 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 533 places, 0 of 448 transitions, 120 of 45289 flow. [2020-01-16 21:52:22,657 INFO L478 AbstractCegarLoop]: Abstraction has has 532 places, 448 transitions [2020-01-16 21:52:22,657 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:52:24,894 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:52:24,894 INFO L130 PetriNetUnfolder]: For 1266274/1266403 co-relation queries the response was YES. [2020-01-16 21:52:24,894 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:52:24,894 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:52:24,894 INFO L426 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:52:24,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:52:24,895 INFO L82 PathProgramCache]: Analyzing trace with hash -984580015, now seen corresponding path program 64 times [2020-01-16 21:52:24,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:52:24,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467809279] [2020-01-16 21:52:24,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:52:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:52:25,072 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 21:52:25,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467809279] [2020-01-16 21:52:25,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:52:25,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:52:25,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503657963] [2020-01-16 21:52:25,073 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:52:25,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:52:25,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:52:25,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:52:25,074 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:52:25,074 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 448 transitions. Second operand 7 states. [2020-01-16 21:52:25,074 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:52:25,074 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:52:25,074 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:52:29,621 INFO L129 PetriNetUnfolder]: 119/1023 cut-off events. [2020-01-16 21:52:29,621 INFO L130 PetriNetUnfolder]: For 1287046/1287510 co-relation queries the response was YES. [2020-01-16 21:52:29,661 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21396 conditions, 1023 events. 119/1023 cut-off events. For 1287046/1287510 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11384 event pairs. 3/1013 useless extension candidates. Maximal degree in co-relation 20536. Up to 188 conditions per place. [2020-01-16 21:52:29,668 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 183 selfloop transitions, 259 changer transitions [2020-01-16 21:52:29,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:52:29,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:52:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:52:29,669 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:52:29,669 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:52:29,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:52:29,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:52:29,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:52:29,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:52:29,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:52:29,670 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:52:29,670 INFO L174 Difference]: Start difference. First operand has 532 places, 448 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:52:29,681 INFO L199 Difference]: Finished difference. Result has 539 places, 448 transitions [2020-01-16 21:52:29,682 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=45169, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=45807, PETRI_PLACES=539, PETRI_TRANSITIONS=448} [2020-01-16 21:52:29,682 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 539 places, 448 transitions [2020-01-16 21:52:29,682 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 539 places, 448 transitions [2020-01-16 21:52:33,017 INFO L129 PetriNetUnfolder]: 119/1023 cut-off events. [2020-01-16 21:52:33,017 INFO L130 PetriNetUnfolder]: For 1302246/1302375 co-relation queries the response was YES. [2020-01-16 21:52:33,054 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21210 conditions, 1023 events. 119/1023 cut-off events. For 1302246/1302375 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11467 event pairs. 2/1002 useless extension candidates. Maximal degree in co-relation 20354. Up to 127 conditions per place. [2020-01-16 21:52:33,064 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 539 places, 0 of 448 transitions, 120 of 45807 flow. [2020-01-16 21:52:33,064 INFO L478 AbstractCegarLoop]: Abstraction has has 538 places, 448 transitions [2020-01-16 21:52:33,064 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:52:35,410 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:52:35,410 INFO L130 PetriNetUnfolder]: For 1302246/1302375 co-relation queries the response was YES. [2020-01-16 21:52:35,410 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:52:35,411 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:52:35,411 INFO L426 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:52:35,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:52:35,411 INFO L82 PathProgramCache]: Analyzing trace with hash -135448025, now seen corresponding path program 65 times [2020-01-16 21:52:35,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:52:35,411 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505946696] [2020-01-16 21:52:35,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:52:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:52:35,650 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 21:52:35,651 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505946696] [2020-01-16 21:52:35,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:52:35,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:52:35,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348516858] [2020-01-16 21:52:35,652 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:52:35,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:52:35,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:52:35,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:52:35,653 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:52:35,653 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 448 transitions. Second operand 7 states. [2020-01-16 21:52:35,654 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:52:35,654 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:52:35,654 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:52:40,662 INFO L129 PetriNetUnfolder]: 119/1022 cut-off events. [2020-01-16 21:52:40,662 INFO L130 PetriNetUnfolder]: For 1323338/1323802 co-relation queries the response was YES. [2020-01-16 21:52:40,697 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21526 conditions, 1022 events. 119/1022 cut-off events. For 1323338/1323802 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11391 event pairs. 13/1022 useless extension candidates. Maximal degree in co-relation 20661. Up to 180 conditions per place. [2020-01-16 21:52:40,704 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 186 selfloop transitions, 258 changer transitions [2020-01-16 21:52:40,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:52:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:52:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:52:40,705 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:52:40,705 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:52:40,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:52:40,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:52:40,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:52:40,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:52:40,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:52:40,706 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:52:40,706 INFO L174 Difference]: Start difference. First operand has 538 places, 448 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:52:40,717 INFO L199 Difference]: Finished difference. Result has 546 places, 450 transitions [2020-01-16 21:52:40,718 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=45687, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=46568, PETRI_PLACES=546, PETRI_TRANSITIONS=450} [2020-01-16 21:52:40,718 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 546 places, 450 transitions [2020-01-16 21:52:40,718 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 546 places, 450 transitions [2020-01-16 21:52:43,821 INFO L129 PetriNetUnfolder]: 119/1022 cut-off events. [2020-01-16 21:52:43,821 INFO L130 PetriNetUnfolder]: For 1339978/1340107 co-relation queries the response was YES. [2020-01-16 21:52:43,865 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21402 conditions, 1022 events. 119/1022 cut-off events. For 1339978/1340107 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11434 event pairs. 2/1001 useless extension candidates. Maximal degree in co-relation 20532. Up to 127 conditions per place. [2020-01-16 21:52:43,875 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 546 places, 0 of 450 transitions, 120 of 46568 flow. [2020-01-16 21:52:43,876 INFO L478 AbstractCegarLoop]: Abstraction has has 545 places, 450 transitions [2020-01-16 21:52:43,876 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:52:46,049 INFO L129 PetriNetUnfolder]: 119/966 cut-off events. [2020-01-16 21:52:46,049 INFO L130 PetriNetUnfolder]: For 1339978/1340107 co-relation queries the response was YES. [2020-01-16 21:52:46,049 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:52:46,049 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:52:46,049 INFO L426 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:52:46,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:52:46,050 INFO L82 PathProgramCache]: Analyzing trace with hash -92720639, now seen corresponding path program 66 times [2020-01-16 21:52:46,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:52:46,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791547860] [2020-01-16 21:52:46,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:52:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:52:46,245 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 21:52:46,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791547860] [2020-01-16 21:52:46,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:52:46,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:52:46,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704553482] [2020-01-16 21:52:46,247 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:52:46,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:52:46,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:52:46,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:52:46,248 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:52:46,248 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 450 transitions. Second operand 7 states. [2020-01-16 21:52:46,248 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:52:46,249 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:52:46,249 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:52:51,175 INFO L129 PetriNetUnfolder]: 119/1021 cut-off events. [2020-01-16 21:52:51,176 INFO L130 PetriNetUnfolder]: For 1361302/1361766 co-relation queries the response was YES. [2020-01-16 21:52:51,216 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21716 conditions, 1021 events. 119/1021 cut-off events. For 1361302/1361766 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11366 event pairs. 28/1036 useless extension candidates. Maximal degree in co-relation 20837. Up to 185 conditions per place. [2020-01-16 21:52:51,223 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 185 selfloop transitions, 259 changer transitions [2020-01-16 21:52:51,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:52:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:52:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:52:51,224 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:52:51,224 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:52:51,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:52:51,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:52:51,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:52:51,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:52:51,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:52:51,227 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:52:51,227 INFO L174 Difference]: Start difference. First operand has 545 places, 450 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:52:51,244 INFO L199 Difference]: Finished difference. Result has 552 places, 450 transitions [2020-01-16 21:52:51,244 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=46448, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=47086, PETRI_PLACES=552, PETRI_TRANSITIONS=450} [2020-01-16 21:52:51,245 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 552 places, 450 transitions [2020-01-16 21:52:51,245 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 552 places, 450 transitions [2020-01-16 21:52:54,089 INFO L129 PetriNetUnfolder]: 119/1021 cut-off events. [2020-01-16 21:52:54,089 INFO L130 PetriNetUnfolder]: For 1376339/1376468 co-relation queries the response was YES. [2020-01-16 21:52:54,128 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21530 conditions, 1021 events. 119/1021 cut-off events. For 1376339/1376468 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11422 event pairs. 2/1003 useless extension candidates. Maximal degree in co-relation 20654. Up to 127 conditions per place. [2020-01-16 21:52:54,139 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 552 places, 0 of 450 transitions, 120 of 47086 flow. [2020-01-16 21:52:54,140 INFO L478 AbstractCegarLoop]: Abstraction has has 551 places, 450 transitions [2020-01-16 21:52:54,140 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:52:56,550 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:52:56,550 INFO L130 PetriNetUnfolder]: For 1376339/1376468 co-relation queries the response was YES. [2020-01-16 21:52:56,550 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:52:56,550 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:52:56,550 INFO L426 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:52:56,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:52:56,551 INFO L82 PathProgramCache]: Analyzing trace with hash -863794843, now seen corresponding path program 67 times [2020-01-16 21:52:56,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:52:56,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19807866] [2020-01-16 21:52:56,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:52:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:52:56,704 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 21:52:56,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19807866] [2020-01-16 21:52:56,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:52:56,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:52:56,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973056934] [2020-01-16 21:52:56,705 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:52:56,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:52:56,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:52:56,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:52:56,706 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:52:56,707 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 450 transitions. Second operand 7 states. [2020-01-16 21:52:56,707 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:52:56,707 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:52:56,707 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:53:02,373 INFO L129 PetriNetUnfolder]: 119/1020 cut-off events. [2020-01-16 21:53:02,373 INFO L130 PetriNetUnfolder]: For 1398426/1398924 co-relation queries the response was YES. [2020-01-16 21:53:02,410 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21842 conditions, 1020 events. 119/1020 cut-off events. For 1398426/1398924 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11361 event pairs. 35/1042 useless extension candidates. Maximal degree in co-relation 20957. Up to 181 conditions per place. [2020-01-16 21:53:02,417 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 257 changer transitions [2020-01-16 21:53:02,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:53:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:53:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:53:02,419 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:53:02,419 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:53:02,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:53:02,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:53:02,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:53:02,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:53:02,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:53:02,420 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:53:02,420 INFO L174 Difference]: Start difference. First operand has 551 places, 450 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:53:02,432 INFO L199 Difference]: Finished difference. Result has 558 places, 450 transitions [2020-01-16 21:53:02,433 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=46966, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=47600, PETRI_PLACES=558, PETRI_TRANSITIONS=450} [2020-01-16 21:53:02,433 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 558 places, 450 transitions [2020-01-16 21:53:02,433 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 558 places, 450 transitions [2020-01-16 21:53:05,565 INFO L129 PetriNetUnfolder]: 119/1020 cut-off events. [2020-01-16 21:53:05,565 INFO L130 PetriNetUnfolder]: For 1413201/1413330 co-relation queries the response was YES. [2020-01-16 21:53:05,609 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21656 conditions, 1020 events. 119/1020 cut-off events. For 1413201/1413330 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11393 event pairs. 2/999 useless extension candidates. Maximal degree in co-relation 20775. Up to 127 conditions per place. [2020-01-16 21:53:05,620 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 558 places, 0 of 450 transitions, 120 of 47600 flow. [2020-01-16 21:53:05,620 INFO L478 AbstractCegarLoop]: Abstraction has has 557 places, 450 transitions [2020-01-16 21:53:05,620 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:53:07,870 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:53:07,870 INFO L130 PetriNetUnfolder]: For 1413708/1413888 co-relation queries the response was YES. [2020-01-16 21:53:07,870 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:53:07,870 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:53:07,870 INFO L426 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:53:07,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:53:07,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1229006585, now seen corresponding path program 68 times [2020-01-16 21:53:07,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:53:07,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451073680] [2020-01-16 21:53:07,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:53:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:53:08,023 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 21:53:08,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451073680] [2020-01-16 21:53:08,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:53:08,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:53:08,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852691556] [2020-01-16 21:53:08,024 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:53:08,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:53:08,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:53:08,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:53:08,024 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:53:08,025 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 450 transitions. Second operand 7 states. [2020-01-16 21:53:08,025 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:53:08,025 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:53:08,025 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:53:12,724 INFO L129 PetriNetUnfolder]: 119/1019 cut-off events. [2020-01-16 21:53:12,725 INFO L130 PetriNetUnfolder]: For 1434958/1435422 co-relation queries the response was YES. [2020-01-16 21:53:12,766 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21966 conditions, 1019 events. 119/1019 cut-off events. For 1434958/1435422 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11342 event pairs. 13/1019 useless extension candidates. Maximal degree in co-relation 21076. Up to 185 conditions per place. [2020-01-16 21:53:12,773 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 257 changer transitions [2020-01-16 21:53:12,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:53:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:53:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:53:12,774 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:53:12,774 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:53:12,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:53:12,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:53:12,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:53:12,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:53:12,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:53:12,775 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:53:12,775 INFO L174 Difference]: Start difference. First operand has 557 places, 450 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:53:12,786 INFO L199 Difference]: Finished difference. Result has 564 places, 450 transitions [2020-01-16 21:53:12,787 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=47480, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=48114, PETRI_PLACES=564, PETRI_TRANSITIONS=450} [2020-01-16 21:53:12,787 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 564 places, 450 transitions [2020-01-16 21:53:12,787 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 564 places, 450 transitions [2020-01-16 21:53:15,553 INFO L129 PetriNetUnfolder]: 119/1019 cut-off events. [2020-01-16 21:53:15,553 INFO L130 PetriNetUnfolder]: For 1450810/1450990 co-relation queries the response was YES. [2020-01-16 21:53:15,596 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21780 conditions, 1019 events. 119/1019 cut-off events. For 1450810/1450990 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11369 event pairs. 2/999 useless extension candidates. Maximal degree in co-relation 20889. Up to 127 conditions per place. [2020-01-16 21:53:15,608 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 564 places, 0 of 450 transitions, 120 of 48114 flow. [2020-01-16 21:53:15,608 INFO L478 AbstractCegarLoop]: Abstraction has has 563 places, 450 transitions [2020-01-16 21:53:15,608 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:53:18,130 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:53:18,131 INFO L130 PetriNetUnfolder]: For 1450810/1450990 co-relation queries the response was YES. [2020-01-16 21:53:18,131 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:53:18,131 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:53:18,131 INFO L426 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:53:18,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:53:18,131 INFO L82 PathProgramCache]: Analyzing trace with hash 391115021, now seen corresponding path program 69 times [2020-01-16 21:53:18,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:53:18,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613628035] [2020-01-16 21:53:18,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:53:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:53:18,295 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 21:53:18,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613628035] [2020-01-16 21:53:18,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:53:18,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:53:18,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678902080] [2020-01-16 21:53:18,296 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:53:18,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:53:18,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:53:18,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:53:18,297 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:53:18,297 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 450 transitions. Second operand 7 states. [2020-01-16 21:53:18,297 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:53:18,297 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:53:18,297 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:53:23,393 INFO L129 PetriNetUnfolder]: 119/1018 cut-off events. [2020-01-16 21:53:23,393 INFO L130 PetriNetUnfolder]: For 1472294/1472758 co-relation queries the response was YES. [2020-01-16 21:53:23,430 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22088 conditions, 1018 events. 119/1018 cut-off events. For 1472294/1472758 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11319 event pairs. 13/1018 useless extension candidates. Maximal degree in co-relation 21188. Up to 177 conditions per place. [2020-01-16 21:53:23,436 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 257 changer transitions [2020-01-16 21:53:23,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:53:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:53:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:53:23,438 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:53:23,438 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:53:23,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:53:23,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:53:23,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:53:23,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:53:23,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:53:23,439 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:53:23,439 INFO L174 Difference]: Start difference. First operand has 563 places, 450 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:53:23,450 INFO L199 Difference]: Finished difference. Result has 570 places, 450 transitions [2020-01-16 21:53:23,451 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=47994, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=48628, PETRI_PLACES=570, PETRI_TRANSITIONS=450} [2020-01-16 21:53:23,451 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 570 places, 450 transitions [2020-01-16 21:53:23,451 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 570 places, 450 transitions [2020-01-16 21:53:26,693 INFO L129 PetriNetUnfolder]: 119/1018 cut-off events. [2020-01-16 21:53:26,693 INFO L130 PetriNetUnfolder]: For 1488446/1488628 co-relation queries the response was YES. [2020-01-16 21:53:26,739 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21902 conditions, 1018 events. 119/1018 cut-off events. For 1488446/1488628 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11386 event pairs. 2/1000 useless extension candidates. Maximal degree in co-relation 21003. Up to 127 conditions per place. [2020-01-16 21:53:26,750 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 570 places, 0 of 450 transitions, 120 of 48628 flow. [2020-01-16 21:53:26,750 INFO L478 AbstractCegarLoop]: Abstraction has has 569 places, 450 transitions [2020-01-16 21:53:26,750 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:53:29,190 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:53:29,190 INFO L130 PetriNetUnfolder]: For 1488446/1488628 co-relation queries the response was YES. [2020-01-16 21:53:29,190 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:53:29,190 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:53:29,190 INFO L426 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:53:29,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:53:29,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1247442761, now seen corresponding path program 70 times [2020-01-16 21:53:29,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:53:29,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354020204] [2020-01-16 21:53:29,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:53:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:53:29,322 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 21:53:29,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354020204] [2020-01-16 21:53:29,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:53:29,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:53:29,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828714989] [2020-01-16 21:53:29,324 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:53:29,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:53:29,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:53:29,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:53:29,324 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:53:29,324 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 450 transitions. Second operand 7 states. [2020-01-16 21:53:29,324 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:53:29,325 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:53:29,325 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:53:34,228 INFO L129 PetriNetUnfolder]: 119/1017 cut-off events. [2020-01-16 21:53:34,228 INFO L130 PetriNetUnfolder]: For 1509792/1510133 co-relation queries the response was YES. [2020-01-16 21:53:34,271 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22208 conditions, 1017 events. 119/1017 cut-off events. For 1509792/1510133 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11322 event pairs. 25/1029 useless extension candidates. Maximal degree in co-relation 21300. Up to 179 conditions per place. [2020-01-16 21:53:34,278 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 255 changer transitions [2020-01-16 21:53:34,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:53:34,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:53:34,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:53:34,279 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:53:34,279 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:53:34,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:53:34,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:53:34,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:53:34,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:53:34,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:53:34,280 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:53:34,281 INFO L174 Difference]: Start difference. First operand has 569 places, 450 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:53:34,292 INFO L199 Difference]: Finished difference. Result has 577 places, 452 transitions [2020-01-16 21:53:34,293 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=48508, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=49390, PETRI_PLACES=577, PETRI_TRANSITIONS=452} [2020-01-16 21:53:34,293 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 577 places, 452 transitions [2020-01-16 21:53:34,293 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 577 places, 452 transitions [2020-01-16 21:53:37,236 INFO L129 PetriNetUnfolder]: 119/1017 cut-off events. [2020-01-16 21:53:37,237 INFO L130 PetriNetUnfolder]: For 1528413/1528595 co-relation queries the response was YES. [2020-01-16 21:53:37,279 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22084 conditions, 1017 events. 119/1017 cut-off events. For 1528413/1528595 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11386 event pairs. 2/999 useless extension candidates. Maximal degree in co-relation 21181. Up to 127 conditions per place. [2020-01-16 21:53:37,290 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 577 places, 0 of 452 transitions, 120 of 49390 flow. [2020-01-16 21:53:37,290 INFO L478 AbstractCegarLoop]: Abstraction has has 576 places, 452 transitions [2020-01-16 21:53:37,290 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:53:39,847 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:53:39,848 INFO L130 PetriNetUnfolder]: For 1527801/1527934 co-relation queries the response was YES. [2020-01-16 21:53:39,848 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:53:39,848 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:53:39,848 INFO L426 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:53:39,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:53:39,848 INFO L82 PathProgramCache]: Analyzing trace with hash 787235449, now seen corresponding path program 71 times [2020-01-16 21:53:39,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:53:39,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308540055] [2020-01-16 21:53:39,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:53:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:53:39,993 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 21:53:39,994 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308540055] [2020-01-16 21:53:39,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:53:39,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:53:39,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239958805] [2020-01-16 21:53:39,995 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:53:39,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:53:39,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:53:39,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:53:39,995 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:53:39,995 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 452 transitions. Second operand 7 states. [2020-01-16 21:53:39,995 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:53:39,996 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:53:39,996 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:53:45,398 INFO L129 PetriNetUnfolder]: 119/1016 cut-off events. [2020-01-16 21:53:45,398 INFO L130 PetriNetUnfolder]: For 1550257/1550603 co-relation queries the response was YES. [2020-01-16 21:53:45,436 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22388 conditions, 1016 events. 119/1016 cut-off events. For 1550257/1550603 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11279 event pairs. 19/1022 useless extension candidates. Maximal degree in co-relation 21476. Up to 175 conditions per place. [2020-01-16 21:53:45,443 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 255 changer transitions [2020-01-16 21:53:45,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:53:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:53:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:53:45,444 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:53:45,444 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:53:45,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:53:45,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:53:45,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:53:45,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:53:45,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:53:45,445 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:53:45,445 INFO L174 Difference]: Start difference. First operand has 576 places, 452 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:53:45,456 INFO L199 Difference]: Finished difference. Result has 583 places, 452 transitions [2020-01-16 21:53:45,457 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=49270, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=49900, PETRI_PLACES=583, PETRI_TRANSITIONS=452} [2020-01-16 21:53:45,457 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 583 places, 452 transitions [2020-01-16 21:53:45,457 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 583 places, 452 transitions [2020-01-16 21:53:48,710 INFO L129 PetriNetUnfolder]: 119/1016 cut-off events. [2020-01-16 21:53:48,710 INFO L130 PetriNetUnfolder]: For 1566244/1566378 co-relation queries the response was YES. [2020-01-16 21:53:48,746 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22202 conditions, 1016 events. 119/1016 cut-off events. For 1566244/1566378 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11347 event pairs. 2/996 useless extension candidates. Maximal degree in co-relation 21291. Up to 127 conditions per place. [2020-01-16 21:53:48,757 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 583 places, 0 of 452 transitions, 120 of 49900 flow. [2020-01-16 21:53:48,757 INFO L478 AbstractCegarLoop]: Abstraction has has 582 places, 452 transitions [2020-01-16 21:53:48,757 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:53:51,361 INFO L129 PetriNetUnfolder]: 119/966 cut-off events. [2020-01-16 21:53:51,361 INFO L130 PetriNetUnfolder]: For 1566520/1566716 co-relation queries the response was YES. [2020-01-16 21:53:51,361 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:53:51,361 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:53:51,362 INFO L426 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:53:51,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:53:51,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1322090143, now seen corresponding path program 72 times [2020-01-16 21:53:51,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:53:51,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514960329] [2020-01-16 21:53:51,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:53:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:53:51,521 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 21:53:51,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514960329] [2020-01-16 21:53:51,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:53:51,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:53:51,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205440535] [2020-01-16 21:53:51,522 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:53:51,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:53:51,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:53:51,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:53:51,523 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:53:51,523 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 452 transitions. Second operand 7 states. [2020-01-16 21:53:51,523 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:53:51,523 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:53:51,523 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:53:56,784 INFO L129 PetriNetUnfolder]: 119/1015 cut-off events. [2020-01-16 21:53:56,784 INFO L130 PetriNetUnfolder]: For 1588621/1588968 co-relation queries the response was YES. [2020-01-16 21:53:56,822 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22504 conditions, 1015 events. 119/1015 cut-off events. For 1588621/1588968 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11283 event pairs. 2/1004 useless extension candidates. Maximal degree in co-relation 21584. Up to 182 conditions per place. [2020-01-16 21:53:56,829 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 259 changer transitions [2020-01-16 21:53:56,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:53:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:53:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:53:56,830 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:53:56,830 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:53:56,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:53:56,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:53:56,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:53:56,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:53:56,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:53:56,832 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:53:56,832 INFO L174 Difference]: Start difference. First operand has 582 places, 452 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:53:56,845 INFO L199 Difference]: Finished difference. Result has 589 places, 452 transitions [2020-01-16 21:53:56,845 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=49780, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=50418, PETRI_PLACES=589, PETRI_TRANSITIONS=452} [2020-01-16 21:53:56,845 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 589 places, 452 transitions [2020-01-16 21:53:56,846 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 589 places, 452 transitions [2020-01-16 21:54:00,091 INFO L129 PetriNetUnfolder]: 119/1015 cut-off events. [2020-01-16 21:54:00,091 INFO L130 PetriNetUnfolder]: For 1606040/1606236 co-relation queries the response was YES. [2020-01-16 21:54:00,139 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22318 conditions, 1015 events. 119/1015 cut-off events. For 1606040/1606236 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11373 event pairs. 3/998 useless extension candidates. Maximal degree in co-relation 21404. Up to 127 conditions per place. [2020-01-16 21:54:00,150 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 589 places, 0 of 452 transitions, 120 of 50418 flow. [2020-01-16 21:54:00,151 INFO L478 AbstractCegarLoop]: Abstraction has has 588 places, 452 transitions [2020-01-16 21:54:00,151 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:54:02,582 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:54:02,582 INFO L130 PetriNetUnfolder]: For 1606040/1606236 co-relation queries the response was YES. [2020-01-16 21:54:02,582 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:54:02,582 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:54:02,583 INFO L426 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:54:02,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:54:02,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1105754595, now seen corresponding path program 73 times [2020-01-16 21:54:02,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:54:02,583 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248370416] [2020-01-16 21:54:02,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:54:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:54:02,736 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 21:54:02,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248370416] [2020-01-16 21:54:02,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:54:02,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:54:02,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574099371] [2020-01-16 21:54:02,737 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:54:02,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:54:02,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:54:02,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:54:02,737 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:54:02,738 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 452 transitions. Second operand 7 states. [2020-01-16 21:54:02,738 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:54:02,738 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:54:02,738 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:54:07,759 INFO L129 PetriNetUnfolder]: 119/1014 cut-off events. [2020-01-16 21:54:07,759 INFO L130 PetriNetUnfolder]: For 1628453/1628800 co-relation queries the response was YES. [2020-01-16 21:54:07,803 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22618 conditions, 1014 events. 119/1014 cut-off events. For 1628453/1628800 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11305 event pairs. 10/1011 useless extension candidates. Maximal degree in co-relation 21695. Up to 178 conditions per place. [2020-01-16 21:54:07,810 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 259 changer transitions [2020-01-16 21:54:07,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:54:07,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:54:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:54:07,811 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:54:07,811 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:54:07,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:54:07,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:54:07,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:54:07,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:54:07,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:54:07,812 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:54:07,813 INFO L174 Difference]: Start difference. First operand has 588 places, 452 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:54:07,824 INFO L199 Difference]: Finished difference. Result has 595 places, 452 transitions [2020-01-16 21:54:07,825 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=50298, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=50936, PETRI_PLACES=595, PETRI_TRANSITIONS=452} [2020-01-16 21:54:07,825 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 595 places, 452 transitions [2020-01-16 21:54:07,825 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 595 places, 452 transitions [2020-01-16 21:54:10,718 INFO L129 PetriNetUnfolder]: 119/1014 cut-off events. [2020-01-16 21:54:10,718 INFO L130 PetriNetUnfolder]: For 1645378/1645574 co-relation queries the response was YES. [2020-01-16 21:54:10,762 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22432 conditions, 1014 events. 119/1014 cut-off events. For 1645378/1645574 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11366 event pairs. 3/994 useless extension candidates. Maximal degree in co-relation 21510. Up to 127 conditions per place. [2020-01-16 21:54:10,773 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 595 places, 0 of 452 transitions, 120 of 50936 flow. [2020-01-16 21:54:10,773 INFO L478 AbstractCegarLoop]: Abstraction has has 594 places, 452 transitions [2020-01-16 21:54:10,773 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:54:13,374 INFO L129 PetriNetUnfolder]: 119/966 cut-off events. [2020-01-16 21:54:13,374 INFO L130 PetriNetUnfolder]: For 1645378/1645574 co-relation queries the response was YES. [2020-01-16 21:54:13,374 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:54:13,375 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:54:13,375 INFO L426 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:54:13,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:54:13,375 INFO L82 PathProgramCache]: Analyzing trace with hash 840250241, now seen corresponding path program 74 times [2020-01-16 21:54:13,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:54:13,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28518535] [2020-01-16 21:54:13,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:54:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:54:13,528 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 21:54:13,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28518535] [2020-01-16 21:54:13,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:54:13,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:54:13,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257304476] [2020-01-16 21:54:13,529 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:54:13,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:54:13,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:54:13,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:54:13,530 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:54:13,530 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 452 transitions. Second operand 7 states. [2020-01-16 21:54:13,530 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:54:13,530 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:54:13,530 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:54:18,320 INFO L129 PetriNetUnfolder]: 119/1013 cut-off events. [2020-01-16 21:54:18,320 INFO L130 PetriNetUnfolder]: For 1667982/1668329 co-relation queries the response was YES. [2020-01-16 21:54:18,361 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22730 conditions, 1013 events. 119/1013 cut-off events. For 1667982/1668329 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11259 event pairs. 15/1015 useless extension candidates. Maximal degree in co-relation 21799. Up to 177 conditions per place. [2020-01-16 21:54:18,368 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 189 selfloop transitions, 259 changer transitions [2020-01-16 21:54:18,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:54:18,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:54:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:54:18,369 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:54:18,369 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:54:18,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:54:18,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:54:18,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:54:18,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:54:18,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:54:18,370 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:54:18,370 INFO L174 Difference]: Start difference. First operand has 594 places, 452 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:54:18,382 INFO L199 Difference]: Finished difference. Result has 602 places, 454 transitions [2020-01-16 21:54:18,383 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=50816, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=51683, PETRI_PLACES=602, PETRI_TRANSITIONS=454} [2020-01-16 21:54:18,383 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 602 places, 454 transitions [2020-01-16 21:54:18,383 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 602 places, 454 transitions [2020-01-16 21:54:21,506 INFO L129 PetriNetUnfolder]: 119/1013 cut-off events. [2020-01-16 21:54:21,507 INFO L130 PetriNetUnfolder]: For 1687082/1687278 co-relation queries the response was YES. [2020-01-16 21:54:21,544 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22606 conditions, 1013 events. 119/1013 cut-off events. For 1687082/1687278 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11349 event pairs. 3/993 useless extension candidates. Maximal degree in co-relation 21670. Up to 127 conditions per place. [2020-01-16 21:54:21,556 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 602 places, 0 of 454 transitions, 120 of 51683 flow. [2020-01-16 21:54:21,556 INFO L478 AbstractCegarLoop]: Abstraction has has 601 places, 454 transitions [2020-01-16 21:54:21,556 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:54:24,246 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:54:24,247 INFO L130 PetriNetUnfolder]: For 1686415/1686551 co-relation queries the response was YES. [2020-01-16 21:54:24,247 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:54:24,247 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:54:24,247 INFO L426 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:54:24,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:54:24,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1157903233, now seen corresponding path program 75 times [2020-01-16 21:54:24,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:54:24,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163889439] [2020-01-16 21:54:24,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:54:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:54:24,435 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 21:54:24,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163889439] [2020-01-16 21:54:24,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:54:24,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:54:24,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189938856] [2020-01-16 21:54:24,436 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:54:24,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:54:24,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:54:24,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:54:24,438 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:54:24,438 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 454 transitions. Second operand 7 states. [2020-01-16 21:54:24,438 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:54:24,438 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:54:24,439 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:54:30,881 INFO L129 PetriNetUnfolder]: 119/1012 cut-off events. [2020-01-16 21:54:30,881 INFO L130 PetriNetUnfolder]: For 1710607/1710999 co-relation queries the response was YES. [2020-01-16 21:54:30,920 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22902 conditions, 1012 events. 119/1012 cut-off events. For 1710607/1710999 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11250 event pairs. 17/1016 useless extension candidates. Maximal degree in co-relation 22010. Up to 177 conditions per place. [2020-01-16 21:54:30,927 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 189 selfloop transitions, 259 changer transitions [2020-01-16 21:54:30,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:54:30,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:54:30,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:54:30,928 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:54:30,928 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:54:30,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:54:30,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:54:30,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:54:30,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:54:30,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:54:30,929 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:54:30,929 INFO L174 Difference]: Start difference. First operand has 601 places, 454 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:54:30,941 INFO L199 Difference]: Finished difference. Result has 608 places, 454 transitions [2020-01-16 21:54:30,942 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=51563, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=52201, PETRI_PLACES=608, PETRI_TRANSITIONS=454} [2020-01-16 21:54:30,942 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 608 places, 454 transitions [2020-01-16 21:54:30,942 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 608 places, 454 transitions [2020-01-16 21:54:34,319 INFO L129 PetriNetUnfolder]: 119/1012 cut-off events. [2020-01-16 21:54:34,320 INFO L130 PetriNetUnfolder]: For 1726683/1726819 co-relation queries the response was YES. [2020-01-16 21:54:34,367 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22716 conditions, 1012 events. 119/1012 cut-off events. For 1726683/1726819 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11319 event pairs. 2/991 useless extension candidates. Maximal degree in co-relation 21828. Up to 127 conditions per place. [2020-01-16 21:54:34,379 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 608 places, 0 of 454 transitions, 120 of 52201 flow. [2020-01-16 21:54:34,379 INFO L478 AbstractCegarLoop]: Abstraction has has 607 places, 454 transitions [2020-01-16 21:54:34,379 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:54:36,944 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:54:36,944 INFO L130 PetriNetUnfolder]: For 1727479/1727659 co-relation queries the response was YES. [2020-01-16 21:54:36,944 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:54:36,945 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:54:36,945 INFO L426 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:54:36,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:54:36,945 INFO L82 PathProgramCache]: Analyzing trace with hash 255435491, now seen corresponding path program 76 times [2020-01-16 21:54:36,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:54:36,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542574079] [2020-01-16 21:54:36,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:54:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:54:37,106 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 21:54:37,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542574079] [2020-01-16 21:54:37,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:54:37,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:54:37,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597743759] [2020-01-16 21:54:37,108 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:54:37,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:54:37,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:54:37,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:54:37,108 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:54:37,108 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 454 transitions. Second operand 7 states. [2020-01-16 21:54:37,108 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:54:37,108 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:54:37,109 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:54:42,388 INFO L129 PetriNetUnfolder]: 119/1011 cut-off events. [2020-01-16 21:54:42,389 INFO L130 PetriNetUnfolder]: For 1751189/1751588 co-relation queries the response was YES. [2020-01-16 21:54:42,435 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23010 conditions, 1011 events. 119/1011 cut-off events. For 1751189/1751588 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11220 event pairs. 25/1023 useless extension candidates. Maximal degree in co-relation 22114. Up to 179 conditions per place. [2020-01-16 21:54:42,442 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 188 selfloop transitions, 259 changer transitions [2020-01-16 21:54:42,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:54:42,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:54:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:54:42,443 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:54:42,443 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:54:42,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:54:42,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:54:42,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:54:42,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:54:42,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:54:42,445 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:54:42,445 INFO L174 Difference]: Start difference. First operand has 607 places, 454 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:54:42,464 INFO L199 Difference]: Finished difference. Result has 614 places, 454 transitions [2020-01-16 21:54:42,464 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=52081, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=52719, PETRI_PLACES=614, PETRI_TRANSITIONS=454} [2020-01-16 21:54:42,464 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 614 places, 454 transitions [2020-01-16 21:54:42,465 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 614 places, 454 transitions [2020-01-16 21:54:45,781 INFO L129 PetriNetUnfolder]: 119/1011 cut-off events. [2020-01-16 21:54:45,781 INFO L130 PetriNetUnfolder]: For 1768202/1768382 co-relation queries the response was YES. [2020-01-16 21:54:45,828 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22824 conditions, 1011 events. 119/1011 cut-off events. For 1768202/1768382 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11327 event pairs. 2/993 useless extension candidates. Maximal degree in co-relation 21932. Up to 127 conditions per place. [2020-01-16 21:54:45,839 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 614 places, 0 of 454 transitions, 120 of 52719 flow. [2020-01-16 21:54:45,840 INFO L478 AbstractCegarLoop]: Abstraction has has 613 places, 454 transitions [2020-01-16 21:54:45,840 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:54:48,334 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:54:48,334 INFO L130 PetriNetUnfolder]: For 1767406/1767542 co-relation queries the response was YES. [2020-01-16 21:54:48,334 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:54:48,334 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:54:48,334 INFO L426 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:54:48,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:54:48,335 INFO L82 PathProgramCache]: Analyzing trace with hash 713918765, now seen corresponding path program 77 times [2020-01-16 21:54:48,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:54:48,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680137745] [2020-01-16 21:54:48,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:54:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:54:48,516 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 21:54:48,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680137745] [2020-01-16 21:54:48,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:54:48,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:54:48,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243119401] [2020-01-16 21:54:48,517 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:54:48,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:54:48,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:54:48,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:54:48,518 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:54:48,518 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 454 transitions. Second operand 7 states. [2020-01-16 21:54:48,518 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:54:48,518 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:54:48,519 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:54:53,728 INFO L129 PetriNetUnfolder]: 119/1010 cut-off events. [2020-01-16 21:54:53,728 INFO L130 PetriNetUnfolder]: For 1792149/1792548 co-relation queries the response was YES. [2020-01-16 21:54:53,773 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23116 conditions, 1010 events. 119/1010 cut-off events. For 1792149/1792548 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11180 event pairs. 1/998 useless extension candidates. Maximal degree in co-relation 22216. Up to 173 conditions per place. [2020-01-16 21:54:53,781 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:54:53,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:54:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:54:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:54:53,782 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:54:53,782 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:54:53,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:54:53,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:54:53,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:54:53,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:54:53,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:54:53,783 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:54:53,783 INFO L174 Difference]: Start difference. First operand has 613 places, 454 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:54:53,796 INFO L199 Difference]: Finished difference. Result has 620 places, 454 transitions [2020-01-16 21:54:53,796 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=52599, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=53237, PETRI_PLACES=620, PETRI_TRANSITIONS=454} [2020-01-16 21:54:53,796 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 620 places, 454 transitions [2020-01-16 21:54:53,796 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 620 places, 454 transitions [2020-01-16 21:54:57,006 INFO L129 PetriNetUnfolder]: 119/1010 cut-off events. [2020-01-16 21:54:57,007 INFO L130 PetriNetUnfolder]: For 1808410/1808546 co-relation queries the response was YES. [2020-01-16 21:54:57,052 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22930 conditions, 1010 events. 119/1010 cut-off events. For 1808410/1808546 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11292 event pairs. 2/990 useless extension candidates. Maximal degree in co-relation 22033. Up to 127 conditions per place. [2020-01-16 21:54:57,063 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 620 places, 0 of 454 transitions, 120 of 53237 flow. [2020-01-16 21:54:57,064 INFO L478 AbstractCegarLoop]: Abstraction has has 619 places, 454 transitions [2020-01-16 21:54:57,064 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:54:59,696 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:54:59,696 INFO L130 PetriNetUnfolder]: For 1808410/1808546 co-relation queries the response was YES. [2020-01-16 21:54:59,696 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:54:59,696 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:54:59,696 INFO L426 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:54:59,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:54:59,696 INFO L82 PathProgramCache]: Analyzing trace with hash -401119265, now seen corresponding path program 78 times [2020-01-16 21:54:59,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:54:59,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417491243] [2020-01-16 21:54:59,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:54:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:54:59,844 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 21:54:59,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417491243] [2020-01-16 21:54:59,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:54:59,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:54:59,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537701364] [2020-01-16 21:54:59,845 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:54:59,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:54:59,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:54:59,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:54:59,846 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:54:59,846 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 454 transitions. Second operand 7 states. [2020-01-16 21:54:59,846 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:54:59,846 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:54:59,846 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:55:05,110 INFO L129 PetriNetUnfolder]: 119/1009 cut-off events. [2020-01-16 21:55:05,111 INFO L130 PetriNetUnfolder]: For 1833938/1834464 co-relation queries the response was YES. [2020-01-16 21:55:05,155 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23220 conditions, 1009 events. 119/1009 cut-off events. For 1833938/1834464 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11199 event pairs. 20/1017 useless extension candidates. Maximal degree in co-relation 22315. Up to 176 conditions per place. [2020-01-16 21:55:05,162 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 189 selfloop transitions, 259 changer transitions [2020-01-16 21:55:05,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:55:05,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:55:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:55:05,163 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:55:05,164 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:55:05,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:55:05,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:55:05,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:55:05,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:55:05,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:55:05,165 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:55:05,165 INFO L174 Difference]: Start difference. First operand has 619 places, 454 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:55:05,177 INFO L199 Difference]: Finished difference. Result has 626 places, 454 transitions [2020-01-16 21:55:05,178 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=53117, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=53755, PETRI_PLACES=626, PETRI_TRANSITIONS=454} [2020-01-16 21:55:05,178 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 626 places, 454 transitions [2020-01-16 21:55:05,178 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 626 places, 454 transitions [2020-01-16 21:55:08,175 INFO L129 PetriNetUnfolder]: 119/1009 cut-off events. [2020-01-16 21:55:08,175 INFO L130 PetriNetUnfolder]: For 1850013/1850149 co-relation queries the response was YES. [2020-01-16 21:55:08,218 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23034 conditions, 1009 events. 119/1009 cut-off events. For 1850013/1850149 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11269 event pairs. 2/989 useless extension candidates. Maximal degree in co-relation 22132. Up to 127 conditions per place. [2020-01-16 21:55:08,232 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 626 places, 0 of 454 transitions, 120 of 53755 flow. [2020-01-16 21:55:08,233 INFO L478 AbstractCegarLoop]: Abstraction has has 625 places, 454 transitions [2020-01-16 21:55:08,233 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:55:11,131 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:55:11,131 INFO L130 PetriNetUnfolder]: For 1850013/1850149 co-relation queries the response was YES. [2020-01-16 21:55:11,131 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:55:11,132 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:55:11,132 INFO L426 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:55:11,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:55:11,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1920797981, now seen corresponding path program 79 times [2020-01-16 21:55:11,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:55:11,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031642064] [2020-01-16 21:55:11,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:55:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:55:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:55:11,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031642064] [2020-01-16 21:55:11,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:55:11,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:55:11,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681684910] [2020-01-16 21:55:11,402 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:55:11,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:55:11,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:55:11,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:55:11,403 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:55:11,403 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 454 transitions. Second operand 7 states. [2020-01-16 21:55:11,403 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:55:11,403 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:55:11,403 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:55:16,455 INFO L129 PetriNetUnfolder]: 119/1008 cut-off events. [2020-01-16 21:55:16,455 INFO L130 PetriNetUnfolder]: For 1875786/1876315 co-relation queries the response was YES. [2020-01-16 21:55:16,496 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23322 conditions, 1008 events. 119/1008 cut-off events. For 1875786/1876315 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11181 event pairs. 12/1008 useless extension candidates. Maximal degree in co-relation 22412. Up to 173 conditions per place. [2020-01-16 21:55:16,504 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:55:16,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:55:16,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:55:16,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:55:16,505 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:55:16,505 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:55:16,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:55:16,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:55:16,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:55:16,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:55:16,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:55:16,506 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:55:16,506 INFO L174 Difference]: Start difference. First operand has 625 places, 454 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:55:16,519 INFO L199 Difference]: Finished difference. Result has 632 places, 454 transitions [2020-01-16 21:55:16,519 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=53635, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=54273, PETRI_PLACES=632, PETRI_TRANSITIONS=454} [2020-01-16 21:55:16,519 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 632 places, 454 transitions [2020-01-16 21:55:16,519 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 632 places, 454 transitions [2020-01-16 21:55:19,704 INFO L129 PetriNetUnfolder]: 119/1008 cut-off events. [2020-01-16 21:55:19,704 INFO L130 PetriNetUnfolder]: For 1891959/1892095 co-relation queries the response was YES. [2020-01-16 21:55:19,744 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23136 conditions, 1008 events. 119/1008 cut-off events. For 1891959/1892095 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11240 event pairs. 2/988 useless extension candidates. Maximal degree in co-relation 22232. Up to 127 conditions per place. [2020-01-16 21:55:19,756 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 632 places, 0 of 454 transitions, 120 of 54273 flow. [2020-01-16 21:55:19,756 INFO L478 AbstractCegarLoop]: Abstraction has has 631 places, 454 transitions [2020-01-16 21:55:19,756 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:55:22,655 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:55:22,655 INFO L130 PetriNetUnfolder]: For 1891959/1892095 co-relation queries the response was YES. [2020-01-16 21:55:22,655 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:55:22,655 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:55:22,655 INFO L426 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:55:22,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:55:22,656 INFO L82 PathProgramCache]: Analyzing trace with hash 150993627, now seen corresponding path program 80 times [2020-01-16 21:55:22,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:55:22,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410138617] [2020-01-16 21:55:22,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:55:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:55:22,795 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 21:55:22,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410138617] [2020-01-16 21:55:22,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:55:22,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:55:22,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243077369] [2020-01-16 21:55:22,797 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:55:22,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:55:22,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:55:22,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:55:22,797 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:55:22,798 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 454 transitions. Second operand 7 states. [2020-01-16 21:55:22,798 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:55:22,798 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:55:22,798 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:55:28,983 INFO L129 PetriNetUnfolder]: 119/1007 cut-off events. [2020-01-16 21:55:28,984 INFO L130 PetriNetUnfolder]: For 1917948/1918477 co-relation queries the response was YES. [2020-01-16 21:55:29,027 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23422 conditions, 1007 events. 119/1007 cut-off events. For 1917948/1918477 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11178 event pairs. 12/1006 useless extension candidates. Maximal degree in co-relation 22510. Up to 175 conditions per place. [2020-01-16 21:55:29,035 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:55:29,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:55:29,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:55:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:55:29,036 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:55:29,036 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:55:29,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:55:29,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:55:29,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:55:29,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:55:29,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:55:29,037 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:55:29,037 INFO L174 Difference]: Start difference. First operand has 631 places, 454 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:55:29,050 INFO L199 Difference]: Finished difference. Result has 639 places, 456 transitions [2020-01-16 21:55:29,050 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=54153, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=55076, PETRI_PLACES=639, PETRI_TRANSITIONS=456} [2020-01-16 21:55:29,051 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 639 places, 456 transitions [2020-01-16 21:55:29,051 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 639 places, 456 transitions [2020-01-16 21:55:32,579 INFO L129 PetriNetUnfolder]: 119/1007 cut-off events. [2020-01-16 21:55:32,580 INFO L130 PetriNetUnfolder]: For 1937112/1937251 co-relation queries the response was YES. [2020-01-16 21:55:32,618 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23348 conditions, 1007 events. 119/1007 cut-off events. For 1937112/1937251 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11224 event pairs. 2/986 useless extension candidates. Maximal degree in co-relation 22429. Up to 127 conditions per place. [2020-01-16 21:55:32,630 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 639 places, 0 of 456 transitions, 120 of 55076 flow. [2020-01-16 21:55:32,630 INFO L478 AbstractCegarLoop]: Abstraction has has 638 places, 456 transitions [2020-01-16 21:55:32,630 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:55:35,547 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:55:35,547 INFO L130 PetriNetUnfolder]: For 1936629/1936722 co-relation queries the response was YES. [2020-01-16 21:55:35,547 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:55:35,547 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:55:35,547 INFO L426 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:55:35,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:55:35,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1459244921, now seen corresponding path program 81 times [2020-01-16 21:55:35,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:55:35,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026070086] [2020-01-16 21:55:35,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:55:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:55:35,714 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 21:55:35,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026070086] [2020-01-16 21:55:35,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:55:35,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:55:35,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723909651] [2020-01-16 21:55:35,715 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:55:35,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:55:35,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:55:35,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:55:35,716 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:55:35,716 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 456 transitions. Second operand 7 states. [2020-01-16 21:55:35,716 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:55:35,716 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:55:35,716 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:55:41,374 INFO L129 PetriNetUnfolder]: 119/1006 cut-off events. [2020-01-16 21:55:41,374 INFO L130 PetriNetUnfolder]: For 1962863/1963275 co-relation queries the response was YES. [2020-01-16 21:55:41,415 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23632 conditions, 1006 events. 119/1006 cut-off events. For 1962863/1963275 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11151 event pairs. 25/1019 useless extension candidates. Maximal degree in co-relation 22705. Up to 172 conditions per place. [2020-01-16 21:55:41,422 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:55:41,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:55:41,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:55:41,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:55:41,423 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:55:41,424 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:55:41,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:55:41,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:55:41,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:55:41,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:55:41,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:55:41,425 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:55:41,425 INFO L174 Difference]: Start difference. First operand has 638 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:55:41,437 INFO L199 Difference]: Finished difference. Result has 645 places, 456 transitions [2020-01-16 21:55:41,438 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=54956, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=55594, PETRI_PLACES=645, PETRI_TRANSITIONS=456} [2020-01-16 21:55:41,438 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 645 places, 456 transitions [2020-01-16 21:55:41,438 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 645 places, 456 transitions [2020-01-16 21:55:45,106 INFO L129 PetriNetUnfolder]: 119/1006 cut-off events. [2020-01-16 21:55:45,107 INFO L130 PetriNetUnfolder]: For 1979085/1979178 co-relation queries the response was YES. [2020-01-16 21:55:45,154 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23446 conditions, 1006 events. 119/1006 cut-off events. For 1979085/1979178 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11264 event pairs. 2/986 useless extension candidates. Maximal degree in co-relation 22520. Up to 127 conditions per place. [2020-01-16 21:55:45,166 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 645 places, 0 of 456 transitions, 120 of 55594 flow. [2020-01-16 21:55:45,166 INFO L478 AbstractCegarLoop]: Abstraction has has 644 places, 456 transitions [2020-01-16 21:55:45,166 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:55:48,084 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:55:48,084 INFO L130 PetriNetUnfolder]: For 1979362/1979457 co-relation queries the response was YES. [2020-01-16 21:55:48,084 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:55:48,084 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:55:48,085 INFO L426 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:55:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:55:48,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1065151123, now seen corresponding path program 82 times [2020-01-16 21:55:48,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:55:48,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651513829] [2020-01-16 21:55:48,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:55:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:55:48,229 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 21:55:48,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651513829] [2020-01-16 21:55:48,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:55:48,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:55:48,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741315755] [2020-01-16 21:55:48,230 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:55:48,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:55:48,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:55:48,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:55:48,231 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:55:48,231 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 456 transitions. Second operand 7 states. [2020-01-16 21:55:48,232 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:55:48,232 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:55:48,232 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:55:53,937 INFO L129 PetriNetUnfolder]: 119/1005 cut-off events. [2020-01-16 21:55:53,937 INFO L130 PetriNetUnfolder]: For 2005848/2006265 co-relation queries the response was YES. [2020-01-16 21:55:53,978 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23728 conditions, 1005 events. 119/1005 cut-off events. For 2005848/2006265 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11132 event pairs. 1/994 useless extension candidates. Maximal degree in co-relation 22794. Up to 173 conditions per place. [2020-01-16 21:55:53,985 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:55:53,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:55:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:55:53,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:55:53,987 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:55:53,987 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:55:53,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:55:53,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:55:53,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:55:53,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:55:53,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:55:53,988 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:55:53,989 INFO L174 Difference]: Start difference. First operand has 644 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:55:54,002 INFO L199 Difference]: Finished difference. Result has 651 places, 456 transitions [2020-01-16 21:55:54,002 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=55474, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=56112, PETRI_PLACES=651, PETRI_TRANSITIONS=456} [2020-01-16 21:55:54,002 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 651 places, 456 transitions [2020-01-16 21:55:54,002 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 651 places, 456 transitions [2020-01-16 21:55:57,713 INFO L129 PetriNetUnfolder]: 119/1005 cut-off events. [2020-01-16 21:55:57,713 INFO L130 PetriNetUnfolder]: For 2022657/2022752 co-relation queries the response was YES. [2020-01-16 21:55:57,751 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23542 conditions, 1005 events. 119/1005 cut-off events. For 2022657/2022752 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11225 event pairs. 2/984 useless extension candidates. Maximal degree in co-relation 22611. Up to 127 conditions per place. [2020-01-16 21:55:57,763 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 651 places, 0 of 456 transitions, 120 of 56112 flow. [2020-01-16 21:55:57,763 INFO L478 AbstractCegarLoop]: Abstraction has has 650 places, 456 transitions [2020-01-16 21:55:57,763 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:56:00,784 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:56:00,784 INFO L130 PetriNetUnfolder]: For 2022657/2022752 co-relation queries the response was YES. [2020-01-16 21:56:00,784 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:56:00,785 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:56:00,785 INFO L426 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:56:00,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:56:00,785 INFO L82 PathProgramCache]: Analyzing trace with hash 12344295, now seen corresponding path program 83 times [2020-01-16 21:56:00,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:56:00,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884338278] [2020-01-16 21:56:00,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:56:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:56:00,915 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 21:56:00,916 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884338278] [2020-01-16 21:56:00,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:56:00,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:56:00,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161039140] [2020-01-16 21:56:00,917 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:56:00,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:56:00,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:56:00,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:56:00,918 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:56:00,918 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 456 transitions. Second operand 7 states. [2020-01-16 21:56:00,918 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:56:00,918 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:56:00,918 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:56:07,474 INFO L129 PetriNetUnfolder]: 119/1004 cut-off events. [2020-01-16 21:56:07,474 INFO L130 PetriNetUnfolder]: For 2049429/2049846 co-relation queries the response was YES. [2020-01-16 21:56:07,516 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23822 conditions, 1004 events. 119/1004 cut-off events. For 2049429/2049846 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11103 event pairs. 19/1011 useless extension candidates. Maximal degree in co-relation 22883. Up to 174 conditions per place. [2020-01-16 21:56:07,524 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:56:07,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:56:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:56:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:56:07,525 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:56:07,525 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:56:07,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:56:07,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:56:07,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:56:07,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:56:07,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:56:07,526 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:56:07,526 INFO L174 Difference]: Start difference. First operand has 650 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:56:07,539 INFO L199 Difference]: Finished difference. Result has 657 places, 456 transitions [2020-01-16 21:56:07,540 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=55992, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=56630, PETRI_PLACES=657, PETRI_TRANSITIONS=456} [2020-01-16 21:56:07,540 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 657 places, 456 transitions [2020-01-16 21:56:07,540 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 657 places, 456 transitions [2020-01-16 21:56:11,248 INFO L129 PetriNetUnfolder]: 119/1004 cut-off events. [2020-01-16 21:56:11,248 INFO L130 PetriNetUnfolder]: For 2065928/2066022 co-relation queries the response was YES. [2020-01-16 21:56:11,287 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23636 conditions, 1004 events. 119/1004 cut-off events. For 2065928/2066022 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11221 event pairs. 2/983 useless extension candidates. Maximal degree in co-relation 22698. Up to 127 conditions per place. [2020-01-16 21:56:11,300 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 657 places, 0 of 456 transitions, 120 of 56630 flow. [2020-01-16 21:56:11,300 INFO L478 AbstractCegarLoop]: Abstraction has has 656 places, 456 transitions [2020-01-16 21:56:11,300 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:56:14,337 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:56:14,337 INFO L130 PetriNetUnfolder]: For 2066152/2066257 co-relation queries the response was YES. [2020-01-16 21:56:14,337 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:56:14,337 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:56:14,337 INFO L426 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:56:14,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:56:14,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1125869013, now seen corresponding path program 84 times [2020-01-16 21:56:14,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:56:14,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783740284] [2020-01-16 21:56:14,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:56:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:56:14,472 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 21:56:14,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783740284] [2020-01-16 21:56:14,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:56:14,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:56:14,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522497450] [2020-01-16 21:56:14,473 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:56:14,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:56:14,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:56:14,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:56:14,474 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:56:14,474 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 456 transitions. Second operand 7 states. [2020-01-16 21:56:14,474 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:56:14,474 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:56:14,474 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:56:20,279 INFO L129 PetriNetUnfolder]: 119/1003 cut-off events. [2020-01-16 21:56:20,280 INFO L130 PetriNetUnfolder]: For 2092468/2092882 co-relation queries the response was YES. [2020-01-16 21:56:20,322 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23914 conditions, 1003 events. 119/1003 cut-off events. For 2092468/2092882 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11116 event pairs. 25/1016 useless extension candidates. Maximal degree in co-relation 22968. Up to 172 conditions per place. [2020-01-16 21:56:20,330 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:56:20,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:56:20,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:56:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:56:20,331 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:56:20,331 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:56:20,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:56:20,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:56:20,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:56:20,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:56:20,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:56:20,332 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:56:20,332 INFO L174 Difference]: Start difference. First operand has 656 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:56:20,347 INFO L199 Difference]: Finished difference. Result has 663 places, 456 transitions [2020-01-16 21:56:20,347 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=56510, PETRI_DIFFERENCE_MINUEND_PLACES=656, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=57148, PETRI_PLACES=663, PETRI_TRANSITIONS=456} [2020-01-16 21:56:20,347 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 663 places, 456 transitions [2020-01-16 21:56:20,347 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 663 places, 456 transitions [2020-01-16 21:56:24,102 INFO L129 PetriNetUnfolder]: 119/1003 cut-off events. [2020-01-16 21:56:24,102 INFO L130 PetriNetUnfolder]: For 2109801/2109906 co-relation queries the response was YES. [2020-01-16 21:56:24,141 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23728 conditions, 1003 events. 119/1003 cut-off events. For 2109801/2109906 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11218 event pairs. 1/981 useless extension candidates. Maximal degree in co-relation 22783. Up to 127 conditions per place. [2020-01-16 21:56:24,153 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 663 places, 0 of 456 transitions, 120 of 57148 flow. [2020-01-16 21:56:24,153 INFO L478 AbstractCegarLoop]: Abstraction has has 662 places, 456 transitions [2020-01-16 21:56:24,153 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:56:27,209 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:56:27,210 INFO L130 PetriNetUnfolder]: For 2109783/2109921 co-relation queries the response was YES. [2020-01-16 21:56:27,210 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:56:27,210 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:56:27,210 INFO L426 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:56:27,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:56:27,210 INFO L82 PathProgramCache]: Analyzing trace with hash -110083621, now seen corresponding path program 85 times [2020-01-16 21:56:27,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:56:27,210 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646834187] [2020-01-16 21:56:27,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:56:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:56:27,361 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 21:56:27,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646834187] [2020-01-16 21:56:27,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:56:27,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:56:27,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100770972] [2020-01-16 21:56:27,363 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:56:27,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:56:27,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:56:27,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:56:27,363 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:56:27,364 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 456 transitions. Second operand 7 states. [2020-01-16 21:56:27,364 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:56:27,364 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:56:27,364 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:56:33,103 INFO L129 PetriNetUnfolder]: 119/1002 cut-off events. [2020-01-16 21:56:33,103 INFO L130 PetriNetUnfolder]: For 2136679/2137098 co-relation queries the response was YES. [2020-01-16 21:56:33,146 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24004 conditions, 1002 events. 119/1002 cut-off events. For 2136679/2137098 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11105 event pairs. 17/1007 useless extension candidates. Maximal degree in co-relation 23051. Up to 171 conditions per place. [2020-01-16 21:56:33,154 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:56:33,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:56:33,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:56:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:56:33,155 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:56:33,155 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:56:33,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:56:33,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:56:33,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:56:33,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:56:33,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:56:33,156 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:56:33,156 INFO L174 Difference]: Start difference. First operand has 662 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:56:33,170 INFO L199 Difference]: Finished difference. Result has 669 places, 456 transitions [2020-01-16 21:56:33,170 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=57028, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=57666, PETRI_PLACES=669, PETRI_TRANSITIONS=456} [2020-01-16 21:56:33,171 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 669 places, 456 transitions [2020-01-16 21:56:33,171 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 669 places, 456 transitions [2020-01-16 21:56:36,904 INFO L129 PetriNetUnfolder]: 119/1002 cut-off events. [2020-01-16 21:56:36,904 INFO L130 PetriNetUnfolder]: For 2154135/2154276 co-relation queries the response was YES. [2020-01-16 21:56:36,945 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23818 conditions, 1002 events. 119/1002 cut-off events. For 2154135/2154276 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11180 event pairs. 2/984 useless extension candidates. Maximal degree in co-relation 22869. Up to 127 conditions per place. [2020-01-16 21:56:36,959 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 669 places, 0 of 456 transitions, 120 of 57666 flow. [2020-01-16 21:56:36,959 INFO L478 AbstractCegarLoop]: Abstraction has has 668 places, 456 transitions [2020-01-16 21:56:36,959 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:56:40,059 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:56:40,060 INFO L130 PetriNetUnfolder]: For 2154135/2154276 co-relation queries the response was YES. [2020-01-16 21:56:40,060 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:56:40,060 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:56:40,060 INFO L426 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:56:40,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:56:40,060 INFO L82 PathProgramCache]: Analyzing trace with hash 579279693, now seen corresponding path program 86 times [2020-01-16 21:56:40,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:56:40,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497829788] [2020-01-16 21:56:40,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:56:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:56:40,215 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 21:56:40,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497829788] [2020-01-16 21:56:40,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:56:40,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:56:40,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502816953] [2020-01-16 21:56:40,216 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:56:40,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:56:40,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:56:40,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:56:40,217 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:56:40,217 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 456 transitions. Second operand 7 states. [2020-01-16 21:56:40,217 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:56:40,217 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:56:40,217 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:56:46,577 INFO L129 PetriNetUnfolder]: 119/1001 cut-off events. [2020-01-16 21:56:46,578 INFO L130 PetriNetUnfolder]: For 2181246/2181669 co-relation queries the response was YES. [2020-01-16 21:56:46,621 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24092 conditions, 1001 events. 119/1001 cut-off events. For 2181246/2181669 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11107 event pairs. 9/999 useless extension candidates. Maximal degree in co-relation 23135. Up to 174 conditions per place. [2020-01-16 21:56:46,629 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:56:46,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:56:46,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:56:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:56:46,630 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:56:46,630 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:56:46,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:56:46,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:56:46,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:56:46,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:56:46,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:56:46,631 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:56:46,631 INFO L174 Difference]: Start difference. First operand has 668 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:56:46,653 INFO L199 Difference]: Finished difference. Result has 675 places, 456 transitions [2020-01-16 21:56:46,653 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=57546, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=58184, PETRI_PLACES=675, PETRI_TRANSITIONS=456} [2020-01-16 21:56:46,653 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 675 places, 456 transitions [2020-01-16 21:56:46,654 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 675 places, 456 transitions [2020-01-16 21:56:50,158 INFO L129 PetriNetUnfolder]: 119/1001 cut-off events. [2020-01-16 21:56:50,159 INFO L130 PetriNetUnfolder]: For 2198501/2198642 co-relation queries the response was YES. [2020-01-16 21:56:50,199 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23906 conditions, 1001 events. 119/1001 cut-off events. For 2198501/2198642 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11191 event pairs. 2/983 useless extension candidates. Maximal degree in co-relation 22950. Up to 127 conditions per place. [2020-01-16 21:56:50,212 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 675 places, 0 of 456 transitions, 120 of 58184 flow. [2020-01-16 21:56:50,212 INFO L478 AbstractCegarLoop]: Abstraction has has 674 places, 456 transitions [2020-01-16 21:56:50,212 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:56:53,321 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:56:53,321 INFO L130 PetriNetUnfolder]: For 2198018/2198113 co-relation queries the response was YES. [2020-01-16 21:56:53,321 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:56:53,321 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:56:53,321 INFO L426 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:56:53,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:56:53,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1387141167, now seen corresponding path program 87 times [2020-01-16 21:56:53,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:56:53,322 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531924230] [2020-01-16 21:56:53,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:56:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:56:53,469 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 21:56:53,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531924230] [2020-01-16 21:56:53,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:56:53,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:56:53,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626887174] [2020-01-16 21:56:53,470 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:56:53,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:56:53,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:56:53,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:56:53,471 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:56:53,471 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 456 transitions. Second operand 7 states. [2020-01-16 21:56:53,471 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:56:53,471 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:56:53,471 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:56:58,989 INFO L129 PetriNetUnfolder]: 119/1000 cut-off events. [2020-01-16 21:56:58,989 INFO L130 PetriNetUnfolder]: For 2228965/2229798 co-relation queries the response was YES. [2020-01-16 21:56:59,033 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24178 conditions, 1000 events. 119/1000 cut-off events. For 2228965/2229798 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11070 event pairs. 39/1027 useless extension candidates. Maximal degree in co-relation 23214. Up to 174 conditions per place. [2020-01-16 21:56:59,041 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:56:59,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:56:59,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:56:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:56:59,042 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:56:59,042 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:56:59,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:56:59,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:56:59,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:56:59,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:56:59,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:56:59,043 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:56:59,043 INFO L174 Difference]: Start difference. First operand has 674 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:56:59,056 INFO L199 Difference]: Finished difference. Result has 681 places, 456 transitions [2020-01-16 21:56:59,057 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=58064, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=58702, PETRI_PLACES=681, PETRI_TRANSITIONS=456} [2020-01-16 21:56:59,057 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 681 places, 456 transitions [2020-01-16 21:56:59,057 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 681 places, 456 transitions [2020-01-16 21:57:02,446 INFO L129 PetriNetUnfolder]: 119/1000 cut-off events. [2020-01-16 21:57:02,446 INFO L130 PetriNetUnfolder]: For 2242943/2243037 co-relation queries the response was YES. [2020-01-16 21:57:02,489 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23992 conditions, 1000 events. 119/1000 cut-off events. For 2242943/2243037 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11160 event pairs. 2/982 useless extension candidates. Maximal degree in co-relation 23028. Up to 127 conditions per place. [2020-01-16 21:57:02,502 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 681 places, 0 of 456 transitions, 120 of 58702 flow. [2020-01-16 21:57:02,502 INFO L478 AbstractCegarLoop]: Abstraction has has 680 places, 456 transitions [2020-01-16 21:57:02,502 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:57:05,639 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:57:05,639 INFO L130 PetriNetUnfolder]: For 2242943/2243037 co-relation queries the response was YES. [2020-01-16 21:57:05,639 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:57:05,639 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:57:05,639 INFO L426 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:57:05,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:57:05,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1634645761, now seen corresponding path program 88 times [2020-01-16 21:57:05,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:57:05,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651783289] [2020-01-16 21:57:05,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:57:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:57:05,903 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 21:57:05,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651783289] [2020-01-16 21:57:05,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:57:05,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:57:05,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423535302] [2020-01-16 21:57:05,904 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:57:05,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:57:05,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:57:05,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:57:05,905 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:57:05,905 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 456 transitions. Second operand 7 states. [2020-01-16 21:57:05,906 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:57:05,906 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:57:05,906 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:57:11,488 INFO L129 PetriNetUnfolder]: 119/999 cut-off events. [2020-01-16 21:57:11,489 INFO L130 PetriNetUnfolder]: For 2274135/2274966 co-relation queries the response was YES. [2020-01-16 21:57:11,536 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24262 conditions, 999 events. 119/999 cut-off events. For 2274135/2274966 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11081 event pairs. 2/989 useless extension candidates. Maximal degree in co-relation 23290. Up to 175 conditions per place. [2020-01-16 21:57:11,544 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 21:57:11,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:57:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:57:11,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:57:11,545 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:57:11,545 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:57:11,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:57:11,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:57:11,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:57:11,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:57:11,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:57:11,546 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:57:11,546 INFO L174 Difference]: Start difference. First operand has 680 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:57:11,560 INFO L199 Difference]: Finished difference. Result has 687 places, 456 transitions [2020-01-16 21:57:11,560 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=58582, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=59220, PETRI_PLACES=687, PETRI_TRANSITIONS=456} [2020-01-16 21:57:11,561 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 687 places, 456 transitions [2020-01-16 21:57:11,561 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 687 places, 456 transitions [2020-01-16 21:57:14,637 INFO L129 PetriNetUnfolder]: 119/999 cut-off events. [2020-01-16 21:57:14,637 INFO L130 PetriNetUnfolder]: For 2288372/2288466 co-relation queries the response was YES. [2020-01-16 21:57:14,682 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24076 conditions, 999 events. 119/999 cut-off events. For 2288372/2288466 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11152 event pairs. 2/981 useless extension candidates. Maximal degree in co-relation 23105. Up to 127 conditions per place. [2020-01-16 21:57:14,695 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 687 places, 0 of 456 transitions, 120 of 59220 flow. [2020-01-16 21:57:14,695 INFO L478 AbstractCegarLoop]: Abstraction has has 686 places, 456 transitions [2020-01-16 21:57:14,695 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:57:17,739 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:57:17,739 INFO L130 PetriNetUnfolder]: For 2288372/2288466 co-relation queries the response was YES. [2020-01-16 21:57:17,739 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:57:17,739 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:57:17,739 INFO L426 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:57:17,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:57:17,739 INFO L82 PathProgramCache]: Analyzing trace with hash 545878333, now seen corresponding path program 89 times [2020-01-16 21:57:17,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:57:17,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128135693] [2020-01-16 21:57:17,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:57:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:57:17,883 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 21:57:17,883 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128135693] [2020-01-16 21:57:17,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:57:17,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:57:17,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840444183] [2020-01-16 21:57:17,884 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:57:17,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:57:17,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:57:17,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:57:17,885 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:57:17,885 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 456 transitions. Second operand 7 states. [2020-01-16 21:57:17,885 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:57:17,885 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:57:17,885 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:57:23,530 INFO L129 PetriNetUnfolder]: 119/998 cut-off events. [2020-01-16 21:57:23,530 INFO L130 PetriNetUnfolder]: For 2320067/2320888 co-relation queries the response was YES. [2020-01-16 21:57:23,579 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24344 conditions, 998 events. 119/998 cut-off events. For 2320067/2320888 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11039 event pairs. 33/1019 useless extension candidates. Maximal degree in co-relation 23365. Up to 172 conditions per place. [2020-01-16 21:57:23,586 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 21:57:23,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:57:23,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:57:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:57:23,587 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:57:23,587 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:57:23,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:57:23,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:57:23,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:57:23,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:57:23,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:57:23,589 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:57:23,589 INFO L174 Difference]: Start difference. First operand has 686 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:57:23,603 INFO L199 Difference]: Finished difference. Result has 693 places, 456 transitions [2020-01-16 21:57:23,603 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=59100, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=59738, PETRI_PLACES=693, PETRI_TRANSITIONS=456} [2020-01-16 21:57:23,604 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 693 places, 456 transitions [2020-01-16 21:57:23,604 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 693 places, 456 transitions [2020-01-16 21:57:27,033 INFO L129 PetriNetUnfolder]: 119/998 cut-off events. [2020-01-16 21:57:27,033 INFO L130 PetriNetUnfolder]: For 2334115/2334209 co-relation queries the response was YES. [2020-01-16 21:57:27,082 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24158 conditions, 998 events. 119/998 cut-off events. For 2334115/2334209 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11151 event pairs. 2/978 useless extension candidates. Maximal degree in co-relation 23183. Up to 127 conditions per place. [2020-01-16 21:57:27,095 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 693 places, 0 of 456 transitions, 120 of 59738 flow. [2020-01-16 21:57:27,095 INFO L478 AbstractCegarLoop]: Abstraction has has 692 places, 456 transitions [2020-01-16 21:57:27,095 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:57:29,924 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:57:29,924 INFO L130 PetriNetUnfolder]: For 2334717/2334834 co-relation queries the response was YES. [2020-01-16 21:57:29,924 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:57:29,924 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:57:29,924 INFO L426 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:57:29,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:57:29,925 INFO L82 PathProgramCache]: Analyzing trace with hash 448349463, now seen corresponding path program 90 times [2020-01-16 21:57:29,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:57:29,925 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482898383] [2020-01-16 21:57:29,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:57:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:57:30,062 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 21:57:30,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482898383] [2020-01-16 21:57:30,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:57:30,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:57:30,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475828175] [2020-01-16 21:57:30,063 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:57:30,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:57:30,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:57:30,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:57:30,063 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:57:30,063 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 456 transitions. Second operand 7 states. [2020-01-16 21:57:30,064 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:57:30,064 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:57:30,064 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:57:35,875 INFO L129 PetriNetUnfolder]: 119/997 cut-off events. [2020-01-16 21:57:35,875 INFO L130 PetriNetUnfolder]: For 2365582/2366358 co-relation queries the response was YES. [2020-01-16 21:57:35,925 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24424 conditions, 997 events. 119/997 cut-off events. For 2365582/2366358 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11030 event pairs. 2/987 useless extension candidates. Maximal degree in co-relation 23441. Up to 172 conditions per place. [2020-01-16 21:57:35,933 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:57:35,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:57:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:57:35,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:57:35,934 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:57:35,934 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:57:35,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:57:35,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:57:35,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:57:35,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:57:35,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:57:35,936 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:57:35,936 INFO L174 Difference]: Start difference. First operand has 692 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:57:35,951 INFO L199 Difference]: Finished difference. Result has 699 places, 456 transitions [2020-01-16 21:57:35,951 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=59618, PETRI_DIFFERENCE_MINUEND_PLACES=692, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=60256, PETRI_PLACES=699, PETRI_TRANSITIONS=456} [2020-01-16 21:57:35,952 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 699 places, 456 transitions [2020-01-16 21:57:35,952 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 699 places, 456 transitions [2020-01-16 21:57:39,472 INFO L129 PetriNetUnfolder]: 119/997 cut-off events. [2020-01-16 21:57:39,473 INFO L130 PetriNetUnfolder]: For 2380803/2380920 co-relation queries the response was YES. [2020-01-16 21:57:39,523 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24238 conditions, 997 events. 119/997 cut-off events. For 2380803/2380920 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11130 event pairs. 2/977 useless extension candidates. Maximal degree in co-relation 23261. Up to 127 conditions per place. [2020-01-16 21:57:39,536 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 699 places, 0 of 456 transitions, 120 of 60256 flow. [2020-01-16 21:57:39,536 INFO L478 AbstractCegarLoop]: Abstraction has has 698 places, 456 transitions [2020-01-16 21:57:39,537 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:57:42,537 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:57:42,537 INFO L130 PetriNetUnfolder]: For 2380803/2380920 co-relation queries the response was YES. [2020-01-16 21:57:42,538 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:57:42,538 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:57:42,538 INFO L426 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:57:42,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:57:42,538 INFO L82 PathProgramCache]: Analyzing trace with hash -2088018999, now seen corresponding path program 91 times [2020-01-16 21:57:42,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:57:42,538 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950358218] [2020-01-16 21:57:42,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:57:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:57:42,681 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 21:57:42,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950358218] [2020-01-16 21:57:42,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:57:42,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:57:42,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277068676] [2020-01-16 21:57:42,682 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:57:42,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:57:42,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:57:42,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:57:42,683 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:57:42,683 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 456 transitions. Second operand 7 states. [2020-01-16 21:57:42,683 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:57:42,683 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:57:42,683 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:57:49,209 INFO L129 PetriNetUnfolder]: 119/996 cut-off events. [2020-01-16 21:57:49,209 INFO L130 PetriNetUnfolder]: For 2411914/2412690 co-relation queries the response was YES. [2020-01-16 21:57:49,253 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24502 conditions, 996 events. 119/996 cut-off events. For 2411914/2412690 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11013 event pairs. 24/1007 useless extension candidates. Maximal degree in co-relation 23517. Up to 165 conditions per place. [2020-01-16 21:57:49,261 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:57:49,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:57:49,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:57:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:57:49,262 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:57:49,262 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:57:49,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:57:49,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:57:49,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:57:49,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:57:49,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:57:49,263 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:57:49,263 INFO L174 Difference]: Start difference. First operand has 698 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:57:49,277 INFO L199 Difference]: Finished difference. Result has 705 places, 456 transitions [2020-01-16 21:57:49,278 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=60136, PETRI_DIFFERENCE_MINUEND_PLACES=698, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=60774, PETRI_PLACES=705, PETRI_TRANSITIONS=456} [2020-01-16 21:57:49,278 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 705 places, 456 transitions [2020-01-16 21:57:49,278 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 705 places, 456 transitions [2020-01-16 21:57:53,060 INFO L129 PetriNetUnfolder]: 119/996 cut-off events. [2020-01-16 21:57:53,060 INFO L130 PetriNetUnfolder]: For 2427254/2427375 co-relation queries the response was YES. [2020-01-16 21:57:53,112 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24316 conditions, 996 events. 119/996 cut-off events. For 2427254/2427375 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11111 event pairs. 2/979 useless extension candidates. Maximal degree in co-relation 23332. Up to 127 conditions per place. [2020-01-16 21:57:53,126 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 705 places, 0 of 456 transitions, 120 of 60774 flow. [2020-01-16 21:57:53,126 INFO L478 AbstractCegarLoop]: Abstraction has has 704 places, 456 transitions [2020-01-16 21:57:53,126 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:57:56,290 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:57:56,291 INFO L130 PetriNetUnfolder]: For 2427254/2427375 co-relation queries the response was YES. [2020-01-16 21:57:56,291 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:57:56,291 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:57:56,291 INFO L426 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:57:56,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:57:56,291 INFO L82 PathProgramCache]: Analyzing trace with hash 742191861, now seen corresponding path program 92 times [2020-01-16 21:57:56,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:57:56,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642537758] [2020-01-16 21:57:56,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:57:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:57:56,425 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 21:57:56,425 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642537758] [2020-01-16 21:57:56,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:57:56,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:57:56,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251583793] [2020-01-16 21:57:56,426 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:57:56,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:57:56,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:57:56,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:57:56,427 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:57:56,427 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 704 places, 456 transitions. Second operand 7 states. [2020-01-16 21:57:56,427 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:57:56,427 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:57:56,428 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:58:02,411 INFO L129 PetriNetUnfolder]: 119/995 cut-off events. [2020-01-16 21:58:02,411 INFO L130 PetriNetUnfolder]: For 2458581/2459369 co-relation queries the response was YES. [2020-01-16 21:58:02,456 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24578 conditions, 995 events. 119/995 cut-off events. For 2458581/2459369 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11004 event pairs. 22/1004 useless extension candidates. Maximal degree in co-relation 23620. Up to 167 conditions per place. [2020-01-16 21:58:02,464 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:58:02,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:58:02,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:58:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:58:02,465 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:58:02,466 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:58:02,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:58:02,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:58:02,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:58:02,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:58:02,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:58:02,467 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:58:02,467 INFO L174 Difference]: Start difference. First operand has 704 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:58:02,486 INFO L199 Difference]: Finished difference. Result has 711 places, 456 transitions [2020-01-16 21:58:02,486 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=60654, PETRI_DIFFERENCE_MINUEND_PLACES=704, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=61292, PETRI_PLACES=711, PETRI_TRANSITIONS=456} [2020-01-16 21:58:02,487 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 711 places, 456 transitions [2020-01-16 21:58:02,487 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 711 places, 456 transitions [2020-01-16 21:58:06,327 INFO L129 PetriNetUnfolder]: 119/995 cut-off events. [2020-01-16 21:58:06,327 INFO L130 PetriNetUnfolder]: For 2474288/2474412 co-relation queries the response was YES. [2020-01-16 21:58:06,368 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24392 conditions, 995 events. 119/995 cut-off events. For 2474288/2474412 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11080 event pairs. 2/978 useless extension candidates. Maximal degree in co-relation 23435. Up to 127 conditions per place. [2020-01-16 21:58:06,383 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 711 places, 0 of 456 transitions, 120 of 61292 flow. [2020-01-16 21:58:06,383 INFO L478 AbstractCegarLoop]: Abstraction has has 710 places, 456 transitions [2020-01-16 21:58:06,383 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:58:09,740 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:58:09,740 INFO L130 PetriNetUnfolder]: For 2474288/2474412 co-relation queries the response was YES. [2020-01-16 21:58:09,741 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:58:09,741 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:58:09,741 INFO L426 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:58:09,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:58:09,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1332164545, now seen corresponding path program 93 times [2020-01-16 21:58:09,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:58:09,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864168452] [2020-01-16 21:58:09,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:58:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:58:09,880 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 21:58:09,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864168452] [2020-01-16 21:58:09,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:58:09,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:58:09,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237208177] [2020-01-16 21:58:09,881 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:58:09,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:58:09,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:58:09,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:58:09,882 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:58:09,882 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 456 transitions. Second operand 7 states. [2020-01-16 21:58:09,882 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:58:09,882 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:58:09,882 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:58:15,597 INFO L129 PetriNetUnfolder]: 119/994 cut-off events. [2020-01-16 21:58:15,597 INFO L130 PetriNetUnfolder]: For 2505908/2506708 co-relation queries the response was YES. [2020-01-16 21:58:15,644 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24652 conditions, 994 events. 119/994 cut-off events. For 2505908/2506708 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10989 event pairs. 30/1011 useless extension candidates. Maximal degree in co-relation 23687. Up to 170 conditions per place. [2020-01-16 21:58:15,652 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 21:58:15,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:58:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:58:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:58:15,653 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:58:15,653 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:58:15,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:58:15,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:58:15,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:58:15,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:58:15,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:58:15,654 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:58:15,654 INFO L174 Difference]: Start difference. First operand has 710 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:58:15,668 INFO L199 Difference]: Finished difference. Result has 717 places, 456 transitions [2020-01-16 21:58:15,669 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=61172, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=61810, PETRI_PLACES=717, PETRI_TRANSITIONS=456} [2020-01-16 21:58:15,669 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 717 places, 456 transitions [2020-01-16 21:58:15,669 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 717 places, 456 transitions [2020-01-16 21:58:19,134 INFO L129 PetriNetUnfolder]: 119/994 cut-off events. [2020-01-16 21:58:19,134 INFO L130 PetriNetUnfolder]: For 2521190/2521314 co-relation queries the response was YES. [2020-01-16 21:58:19,179 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24466 conditions, 994 events. 119/994 cut-off events. For 2521190/2521314 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11056 event pairs. 2/977 useless extension candidates. Maximal degree in co-relation 23502. Up to 127 conditions per place. [2020-01-16 21:58:19,193 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 717 places, 0 of 456 transitions, 120 of 61810 flow. [2020-01-16 21:58:19,193 INFO L478 AbstractCegarLoop]: Abstraction has has 716 places, 456 transitions [2020-01-16 21:58:19,193 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:58:22,628 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:58:22,628 INFO L130 PetriNetUnfolder]: For 2522218/2522432 co-relation queries the response was YES. [2020-01-16 21:58:22,629 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:58:22,629 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:58:22,629 INFO L426 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:58:22,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:58:22,629 INFO L82 PathProgramCache]: Analyzing trace with hash 15720413, now seen corresponding path program 94 times [2020-01-16 21:58:22,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:58:22,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720246779] [2020-01-16 21:58:22,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:58:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:58:22,778 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 21:58:22,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720246779] [2020-01-16 21:58:22,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:58:22,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:58:22,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737090265] [2020-01-16 21:58:22,779 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:58:22,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:58:22,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:58:22,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:58:22,780 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:58:22,780 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 716 places, 456 transitions. Second operand 7 states. [2020-01-16 21:58:22,780 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:58:22,780 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:58:22,780 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:58:29,365 INFO L129 PetriNetUnfolder]: 119/993 cut-off events. [2020-01-16 21:58:29,365 INFO L130 PetriNetUnfolder]: For 2549911/2550323 co-relation queries the response was YES. [2020-01-16 21:58:29,418 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24724 conditions, 993 events. 119/993 cut-off events. For 2549911/2550323 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10977 event pairs. 9/990 useless extension candidates. Maximal degree in co-relation 23752. Up to 170 conditions per place. [2020-01-16 21:58:29,426 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:58:29,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:58:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:58:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:58:29,427 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:58:29,427 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:58:29,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:58:29,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:58:29,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:58:29,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:58:29,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:58:29,428 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:58:29,428 INFO L174 Difference]: Start difference. First operand has 716 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:58:29,442 INFO L199 Difference]: Finished difference. Result has 723 places, 456 transitions [2020-01-16 21:58:29,443 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=61690, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=62328, PETRI_PLACES=723, PETRI_TRANSITIONS=456} [2020-01-16 21:58:29,443 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 723 places, 456 transitions [2020-01-16 21:58:29,443 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 723 places, 456 transitions [2020-01-16 21:58:33,048 INFO L129 PetriNetUnfolder]: 119/993 cut-off events. [2020-01-16 21:58:33,048 INFO L130 PetriNetUnfolder]: For 2569555/2569769 co-relation queries the response was YES. [2020-01-16 21:58:33,099 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24538 conditions, 993 events. 119/993 cut-off events. For 2569555/2569769 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11077 event pairs. 2/973 useless extension candidates. Maximal degree in co-relation 23570. Up to 127 conditions per place. [2020-01-16 21:58:33,113 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 723 places, 0 of 456 transitions, 120 of 62328 flow. [2020-01-16 21:58:33,113 INFO L478 AbstractCegarLoop]: Abstraction has has 722 places, 456 transitions [2020-01-16 21:58:33,113 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:58:36,110 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:58:36,110 INFO L130 PetriNetUnfolder]: For 2570018/2570265 co-relation queries the response was YES. [2020-01-16 21:58:36,110 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:58:36,110 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:58:36,110 INFO L426 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:58:36,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:58:36,110 INFO L82 PathProgramCache]: Analyzing trace with hash -438895205, now seen corresponding path program 95 times [2020-01-16 21:58:36,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:58:36,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591579734] [2020-01-16 21:58:36,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:58:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:58:36,243 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 21:58:36,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591579734] [2020-01-16 21:58:36,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:58:36,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:58:36,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27359047] [2020-01-16 21:58:36,244 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:58:36,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:58:36,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:58:36,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:58:36,245 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:58:36,245 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 722 places, 456 transitions. Second operand 7 states. [2020-01-16 21:58:36,245 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:58:36,245 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:58:36,245 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:58:42,411 INFO L129 PetriNetUnfolder]: 119/992 cut-off events. [2020-01-16 21:58:42,411 INFO L130 PetriNetUnfolder]: For 2597459/2597871 co-relation queries the response was YES. [2020-01-16 21:58:42,454 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24794 conditions, 992 events. 119/992 cut-off events. For 2597459/2597871 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10987 event pairs. 1/981 useless extension candidates. Maximal degree in co-relation 23818. Up to 165 conditions per place. [2020-01-16 21:58:42,462 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:58:42,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:58:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:58:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:58:42,463 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:58:42,463 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:58:42,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:58:42,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:58:42,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:58:42,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:58:42,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:58:42,464 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:58:42,464 INFO L174 Difference]: Start difference. First operand has 722 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:58:42,479 INFO L199 Difference]: Finished difference. Result has 729 places, 456 transitions [2020-01-16 21:58:42,479 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=62208, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=62846, PETRI_PLACES=729, PETRI_TRANSITIONS=456} [2020-01-16 21:58:42,479 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 729 places, 456 transitions [2020-01-16 21:58:42,480 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 729 places, 456 transitions [2020-01-16 21:58:46,341 INFO L129 PetriNetUnfolder]: 119/992 cut-off events. [2020-01-16 21:58:46,341 INFO L130 PetriNetUnfolder]: For 2617807/2618054 co-relation queries the response was YES. [2020-01-16 21:58:46,395 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24608 conditions, 992 events. 119/992 cut-off events. For 2617807/2618054 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11048 event pairs. 3/974 useless extension candidates. Maximal degree in co-relation 23632. Up to 127 conditions per place. [2020-01-16 21:58:46,409 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 729 places, 0 of 456 transitions, 120 of 62846 flow. [2020-01-16 21:58:46,409 INFO L478 AbstractCegarLoop]: Abstraction has has 728 places, 456 transitions [2020-01-16 21:58:46,410 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:58:49,731 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:58:49,731 INFO L130 PetriNetUnfolder]: For 2617807/2618054 co-relation queries the response was YES. [2020-01-16 21:58:49,731 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:58:49,731 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:58:49,731 INFO L426 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:58:49,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:58:49,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2102157031, now seen corresponding path program 96 times [2020-01-16 21:58:49,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:58:49,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407375386] [2020-01-16 21:58:49,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:58:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:58:49,873 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 21:58:49,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407375386] [2020-01-16 21:58:49,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:58:49,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:58:49,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647593092] [2020-01-16 21:58:49,875 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:58:49,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:58:49,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:58:49,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:58:49,875 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:58:49,875 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 728 places, 456 transitions. Second operand 7 states. [2020-01-16 21:58:49,875 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:58:49,876 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:58:49,876 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:58:55,870 INFO L129 PetriNetUnfolder]: 119/991 cut-off events. [2020-01-16 21:58:55,870 INFO L130 PetriNetUnfolder]: For 2645502/2645914 co-relation queries the response was YES. [2020-01-16 21:58:55,918 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24862 conditions, 991 events. 119/991 cut-off events. For 2645502/2645914 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10972 event pairs. 1/980 useless extension candidates. Maximal degree in co-relation 23878. Up to 165 conditions per place. [2020-01-16 21:58:55,926 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:58:55,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:58:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:58:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:58:55,927 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:58:55,927 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:58:55,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:58:55,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:58:55,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:58:55,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:58:55,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:58:55,928 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:58:55,929 INFO L174 Difference]: Start difference. First operand has 728 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:58:55,952 INFO L199 Difference]: Finished difference. Result has 735 places, 456 transitions [2020-01-16 21:58:55,952 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=62726, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=63364, PETRI_PLACES=735, PETRI_TRANSITIONS=456} [2020-01-16 21:58:55,953 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 735 places, 456 transitions [2020-01-16 21:58:55,953 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 735 places, 456 transitions [2020-01-16 21:58:59,786 INFO L129 PetriNetUnfolder]: 119/991 cut-off events. [2020-01-16 21:58:59,786 INFO L130 PetriNetUnfolder]: For 2665978/2666225 co-relation queries the response was YES. [2020-01-16 21:58:59,830 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24676 conditions, 991 events. 119/991 cut-off events. For 2665978/2666225 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11056 event pairs. 3/973 useless extension candidates. Maximal degree in co-relation 23693. Up to 127 conditions per place. [2020-01-16 21:58:59,843 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 735 places, 0 of 456 transitions, 120 of 63364 flow. [2020-01-16 21:58:59,844 INFO L478 AbstractCegarLoop]: Abstraction has has 734 places, 456 transitions [2020-01-16 21:58:59,844 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:59:03,271 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:59:03,271 INFO L130 PetriNetUnfolder]: For 2665978/2666225 co-relation queries the response was YES. [2020-01-16 21:59:03,271 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:59:03,272 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:59:03,272 INFO L426 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:59:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:59:03,272 INFO L82 PathProgramCache]: Analyzing trace with hash 711137929, now seen corresponding path program 97 times [2020-01-16 21:59:03,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:59:03,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233158845] [2020-01-16 21:59:03,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:59:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:59:03,445 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 21:59:03,445 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233158845] [2020-01-16 21:59:03,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:59:03,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:59:03,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035325221] [2020-01-16 21:59:03,446 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:59:03,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:59:03,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:59:03,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:59:03,447 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:59:03,447 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 734 places, 456 transitions. Second operand 7 states. [2020-01-16 21:59:03,447 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:59:03,447 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:59:03,448 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:59:09,558 INFO L129 PetriNetUnfolder]: 119/990 cut-off events. [2020-01-16 21:59:09,558 INFO L130 PetriNetUnfolder]: For 2694354/2694892 co-relation queries the response was YES. [2020-01-16 21:59:09,608 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24928 conditions, 990 events. 119/990 cut-off events. For 2694354/2694892 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10938 event pairs. 12/989 useless extension candidates. Maximal degree in co-relation 23937. Up to 166 conditions per place. [2020-01-16 21:59:09,617 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:59:09,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:59:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:59:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:59:09,618 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:59:09,618 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:59:09,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:59:09,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:59:09,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:59:09,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:59:09,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:59:09,619 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:59:09,619 INFO L174 Difference]: Start difference. First operand has 734 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:59:09,635 INFO L199 Difference]: Finished difference. Result has 741 places, 456 transitions [2020-01-16 21:59:09,636 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=63244, PETRI_DIFFERENCE_MINUEND_PLACES=734, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=63882, PETRI_PLACES=741, PETRI_TRANSITIONS=456} [2020-01-16 21:59:09,636 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 741 places, 456 transitions [2020-01-16 21:59:09,636 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 741 places, 456 transitions [2020-01-16 21:59:13,796 INFO L129 PetriNetUnfolder]: 119/990 cut-off events. [2020-01-16 21:59:13,797 INFO L130 PetriNetUnfolder]: For 2714488/2714735 co-relation queries the response was YES. [2020-01-16 21:59:13,846 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24742 conditions, 990 events. 119/990 cut-off events. For 2714488/2714735 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11060 event pairs. 3/972 useless extension candidates. Maximal degree in co-relation 23754. Up to 127 conditions per place. [2020-01-16 21:59:13,860 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 741 places, 0 of 456 transitions, 120 of 63882 flow. [2020-01-16 21:59:13,860 INFO L478 AbstractCegarLoop]: Abstraction has has 740 places, 456 transitions [2020-01-16 21:59:13,860 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:59:16,985 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:59:16,985 INFO L130 PetriNetUnfolder]: For 2712935/2713059 co-relation queries the response was YES. [2020-01-16 21:59:16,986 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:59:16,986 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:59:16,986 INFO L426 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:59:16,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:59:16,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1878754855, now seen corresponding path program 98 times [2020-01-16 21:59:16,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:59:16,987 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174279381] [2020-01-16 21:59:16,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:59:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:59:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:59:17,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174279381] [2020-01-16 21:59:17,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:59:17,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:59:17,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523870390] [2020-01-16 21:59:17,115 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:59:17,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:59:17,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:59:17,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:59:17,116 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:59:17,116 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 740 places, 456 transitions. Second operand 7 states. [2020-01-16 21:59:17,116 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:59:17,116 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:59:17,117 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:59:23,436 INFO L129 PetriNetUnfolder]: 119/989 cut-off events. [2020-01-16 21:59:23,436 INFO L130 PetriNetUnfolder]: For 2745673/2746657 co-relation queries the response was YES. [2020-01-16 21:59:23,480 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24992 conditions, 989 events. 119/989 cut-off events. For 2745673/2746657 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10953 event pairs. 27/1002 useless extension candidates. Maximal degree in co-relation 23996. Up to 168 conditions per place. [2020-01-16 21:59:23,488 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 21:59:23,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:59:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:59:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:59:23,489 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:59:23,490 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:59:23,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:59:23,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:59:23,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:59:23,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:59:23,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:59:23,491 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:59:23,491 INFO L174 Difference]: Start difference. First operand has 740 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:59:23,508 INFO L199 Difference]: Finished difference. Result has 747 places, 456 transitions [2020-01-16 21:59:23,509 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=63762, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=64400, PETRI_PLACES=747, PETRI_TRANSITIONS=456} [2020-01-16 21:59:23,509 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 747 places, 456 transitions [2020-01-16 21:59:23,509 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 747 places, 456 transitions [2020-01-16 21:59:27,406 INFO L129 PetriNetUnfolder]: 119/989 cut-off events. [2020-01-16 21:59:27,406 INFO L130 PetriNetUnfolder]: For 2761777/2761901 co-relation queries the response was YES. [2020-01-16 21:59:27,460 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24806 conditions, 989 events. 119/989 cut-off events. For 2761777/2761901 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11062 event pairs. 2/971 useless extension candidates. Maximal degree in co-relation 23811. Up to 127 conditions per place. [2020-01-16 21:59:27,475 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 747 places, 0 of 456 transitions, 120 of 64400 flow. [2020-01-16 21:59:27,475 INFO L478 AbstractCegarLoop]: Abstraction has has 746 places, 456 transitions [2020-01-16 21:59:27,475 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:59:30,895 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:59:30,895 INFO L130 PetriNetUnfolder]: For 2762490/2762644 co-relation queries the response was YES. [2020-01-16 21:59:30,895 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:59:30,895 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:59:30,895 INFO L426 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:59:30,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:59:30,895 INFO L82 PathProgramCache]: Analyzing trace with hash 255734643, now seen corresponding path program 99 times [2020-01-16 21:59:30,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:59:30,896 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239095975] [2020-01-16 21:59:30,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:59:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:59:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:59:31,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239095975] [2020-01-16 21:59:31,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:59:31,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:59:31,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638336374] [2020-01-16 21:59:31,036 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:59:31,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:59:31,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:59:31,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:59:31,037 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:59:31,037 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 456 transitions. Second operand 7 states. [2020-01-16 21:59:31,037 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:59:31,038 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:59:31,038 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:59:37,000 INFO L129 PetriNetUnfolder]: 119/988 cut-off events. [2020-01-16 21:59:37,000 INFO L130 PetriNetUnfolder]: For 2794749/2795738 co-relation queries the response was YES. [2020-01-16 21:59:37,050 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25054 conditions, 988 events. 119/988 cut-off events. For 2794749/2795738 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10928 event pairs. 16/990 useless extension candidates. Maximal degree in co-relation 24051. Up to 164 conditions per place. [2020-01-16 21:59:37,058 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:59:37,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:59:37,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:59:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:59:37,059 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:59:37,059 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:59:37,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:59:37,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:59:37,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:59:37,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:59:37,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:59:37,061 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:59:37,061 INFO L174 Difference]: Start difference. First operand has 746 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:59:37,077 INFO L199 Difference]: Finished difference. Result has 753 places, 456 transitions [2020-01-16 21:59:37,077 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=64280, PETRI_DIFFERENCE_MINUEND_PLACES=746, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=64918, PETRI_PLACES=753, PETRI_TRANSITIONS=456} [2020-01-16 21:59:37,077 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 753 places, 456 transitions [2020-01-16 21:59:37,077 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 753 places, 456 transitions [2020-01-16 21:59:40,656 INFO L129 PetriNetUnfolder]: 119/988 cut-off events. [2020-01-16 21:59:40,656 INFO L130 PetriNetUnfolder]: For 2811723/2811874 co-relation queries the response was YES. [2020-01-16 21:59:40,703 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24868 conditions, 988 events. 119/988 cut-off events. For 2811723/2811874 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11052 event pairs. 1/968 useless extension candidates. Maximal degree in co-relation 23866. Up to 127 conditions per place. [2020-01-16 21:59:40,717 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 753 places, 0 of 456 transitions, 120 of 64918 flow. [2020-01-16 21:59:40,717 INFO L478 AbstractCegarLoop]: Abstraction has has 752 places, 456 transitions [2020-01-16 21:59:40,718 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:59:44,225 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:59:44,225 INFO L130 PetriNetUnfolder]: For 2811723/2811874 co-relation queries the response was YES. [2020-01-16 21:59:44,225 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:59:44,225 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:59:44,225 INFO L426 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:59:44,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:59:44,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1142067553, now seen corresponding path program 100 times [2020-01-16 21:59:44,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:59:44,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123767080] [2020-01-16 21:59:44,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:59:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:59:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:59:44,360 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123767080] [2020-01-16 21:59:44,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:59:44,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:59:44,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594800322] [2020-01-16 21:59:44,361 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:59:44,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:59:44,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:59:44,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:59:44,362 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:59:44,362 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 456 transitions. Second operand 7 states. [2020-01-16 21:59:44,362 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:59:44,362 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:59:44,362 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:59:50,485 INFO L129 PetriNetUnfolder]: 119/987 cut-off events. [2020-01-16 21:59:50,485 INFO L130 PetriNetUnfolder]: For 2843666/2844459 co-relation queries the response was YES. [2020-01-16 21:59:50,538 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25114 conditions, 987 events. 119/987 cut-off events. For 2843666/2844459 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10907 event pairs. 22/996 useless extension candidates. Maximal degree in co-relation 24142. Up to 164 conditions per place. [2020-01-16 21:59:50,546 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 21:59:50,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:59:50,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:59:50,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:59:50,547 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:59:50,547 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:59:50,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:59:50,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:59:50,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:59:50,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:59:50,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:59:50,548 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:59:50,548 INFO L174 Difference]: Start difference. First operand has 752 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:59:50,564 INFO L199 Difference]: Finished difference. Result has 759 places, 456 transitions [2020-01-16 21:59:50,564 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=64798, PETRI_DIFFERENCE_MINUEND_PLACES=752, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=65436, PETRI_PLACES=759, PETRI_TRANSITIONS=456} [2020-01-16 21:59:50,564 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 759 places, 456 transitions [2020-01-16 21:59:50,564 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 759 places, 456 transitions [2020-01-16 21:59:54,277 INFO L129 PetriNetUnfolder]: 119/987 cut-off events. [2020-01-16 21:59:54,277 INFO L130 PetriNetUnfolder]: For 2861477/2861632 co-relation queries the response was YES. [2020-01-16 21:59:54,331 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24928 conditions, 987 events. 119/987 cut-off events. For 2861477/2861632 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10989 event pairs. 1/969 useless extension candidates. Maximal degree in co-relation 23960. Up to 127 conditions per place. [2020-01-16 21:59:54,345 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 759 places, 0 of 456 transitions, 120 of 65436 flow. [2020-01-16 21:59:54,345 INFO L478 AbstractCegarLoop]: Abstraction has has 758 places, 456 transitions [2020-01-16 21:59:54,345 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:59:57,652 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:59:57,653 INFO L130 PetriNetUnfolder]: For 2861477/2861632 co-relation queries the response was YES. [2020-01-16 21:59:57,653 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:59:57,653 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:59:57,653 INFO L426 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:59:57,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:59:57,653 INFO L82 PathProgramCache]: Analyzing trace with hash -886030621, now seen corresponding path program 101 times [2020-01-16 21:59:57,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:59:57,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681893625] [2020-01-16 21:59:57,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:59:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:59:57,878 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 21:59:57,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681893625] [2020-01-16 21:59:57,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:59:57,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:59:57,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022280936] [2020-01-16 21:59:57,879 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:59:57,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:59:57,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:59:57,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:59:57,880 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:59:57,880 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 456 transitions. Second operand 7 states. [2020-01-16 21:59:57,881 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:59:57,881 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:59:57,881 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 22:00:05,165 INFO L129 PetriNetUnfolder]: 119/986 cut-off events. [2020-01-16 22:00:05,165 INFO L130 PetriNetUnfolder]: For 2893588/2894388 co-relation queries the response was YES. [2020-01-16 22:00:05,225 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25172 conditions, 986 events. 119/986 cut-off events. For 2893588/2894388 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10908 event pairs. 2/975 useless extension candidates. Maximal degree in co-relation 24196. Up to 164 conditions per place. [2020-01-16 22:00:05,235 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 22:00:05,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 22:00:05,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 22:00:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 22:00:05,236 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 22:00:05,236 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 22:00:05,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 22:00:05,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 22:00:05,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 22:00:05,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 22:00:05,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 22:00:05,237 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 22:00:05,237 INFO L174 Difference]: Start difference. First operand has 758 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 22:00:05,257 INFO L199 Difference]: Finished difference. Result has 765 places, 456 transitions [2020-01-16 22:00:05,257 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=65316, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=65954, PETRI_PLACES=765, PETRI_TRANSITIONS=456} [2020-01-16 22:00:05,258 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 765 places, 456 transitions [2020-01-16 22:00:05,258 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 765 places, 456 transitions [2020-01-16 22:00:09,108 INFO L129 PetriNetUnfolder]: 119/986 cut-off events. [2020-01-16 22:00:09,108 INFO L130 PetriNetUnfolder]: For 2911515/2911670 co-relation queries the response was YES. [2020-01-16 22:00:09,153 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24986 conditions, 986 events. 119/986 cut-off events. For 2911515/2911670 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11013 event pairs. 1/968 useless extension candidates. Maximal degree in co-relation 24012. Up to 127 conditions per place. [2020-01-16 22:00:09,167 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 765 places, 0 of 456 transitions, 120 of 65954 flow. [2020-01-16 22:00:09,168 INFO L478 AbstractCegarLoop]: Abstraction has has 764 places, 456 transitions [2020-01-16 22:00:09,168 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 22:00:12,716 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 22:00:12,717 INFO L130 PetriNetUnfolder]: For 2911515/2911670 co-relation queries the response was YES. [2020-01-16 22:00:12,717 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 22:00:12,717 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 22:00:12,717 INFO L426 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 22:00:12,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 22:00:12,717 INFO L82 PathProgramCache]: Analyzing trace with hash -510141499, now seen corresponding path program 102 times [2020-01-16 22:00:12,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 22:00:12,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595923173] [2020-01-16 22:00:12,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 22:00:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 22:00:12,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 22:00:12,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595923173] [2020-01-16 22:00:12,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 22:00:12,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 22:00:12,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154685409] [2020-01-16 22:00:12,983 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 22:00:12,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 22:00:12,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 22:00:12,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 22:00:12,984 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 22:00:12,984 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 764 places, 456 transitions. Second operand 7 states. [2020-01-16 22:00:12,985 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 22:00:12,985 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 22:00:12,985 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 22:00:19,084 INFO L129 PetriNetUnfolder]: 119/985 cut-off events. [2020-01-16 22:00:19,084 INFO L130 PetriNetUnfolder]: For 2943761/2944561 co-relation queries the response was YES. [2020-01-16 22:00:19,136 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25228 conditions, 985 events. 119/985 cut-off events. For 2943761/2944561 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10886 event pairs. 24/996 useless extension candidates. Maximal degree in co-relation 24246. Up to 165 conditions per place. [2020-01-16 22:00:19,144 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 22:00:19,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 22:00:19,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 22:00:19,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 22:00:19,145 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 22:00:19,145 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 22:00:19,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 22:00:19,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 22:00:19,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 22:00:19,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 22:00:19,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 22:00:19,146 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 22:00:19,146 INFO L174 Difference]: Start difference. First operand has 764 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 22:00:19,161 INFO L199 Difference]: Finished difference. Result has 771 places, 456 transitions [2020-01-16 22:00:19,162 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=65834, PETRI_DIFFERENCE_MINUEND_PLACES=764, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=66472, PETRI_PLACES=771, PETRI_TRANSITIONS=456} [2020-01-16 22:00:19,162 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 771 places, 456 transitions [2020-01-16 22:00:19,162 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 771 places, 456 transitions [2020-01-16 22:00:22,798 INFO L129 PetriNetUnfolder]: 119/985 cut-off events. [2020-01-16 22:00:22,798 INFO L130 PetriNetUnfolder]: For 2961816/2961975 co-relation queries the response was YES. [2020-01-16 22:00:22,852 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25042 conditions, 985 events. 119/985 cut-off events. For 2961816/2961975 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10973 event pairs. 1/967 useless extension candidates. Maximal degree in co-relation 24066. Up to 127 conditions per place. [2020-01-16 22:00:22,866 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 771 places, 0 of 456 transitions, 120 of 66472 flow. [2020-01-16 22:00:22,866 INFO L478 AbstractCegarLoop]: Abstraction has has 770 places, 456 transitions [2020-01-16 22:00:22,866 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 22:00:26,154 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 22:00:26,155 INFO L130 PetriNetUnfolder]: For 2961113/2961263 co-relation queries the response was YES. [2020-01-16 22:00:26,155 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 22:00:26,155 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 22:00:26,155 INFO L426 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 22:00:26,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 22:00:26,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1359846279, now seen corresponding path program 103 times [2020-01-16 22:00:26,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 22:00:26,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483542271] [2020-01-16 22:00:26,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 22:00:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 22:00:26,295 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 22:00:26,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483542271] [2020-01-16 22:00:26,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 22:00:26,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 22:00:26,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802869983] [2020-01-16 22:00:26,296 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 22:00:26,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 22:00:26,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 22:00:26,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 22:00:26,297 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 22:00:26,297 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 456 transitions. Second operand 7 states. [2020-01-16 22:00:26,297 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 22:00:26,297 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 22:00:26,297 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 22:00:32,508 INFO L129 PetriNetUnfolder]: 119/984 cut-off events. [2020-01-16 22:00:32,508 INFO L130 PetriNetUnfolder]: For 2993496/2994296 co-relation queries the response was YES. [2020-01-16 22:00:32,557 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25282 conditions, 984 events. 119/984 cut-off events. For 2993496/2994296 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10887 event pairs. 22/993 useless extension candidates. Maximal degree in co-relation 24298. Up to 163 conditions per place. [2020-01-16 22:00:32,566 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 22:00:32,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 22:00:32,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 22:00:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 22:00:32,567 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 22:00:32,567 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 22:00:32,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 22:00:32,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 22:00:32,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 22:00:32,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 22:00:32,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 22:00:32,567 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 22:00:32,568 INFO L174 Difference]: Start difference. First operand has 770 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 22:00:32,583 INFO L199 Difference]: Finished difference. Result has 777 places, 456 transitions [2020-01-16 22:00:32,583 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=66352, PETRI_DIFFERENCE_MINUEND_PLACES=770, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=66990, PETRI_PLACES=777, PETRI_TRANSITIONS=456} [2020-01-16 22:00:32,583 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 777 places, 456 transitions [2020-01-16 22:00:32,583 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 777 places, 456 transitions [2020-01-16 22:00:36,534 INFO L129 PetriNetUnfolder]: 119/984 cut-off events. [2020-01-16 22:00:36,534 INFO L130 PetriNetUnfolder]: For 3011837/3011990 co-relation queries the response was YES. [2020-01-16 22:00:36,579 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25096 conditions, 984 events. 119/984 cut-off events. For 3011837/3011990 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11007 event pairs. 1/965 useless extension candidates. Maximal degree in co-relation 24116. Up to 127 conditions per place. [2020-01-16 22:00:36,593 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 777 places, 0 of 456 transitions, 120 of 66990 flow. [2020-01-16 22:00:36,594 INFO L478 AbstractCegarLoop]: Abstraction has has 776 places, 456 transitions [2020-01-16 22:00:36,594 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 22:00:40,236 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 22:00:40,236 INFO L130 PetriNetUnfolder]: For 3012654/3012848 co-relation queries the response was YES. [2020-01-16 22:00:40,236 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 22:00:40,236 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 22:00:40,236 INFO L426 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 22:00:40,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 22:00:40,237 INFO L82 PathProgramCache]: Analyzing trace with hash 277427009, now seen corresponding path program 104 times [2020-01-16 22:00:40,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 22:00:40,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169766222] [2020-01-16 22:00:40,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 22:00:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 22:00:40,377 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 22:00:40,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169766222] [2020-01-16 22:00:40,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 22:00:40,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 22:00:40,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854058656] [2020-01-16 22:00:40,379 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 22:00:40,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 22:00:40,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 22:00:40,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 22:00:40,380 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 22:00:40,380 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 776 places, 456 transitions. Second operand 7 states. [2020-01-16 22:00:40,380 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 22:00:40,380 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 22:00:40,380 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 22:00:46,667 INFO L129 PetriNetUnfolder]: 119/983 cut-off events. [2020-01-16 22:00:46,668 INFO L130 PetriNetUnfolder]: For 3043383/3044122 co-relation queries the response was YES. [2020-01-16 22:00:46,721 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25334 conditions, 983 events. 119/983 cut-off events. For 3043383/3044122 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10892 event pairs. 33/1003 useless extension candidates. Maximal degree in co-relation 24346. Up to 163 conditions per place. [2020-01-16 22:00:46,730 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 22:00:46,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 22:00:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 22:00:46,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 22:00:46,731 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 22:00:46,731 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 22:00:46,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 22:00:46,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 22:00:46,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 22:00:46,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 22:00:46,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 22:00:46,731 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 22:00:46,732 INFO L174 Difference]: Start difference. First operand has 776 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 22:00:46,747 INFO L199 Difference]: Finished difference. Result has 783 places, 456 transitions [2020-01-16 22:00:46,747 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=66870, PETRI_DIFFERENCE_MINUEND_PLACES=776, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=67508, PETRI_PLACES=783, PETRI_TRANSITIONS=456} [2020-01-16 22:00:46,748 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 783 places, 456 transitions [2020-01-16 22:00:46,748 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 783 places, 456 transitions Received shutdown request... [2020-01-16 22:00:50,085 WARN L543 AbstractCegarLoop]: Verification canceled [2020-01-16 22:00:50,088 WARN L227 ceAbstractionStarter]: Timeout [2020-01-16 22:00:50,088 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 10:00:50 BasicIcfg [2020-01-16 22:00:50,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 22:00:50,090 INFO L168 Benchmark]: Toolchain (without parser) took 834763.53 ms. Allocated memory was 137.9 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 119.9 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2020-01-16 22:00:50,091 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-01-16 22:00:50,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.97 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 118.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-01-16 22:00:50,091 INFO L168 Benchmark]: Boogie Preprocessor took 20.08 ms. Allocated memory is still 137.9 MB. Free memory was 118.0 MB in the beginning and 116.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 22:00:50,092 INFO L168 Benchmark]: RCFGBuilder took 265.79 ms. Allocated memory is still 137.9 MB. Free memory was 116.9 MB in the beginning and 105.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-01-16 22:00:50,092 INFO L168 Benchmark]: TraceAbstraction took 834437.05 ms. Allocated memory was 137.9 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 105.1 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2020-01-16 22:00:50,094 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 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.97 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 118.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.08 ms. Allocated memory is still 137.9 MB. Free memory was 118.0 MB in the beginning and 116.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.79 ms. Allocated memory is still 137.9 MB. Free memory was 116.9 MB in the beginning and 105.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 834437.05 ms. Allocated memory was 137.9 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 105.1 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.2s, 44 ProgramPointsBefore, 37 ProgramPointsAfterwards, 48 TransitionsBefore, 42 TransitionsAfterwards, 440 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 120 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 130 CheckedPairsTotal, 6 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 23]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 23). Cancelled while RemoveUnreachable was analyzing net that has 783 and 456 transistions.,while PetriNetUnfolder was constructing finite prefix that currently has 23191 conditions, 955 events (113/954 cut-off events. For 2936299/2936493 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10850 event pairs. 1/956 useless extension candidates. Maximal degree in co-relation 22209. Up to 126 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 834.1s, OverallIterations: 108, TraceHistogramMax: 1, AutomataDifference: 386.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 1495 SDtfs, 1770 SDslu, 1101 SDs, 0 SdLazy, 3177 SolverSat, 577 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 740 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 628 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 19.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=776occurred in iteration=107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 240.9s AutomataMinimizationTime, 108 MinimizatonAttempts, 107 StatesRemovedByMinimization, 107 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 1728 NumberOfCodeBlocks, 1728 NumberOfCodeBlocksAsserted, 108 NumberOfCheckSat, 1620 ConstructedInterpolants, 0 QuantifiedInterpolants, 386070 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 108 InterpolantComputations, 108 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown