/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 21:18:30,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 21:18:30,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 21:18:30,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 21:18:30,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 21:18:30,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 21:18:30,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 21:18:30,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 21:18:30,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 21:18:30,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 21:18:30,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 21:18:30,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-01-16 21:18:30,781 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-01-16 21:18:30,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 21:18:30,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 21:18:30,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 21:18:30,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 21:18:30,809 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 21:18:30,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 21:18:30,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 21:18:30,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 21:18:30,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 21:18:30,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 21:18:30,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 21:18:30,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 21:18:30,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 21:18:30,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 21:18:30,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 21:18:30,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 21:18:30,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 21:18:30,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 21:18:30,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 21:18:30,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 21:18:30,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 21:18:30,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 21:18:30,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 21:18:30,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 21:18:30,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 21:18:30,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 21:18:30,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 21:18:30,815 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-01-16 21:18:30,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 21:18:31,103 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 21:18:31,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 21:18:31,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 21:18:31,121 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 21:18:31,121 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 21:18:31,122 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2020-01-16 21:18:31,122 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2020-01-16 21:18:31,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 21:18:31,155 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 21:18:31,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 21:18:31,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 21:18:31,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 21:18:31,172 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 09:18:31" (1/1) ... [2020-01-16 21:18:31,181 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 09:18:31" (1/1) ... [2020-01-16 21:18:31,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 21:18:31,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 21:18:31,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 21:18:31,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 21:18:31,201 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 09:18:31" (1/1) ... [2020-01-16 21:18:31,202 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 09:18:31" (1/1) ... [2020-01-16 21:18:31,202 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 09:18:31" (1/1) ... [2020-01-16 21:18:31,202 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 09:18:31" (1/1) ... [2020-01-16 21:18:31,206 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 09:18:31" (1/1) ... [2020-01-16 21:18:31,207 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 09:18:31" (1/1) ... [2020-01-16 21:18:31,208 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 09:18:31" (1/1) ... [2020-01-16 21:18:31,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 21:18:31,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 21:18:31,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 21:18:31,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 21:18:31,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 21:18:31,279 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 21:18:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 21:18:31,280 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 21:18:31,280 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 21:18:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 21:18:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 21:18:31,281 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 21:18:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 21:18:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 21:18:31,282 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 21:18:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 21:18:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 21:18:31,282 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 21:18:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 21:18:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 21:18:31,283 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 21:18:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 21:18:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 21:18:31,284 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 21:18:31,477 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 21:18:31,478 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 21:18:31,479 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 09:18:31 BoogieIcfgContainer [2020-01-16 21:18:31,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 21:18:31,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 21:18:31,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 21:18:31,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 21:18:31,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:31" (1/2) ... [2020-01-16 21:18:31,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c96025 and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 09:18:31, skipping insertion in model container [2020-01-16 21:18:31,485 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 09:18:31" (2/2) ... [2020-01-16 21:18:31,487 INFO L109 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2020-01-16 21:18:31,497 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 21:18:31,503 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 21:18:31,505 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 21:18:31,671 INFO L250 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-01-16 21:18:31,710 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 21:18:31,710 INFO L375 AbstractCegarLoop]: Hoare is false [2020-01-16 21:18:31,712 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 21:18:31,712 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 21:18:31,713 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 21:18:31,713 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 21:18:31,713 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 21:18:31,713 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 21:18:31,728 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 48 transitions [2020-01-16 21:18:31,730 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions [2020-01-16 21:18:31,813 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2020-01-16 21:18:31,814 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-01-16 21:18:31,824 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 21:18:31,832 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions [2020-01-16 21:18:31,878 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2020-01-16 21:18:31,879 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-01-16 21:18:31,884 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 21:18:31,888 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 440 [2020-01-16 21:18:31,889 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-01-16 21:18:31,984 INFO L206 etLargeBlockEncoding]: Checked pairs total: 130 [2020-01-16 21:18:31,984 INFO L214 etLargeBlockEncoding]: Total number of compositions: 6 [2020-01-16 21:18:31,984 INFO L162 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 260 [2020-01-16 21:18:32,027 INFO L129 PetriNetUnfolder]: 49/90 cut-off events. [2020-01-16 21:18:32,028 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-01-16 21:18:32,028 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:32,029 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:32,030 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 21:18:32,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:32,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1055068329, now seen corresponding path program 1 times [2020-01-16 21:18:32,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:32,046 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652912259] [2020-01-16 21:18:32,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:32,187 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652912259] [2020-01-16 21:18:32,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:32,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:32,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664048738] [2020-01-16 21:18:32,199 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:32,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:32,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:32,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:32,219 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 54 [2020-01-16 21:18:32,221 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 42 transitions. Second operand 3 states. [2020-01-16 21:18:32,221 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:32,221 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 54 [2020-01-16 21:18:32,223 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:32,299 INFO L129 PetriNetUnfolder]: 33/71 cut-off events. [2020-01-16 21:18:32,299 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2020-01-16 21:18:32,302 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 21:18:32,302 INFO L123 encePairwiseOnDemand]: 51/54 looper letters, 3 selfloop transitions, 3 changer transitions [2020-01-16 21:18:32,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:32,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2020-01-16 21:18:32,320 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2020-01-16 21:18:32,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2020-01-16 21:18:32,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2020-01-16 21:18:32,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:32,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2020-01-16 21:18:32,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:32,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:32,333 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:32,335 INFO L174 Difference]: Start difference. First operand has 37 places, 42 transitions. Second operand 3 states and 150 transitions. [2020-01-16 21:18:32,336 INFO L199 Difference]: Finished difference. Result has 39 places, 35 transitions [2020-01-16 21:18:32,339 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 21:18:32,340 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 39 places, 35 transitions [2020-01-16 21:18:32,341 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 39 places, 35 transitions [2020-01-16 21:18:32,360 INFO L129 PetriNetUnfolder]: 33/71 cut-off events. [2020-01-16 21:18:32,362 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2020-01-16 21:18:32,363 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 21:18:32,365 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 6 of 39 places, 0 of 35 transitions, 1 of 155 flow. [2020-01-16 21:18:32,368 INFO L478 AbstractCegarLoop]: Abstraction has has 33 places, 35 transitions [2020-01-16 21:18:32,369 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:32,386 INFO L129 PetriNetUnfolder]: 33/69 cut-off events. [2020-01-16 21:18:32,387 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2020-01-16 21:18:32,387 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:32,387 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:32,387 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 21:18:32,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:32,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1416035941, now seen corresponding path program 1 times [2020-01-16 21:18:32,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:32,390 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721880884] [2020-01-16 21:18:32,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:32,435 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 21:18:32,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721880884] [2020-01-16 21:18:32,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:32,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:32,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66603511] [2020-01-16 21:18:32,438 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:32,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:32,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:32,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:32,440 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 54 [2020-01-16 21:18:32,440 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 35 transitions. Second operand 3 states. [2020-01-16 21:18:32,441 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:32,441 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 54 [2020-01-16 21:18:32,441 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:32,470 INFO L129 PetriNetUnfolder]: 8/32 cut-off events. [2020-01-16 21:18:32,471 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2020-01-16 21:18:32,471 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 21:18:32,472 INFO L123 encePairwiseOnDemand]: 49/54 looper letters, 1 selfloop transitions, 5 changer transitions [2020-01-16 21:18:32,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:32,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2020-01-16 21:18:32,474 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2020-01-16 21:18:32,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2020-01-16 21:18:32,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2020-01-16 21:18:32,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:32,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2020-01-16 21:18:32,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:32,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:32,477 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:32,478 INFO L174 Difference]: Start difference. First operand has 33 places, 35 transitions. Second operand 3 states and 150 transitions. [2020-01-16 21:18:32,478 INFO L199 Difference]: Finished difference. Result has 35 places, 27 transitions [2020-01-16 21:18:32,478 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 21:18:32,479 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 35 places, 27 transitions [2020-01-16 21:18:32,479 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 35 places, 27 transitions [2020-01-16 21:18:32,484 INFO L129 PetriNetUnfolder]: 8/32 cut-off events. [2020-01-16 21:18:32,485 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-01-16 21:18:32,485 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 21:18:32,486 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 35 places, 0 of 27 transitions, 1 of 116 flow. [2020-01-16 21:18:32,486 INFO L478 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions [2020-01-16 21:18:32,486 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:32,491 INFO L129 PetriNetUnfolder]: 8/30 cut-off events. [2020-01-16 21:18:32,491 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-01-16 21:18:32,491 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:32,492 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:32,492 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 21:18:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:32,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1960451749, now seen corresponding path program 1 times [2020-01-16 21:18:32,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:32,493 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416334168] [2020-01-16 21:18:32,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:32,521 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 21:18:32,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416334168] [2020-01-16 21:18:32,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:32,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:32,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121440134] [2020-01-16 21:18:32,524 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:32,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:32,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:32,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:32,525 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 54 [2020-01-16 21:18:32,525 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions. Second operand 3 states. [2020-01-16 21:18:32,526 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:32,526 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 54 [2020-01-16 21:18:32,526 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:32,536 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2020-01-16 21:18:32,536 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-01-16 21:18:32,537 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 21:18:32,537 INFO L123 encePairwiseOnDemand]: 50/54 looper letters, 1 selfloop transitions, 4 changer transitions [2020-01-16 21:18:32,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2020-01-16 21:18:32,539 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9197530864197531 [2020-01-16 21:18:32,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2020-01-16 21:18:32,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2020-01-16 21:18:32,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:32,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2020-01-16 21:18:32,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:32,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:32,542 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:32,543 INFO L174 Difference]: Start difference. First operand has 34 places, 27 transitions. Second operand 3 states and 149 transitions. [2020-01-16 21:18:32,543 INFO L199 Difference]: Finished difference. Result has 36 places, 19 transitions [2020-01-16 21:18:32,543 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 21:18:32,544 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 36 places, 19 transitions [2020-01-16 21:18:32,544 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 36 places, 19 transitions [2020-01-16 21:18:32,547 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2020-01-16 21:18:32,548 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-01-16 21:18:32,548 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 21:18:32,549 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 36 places, 0 of 19 transitions, 1 of 77 flow. [2020-01-16 21:18:32,549 INFO L478 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions [2020-01-16 21:18:32,549 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:32,552 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2020-01-16 21:18:32,553 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-01-16 21:18:32,553 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:32,553 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:32,553 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 21:18:32,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:32,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1557269531, now seen corresponding path program 1 times [2020-01-16 21:18:32,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:32,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228979382] [2020-01-16 21:18:32,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:33,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228979382] [2020-01-16 21:18:33,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:33,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:33,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269546680] [2020-01-16 21:18:33,034 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:33,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:33,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:33,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:33,036 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:33,037 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions. Second operand 7 states. [2020-01-16 21:18:33,037 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:33,038 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:33,038 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:33,167 INFO L129 PetriNetUnfolder]: 71/196 cut-off events. [2020-01-16 21:18:33,167 INFO L130 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2020-01-16 21:18:33,169 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 21:18:33,169 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 15 selfloop transitions, 10 changer transitions [2020-01-16 21:18:33,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:33,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:33,174 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:33,174 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:33,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:33,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:33,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:33,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:33,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:33,178 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:33,179 INFO L174 Difference]: Start difference. First operand has 35 places, 19 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:33,179 INFO L199 Difference]: Finished difference. Result has 46 places, 27 transitions [2020-01-16 21:18:33,180 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 21:18:33,180 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 46 places, 27 transitions [2020-01-16 21:18:33,180 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 46 places, 27 transitions [2020-01-16 21:18:33,189 INFO L129 PetriNetUnfolder]: 7/52 cut-off events. [2020-01-16 21:18:33,190 INFO L130 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2020-01-16 21:18:33,191 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 21:18:33,191 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 46 places, 0 of 27 transitions, 0 of 135 flow. [2020-01-16 21:18:33,192 INFO L478 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions [2020-01-16 21:18:33,192 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:33,208 INFO L129 PetriNetUnfolder]: 7/47 cut-off events. [2020-01-16 21:18:33,209 INFO L130 PetriNetUnfolder]: For 41/42 co-relation queries the response was YES. [2020-01-16 21:18:33,209 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:33,209 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:33,209 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 21:18:33,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:33,210 INFO L82 PathProgramCache]: Analyzing trace with hash -288481185, now seen corresponding path program 2 times [2020-01-16 21:18:33,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:33,211 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953761395] [2020-01-16 21:18:33,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:33,441 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953761395] [2020-01-16 21:18:33,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:33,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:33,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508664587] [2020-01-16 21:18:33,443 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:33,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:33,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:33,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:33,446 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:33,448 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions. Second operand 7 states. [2020-01-16 21:18:33,448 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:33,449 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:33,449 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:33,621 INFO L129 PetriNetUnfolder]: 74/230 cut-off events. [2020-01-16 21:18:33,621 INFO L130 PetriNetUnfolder]: For 299/301 co-relation queries the response was YES. [2020-01-16 21:18:33,623 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 21:18:33,623 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 22 selfloop transitions, 19 changer transitions [2020-01-16 21:18:33,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:33,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:33,626 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:33,626 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:33,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:33,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:33,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:33,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:33,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:33,629 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:33,629 INFO L174 Difference]: Start difference. First operand has 46 places, 27 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:33,630 INFO L199 Difference]: Finished difference. Result has 57 places, 39 transitions [2020-01-16 21:18:33,630 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 21:18:33,631 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 57 places, 39 transitions [2020-01-16 21:18:33,631 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 39 transitions [2020-01-16 21:18:33,650 INFO L129 PetriNetUnfolder]: 18/114 cut-off events. [2020-01-16 21:18:33,650 INFO L130 PetriNetUnfolder]: For 225/231 co-relation queries the response was YES. [2020-01-16 21:18:33,652 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 21:18:33,652 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 57 places, 0 of 39 transitions, 0 of 279 flow. [2020-01-16 21:18:33,653 INFO L478 AbstractCegarLoop]: Abstraction has has 57 places, 39 transitions [2020-01-16 21:18:33,653 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:33,669 INFO L129 PetriNetUnfolder]: 18/104 cut-off events. [2020-01-16 21:18:33,670 INFO L130 PetriNetUnfolder]: For 224/229 co-relation queries the response was YES. [2020-01-16 21:18:33,670 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:33,670 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:33,670 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 21:18:33,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:33,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1612510339, now seen corresponding path program 3 times [2020-01-16 21:18:33,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:33,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960105540] [2020-01-16 21:18:33,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:33,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960105540] [2020-01-16 21:18:33,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:33,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:33,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499223782] [2020-01-16 21:18:33,887 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:33,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:33,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:33,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:33,889 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:33,890 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 39 transitions. Second operand 7 states. [2020-01-16 21:18:33,890 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:33,890 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:33,890 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:34,062 INFO L129 PetriNetUnfolder]: 75/242 cut-off events. [2020-01-16 21:18:34,062 INFO L130 PetriNetUnfolder]: For 717/727 co-relation queries the response was YES. [2020-01-16 21:18:34,065 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 21:18:34,065 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 22 selfloop transitions, 22 changer transitions [2020-01-16 21:18:34,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:34,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:34,068 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:34,068 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:34,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:34,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:34,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:34,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:34,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:34,080 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:34,080 INFO L174 Difference]: Start difference. First operand has 57 places, 39 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:34,081 INFO L199 Difference]: Finished difference. Result has 66 places, 43 transitions [2020-01-16 21:18:34,081 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 21:18:34,081 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 66 places, 43 transitions [2020-01-16 21:18:34,081 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 66 places, 43 transitions [2020-01-16 21:18:34,104 INFO L129 PetriNetUnfolder]: 22/135 cut-off events. [2020-01-16 21:18:34,104 INFO L130 PetriNetUnfolder]: For 452/457 co-relation queries the response was YES. [2020-01-16 21:18:34,105 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 21:18:34,106 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 66 places, 0 of 43 transitions, 14 of 387 flow. [2020-01-16 21:18:34,106 INFO L478 AbstractCegarLoop]: Abstraction has has 65 places, 43 transitions [2020-01-16 21:18:34,107 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:34,127 INFO L129 PetriNetUnfolder]: 22/124 cut-off events. [2020-01-16 21:18:34,127 INFO L130 PetriNetUnfolder]: For 452/457 co-relation queries the response was YES. [2020-01-16 21:18:34,127 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:34,127 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:34,127 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 21:18:34,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:34,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1661404831, now seen corresponding path program 4 times [2020-01-16 21:18:34,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:34,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287690270] [2020-01-16 21:18:34,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:34,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:34,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287690270] [2020-01-16 21:18:34,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:34,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:34,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088891529] [2020-01-16 21:18:34,303 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:34,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:34,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:34,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:34,305 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:34,305 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 43 transitions. Second operand 7 states. [2020-01-16 21:18:34,305 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:34,305 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:34,305 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:34,505 INFO L129 PetriNetUnfolder]: 92/345 cut-off events. [2020-01-16 21:18:34,505 INFO L130 PetriNetUnfolder]: For 1520/1531 co-relation queries the response was YES. [2020-01-16 21:18:34,509 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 21:18:34,510 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 22 selfloop transitions, 34 changer transitions [2020-01-16 21:18:34,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:34,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:34,513 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:34,514 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:34,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:34,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:34,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:34,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:34,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:34,518 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:34,518 INFO L174 Difference]: Start difference. First operand has 65 places, 43 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:34,519 INFO L199 Difference]: Finished difference. Result has 76 places, 57 transitions [2020-01-16 21:18:34,519 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 21:18:34,520 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 76 places, 57 transitions [2020-01-16 21:18:34,520 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 57 transitions [2020-01-16 21:18:34,579 INFO L129 PetriNetUnfolder]: 39/228 cut-off events. [2020-01-16 21:18:34,579 INFO L130 PetriNetUnfolder]: For 1321/1322 co-relation queries the response was YES. [2020-01-16 21:18:34,582 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 21:18:34,583 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 76 places, 0 of 57 transitions, 0 of 657 flow. [2020-01-16 21:18:34,583 INFO L478 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions [2020-01-16 21:18:34,583 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:34,640 INFO L129 PetriNetUnfolder]: 39/209 cut-off events. [2020-01-16 21:18:34,641 INFO L130 PetriNetUnfolder]: For 1321/1322 co-relation queries the response was YES. [2020-01-16 21:18:34,641 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:34,641 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:34,641 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 21:18:34,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:34,642 INFO L82 PathProgramCache]: Analyzing trace with hash 20275217, now seen corresponding path program 5 times [2020-01-16 21:18:34,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:34,643 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944508443] [2020-01-16 21:18:34,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:34,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944508443] [2020-01-16 21:18:34,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:34,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:34,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114995519] [2020-01-16 21:18:34,902 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:34,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:34,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:34,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:34,904 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:34,904 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions. Second operand 7 states. [2020-01-16 21:18:34,904 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:34,904 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:34,904 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:35,198 INFO L129 PetriNetUnfolder]: 109/487 cut-off events. [2020-01-16 21:18:35,198 INFO L130 PetriNetUnfolder]: For 3753/3791 co-relation queries the response was YES. [2020-01-16 21:18:35,205 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 21:18:35,206 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 30 selfloop transitions, 54 changer transitions [2020-01-16 21:18:35,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:35,209 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:35,210 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:35,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:35,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:35,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:35,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:35,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:35,214 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:35,214 INFO L174 Difference]: Start difference. First operand has 76 places, 57 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:35,217 INFO L199 Difference]: Finished difference. Result has 87 places, 81 transitions [2020-01-16 21:18:35,218 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 21:18:35,218 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 87 places, 81 transitions [2020-01-16 21:18:35,219 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 81 transitions [2020-01-16 21:18:35,353 INFO L129 PetriNetUnfolder]: 69/400 cut-off events. [2020-01-16 21:18:35,353 INFO L130 PetriNetUnfolder]: For 3729/3730 co-relation queries the response was YES. [2020-01-16 21:18:35,357 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 21:18:35,358 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 87 places, 0 of 81 transitions, 0 of 1231 flow. [2020-01-16 21:18:35,359 INFO L478 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions [2020-01-16 21:18:35,359 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:35,445 INFO L129 PetriNetUnfolder]: 69/364 cut-off events. [2020-01-16 21:18:35,446 INFO L130 PetriNetUnfolder]: For 3737/3738 co-relation queries the response was YES. [2020-01-16 21:18:35,446 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:35,446 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:35,446 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 21:18:35,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:35,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1866192545, now seen corresponding path program 6 times [2020-01-16 21:18:35,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:35,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704498558] [2020-01-16 21:18:35,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:35,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704498558] [2020-01-16 21:18:35,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:35,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:35,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416335752] [2020-01-16 21:18:35,643 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:35,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:35,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:35,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:35,649 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:35,652 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions. Second operand 7 states. [2020-01-16 21:18:35,652 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:35,653 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:35,653 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:36,102 INFO L129 PetriNetUnfolder]: 137/694 cut-off events. [2020-01-16 21:18:36,102 INFO L130 PetriNetUnfolder]: For 7754/7801 co-relation queries the response was YES. [2020-01-16 21:18:36,115 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 21:18:36,116 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 31 selfloop transitions, 80 changer transitions [2020-01-16 21:18:36,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:36,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:36,120 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:36,120 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:36,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:36,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:36,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:36,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:36,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:36,143 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:36,143 INFO L174 Difference]: Start difference. First operand has 87 places, 81 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:36,145 INFO L199 Difference]: Finished difference. Result has 98 places, 110 transitions [2020-01-16 21:18:36,145 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 21:18:36,146 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 98 places, 110 transitions [2020-01-16 21:18:36,146 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 98 places, 110 transitions [2020-01-16 21:18:36,398 INFO L129 PetriNetUnfolder]: 109/628 cut-off events. [2020-01-16 21:18:36,398 INFO L130 PetriNetUnfolder]: For 8419/8438 co-relation queries the response was YES. [2020-01-16 21:18:36,405 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 21:18:36,407 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 98 places, 0 of 110 transitions, 0 of 2076 flow. [2020-01-16 21:18:36,407 INFO L478 AbstractCegarLoop]: Abstraction has has 98 places, 110 transitions [2020-01-16 21:18:36,407 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:36,589 INFO L129 PetriNetUnfolder]: 109/572 cut-off events. [2020-01-16 21:18:36,589 INFO L130 PetriNetUnfolder]: For 8407/8426 co-relation queries the response was YES. [2020-01-16 21:18:36,590 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:36,590 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:36,590 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 21:18:36,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:36,590 INFO L82 PathProgramCache]: Analyzing trace with hash -476888601, now seen corresponding path program 7 times [2020-01-16 21:18:36,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:36,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025240749] [2020-01-16 21:18:36,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:36,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025240749] [2020-01-16 21:18:36,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:36,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:36,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622874871] [2020-01-16 21:18:36,756 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:36,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:36,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:36,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:36,758 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:36,758 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 110 transitions. Second operand 7 states. [2020-01-16 21:18:36,758 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:36,759 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:36,759 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:37,290 INFO L129 PetriNetUnfolder]: 142/712 cut-off events. [2020-01-16 21:18:37,291 INFO L130 PetriNetUnfolder]: For 10544/10618 co-relation queries the response was YES. [2020-01-16 21:18:37,300 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 21:18:37,302 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 38 selfloop transitions, 78 changer transitions [2020-01-16 21:18:37,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:37,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:37,304 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:37,305 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:37,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:37,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:37,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:37,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:37,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:37,308 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:37,308 INFO L174 Difference]: Start difference. First operand has 98 places, 110 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:37,310 INFO L199 Difference]: Finished difference. Result has 108 places, 113 transitions [2020-01-16 21:18:37,310 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 21:18:37,311 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 108 places, 113 transitions [2020-01-16 21:18:37,311 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 108 places, 113 transitions [2020-01-16 21:18:37,555 INFO L129 PetriNetUnfolder]: 109/627 cut-off events. [2020-01-16 21:18:37,555 INFO L130 PetriNetUnfolder]: For 11087/11112 co-relation queries the response was YES. [2020-01-16 21:18:37,564 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 21:18:37,567 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 108 places, 0 of 113 transitions, 62 of 2403 flow. [2020-01-16 21:18:37,567 INFO L478 AbstractCegarLoop]: Abstraction has has 107 places, 113 transitions [2020-01-16 21:18:37,567 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:37,832 INFO L129 PetriNetUnfolder]: 109/572 cut-off events. [2020-01-16 21:18:37,833 INFO L130 PetriNetUnfolder]: For 11093/11118 co-relation queries the response was YES. [2020-01-16 21:18:37,833 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:37,833 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:37,833 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 21:18:37,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:37,834 INFO L82 PathProgramCache]: Analyzing trace with hash -826706393, now seen corresponding path program 8 times [2020-01-16 21:18:37,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:37,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51227111] [2020-01-16 21:18:37,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:38,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51227111] [2020-01-16 21:18:38,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:38,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:38,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446077769] [2020-01-16 21:18:38,034 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:38,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:38,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:38,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:38,035 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:38,036 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 113 transitions. Second operand 7 states. [2020-01-16 21:18:38,036 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:38,036 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:38,036 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:38,488 INFO L129 PetriNetUnfolder]: 138/701 cut-off events. [2020-01-16 21:18:38,488 INFO L130 PetriNetUnfolder]: For 13786/13879 co-relation queries the response was YES. [2020-01-16 21:18:38,496 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 21:18:38,498 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 29 selfloop transitions, 87 changer transitions [2020-01-16 21:18:38,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:38,500 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:38,500 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:38,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:38,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:38,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:38,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:38,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:38,504 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:38,504 INFO L174 Difference]: Start difference. First operand has 107 places, 113 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:38,506 INFO L199 Difference]: Finished difference. Result has 116 places, 118 transitions [2020-01-16 21:18:38,506 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 21:18:38,506 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 116 places, 118 transitions [2020-01-16 21:18:38,506 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 116 places, 118 transitions [2020-01-16 21:18:38,730 INFO L129 PetriNetUnfolder]: 111/638 cut-off events. [2020-01-16 21:18:38,730 INFO L130 PetriNetUnfolder]: For 14645/14680 co-relation queries the response was YES. [2020-01-16 21:18:38,739 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 21:18:38,741 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 116 places, 0 of 118 transitions, 63 of 2712 flow. [2020-01-16 21:18:38,742 INFO L478 AbstractCegarLoop]: Abstraction has has 115 places, 118 transitions [2020-01-16 21:18:38,742 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:38,910 INFO L129 PetriNetUnfolder]: 111/583 cut-off events. [2020-01-16 21:18:38,910 INFO L130 PetriNetUnfolder]: For 14549/14585 co-relation queries the response was YES. [2020-01-16 21:18:38,910 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:38,910 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:38,910 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 21:18:38,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:38,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1824743653, now seen corresponding path program 9 times [2020-01-16 21:18:38,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:38,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438914433] [2020-01-16 21:18:38,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:39,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:39,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438914433] [2020-01-16 21:18:39,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:39,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:39,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752186383] [2020-01-16 21:18:39,087 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:39,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:39,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:39,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:39,088 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:39,089 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 118 transitions. Second operand 7 states. [2020-01-16 21:18:39,089 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:39,089 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:39,089 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:39,588 INFO L129 PetriNetUnfolder]: 140/707 cut-off events. [2020-01-16 21:18:39,589 INFO L130 PetriNetUnfolder]: For 17020/17110 co-relation queries the response was YES. [2020-01-16 21:18:39,599 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 21:18:39,600 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 36 selfloop transitions, 86 changer transitions [2020-01-16 21:18:39,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:39,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:39,603 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:39,603 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:39,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:39,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:39,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:39,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:39,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:39,606 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:39,606 INFO L174 Difference]: Start difference. First operand has 115 places, 118 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:39,609 INFO L199 Difference]: Finished difference. Result has 124 places, 120 transitions [2020-01-16 21:18:39,610 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 21:18:39,610 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 124 places, 120 transitions [2020-01-16 21:18:39,610 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 124 places, 120 transitions [2020-01-16 21:18:39,847 INFO L129 PetriNetUnfolder]: 111/637 cut-off events. [2020-01-16 21:18:39,847 INFO L130 PetriNetUnfolder]: For 17628/17664 co-relation queries the response was YES. [2020-01-16 21:18:39,856 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 21:18:39,859 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 124 places, 0 of 120 transitions, 63 of 2956 flow. [2020-01-16 21:18:39,859 INFO L478 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions [2020-01-16 21:18:39,859 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:40,031 INFO L129 PetriNetUnfolder]: 111/583 cut-off events. [2020-01-16 21:18:40,031 INFO L130 PetriNetUnfolder]: For 17692/17731 co-relation queries the response was YES. [2020-01-16 21:18:40,031 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:40,031 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:40,031 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 21:18:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:40,032 INFO L82 PathProgramCache]: Analyzing trace with hash -255251587, now seen corresponding path program 10 times [2020-01-16 21:18:40,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:40,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785329106] [2020-01-16 21:18:40,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:40,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785329106] [2020-01-16 21:18:40,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:40,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:40,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085157277] [2020-01-16 21:18:40,290 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:40,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:40,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:40,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:40,291 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:40,292 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions. Second operand 7 states. [2020-01-16 21:18:40,292 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:40,292 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:40,292 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:40,723 INFO L129 PetriNetUnfolder]: 138/699 cut-off events. [2020-01-16 21:18:40,723 INFO L130 PetriNetUnfolder]: For 20361/20453 co-relation queries the response was YES. [2020-01-16 21:18:40,733 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 21:18:40,735 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 32 selfloop transitions, 90 changer transitions [2020-01-16 21:18:40,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:40,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:40,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:40,736 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:40,737 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:40,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:40,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:40,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:40,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:40,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:40,739 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:40,739 INFO L174 Difference]: Start difference. First operand has 123 places, 120 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:40,741 INFO L199 Difference]: Finished difference. Result has 133 places, 126 transitions [2020-01-16 21:18:40,742 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 21:18:40,742 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 133 places, 126 transitions [2020-01-16 21:18:40,742 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 133 places, 126 transitions [2020-01-16 21:18:40,986 INFO L129 PetriNetUnfolder]: 111/636 cut-off events. [2020-01-16 21:18:40,986 INFO L130 PetriNetUnfolder]: For 21444/21485 co-relation queries the response was YES. [2020-01-16 21:18:40,996 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 21:18:40,999 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 133 places, 0 of 126 transitions, 63 of 3353 flow. [2020-01-16 21:18:40,999 INFO L478 AbstractCegarLoop]: Abstraction has has 132 places, 126 transitions [2020-01-16 21:18:40,999 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:41,287 INFO L129 PetriNetUnfolder]: 111/583 cut-off events. [2020-01-16 21:18:41,288 INFO L130 PetriNetUnfolder]: For 21444/21485 co-relation queries the response was YES. [2020-01-16 21:18:41,288 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:41,288 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:41,288 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 21:18:41,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:41,288 INFO L82 PathProgramCache]: Analyzing trace with hash -616429887, now seen corresponding path program 11 times [2020-01-16 21:18:41,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:41,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945977315] [2020-01-16 21:18:41,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:41,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945977315] [2020-01-16 21:18:41,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:41,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:41,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915270731] [2020-01-16 21:18:41,450 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:41,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:41,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:41,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:41,452 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:41,452 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 126 transitions. Second operand 7 states. [2020-01-16 21:18:41,452 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:41,452 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:41,452 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:41,907 INFO L129 PetriNetUnfolder]: 142/727 cut-off events. [2020-01-16 21:18:41,907 INFO L130 PetriNetUnfolder]: For 25624/25716 co-relation queries the response was YES. [2020-01-16 21:18:41,915 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 21:18:41,916 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 34 selfloop transitions, 94 changer transitions [2020-01-16 21:18:41,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:41,917 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:41,918 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:41,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:41,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:41,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:41,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:41,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:41,920 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:41,920 INFO L174 Difference]: Start difference. First operand has 132 places, 126 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:41,922 INFO L199 Difference]: Finished difference. Result has 142 places, 133 transitions [2020-01-16 21:18:41,923 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 21:18:41,923 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 142 places, 133 transitions [2020-01-16 21:18:41,923 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 142 places, 133 transitions [2020-01-16 21:18:42,198 INFO L129 PetriNetUnfolder]: 117/670 cut-off events. [2020-01-16 21:18:42,198 INFO L130 PetriNetUnfolder]: For 26995/27034 co-relation queries the response was YES. [2020-01-16 21:18:42,205 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 21:18:42,206 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 142 places, 0 of 133 transitions, 66 of 3805 flow. [2020-01-16 21:18:42,207 INFO L478 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions [2020-01-16 21:18:42,207 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:42,335 INFO L129 PetriNetUnfolder]: 117/615 cut-off events. [2020-01-16 21:18:42,335 INFO L130 PetriNetUnfolder]: For 26995/27034 co-relation queries the response was YES. [2020-01-16 21:18:42,336 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:42,336 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:42,336 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 21:18:42,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:42,336 INFO L82 PathProgramCache]: Analyzing trace with hash -487391705, now seen corresponding path program 12 times [2020-01-16 21:18:42,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:42,337 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944585490] [2020-01-16 21:18:42,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:42,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944585490] [2020-01-16 21:18:42,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:42,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:42,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106669502] [2020-01-16 21:18:42,550 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:42,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:42,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:42,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:42,551 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:42,552 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions. Second operand 7 states. [2020-01-16 21:18:42,552 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:42,552 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:42,552 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:42,987 INFO L129 PetriNetUnfolder]: 144/743 cut-off events. [2020-01-16 21:18:42,988 INFO L130 PetriNetUnfolder]: For 31007/31099 co-relation queries the response was YES. [2020-01-16 21:18:42,995 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 21:18:42,996 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 39 selfloop transitions, 95 changer transitions [2020-01-16 21:18:42,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:42,998 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:42,998 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:42,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:42,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:42,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:43,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:43,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:43,001 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:43,001 INFO L174 Difference]: Start difference. First operand has 141 places, 133 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:43,003 INFO L199 Difference]: Finished difference. Result has 151 places, 139 transitions [2020-01-16 21:18:43,003 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 21:18:43,004 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 151 places, 139 transitions [2020-01-16 21:18:43,004 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 151 places, 139 transitions [2020-01-16 21:18:43,314 INFO L129 PetriNetUnfolder]: 121/690 cut-off events. [2020-01-16 21:18:43,315 INFO L130 PetriNetUnfolder]: For 32843/32886 co-relation queries the response was YES. [2020-01-16 21:18:43,321 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 21:18:43,323 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 151 places, 0 of 139 transitions, 68 of 4242 flow. [2020-01-16 21:18:43,323 INFO L478 AbstractCegarLoop]: Abstraction has has 150 places, 139 transitions [2020-01-16 21:18:43,323 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:43,470 INFO L129 PetriNetUnfolder]: 121/633 cut-off events. [2020-01-16 21:18:43,470 INFO L130 PetriNetUnfolder]: For 32883/32930 co-relation queries the response was YES. [2020-01-16 21:18:43,470 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:43,470 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:43,470 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 21:18:43,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:43,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1878785565, now seen corresponding path program 13 times [2020-01-16 21:18:43,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:43,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493437371] [2020-01-16 21:18:43,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:43,658 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493437371] [2020-01-16 21:18:43,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:43,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:43,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141724889] [2020-01-16 21:18:43,659 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:43,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:43,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:43,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:43,660 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:43,660 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 139 transitions. Second operand 7 states. [2020-01-16 21:18:43,660 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:43,660 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:43,660 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:44,067 INFO L129 PetriNetUnfolder]: 143/737 cut-off events. [2020-01-16 21:18:44,067 INFO L130 PetriNetUnfolder]: For 36346/36438 co-relation queries the response was YES. [2020-01-16 21:18:44,074 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 21:18:44,075 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 67 selfloop transitions, 96 changer transitions [2020-01-16 21:18:44,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:44,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:44,077 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:44,077 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:44,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:44,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:44,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:44,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:44,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:44,079 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:44,079 INFO L174 Difference]: Start difference. First operand has 150 places, 139 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:44,081 INFO L199 Difference]: Finished difference. Result has 161 places, 150 transitions [2020-01-16 21:18:44,082 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 21:18:44,082 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 161 places, 150 transitions [2020-01-16 21:18:44,082 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 161 places, 150 transitions [2020-01-16 21:18:44,373 INFO L129 PetriNetUnfolder]: 121/689 cut-off events. [2020-01-16 21:18:44,373 INFO L130 PetriNetUnfolder]: For 39246/39331 co-relation queries the response was YES. [2020-01-16 21:18:44,380 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 21:18:44,382 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 161 places, 0 of 150 transitions, 68 of 4852 flow. [2020-01-16 21:18:44,382 INFO L478 AbstractCegarLoop]: Abstraction has has 160 places, 150 transitions [2020-01-16 21:18:44,382 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:44,541 INFO L129 PetriNetUnfolder]: 121/634 cut-off events. [2020-01-16 21:18:44,542 INFO L130 PetriNetUnfolder]: For 39246/39331 co-relation queries the response was YES. [2020-01-16 21:18:44,542 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:44,542 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:44,542 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 21:18:44,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:44,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1071515999, now seen corresponding path program 14 times [2020-01-16 21:18:44,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:44,543 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849388836] [2020-01-16 21:18:44,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:44,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:44,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849388836] [2020-01-16 21:18:44,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:44,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:44,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617623070] [2020-01-16 21:18:44,680 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:44,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:44,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:44,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:44,681 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:44,681 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 150 transitions. Second operand 7 states. [2020-01-16 21:18:44,681 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:44,681 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:44,682 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:45,159 INFO L129 PetriNetUnfolder]: 146/750 cut-off events. [2020-01-16 21:18:45,160 INFO L130 PetriNetUnfolder]: For 42910/43092 co-relation queries the response was YES. [2020-01-16 21:18:45,168 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 21:18:45,169 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 58 selfloop transitions, 98 changer transitions [2020-01-16 21:18:45,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:45,171 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:45,171 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:45,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:45,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:45,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:45,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:45,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:45,173 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:45,173 INFO L174 Difference]: Start difference. First operand has 160 places, 150 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:45,176 INFO L199 Difference]: Finished difference. Result has 170 places, 161 transitions [2020-01-16 21:18:45,176 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 21:18:45,177 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 170 places, 161 transitions [2020-01-16 21:18:45,177 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 170 places, 161 transitions [2020-01-16 21:18:45,696 INFO L129 PetriNetUnfolder]: 121/688 cut-off events. [2020-01-16 21:18:45,696 INFO L130 PetriNetUnfolder]: For 45033/45122 co-relation queries the response was YES. [2020-01-16 21:18:45,704 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 21:18:45,705 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 170 places, 0 of 161 transitions, 68 of 5451 flow. [2020-01-16 21:18:45,706 INFO L478 AbstractCegarLoop]: Abstraction has has 169 places, 161 transitions [2020-01-16 21:18:45,706 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:45,880 INFO L129 PetriNetUnfolder]: 121/634 cut-off events. [2020-01-16 21:18:45,880 INFO L130 PetriNetUnfolder]: For 44948/45031 co-relation queries the response was YES. [2020-01-16 21:18:45,881 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:45,881 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:45,881 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 21:18:45,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:45,881 INFO L82 PathProgramCache]: Analyzing trace with hash -387090589, now seen corresponding path program 15 times [2020-01-16 21:18:45,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:45,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84538585] [2020-01-16 21:18:45,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:46,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84538585] [2020-01-16 21:18:46,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:46,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:46,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648308684] [2020-01-16 21:18:46,039 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:46,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:46,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:46,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:46,041 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:46,041 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 161 transitions. Second operand 7 states. [2020-01-16 21:18:46,041 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:46,041 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:46,041 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:46,872 INFO L129 PetriNetUnfolder]: 157/816 cut-off events. [2020-01-16 21:18:46,872 INFO L130 PetriNetUnfolder]: For 54221/54465 co-relation queries the response was YES. [2020-01-16 21:18:46,882 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 21:18:46,883 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 71 selfloop transitions, 113 changer transitions [2020-01-16 21:18:46,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:46,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:46,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:46,921 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:46,921 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:46,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:46,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:46,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:46,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:46,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:46,923 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:46,923 INFO L174 Difference]: Start difference. First operand has 169 places, 161 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:46,926 INFO L199 Difference]: Finished difference. Result has 180 places, 177 transitions [2020-01-16 21:18:46,927 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 21:18:46,927 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 180 places, 177 transitions [2020-01-16 21:18:46,927 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 180 places, 177 transitions [2020-01-16 21:18:47,251 INFO L129 PetriNetUnfolder]: 133/754 cut-off events. [2020-01-16 21:18:47,251 INFO L130 PetriNetUnfolder]: For 59059/59274 co-relation queries the response was YES. [2020-01-16 21:18:47,260 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 21:18:47,262 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 180 places, 0 of 177 transitions, 75 of 6376 flow. [2020-01-16 21:18:47,262 INFO L478 AbstractCegarLoop]: Abstraction has has 179 places, 177 transitions [2020-01-16 21:18:47,262 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:47,478 INFO L129 PetriNetUnfolder]: 133/694 cut-off events. [2020-01-16 21:18:47,479 INFO L130 PetriNetUnfolder]: For 59059/59274 co-relation queries the response was YES. [2020-01-16 21:18:47,479 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:47,479 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:47,479 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 21:18:47,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:47,479 INFO L82 PathProgramCache]: Analyzing trace with hash 515566599, now seen corresponding path program 16 times [2020-01-16 21:18:47,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:47,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953092793] [2020-01-16 21:18:47,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:47,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953092793] [2020-01-16 21:18:47,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:47,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:47,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712833667] [2020-01-16 21:18:47,672 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:47,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:47,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:47,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:47,673 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:47,674 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 177 transitions. Second operand 7 states. [2020-01-16 21:18:47,674 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:47,674 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:47,674 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:48,374 INFO L129 PetriNetUnfolder]: 162/859 cut-off events. [2020-01-16 21:18:48,374 INFO L130 PetriNetUnfolder]: For 65164/65358 co-relation queries the response was YES. [2020-01-16 21:18:48,388 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 21:18:48,425 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 56 selfloop transitions, 130 changer transitions [2020-01-16 21:18:48,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:48,430 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:48,430 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:48,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:48,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:48,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:48,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:48,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:48,432 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:48,432 INFO L174 Difference]: Start difference. First operand has 179 places, 177 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:48,435 INFO L199 Difference]: Finished difference. Result has 189 places, 193 transitions [2020-01-16 21:18:48,435 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 21:18:48,436 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 189 places, 193 transitions [2020-01-16 21:18:48,436 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 189 places, 193 transitions [2020-01-16 21:18:48,911 INFO L129 PetriNetUnfolder]: 143/809 cut-off events. [2020-01-16 21:18:48,911 INFO L130 PetriNetUnfolder]: For 71251/71452 co-relation queries the response was YES. [2020-01-16 21:18:48,922 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 21:18:48,925 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 189 places, 0 of 193 transitions, 80 of 7378 flow. [2020-01-16 21:18:48,925 INFO L478 AbstractCegarLoop]: Abstraction has has 188 places, 193 transitions [2020-01-16 21:18:48,925 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:49,185 INFO L129 PetriNetUnfolder]: 143/745 cut-off events. [2020-01-16 21:18:49,185 INFO L130 PetriNetUnfolder]: For 68788/68853 co-relation queries the response was YES. [2020-01-16 21:18:49,186 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:49,186 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:49,186 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 21:18:49,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:49,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1133673789, now seen corresponding path program 17 times [2020-01-16 21:18:49,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:49,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541258241] [2020-01-16 21:18:49,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:49,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541258241] [2020-01-16 21:18:49,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:49,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:49,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108321954] [2020-01-16 21:18:49,348 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:49,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:49,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:49,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:49,349 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:49,349 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 193 transitions. Second operand 7 states. [2020-01-16 21:18:49,349 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:49,349 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:49,349 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:50,171 INFO L129 PetriNetUnfolder]: 159/844 cut-off events. [2020-01-16 21:18:50,171 INFO L130 PetriNetUnfolder]: For 73516/73710 co-relation queries the response was YES. [2020-01-16 21:18:50,181 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 21:18:50,183 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 79 selfloop transitions, 118 changer transitions [2020-01-16 21:18:50,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:50,184 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:50,184 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:50,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:50,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:50,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:50,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:50,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:50,186 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:50,186 INFO L174 Difference]: Start difference. First operand has 188 places, 193 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:50,189 INFO L199 Difference]: Finished difference. Result has 196 places, 195 transitions [2020-01-16 21:18:50,190 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 21:18:50,190 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 196 places, 195 transitions [2020-01-16 21:18:50,190 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 196 places, 195 transitions [2020-01-16 21:18:50,550 INFO L129 PetriNetUnfolder]: 143/808 cut-off events. [2020-01-16 21:18:50,550 INFO L130 PetriNetUnfolder]: For 78875/79006 co-relation queries the response was YES. [2020-01-16 21:18:50,560 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 21:18:50,563 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 196 places, 0 of 195 transitions, 80 of 7768 flow. [2020-01-16 21:18:50,563 INFO L478 AbstractCegarLoop]: Abstraction has has 195 places, 195 transitions [2020-01-16 21:18:50,563 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:50,832 INFO L129 PetriNetUnfolder]: 143/745 cut-off events. [2020-01-16 21:18:50,832 INFO L130 PetriNetUnfolder]: For 79487/79679 co-relation queries the response was YES. [2020-01-16 21:18:50,832 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:50,832 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:50,832 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 21:18:50,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:50,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1963741189, now seen corresponding path program 18 times [2020-01-16 21:18:50,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:50,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793001120] [2020-01-16 21:18:50,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:51,001 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793001120] [2020-01-16 21:18:51,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:51,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:51,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938109465] [2020-01-16 21:18:51,002 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:51,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:51,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:51,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:51,003 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:51,004 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 195 transitions. Second operand 7 states. [2020-01-16 21:18:51,004 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:51,004 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:51,004 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:51,900 INFO L129 PetriNetUnfolder]: 157/835 cut-off events. [2020-01-16 21:18:51,900 INFO L130 PetriNetUnfolder]: For 83730/84077 co-relation queries the response was YES. [2020-01-16 21:18:51,910 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 21:18:51,912 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 96 selfloop transitions, 127 changer transitions [2020-01-16 21:18:51,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:51,913 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:51,913 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:51,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:51,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:51,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:51,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:51,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:51,914 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:51,914 INFO L174 Difference]: Start difference. First operand has 195 places, 195 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:51,918 INFO L199 Difference]: Finished difference. Result has 206 places, 215 transitions [2020-01-16 21:18:51,918 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 21:18:51,918 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 206 places, 215 transitions [2020-01-16 21:18:51,919 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 206 places, 215 transitions [2020-01-16 21:18:52,340 INFO L129 PetriNetUnfolder]: 143/807 cut-off events. [2020-01-16 21:18:52,340 INFO L130 PetriNetUnfolder]: For 90921/91207 co-relation queries the response was YES. [2020-01-16 21:18:52,352 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 21:18:52,355 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 206 places, 0 of 215 transitions, 80 of 8927 flow. [2020-01-16 21:18:52,355 INFO L478 AbstractCegarLoop]: Abstraction has has 205 places, 215 transitions [2020-01-16 21:18:52,355 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:52,654 INFO L129 PetriNetUnfolder]: 143/745 cut-off events. [2020-01-16 21:18:52,655 INFO L130 PetriNetUnfolder]: For 90921/91207 co-relation queries the response was YES. [2020-01-16 21:18:52,655 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:52,655 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:52,655 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 21:18:52,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:52,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1134773615, now seen corresponding path program 19 times [2020-01-16 21:18:52,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:52,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999340391] [2020-01-16 21:18:52,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:52,820 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999340391] [2020-01-16 21:18:52,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:52,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:52,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901282336] [2020-01-16 21:18:52,821 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:52,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:52,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:52,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:52,822 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:52,822 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 215 transitions. Second operand 7 states. [2020-01-16 21:18:52,822 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:52,823 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:52,823 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:53,702 INFO L129 PetriNetUnfolder]: 162/855 cut-off events. [2020-01-16 21:18:53,703 INFO L130 PetriNetUnfolder]: For 92604/92905 co-relation queries the response was YES. [2020-01-16 21:18:53,713 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 21:18:53,715 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 81 selfloop transitions, 142 changer transitions [2020-01-16 21:18:53,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:53,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:53,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:53,716 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:53,716 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:53,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:53,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:53,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:53,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:53,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:53,717 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:53,717 INFO L174 Difference]: Start difference. First operand has 205 places, 215 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:53,720 INFO L199 Difference]: Finished difference. Result has 213 places, 218 transitions [2020-01-16 21:18:53,720 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 21:18:53,720 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 213 places, 218 transitions [2020-01-16 21:18:53,720 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 213 places, 218 transitions [2020-01-16 21:18:54,144 INFO L129 PetriNetUnfolder]: 143/806 cut-off events. [2020-01-16 21:18:54,145 INFO L130 PetriNetUnfolder]: For 99263/99549 co-relation queries the response was YES. [2020-01-16 21:18:54,160 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 21:18:54,163 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 213 places, 0 of 218 transitions, 80 of 9349 flow. [2020-01-16 21:18:54,163 INFO L478 AbstractCegarLoop]: Abstraction has has 212 places, 218 transitions [2020-01-16 21:18:54,163 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:54,481 INFO L129 PetriNetUnfolder]: 143/745 cut-off events. [2020-01-16 21:18:54,481 INFO L130 PetriNetUnfolder]: For 101648/102072 co-relation queries the response was YES. [2020-01-16 21:18:54,481 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:54,482 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:54,482 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 21:18:54,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:54,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1917995873, now seen corresponding path program 20 times [2020-01-16 21:18:54,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:54,483 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542371464] [2020-01-16 21:18:54,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:54,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542371464] [2020-01-16 21:18:54,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:54,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:54,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453316020] [2020-01-16 21:18:54,667 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:54,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:54,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:54,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:54,669 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:54,669 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 218 transitions. Second operand 7 states. [2020-01-16 21:18:54,669 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:54,669 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:54,669 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:55,523 INFO L129 PetriNetUnfolder]: 157/833 cut-off events. [2020-01-16 21:18:55,523 INFO L130 PetriNetUnfolder]: For 101416/101692 co-relation queries the response was YES. [2020-01-16 21:18:55,540 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 21:18:55,542 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 99 selfloop transitions, 127 changer transitions [2020-01-16 21:18:55,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:55,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:55,543 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:55,543 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:55,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:55,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:55,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:55,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:55,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:55,545 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:55,545 INFO L174 Difference]: Start difference. First operand has 212 places, 218 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:55,549 INFO L199 Difference]: Finished difference. Result has 221 places, 224 transitions [2020-01-16 21:18:55,550 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 21:18:55,550 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 221 places, 224 transitions [2020-01-16 21:18:55,550 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 221 places, 224 transitions [2020-01-16 21:18:56,093 INFO L129 PetriNetUnfolder]: 143/805 cut-off events. [2020-01-16 21:18:56,094 INFO L130 PetriNetUnfolder]: For 108622/108972 co-relation queries the response was YES. [2020-01-16 21:18:56,105 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 21:18:56,108 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 221 places, 0 of 224 transitions, 80 of 9854 flow. [2020-01-16 21:18:56,108 INFO L478 AbstractCegarLoop]: Abstraction has has 220 places, 224 transitions [2020-01-16 21:18:56,108 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:56,440 INFO L129 PetriNetUnfolder]: 143/745 cut-off events. [2020-01-16 21:18:56,440 INFO L130 PetriNetUnfolder]: For 108622/108972 co-relation queries the response was YES. [2020-01-16 21:18:56,440 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:56,440 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:56,441 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 21:18:56,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:56,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1249022619, now seen corresponding path program 21 times [2020-01-16 21:18:56,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:56,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477962637] [2020-01-16 21:18:56,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:56,600 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 21:18:56,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477962637] [2020-01-16 21:18:56,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:56,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:56,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051125172] [2020-01-16 21:18:56,602 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:56,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:56,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:56,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:56,603 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:56,604 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 224 transitions. Second operand 7 states. [2020-01-16 21:18:56,606 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:56,606 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:56,606 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:57,523 INFO L129 PetriNetUnfolder]: 163/878 cut-off events. [2020-01-16 21:18:57,523 INFO L130 PetriNetUnfolder]: For 115798/116074 co-relation queries the response was YES. [2020-01-16 21:18:57,538 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 21:18:57,540 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 78 selfloop transitions, 158 changer transitions [2020-01-16 21:18:57,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:57,541 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:57,541 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:57,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:57,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:57,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:57,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:57,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:57,544 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:57,544 INFO L174 Difference]: Start difference. First operand has 220 places, 224 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:57,548 INFO L199 Difference]: Finished difference. Result has 230 places, 234 transitions [2020-01-16 21:18:57,548 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 21:18:57,549 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 230 places, 234 transitions [2020-01-16 21:18:57,549 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 230 places, 234 transitions [2020-01-16 21:18:58,172 INFO L129 PetriNetUnfolder]: 150/845 cut-off events. [2020-01-16 21:18:58,172 INFO L130 PetriNetUnfolder]: For 124116/124493 co-relation queries the response was YES. [2020-01-16 21:18:58,184 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 21:18:58,187 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 230 places, 0 of 234 transitions, 84 of 10722 flow. [2020-01-16 21:18:58,187 INFO L478 AbstractCegarLoop]: Abstraction has has 229 places, 234 transitions [2020-01-16 21:18:58,187 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:18:58,590 INFO L129 PetriNetUnfolder]: 150/782 cut-off events. [2020-01-16 21:18:58,591 INFO L130 PetriNetUnfolder]: For 120781/120945 co-relation queries the response was YES. [2020-01-16 21:18:58,591 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:58,591 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:58,591 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 21:18:58,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:58,591 INFO L82 PathProgramCache]: Analyzing trace with hash 887386885, now seen corresponding path program 22 times [2020-01-16 21:18:58,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:58,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411779253] [2020-01-16 21:18:58,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:58,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411779253] [2020-01-16 21:18:58,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:58,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:18:58,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828328198] [2020-01-16 21:18:58,746 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:18:58,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:58,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:18:58,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:18:58,747 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:18:58,747 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 234 transitions. Second operand 7 states. [2020-01-16 21:18:58,748 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:58,748 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:18:58,748 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:59,950 INFO L129 PetriNetUnfolder]: 171/928 cut-off events. [2020-01-16 21:18:59,951 INFO L130 PetriNetUnfolder]: For 135255/135536 co-relation queries the response was YES. [2020-01-16 21:18:59,967 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 21:18:59,969 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 99 selfloop transitions, 163 changer transitions [2020-01-16 21:18:59,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:18:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:18:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:18:59,970 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:18:59,970 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:18:59,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:18:59,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:59,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:18:59,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:18:59,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:18:59,972 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:18:59,972 INFO L174 Difference]: Start difference. First operand has 229 places, 234 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:18:59,975 INFO L199 Difference]: Finished difference. Result has 240 places, 257 transitions [2020-01-16 21:18:59,975 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 21:18:59,976 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 240 places, 257 transitions [2020-01-16 21:18:59,976 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 240 places, 257 transitions [2020-01-16 21:19:00,731 INFO L129 PetriNetUnfolder]: 161/906 cut-off events. [2020-01-16 21:19:00,731 INFO L130 PetriNetUnfolder]: For 141136/141294 co-relation queries the response was YES. [2020-01-16 21:19:00,753 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 21:19:00,757 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 240 places, 0 of 257 transitions, 90 of 12208 flow. [2020-01-16 21:19:00,757 INFO L478 AbstractCegarLoop]: Abstraction has has 239 places, 257 transitions [2020-01-16 21:19:00,758 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:01,321 INFO L129 PetriNetUnfolder]: 161/838 cut-off events. [2020-01-16 21:19:01,321 INFO L130 PetriNetUnfolder]: For 140035/140132 co-relation queries the response was YES. [2020-01-16 21:19:01,321 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:01,321 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:01,321 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 21:19:01,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:01,322 INFO L82 PathProgramCache]: Analyzing trace with hash 613767923, now seen corresponding path program 23 times [2020-01-16 21:19:01,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:01,322 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224864275] [2020-01-16 21:19:01,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:01,467 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224864275] [2020-01-16 21:19:01,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:01,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:19:01,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318022362] [2020-01-16 21:19:01,468 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:19:01,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:01,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:19:01,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:19:01,469 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:19:01,469 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 257 transitions. Second operand 7 states. [2020-01-16 21:19:01,469 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:01,470 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:19:01,470 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:02,674 INFO L129 PetriNetUnfolder]: 173/935 cut-off events. [2020-01-16 21:19:02,674 INFO L130 PetriNetUnfolder]: For 150056/150687 co-relation queries the response was YES. [2020-01-16 21:19:02,691 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 21:19:02,694 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 113 selfloop transitions, 156 changer transitions [2020-01-16 21:19:02,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:19:02,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:19:02,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:19:02,695 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:19:02,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:19:02,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:19:02,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:02,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:19:02,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:19:02,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:19:02,696 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:19:02,696 INFO L174 Difference]: Start difference. First operand has 239 places, 257 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:19:02,702 INFO L199 Difference]: Finished difference. Result has 246 places, 257 transitions [2020-01-16 21:19:02,702 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 21:19:02,702 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 246 places, 257 transitions [2020-01-16 21:19:02,702 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 246 places, 257 transitions [2020-01-16 21:19:03,465 INFO L129 PetriNetUnfolder]: 161/905 cut-off events. [2020-01-16 21:19:03,465 INFO L130 PetriNetUnfolder]: For 150400/150497 co-relation queries the response was YES. [2020-01-16 21:19:03,481 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 21:19:03,485 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 246 places, 0 of 257 transitions, 90 of 12520 flow. [2020-01-16 21:19:03,485 INFO L478 AbstractCegarLoop]: Abstraction has has 245 places, 257 transitions [2020-01-16 21:19:03,485 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:04,032 INFO L129 PetriNetUnfolder]: 161/838 cut-off events. [2020-01-16 21:19:04,033 INFO L130 PetriNetUnfolder]: For 151375/151545 co-relation queries the response was YES. [2020-01-16 21:19:04,033 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:04,033 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:04,033 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 21:19:04,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:04,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1990633439, now seen corresponding path program 24 times [2020-01-16 21:19:04,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:04,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934015687] [2020-01-16 21:19:04,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:04,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934015687] [2020-01-16 21:19:04,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:04,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:19:04,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401709042] [2020-01-16 21:19:04,213 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:19:04,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:04,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:19:04,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:19:04,214 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:19:04,214 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 257 transitions. Second operand 7 states. [2020-01-16 21:19:04,215 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:04,215 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:19:04,215 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:05,532 INFO L129 PetriNetUnfolder]: 173/936 cut-off events. [2020-01-16 21:19:05,533 INFO L130 PetriNetUnfolder]: For 160763/161363 co-relation queries the response was YES. [2020-01-16 21:19:05,550 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 21:19:05,553 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 121 selfloop transitions, 165 changer transitions [2020-01-16 21:19:05,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:19:05,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:19:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:19:05,554 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:19:05,554 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:19:05,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:19:05,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:05,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:19:05,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:19:05,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:19:05,557 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:19:05,557 INFO L174 Difference]: Start difference. First operand has 245 places, 257 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:19:05,562 INFO L199 Difference]: Finished difference. Result has 256 places, 281 transitions [2020-01-16 21:19:05,563 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 21:19:05,563 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 256 places, 281 transitions [2020-01-16 21:19:05,563 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 256 places, 281 transitions [2020-01-16 21:19:06,368 INFO L129 PetriNetUnfolder]: 161/904 cut-off events. [2020-01-16 21:19:06,369 INFO L130 PetriNetUnfolder]: For 165183/165406 co-relation queries the response was YES. [2020-01-16 21:19:06,386 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 21:19:06,389 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 256 places, 0 of 281 transitions, 90 of 14102 flow. [2020-01-16 21:19:06,390 INFO L478 AbstractCegarLoop]: Abstraction has has 255 places, 281 transitions [2020-01-16 21:19:06,390 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:07,094 INFO L129 PetriNetUnfolder]: 161/838 cut-off events. [2020-01-16 21:19:07,094 INFO L130 PetriNetUnfolder]: For 165203/165429 co-relation queries the response was YES. [2020-01-16 21:19:07,094 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:07,094 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:07,094 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 21:19:07,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:07,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1478277409, now seen corresponding path program 25 times [2020-01-16 21:19:07,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:07,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037700408] [2020-01-16 21:19:07,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:07,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:07,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037700408] [2020-01-16 21:19:07,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:07,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:19:07,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699165662] [2020-01-16 21:19:07,277 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:19:07,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:07,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:19:07,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:19:07,278 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:19:07,279 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 281 transitions. Second operand 7 states. [2020-01-16 21:19:07,279 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:07,279 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:19:07,279 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:08,885 INFO L129 PetriNetUnfolder]: 188/1037 cut-off events. [2020-01-16 21:19:08,885 INFO L130 PetriNetUnfolder]: For 196361/197355 co-relation queries the response was YES. [2020-01-16 21:19:08,906 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 21:19:08,908 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 138 selfloop transitions, 175 changer transitions [2020-01-16 21:19:08,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:19:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:19:08,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:19:08,910 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:19:08,910 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:19:08,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:19:08,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:08,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:19:08,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:19:08,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:19:08,911 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:19:08,911 INFO L174 Difference]: Start difference. First operand has 255 places, 281 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:19:08,917 INFO L199 Difference]: Finished difference. Result has 266 places, 308 transitions [2020-01-16 21:19:08,917 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 21:19:08,917 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 266 places, 308 transitions [2020-01-16 21:19:08,917 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 266 places, 308 transitions [2020-01-16 21:19:10,010 INFO L129 PetriNetUnfolder]: 182/1024 cut-off events. [2020-01-16 21:19:10,010 INFO L130 PetriNetUnfolder]: For 201189/201365 co-relation queries the response was YES. [2020-01-16 21:19:10,031 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 21:19:10,036 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 266 places, 0 of 308 transitions, 101 of 16229 flow. [2020-01-16 21:19:10,036 INFO L478 AbstractCegarLoop]: Abstraction has has 265 places, 308 transitions [2020-01-16 21:19:10,036 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:11,061 INFO L129 PetriNetUnfolder]: 182/947 cut-off events. [2020-01-16 21:19:11,061 INFO L130 PetriNetUnfolder]: For 202690/203039 co-relation queries the response was YES. [2020-01-16 21:19:11,062 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:11,062 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:11,062 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 21:19:11,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:11,062 INFO L82 PathProgramCache]: Analyzing trace with hash 389964929, now seen corresponding path program 26 times [2020-01-16 21:19:11,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:11,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694051363] [2020-01-16 21:19:11,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:11,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694051363] [2020-01-16 21:19:11,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:11,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:19:11,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327855175] [2020-01-16 21:19:11,221 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:19:11,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:11,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:19:11,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:19:11,222 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:19:11,222 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 308 transitions. Second operand 7 states. [2020-01-16 21:19:11,222 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:11,223 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:19:11,223 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:12,938 INFO L129 PetriNetUnfolder]: 190/1046 cut-off events. [2020-01-16 21:19:12,939 INFO L130 PetriNetUnfolder]: For 212035/213029 co-relation queries the response was YES. [2020-01-16 21:19:12,960 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 21:19:12,963 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 129 selfloop transitions, 186 changer transitions [2020-01-16 21:19:12,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:19:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:19:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:19:12,964 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:19:12,964 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:19:12,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:19:12,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:12,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:19:12,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:19:12,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:19:12,965 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:19:12,965 INFO L174 Difference]: Start difference. First operand has 265 places, 308 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:19:12,970 INFO L199 Difference]: Finished difference. Result has 274 places, 312 transitions [2020-01-16 21:19:12,970 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 21:19:12,970 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 274 places, 312 transitions [2020-01-16 21:19:12,971 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 274 places, 312 transitions [2020-01-16 21:19:14,168 INFO L129 PetriNetUnfolder]: 182/1023 cut-off events. [2020-01-16 21:19:14,168 INFO L130 PetriNetUnfolder]: For 216843/217197 co-relation queries the response was YES. [2020-01-16 21:19:14,194 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 21:19:14,199 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 274 places, 0 of 312 transitions, 101 of 16810 flow. [2020-01-16 21:19:14,199 INFO L478 AbstractCegarLoop]: Abstraction has has 273 places, 312 transitions [2020-01-16 21:19:14,199 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:15,013 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:19:15,014 INFO L130 PetriNetUnfolder]: For 216843/217197 co-relation queries the response was YES. [2020-01-16 21:19:15,014 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:15,014 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:15,014 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 21:19:15,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:15,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1255159617, now seen corresponding path program 27 times [2020-01-16 21:19:15,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:15,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60529878] [2020-01-16 21:19:15,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:15,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60529878] [2020-01-16 21:19:15,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:15,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:19:15,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572662030] [2020-01-16 21:19:15,226 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:19:15,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:15,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:19:15,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:19:15,227 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:19:15,227 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 312 transitions. Second operand 7 states. [2020-01-16 21:19:15,227 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:15,228 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:19:15,228 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:16,995 INFO L129 PetriNetUnfolder]: 189/1038 cut-off events. [2020-01-16 21:19:16,995 INFO L130 PetriNetUnfolder]: For 226480/227402 co-relation queries the response was YES. [2020-01-16 21:19:17,017 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 21:19:17,020 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 142 selfloop transitions, 190 changer transitions [2020-01-16 21:19:17,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:19:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:19:17,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:19:17,022 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:19:17,022 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:19:17,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:19:17,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:17,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:19:17,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:19:17,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:19:17,024 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:19:17,024 INFO L174 Difference]: Start difference. First operand has 273 places, 312 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:19:17,031 INFO L199 Difference]: Finished difference. Result has 283 places, 328 transitions [2020-01-16 21:19:17,031 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 21:19:17,032 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 283 places, 328 transitions [2020-01-16 21:19:17,032 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 283 places, 328 transitions [2020-01-16 21:19:18,352 INFO L129 PetriNetUnfolder]: 182/1022 cut-off events. [2020-01-16 21:19:18,352 INFO L130 PetriNetUnfolder]: For 233112/233474 co-relation queries the response was YES. [2020-01-16 21:19:18,371 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 21:19:18,376 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 283 places, 0 of 328 transitions, 101 of 18093 flow. [2020-01-16 21:19:18,376 INFO L478 AbstractCegarLoop]: Abstraction has has 282 places, 328 transitions [2020-01-16 21:19:18,377 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:19,232 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:19:19,232 INFO L130 PetriNetUnfolder]: For 232547/232854 co-relation queries the response was YES. [2020-01-16 21:19:19,232 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:19,232 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:19,232 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 21:19:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:19,232 INFO L82 PathProgramCache]: Analyzing trace with hash 755726137, now seen corresponding path program 28 times [2020-01-16 21:19:19,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:19,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411338520] [2020-01-16 21:19:19,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:19,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411338520] [2020-01-16 21:19:19,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:19,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:19:19,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875189041] [2020-01-16 21:19:19,421 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:19:19,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:19,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:19:19,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:19:19,422 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:19:19,422 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 328 transitions. Second operand 7 states. [2020-01-16 21:19:19,422 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:19,422 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:19:19,422 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:21,317 INFO L129 PetriNetUnfolder]: 188/1035 cut-off events. [2020-01-16 21:19:21,317 INFO L130 PetriNetUnfolder]: For 244502/245907 co-relation queries the response was YES. [2020-01-16 21:19:21,339 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 21:19:21,344 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 131 selfloop transitions, 192 changer transitions [2020-01-16 21:19:21,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:19:21,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:19:21,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:19:21,345 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:19:21,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:19:21,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:19:21,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:21,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:19:21,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:19:21,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:19:21,347 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:19:21,347 INFO L174 Difference]: Start difference. First operand has 282 places, 328 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:19:21,354 INFO L199 Difference]: Finished difference. Result has 290 places, 329 transitions [2020-01-16 21:19:21,355 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 21:19:21,355 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 290 places, 329 transitions [2020-01-16 21:19:21,355 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 290 places, 329 transitions [2020-01-16 21:19:22,693 INFO L129 PetriNetUnfolder]: 182/1021 cut-off events. [2020-01-16 21:19:22,693 INFO L130 PetriNetUnfolder]: For 246367/246623 co-relation queries the response was YES. [2020-01-16 21:19:22,723 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 21:19:22,728 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 290 places, 0 of 329 transitions, 101 of 18536 flow. [2020-01-16 21:19:22,728 INFO L478 AbstractCegarLoop]: Abstraction has has 289 places, 329 transitions [2020-01-16 21:19:22,728 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:23,889 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:19:23,889 INFO L130 PetriNetUnfolder]: For 246367/246623 co-relation queries the response was YES. [2020-01-16 21:19:23,889 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:23,889 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:23,889 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 21:19:23,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:23,890 INFO L82 PathProgramCache]: Analyzing trace with hash 198594609, now seen corresponding path program 29 times [2020-01-16 21:19:23,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:23,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675002450] [2020-01-16 21:19:23,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:24,057 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675002450] [2020-01-16 21:19:24,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:24,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:19:24,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877618405] [2020-01-16 21:19:24,058 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:19:24,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:24,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:19:24,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:19:24,059 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:19:24,059 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 329 transitions. Second operand 7 states. [2020-01-16 21:19:24,059 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:24,059 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:19:24,059 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:25,937 INFO L129 PetriNetUnfolder]: 188/1034 cut-off events. [2020-01-16 21:19:25,938 INFO L130 PetriNetUnfolder]: For 256720/257396 co-relation queries the response was YES. [2020-01-16 21:19:25,961 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 21:19:25,964 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 136 selfloop transitions, 193 changer transitions [2020-01-16 21:19:25,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:19:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:19:25,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:19:25,965 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:19:25,965 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:19:25,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:19:25,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:25,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:19:25,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:19:25,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:19:25,967 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:19:25,967 INFO L174 Difference]: Start difference. First operand has 289 places, 329 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:19:25,974 INFO L199 Difference]: Finished difference. Result has 298 places, 333 transitions [2020-01-16 21:19:25,975 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 21:19:25,975 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 298 places, 333 transitions [2020-01-16 21:19:25,975 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 298 places, 333 transitions [2020-01-16 21:19:27,274 INFO L129 PetriNetUnfolder]: 182/1020 cut-off events. [2020-01-16 21:19:27,274 INFO L130 PetriNetUnfolder]: For 262444/262702 co-relation queries the response was YES. [2020-01-16 21:19:27,297 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 21:19:27,302 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 298 places, 0 of 333 transitions, 101 of 19235 flow. [2020-01-16 21:19:27,303 INFO L478 AbstractCegarLoop]: Abstraction has has 297 places, 333 transitions [2020-01-16 21:19:27,303 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:28,189 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:19:28,189 INFO L130 PetriNetUnfolder]: For 262167/262422 co-relation queries the response was YES. [2020-01-16 21:19:28,189 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:28,189 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:28,189 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 21:19:28,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:28,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1031803955, now seen corresponding path program 30 times [2020-01-16 21:19:28,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:28,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228674221] [2020-01-16 21:19:28,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:28,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228674221] [2020-01-16 21:19:28,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:28,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:19:28,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56104965] [2020-01-16 21:19:28,335 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:19:28,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:28,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:19:28,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:19:28,335 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:19:28,335 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 333 transitions. Second operand 7 states. [2020-01-16 21:19:28,335 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:28,336 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:19:28,336 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:30,284 INFO L129 PetriNetUnfolder]: 189/1035 cut-off events. [2020-01-16 21:19:30,284 INFO L130 PetriNetUnfolder]: For 272911/273544 co-relation queries the response was YES. [2020-01-16 21:19:30,308 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 21:19:30,311 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 147 selfloop transitions, 191 changer transitions [2020-01-16 21:19:30,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:19:30,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:19:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:19:30,313 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:19:30,313 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:19:30,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:19:30,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:30,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:19:30,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:19:30,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:19:30,314 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:19:30,314 INFO L174 Difference]: Start difference. First operand has 297 places, 333 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:19:30,322 INFO L199 Difference]: Finished difference. Result has 304 places, 333 transitions [2020-01-16 21:19:30,323 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 21:19:30,323 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 304 places, 333 transitions [2020-01-16 21:19:30,323 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 304 places, 333 transitions [2020-01-16 21:19:31,628 INFO L129 PetriNetUnfolder]: 182/1019 cut-off events. [2020-01-16 21:19:31,628 INFO L130 PetriNetUnfolder]: For 276469/276704 co-relation queries the response was YES. [2020-01-16 21:19:31,654 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 21:19:31,659 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 304 places, 0 of 333 transitions, 101 of 19617 flow. [2020-01-16 21:19:31,660 INFO L478 AbstractCegarLoop]: Abstraction has has 303 places, 333 transitions [2020-01-16 21:19:31,660 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:32,565 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:19:32,565 INFO L130 PetriNetUnfolder]: For 276469/276704 co-relation queries the response was YES. [2020-01-16 21:19:32,565 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:32,565 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:32,565 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 21:19:32,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:32,566 INFO L82 PathProgramCache]: Analyzing trace with hash 28940465, now seen corresponding path program 31 times [2020-01-16 21:19:32,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:32,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522055767] [2020-01-16 21:19:32,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:32,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522055767] [2020-01-16 21:19:32,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:32,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:19:32,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833112396] [2020-01-16 21:19:32,724 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:19:32,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:32,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:19:32,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:19:32,724 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:19:32,725 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 333 transitions. Second operand 7 states. [2020-01-16 21:19:32,725 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:32,725 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:19:32,725 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:34,709 INFO L129 PetriNetUnfolder]: 189/1036 cut-off events. [2020-01-16 21:19:34,710 INFO L130 PetriNetUnfolder]: For 287337/287976 co-relation queries the response was YES. [2020-01-16 21:19:34,733 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 21:19:34,737 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 118 selfloop transitions, 207 changer transitions [2020-01-16 21:19:34,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:19:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:19:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:19:34,738 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:19:34,738 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:19:34,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:19:34,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:34,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:19:34,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:19:34,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:19:34,740 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:19:34,740 INFO L174 Difference]: Start difference. First operand has 303 places, 333 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:19:34,745 INFO L199 Difference]: Finished difference. Result has 310 places, 333 transitions [2020-01-16 21:19:34,745 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 21:19:34,746 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 310 places, 333 transitions [2020-01-16 21:19:34,746 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 310 places, 333 transitions [2020-01-16 21:19:36,070 INFO L129 PetriNetUnfolder]: 182/1018 cut-off events. [2020-01-16 21:19:36,070 INFO L130 PetriNetUnfolder]: For 292478/292711 co-relation queries the response was YES. [2020-01-16 21:19:36,096 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 21:19:36,102 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 310 places, 0 of 333 transitions, 101 of 20031 flow. [2020-01-16 21:19:36,102 INFO L478 AbstractCegarLoop]: Abstraction has has 309 places, 333 transitions [2020-01-16 21:19:36,102 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:37,343 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:19:37,343 INFO L130 PetriNetUnfolder]: For 292478/292711 co-relation queries the response was YES. [2020-01-16 21:19:37,343 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:37,343 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:37,343 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 21:19:37,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:37,344 INFO L82 PathProgramCache]: Analyzing trace with hash -117618559, now seen corresponding path program 32 times [2020-01-16 21:19:37,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:37,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829719449] [2020-01-16 21:19:37,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:37,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829719449] [2020-01-16 21:19:37,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:37,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:19:37,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839959481] [2020-01-16 21:19:37,539 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:19:37,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:37,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:19:37,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:19:37,540 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:19:37,540 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 333 transitions. Second operand 7 states. [2020-01-16 21:19:37,540 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:37,540 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:19:37,540 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:39,610 INFO L129 PetriNetUnfolder]: 190/1040 cut-off events. [2020-01-16 21:19:39,610 INFO L130 PetriNetUnfolder]: For 303549/304178 co-relation queries the response was YES. [2020-01-16 21:19:39,634 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 21:19:39,638 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 139 selfloop transitions, 204 changer transitions [2020-01-16 21:19:39,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:19:39,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:19:39,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:19:39,639 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:19:39,639 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:19:39,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:19:39,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:39,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:19:39,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:19:39,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:19:39,641 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:19:39,641 INFO L174 Difference]: Start difference. First operand has 309 places, 333 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:19:39,647 INFO L199 Difference]: Finished difference. Result has 318 places, 343 transitions [2020-01-16 21:19:39,647 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 21:19:39,647 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 318 places, 343 transitions [2020-01-16 21:19:39,648 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 318 places, 343 transitions [2020-01-16 21:19:41,032 INFO L129 PetriNetUnfolder]: 182/1017 cut-off events. [2020-01-16 21:19:41,032 INFO L130 PetriNetUnfolder]: For 310359/310582 co-relation queries the response was YES. [2020-01-16 21:19:41,057 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 21:19:41,062 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 318 places, 0 of 343 transitions, 101 of 21041 flow. [2020-01-16 21:19:41,062 INFO L478 AbstractCegarLoop]: Abstraction has has 317 places, 343 transitions [2020-01-16 21:19:41,063 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:41,895 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:19:41,895 INFO L130 PetriNetUnfolder]: For 310382/310581 co-relation queries the response was YES. [2020-01-16 21:19:41,895 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:41,895 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:41,895 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 21:19:41,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:41,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1531085189, now seen corresponding path program 33 times [2020-01-16 21:19:41,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:41,896 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142513350] [2020-01-16 21:19:41,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:42,048 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 21:19:42,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142513350] [2020-01-16 21:19:42,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:42,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:19:42,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155385467] [2020-01-16 21:19:42,049 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:19:42,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:42,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:19:42,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:19:42,050 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:19:42,050 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 343 transitions. Second operand 7 states. [2020-01-16 21:19:42,050 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:42,051 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:19:42,051 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:44,164 INFO L129 PetriNetUnfolder]: 188/1032 cut-off events. [2020-01-16 21:19:44,164 INFO L130 PetriNetUnfolder]: For 320436/320830 co-relation queries the response was YES. [2020-01-16 21:19:44,189 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 21:19:44,193 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 153 selfloop transitions, 205 changer transitions [2020-01-16 21:19:44,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:19:44,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:19:44,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:19:44,194 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:19:44,194 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:19:44,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:19:44,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:44,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:19:44,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:19:44,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:19:44,195 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:19:44,196 INFO L174 Difference]: Start difference. First operand has 317 places, 343 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:19:44,202 INFO L199 Difference]: Finished difference. Result has 326 places, 351 transitions [2020-01-16 21:19:44,203 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 21:19:44,203 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 326 places, 351 transitions [2020-01-16 21:19:44,203 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 326 places, 351 transitions [2020-01-16 21:19:45,610 INFO L129 PetriNetUnfolder]: 182/1016 cut-off events. [2020-01-16 21:19:45,610 INFO L130 PetriNetUnfolder]: For 328272/328456 co-relation queries the response was YES. [2020-01-16 21:19:45,635 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 21:19:45,641 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 326 places, 0 of 351 transitions, 101 of 22000 flow. [2020-01-16 21:19:45,641 INFO L478 AbstractCegarLoop]: Abstraction has has 325 places, 351 transitions [2020-01-16 21:19:45,641 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:46,585 INFO L129 PetriNetUnfolder]: 182/948 cut-off events. [2020-01-16 21:19:46,586 INFO L130 PetriNetUnfolder]: For 328137/328321 co-relation queries the response was YES. [2020-01-16 21:19:46,586 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:46,586 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:46,586 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 21:19:46,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:46,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2075036475, now seen corresponding path program 34 times [2020-01-16 21:19:46,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:46,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114059252] [2020-01-16 21:19:46,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:46,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:46,753 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114059252] [2020-01-16 21:19:46,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:46,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:19:46,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594462464] [2020-01-16 21:19:46,754 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:19:46,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:46,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:19:46,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:19:46,755 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:19:46,755 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 351 transitions. Second operand 7 states. [2020-01-16 21:19:46,755 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:46,755 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:19:46,755 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:49,208 INFO L129 PetriNetUnfolder]: 202/1107 cut-off events. [2020-01-16 21:19:49,208 INFO L130 PetriNetUnfolder]: For 364476/365053 co-relation queries the response was YES. [2020-01-16 21:19:49,236 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 21:19:49,240 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 155 selfloop transitions, 216 changer transitions [2020-01-16 21:19:49,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:19:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:19:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:19:49,241 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:19:49,241 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:19:49,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:19:49,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:49,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:19:49,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:19:49,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:19:49,242 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:19:49,242 INFO L174 Difference]: Start difference. First operand has 325 places, 351 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:19:49,248 INFO L199 Difference]: Finished difference. Result has 336 places, 373 transitions [2020-01-16 21:19:49,249 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 21:19:49,249 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 336 places, 373 transitions [2020-01-16 21:19:49,249 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 336 places, 373 transitions [2020-01-16 21:19:50,949 INFO L129 PetriNetUnfolder]: 195/1089 cut-off events. [2020-01-16 21:19:50,949 INFO L130 PetriNetUnfolder]: For 373903/374079 co-relation queries the response was YES. [2020-01-16 21:19:50,972 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 21:19:50,978 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 336 places, 0 of 373 transitions, 108 of 24144 flow. [2020-01-16 21:19:50,978 INFO L478 AbstractCegarLoop]: Abstraction has has 335 places, 373 transitions [2020-01-16 21:19:50,979 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:52,195 INFO L129 PetriNetUnfolder]: 195/1015 cut-off events. [2020-01-16 21:19:52,195 INFO L130 PetriNetUnfolder]: For 376616/377033 co-relation queries the response was YES. [2020-01-16 21:19:52,195 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:52,195 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:52,196 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 21:19:52,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:52,196 INFO L82 PathProgramCache]: Analyzing trace with hash -550814245, now seen corresponding path program 35 times [2020-01-16 21:19:52,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:52,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104551715] [2020-01-16 21:19:52,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:52,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104551715] [2020-01-16 21:19:52,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:52,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:19:52,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580555432] [2020-01-16 21:19:52,339 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:19:52,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:52,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:19:52,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:19:52,340 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:19:52,340 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 373 transitions. Second operand 7 states. [2020-01-16 21:19:52,340 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:52,340 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:19:52,340 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:19:55,526 INFO L129 PetriNetUnfolder]: 217/1215 cut-off events. [2020-01-16 21:19:55,526 INFO L130 PetriNetUnfolder]: For 430163/430745 co-relation queries the response was YES. [2020-01-16 21:19:55,552 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 21:19:55,557 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 172 selfloop transitions, 240 changer transitions [2020-01-16 21:19:55,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:19:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:19:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:19:55,558 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:19:55,558 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:19:55,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:19:55,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:19:55,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:19:55,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:19:55,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:19:55,559 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:19:55,559 INFO L174 Difference]: Start difference. First operand has 335 places, 373 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:19:55,566 INFO L199 Difference]: Finished difference. Result has 346 places, 411 transitions [2020-01-16 21:19:55,567 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 21:19:55,567 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 346 places, 411 transitions [2020-01-16 21:19:55,567 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 346 places, 411 transitions [2020-01-16 21:19:57,728 INFO L129 PetriNetUnfolder]: 217/1215 cut-off events. [2020-01-16 21:19:57,728 INFO L130 PetriNetUnfolder]: For 445114/445518 co-relation queries the response was YES. [2020-01-16 21:19:57,760 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 21:19:57,770 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 346 places, 0 of 411 transitions, 120 of 27596 flow. [2020-01-16 21:19:57,770 INFO L478 AbstractCegarLoop]: Abstraction has has 345 places, 411 transitions [2020-01-16 21:19:57,771 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:19:59,290 INFO L129 PetriNetUnfolder]: 217/1130 cut-off events. [2020-01-16 21:19:59,290 INFO L130 PetriNetUnfolder]: For 444533/444851 co-relation queries the response was YES. [2020-01-16 21:19:59,290 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:19:59,290 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:19:59,290 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 21:19:59,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:19:59,290 INFO L82 PathProgramCache]: Analyzing trace with hash -30186183, now seen corresponding path program 1 times [2020-01-16 21:19:59,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:19:59,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390040176] [2020-01-16 21:19:59,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:19:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:19:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:19:59,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390040176] [2020-01-16 21:19:59,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:19:59,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:19:59,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791698849] [2020-01-16 21:19:59,299 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:19:59,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:19:59,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:19:59,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:19:59,299 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 54 [2020-01-16 21:19:59,299 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 411 transitions. Second operand 3 states. [2020-01-16 21:19:59,300 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:19:59,301 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 54 [2020-01-16 21:19:59,301 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:01,922 INFO L129 PetriNetUnfolder]: 119/1052 cut-off events. [2020-01-16 21:20:01,923 INFO L130 PetriNetUnfolder]: For 442547/442707 co-relation queries the response was YES. [2020-01-16 21:20:01,948 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 21:20:01,953 INFO L123 encePairwiseOnDemand]: 52/54 looper letters, 1 selfloop transitions, 2 changer transitions [2020-01-16 21:20:01,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:20:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:20:01,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2020-01-16 21:20:01,955 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2020-01-16 21:20:01,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2020-01-16 21:20:01,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2020-01-16 21:20:01,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:01,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2020-01-16 21:20:01,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:20:01,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:20:01,957 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:20:01,957 INFO L174 Difference]: Start difference. First operand has 345 places, 411 transitions. Second operand 3 states and 147 transitions. [2020-01-16 21:20:01,967 INFO L199 Difference]: Finished difference. Result has 347 places, 409 transitions [2020-01-16 21:20:01,967 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 21:20:01,967 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 347 places, 409 transitions [2020-01-16 21:20:01,968 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 347 places, 409 transitions [2020-01-16 21:20:03,952 INFO L129 PetriNetUnfolder]: 119/1052 cut-off events. [2020-01-16 21:20:03,952 INFO L130 PetriNetUnfolder]: For 444371/444689 co-relation queries the response was YES. [2020-01-16 21:20:03,980 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 21:20:03,987 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 347 places, 0 of 409 transitions, 1 of 27468 flow. [2020-01-16 21:20:03,987 INFO L478 AbstractCegarLoop]: Abstraction has has 346 places, 409 transitions [2020-01-16 21:20:03,987 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:20:05,319 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:20:05,319 INFO L130 PetriNetUnfolder]: For 444371/444689 co-relation queries the response was YES. [2020-01-16 21:20:05,319 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:05,320 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:05,320 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 21:20:05,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:05,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1887198753, now seen corresponding path program 36 times [2020-01-16 21:20:05,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:05,321 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124930763] [2020-01-16 21:20:05,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:05,469 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 21:20:05,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124930763] [2020-01-16 21:20:05,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:05,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:20:05,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942629782] [2020-01-16 21:20:05,470 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:20:05,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:05,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:20:05,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:20:05,471 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:20:05,471 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 409 transitions. Second operand 7 states. [2020-01-16 21:20:05,471 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:05,471 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:20:05,471 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:08,362 INFO L129 PetriNetUnfolder]: 119/1051 cut-off events. [2020-01-16 21:20:08,362 INFO L130 PetriNetUnfolder]: For 455129/455544 co-relation queries the response was YES. [2020-01-16 21:20:08,390 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 21:20:08,395 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 167 selfloop transitions, 241 changer transitions [2020-01-16 21:20:08,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:20:08,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:20:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:20:08,396 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:20:08,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:20:08,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:20:08,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:08,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:20:08,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:20:08,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:20:08,397 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:20:08,397 INFO L174 Difference]: Start difference. First operand has 346 places, 409 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:20:08,404 INFO L199 Difference]: Finished difference. Result has 354 places, 410 transitions [2020-01-16 21:20:08,405 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 21:20:08,405 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 354 places, 410 transitions [2020-01-16 21:20:08,405 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 354 places, 410 transitions [2020-01-16 21:20:10,284 INFO L129 PetriNetUnfolder]: 119/1051 cut-off events. [2020-01-16 21:20:10,284 INFO L130 PetriNetUnfolder]: For 466950/467268 co-relation queries the response was YES. [2020-01-16 21:20:10,304 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 21:20:10,311 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 354 places, 0 of 410 transitions, 120 of 28158 flow. [2020-01-16 21:20:10,311 INFO L478 AbstractCegarLoop]: Abstraction has has 353 places, 410 transitions [2020-01-16 21:20:10,311 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:20:11,641 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:20:11,641 INFO L130 PetriNetUnfolder]: For 466950/467268 co-relation queries the response was YES. [2020-01-16 21:20:11,641 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:11,641 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:11,641 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 21:20:11,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:11,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1998031547, now seen corresponding path program 37 times [2020-01-16 21:20:11,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:11,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688862898] [2020-01-16 21:20:11,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:20:11,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688862898] [2020-01-16 21:20:11,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:11,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:20:11,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026562305] [2020-01-16 21:20:11,784 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:20:11,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:11,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:20:11,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:20:11,785 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:20:11,785 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 410 transitions. Second operand 7 states. [2020-01-16 21:20:11,785 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:11,785 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:20:11,786 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:14,760 INFO L129 PetriNetUnfolder]: 119/1050 cut-off events. [2020-01-16 21:20:14,760 INFO L130 PetriNetUnfolder]: For 478006/478421 co-relation queries the response was YES. [2020-01-16 21:20:14,783 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 21:20:14,787 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 164 selfloop transitions, 245 changer transitions [2020-01-16 21:20:14,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:20:14,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:20:14,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:20:14,788 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:20:14,788 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:20:14,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:20:14,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:14,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:20:14,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:20:14,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:20:14,789 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:20:14,789 INFO L174 Difference]: Start difference. First operand has 353 places, 410 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:20:14,796 INFO L199 Difference]: Finished difference. Result has 361 places, 411 transitions [2020-01-16 21:20:14,797 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 21:20:14,797 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 361 places, 411 transitions [2020-01-16 21:20:14,797 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 361 places, 411 transitions [2020-01-16 21:20:16,774 INFO L129 PetriNetUnfolder]: 119/1050 cut-off events. [2020-01-16 21:20:16,774 INFO L130 PetriNetUnfolder]: For 490060/490397 co-relation queries the response was YES. [2020-01-16 21:20:16,803 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 21:20:16,810 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 361 places, 0 of 411 transitions, 120 of 28754 flow. [2020-01-16 21:20:16,810 INFO L478 AbstractCegarLoop]: Abstraction has has 360 places, 411 transitions [2020-01-16 21:20:16,810 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:20:18,212 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:20:18,212 INFO L130 PetriNetUnfolder]: For 486912/487026 co-relation queries the response was YES. [2020-01-16 21:20:18,212 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:18,213 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:18,213 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 21:20:18,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:18,213 INFO L82 PathProgramCache]: Analyzing trace with hash 592761715, now seen corresponding path program 38 times [2020-01-16 21:20:18,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:18,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486485851] [2020-01-16 21:20:18,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:20:18,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486485851] [2020-01-16 21:20:18,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:18,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:20:18,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640181093] [2020-01-16 21:20:18,342 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:20:18,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:18,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:20:18,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:20:18,343 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:20:18,343 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 411 transitions. Second operand 7 states. [2020-01-16 21:20:18,343 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:18,343 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:20:18,343 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:21,301 INFO L129 PetriNetUnfolder]: 119/1049 cut-off events. [2020-01-16 21:20:21,302 INFO L130 PetriNetUnfolder]: For 505345/506306 co-relation queries the response was YES. [2020-01-16 21:20:21,330 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 21:20:21,334 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 148 selfloop transitions, 258 changer transitions [2020-01-16 21:20:21,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:20:21,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:20:21,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:20:21,336 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:20:21,336 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:20:21,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:20:21,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:21,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:20:21,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:20:21,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:20:21,337 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:20:21,338 INFO L174 Difference]: Start difference. First operand has 360 places, 411 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:20:21,345 INFO L199 Difference]: Finished difference. Result has 367 places, 411 transitions [2020-01-16 21:20:21,346 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 21:20:21,346 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 367 places, 411 transitions [2020-01-16 21:20:21,346 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 367 places, 411 transitions [2020-01-16 21:20:23,347 INFO L129 PetriNetUnfolder]: 119/1049 cut-off events. [2020-01-16 21:20:23,347 INFO L130 PetriNetUnfolder]: For 510347/510461 co-relation queries the response was YES. [2020-01-16 21:20:23,376 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 21:20:23,383 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 367 places, 0 of 411 transitions, 120 of 29270 flow. [2020-01-16 21:20:23,384 INFO L478 AbstractCegarLoop]: Abstraction has has 366 places, 411 transitions [2020-01-16 21:20:23,384 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:20:24,750 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:20:24,750 INFO L130 PetriNetUnfolder]: For 510347/510461 co-relation queries the response was YES. [2020-01-16 21:20:24,750 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:24,750 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:24,751 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 21:20:24,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:24,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1618963713, now seen corresponding path program 39 times [2020-01-16 21:20:24,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:24,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324084732] [2020-01-16 21:20:24,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:20:24,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324084732] [2020-01-16 21:20:24,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:24,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:20:24,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320730492] [2020-01-16 21:20:24,947 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:20:24,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:24,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:20:24,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:20:24,948 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:20:24,948 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 411 transitions. Second operand 7 states. [2020-01-16 21:20:24,948 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:24,948 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:20:24,948 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:28,107 INFO L129 PetriNetUnfolder]: 119/1048 cut-off events. [2020-01-16 21:20:28,107 INFO L130 PetriNetUnfolder]: For 529729/530690 co-relation queries the response was YES. [2020-01-16 21:20:28,129 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 21:20:28,134 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 166 selfloop transitions, 249 changer transitions [2020-01-16 21:20:28,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:20:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:20:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:20:28,135 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:20:28,135 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:20:28,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:20:28,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:28,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:20:28,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:20:28,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:20:28,136 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:20:28,136 INFO L174 Difference]: Start difference. First operand has 366 places, 411 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:20:28,143 INFO L199 Difference]: Finished difference. Result has 374 places, 415 transitions [2020-01-16 21:20:28,144 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 21:20:28,144 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 374 places, 415 transitions [2020-01-16 21:20:28,144 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 374 places, 415 transitions [2020-01-16 21:20:30,202 INFO L129 PetriNetUnfolder]: 119/1048 cut-off events. [2020-01-16 21:20:30,203 INFO L130 PetriNetUnfolder]: For 535547/535664 co-relation queries the response was YES. [2020-01-16 21:20:30,232 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 21:20:30,240 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 374 places, 0 of 415 transitions, 120 of 30066 flow. [2020-01-16 21:20:30,240 INFO L478 AbstractCegarLoop]: Abstraction has has 373 places, 415 transitions [2020-01-16 21:20:30,240 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:20:31,661 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:20:31,662 INFO L130 PetriNetUnfolder]: For 535614/535739 co-relation queries the response was YES. [2020-01-16 21:20:31,662 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:31,662 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:31,662 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 21:20:31,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:31,662 INFO L82 PathProgramCache]: Analyzing trace with hash -721209453, now seen corresponding path program 40 times [2020-01-16 21:20:31,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:31,663 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487899037] [2020-01-16 21:20:31,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:20:31,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487899037] [2020-01-16 21:20:31,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:31,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:20:31,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301881789] [2020-01-16 21:20:31,832 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:20:31,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:31,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:20:31,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:20:31,832 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:20:31,833 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 415 transitions. Second operand 7 states. [2020-01-16 21:20:31,833 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:31,833 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:20:31,833 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:35,276 INFO L129 PetriNetUnfolder]: 119/1047 cut-off events. [2020-01-16 21:20:35,276 INFO L130 PetriNetUnfolder]: For 555351/556324 co-relation queries the response was YES. [2020-01-16 21:20:35,306 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 21:20:35,311 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 173 selfloop transitions, 240 changer transitions [2020-01-16 21:20:35,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:20:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:20:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:20:35,312 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:20:35,312 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:20:35,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:20:35,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:35,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:20:35,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:20:35,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:20:35,313 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:20:35,313 INFO L174 Difference]: Start difference. First operand has 373 places, 415 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:20:35,320 INFO L199 Difference]: Finished difference. Result has 381 places, 416 transitions [2020-01-16 21:20:35,321 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 21:20:35,321 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 381 places, 416 transitions [2020-01-16 21:20:35,321 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 381 places, 416 transitions [2020-01-16 21:20:37,405 INFO L129 PetriNetUnfolder]: 119/1047 cut-off events. [2020-01-16 21:20:37,405 INFO L130 PetriNetUnfolder]: For 560055/560180 co-relation queries the response was YES. [2020-01-16 21:20:37,435 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 21:20:37,443 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 381 places, 0 of 416 transitions, 120 of 30619 flow. [2020-01-16 21:20:37,443 INFO L478 AbstractCegarLoop]: Abstraction has has 380 places, 416 transitions [2020-01-16 21:20:37,443 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:20:38,925 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:20:38,926 INFO L130 PetriNetUnfolder]: For 560055/560180 co-relation queries the response was YES. [2020-01-16 21:20:38,926 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:38,926 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:38,926 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 21:20:38,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:38,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1441691037, now seen corresponding path program 41 times [2020-01-16 21:20:38,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:38,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168593526] [2020-01-16 21:20:38,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:20:39,091 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168593526] [2020-01-16 21:20:39,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:39,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:20:39,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343281567] [2020-01-16 21:20:39,092 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:20:39,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:39,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:20:39,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:20:39,093 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:20:39,093 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 416 transitions. Second operand 7 states. [2020-01-16 21:20:39,093 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:39,093 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:20:39,093 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:42,295 INFO L129 PetriNetUnfolder]: 119/1046 cut-off events. [2020-01-16 21:20:42,296 INFO L130 PetriNetUnfolder]: For 580162/581135 co-relation queries the response was YES. [2020-01-16 21:20:42,319 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 21:20:42,324 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 180 selfloop transitions, 244 changer transitions [2020-01-16 21:20:42,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:20:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:20:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:20:42,325 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:20:42,325 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:20:42,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:20:42,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:42,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:20:42,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:20:42,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:20:42,326 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:20:42,326 INFO L174 Difference]: Start difference. First operand has 380 places, 416 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:20:42,334 INFO L199 Difference]: Finished difference. Result has 390 places, 424 transitions [2020-01-16 21:20:42,335 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 21:20:42,335 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 390 places, 424 transitions [2020-01-16 21:20:42,335 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 390 places, 424 transitions [2020-01-16 21:20:44,533 INFO L129 PetriNetUnfolder]: 119/1046 cut-off events. [2020-01-16 21:20:44,533 INFO L130 PetriNetUnfolder]: For 587781/587906 co-relation queries the response was YES. [2020-01-16 21:20:44,564 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 21:20:44,572 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 390 places, 0 of 424 transitions, 120 of 31741 flow. [2020-01-16 21:20:44,572 INFO L478 AbstractCegarLoop]: Abstraction has has 389 places, 424 transitions [2020-01-16 21:20:44,572 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:20:46,133 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:20:46,133 INFO L130 PetriNetUnfolder]: For 587712/587829 co-relation queries the response was YES. [2020-01-16 21:20:46,133 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:46,133 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:46,133 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 21:20:46,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:46,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1966413917, now seen corresponding path program 42 times [2020-01-16 21:20:46,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:46,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106550980] [2020-01-16 21:20:46,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:46,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:20:46,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106550980] [2020-01-16 21:20:46,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:46,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:20:46,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68849865] [2020-01-16 21:20:46,309 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:20:46,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:46,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:20:46,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:20:46,310 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:20:46,310 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 424 transitions. Second operand 7 states. [2020-01-16 21:20:46,310 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:46,311 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:20:46,311 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:49,599 INFO L129 PetriNetUnfolder]: 119/1045 cut-off events. [2020-01-16 21:20:49,599 INFO L130 PetriNetUnfolder]: For 603807/604262 co-relation queries the response was YES. [2020-01-16 21:20:49,630 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 21:20:49,636 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 179 selfloop transitions, 244 changer transitions [2020-01-16 21:20:49,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:20:49,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:20:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:20:49,637 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:20:49,637 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:20:49,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:20:49,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:49,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:20:49,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:20:49,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:20:49,638 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:20:49,638 INFO L174 Difference]: Start difference. First operand has 389 places, 424 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:20:49,647 INFO L199 Difference]: Finished difference. Result has 398 places, 426 transitions [2020-01-16 21:20:49,647 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 21:20:49,647 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 398 places, 426 transitions [2020-01-16 21:20:49,648 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 398 places, 426 transitions [2020-01-16 21:20:51,611 INFO L129 PetriNetUnfolder]: 119/1045 cut-off events. [2020-01-16 21:20:51,611 INFO L130 PetriNetUnfolder]: For 614404/614521 co-relation queries the response was YES. [2020-01-16 21:20:51,637 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 21:20:51,645 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 398 places, 0 of 426 transitions, 120 of 32451 flow. [2020-01-16 21:20:51,645 INFO L478 AbstractCegarLoop]: Abstraction has has 397 places, 426 transitions [2020-01-16 21:20:51,645 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:20:53,225 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:20:53,226 INFO L130 PetriNetUnfolder]: For 614957/615123 co-relation queries the response was YES. [2020-01-16 21:20:53,226 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:20:53,226 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:20:53,226 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 21:20:53,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:20:53,226 INFO L82 PathProgramCache]: Analyzing trace with hash 438350239, now seen corresponding path program 43 times [2020-01-16 21:20:53,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:20:53,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716332377] [2020-01-16 21:20:53,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:20:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:20:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:20:53,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716332377] [2020-01-16 21:20:53,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:20:53,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:20:53,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229325079] [2020-01-16 21:20:53,450 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:20:53,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:20:53,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:20:53,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:20:53,452 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:20:53,452 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 426 transitions. Second operand 7 states. [2020-01-16 21:20:53,452 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:20:53,452 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:20:53,453 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:20:56,795 INFO L129 PetriNetUnfolder]: 119/1044 cut-off events. [2020-01-16 21:20:56,795 INFO L130 PetriNetUnfolder]: For 630827/631282 co-relation queries the response was YES. [2020-01-16 21:20:56,824 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 21:20:56,830 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 178 selfloop transitions, 242 changer transitions [2020-01-16 21:20:56,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:20:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:20:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:20:56,831 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:20:56,831 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:20:56,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:20:56,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:20:56,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:20:56,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:20:56,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:20:56,832 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:20:56,832 INFO L174 Difference]: Start difference. First operand has 397 places, 426 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:20:56,844 INFO L199 Difference]: Finished difference. Result has 404 places, 426 transitions [2020-01-16 21:20:56,845 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 21:20:56,845 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 404 places, 426 transitions [2020-01-16 21:20:56,845 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 404 places, 426 transitions [2020-01-16 21:20:59,145 INFO L129 PetriNetUnfolder]: 119/1044 cut-off events. [2020-01-16 21:20:59,145 INFO L130 PetriNetUnfolder]: For 640256/640414 co-relation queries the response was YES. [2020-01-16 21:20:59,178 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 21:20:59,186 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 404 places, 0 of 426 transitions, 120 of 32935 flow. [2020-01-16 21:20:59,186 INFO L478 AbstractCegarLoop]: Abstraction has has 403 places, 426 transitions [2020-01-16 21:20:59,186 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:21:01,154 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:21:01,155 INFO L130 PetriNetUnfolder]: For 639706/639818 co-relation queries the response was YES. [2020-01-16 21:21:01,155 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:21:01,155 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:21:01,155 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 21:21:01,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:21:01,155 INFO L82 PathProgramCache]: Analyzing trace with hash 65518797, now seen corresponding path program 44 times [2020-01-16 21:21:01,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:21:01,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732979579] [2020-01-16 21:21:01,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:21:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:21:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:21:01,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732979579] [2020-01-16 21:21:01,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:21:01,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:21:01,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486609593] [2020-01-16 21:21:01,320 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:21:01,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:21:01,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:21:01,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:21:01,321 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:21:01,321 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 426 transitions. Second operand 7 states. [2020-01-16 21:21:01,321 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:21:01,321 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:21:01,321 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:21:04,686 INFO L129 PetriNetUnfolder]: 119/1043 cut-off events. [2020-01-16 21:21:04,686 INFO L130 PetriNetUnfolder]: For 656202/656646 co-relation queries the response was YES. [2020-01-16 21:21:04,711 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 21:21:04,716 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 181 selfloop transitions, 244 changer transitions [2020-01-16 21:21:04,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:21:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:21:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:21:04,717 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:21:04,717 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:21:04,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:21:04,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:21:04,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:21:04,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:21:04,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:21:04,718 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:21:04,718 INFO L174 Difference]: Start difference. First operand has 403 places, 426 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:21:04,729 INFO L199 Difference]: Finished difference. Result has 411 places, 427 transitions [2020-01-16 21:21:04,730 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 21:21:04,730 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 411 places, 427 transitions [2020-01-16 21:21:04,730 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 411 places, 427 transitions [2020-01-16 21:21:07,069 INFO L129 PetriNetUnfolder]: 119/1043 cut-off events. [2020-01-16 21:21:07,069 INFO L130 PetriNetUnfolder]: For 667196/667308 co-relation queries the response was YES. [2020-01-16 21:21:07,102 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 21:21:07,110 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 411 places, 0 of 427 transitions, 120 of 33562 flow. [2020-01-16 21:21:07,110 INFO L478 AbstractCegarLoop]: Abstraction has has 410 places, 427 transitions [2020-01-16 21:21:07,110 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:21:08,764 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:21:08,764 INFO L130 PetriNetUnfolder]: For 667196/667308 co-relation queries the response was YES. [2020-01-16 21:21:08,764 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:21:08,764 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:21:08,765 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 21:21:08,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:21:08,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1888859967, now seen corresponding path program 45 times [2020-01-16 21:21:08,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:21:08,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855837229] [2020-01-16 21:21:08,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:21:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:21:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:21:08,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855837229] [2020-01-16 21:21:08,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:21:08,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:21:08,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551964507] [2020-01-16 21:21:08,907 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:21:08,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:21:08,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:21:08,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:21:08,908 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:21:08,908 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 427 transitions. Second operand 7 states. [2020-01-16 21:21:08,908 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:21:08,908 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:21:08,909 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:21:12,405 INFO L129 PetriNetUnfolder]: 119/1042 cut-off events. [2020-01-16 21:21:12,405 INFO L130 PetriNetUnfolder]: For 683970/684414 co-relation queries the response was YES. [2020-01-16 21:21:12,438 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 21:21:12,443 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 164 selfloop transitions, 259 changer transitions [2020-01-16 21:21:12,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:21:12,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:21:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:21:12,445 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:21:12,445 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:21:12,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:21:12,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:21:12,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:21:12,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:21:12,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:21:12,446 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:21:12,446 INFO L174 Difference]: Start difference. First operand has 410 places, 427 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:21:12,454 INFO L199 Difference]: Finished difference. Result has 418 places, 428 transitions [2020-01-16 21:21:12,455 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 21:21:12,455 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 418 places, 428 transitions [2020-01-16 21:21:12,455 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 418 places, 428 transitions [2020-01-16 21:21:14,336 INFO L129 PetriNetUnfolder]: 119/1042 cut-off events. [2020-01-16 21:21:14,336 INFO L130 PetriNetUnfolder]: For 695220/695324 co-relation queries the response was YES. [2020-01-16 21:21:14,364 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 21:21:14,374 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 418 places, 0 of 428 transitions, 120 of 34253 flow. [2020-01-16 21:21:14,374 INFO L478 AbstractCegarLoop]: Abstraction has has 417 places, 428 transitions [2020-01-16 21:21:14,374 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:21:16,053 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:21:16,053 INFO L130 PetriNetUnfolder]: For 695220/695324 co-relation queries the response was YES. [2020-01-16 21:21:16,053 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:21:16,053 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:21:16,053 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 21:21:16,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:21:16,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1191800435, now seen corresponding path program 46 times [2020-01-16 21:21:16,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:21:16,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289800642] [2020-01-16 21:21:16,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:21:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:21:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:21:16,192 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289800642] [2020-01-16 21:21:16,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:21:16,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:21:16,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748202123] [2020-01-16 21:21:16,193 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:21:16,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:21:16,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:21:16,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:21:16,194 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:21:16,194 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 428 transitions. Second operand 7 states. [2020-01-16 21:21:16,194 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:21:16,194 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:21:16,194 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:21:19,702 INFO L129 PetriNetUnfolder]: 119/1041 cut-off events. [2020-01-16 21:21:19,702 INFO L130 PetriNetUnfolder]: For 711995/712408 co-relation queries the response was YES. [2020-01-16 21:21:19,734 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 21:21:19,740 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 174 selfloop transitions, 250 changer transitions [2020-01-16 21:21:19,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:21:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:21:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:21:19,741 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:21:19,741 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:21:19,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:21:19,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:21:19,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:21:19,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:21:19,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:21:19,743 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:21:19,743 INFO L174 Difference]: Start difference. First operand has 417 places, 428 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:21:19,753 INFO L199 Difference]: Finished difference. Result has 424 places, 428 transitions [2020-01-16 21:21:19,754 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 21:21:19,754 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 424 places, 428 transitions [2020-01-16 21:21:19,754 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 424 places, 428 transitions [2020-01-16 21:21:22,148 INFO L129 PetriNetUnfolder]: 119/1041 cut-off events. [2020-01-16 21:21:22,148 INFO L130 PetriNetUnfolder]: For 722391/722499 co-relation queries the response was YES. [2020-01-16 21:21:22,173 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 21:21:22,181 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 424 places, 0 of 428 transitions, 120 of 34753 flow. [2020-01-16 21:21:22,181 INFO L478 AbstractCegarLoop]: Abstraction has has 423 places, 428 transitions [2020-01-16 21:21:22,181 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:21:23,885 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:21:23,886 INFO L130 PetriNetUnfolder]: For 722391/722499 co-relation queries the response was YES. [2020-01-16 21:21:23,886 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:21:23,886 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:21:23,886 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 21:21:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:21:23,886 INFO L82 PathProgramCache]: Analyzing trace with hash 784146067, now seen corresponding path program 47 times [2020-01-16 21:21:23,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:21:23,887 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165493425] [2020-01-16 21:21:23,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:21:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:21:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:21:24,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165493425] [2020-01-16 21:21:24,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:21:24,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:21:24,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531557671] [2020-01-16 21:21:24,028 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:21:24,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:21:24,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:21:24,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:21:24,029 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:21:24,029 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 428 transitions. Second operand 7 states. [2020-01-16 21:21:24,030 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:21:24,030 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:21:24,030 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:21:27,445 INFO L129 PetriNetUnfolder]: 119/1040 cut-off events. [2020-01-16 21:21:27,446 INFO L130 PetriNetUnfolder]: For 739564/739984 co-relation queries the response was YES. [2020-01-16 21:21:27,477 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 21:21:27,482 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 184 selfloop transitions, 248 changer transitions [2020-01-16 21:21:27,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:21:27,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:21:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:21:27,483 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:21:27,483 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:21:27,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:21:27,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:21:27,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:21:27,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:21:27,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:21:27,485 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:21:27,485 INFO L174 Difference]: Start difference. First operand has 423 places, 428 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:21:27,493 INFO L199 Difference]: Finished difference. Result has 431 places, 434 transitions [2020-01-16 21:21:27,494 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 21:21:27,494 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 431 places, 434 transitions [2020-01-16 21:21:27,494 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 431 places, 434 transitions [2020-01-16 21:21:29,951 INFO L129 PetriNetUnfolder]: 119/1040 cut-off events. [2020-01-16 21:21:29,951 INFO L130 PetriNetUnfolder]: For 751553/751662 co-relation queries the response was YES. [2020-01-16 21:21:29,986 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 21:21:29,994 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 431 places, 0 of 434 transitions, 120 of 35775 flow. [2020-01-16 21:21:29,994 INFO L478 AbstractCegarLoop]: Abstraction has has 430 places, 434 transitions [2020-01-16 21:21:29,995 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:21:32,071 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:21:32,072 INFO L130 PetriNetUnfolder]: For 751475/751584 co-relation queries the response was YES. [2020-01-16 21:21:32,072 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:21:32,072 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:21:32,072 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 21:21:32,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:21:32,072 INFO L82 PathProgramCache]: Analyzing trace with hash 543974085, now seen corresponding path program 48 times [2020-01-16 21:21:32,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:21:32,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151258233] [2020-01-16 21:21:32,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:21:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:21:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:21:32,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151258233] [2020-01-16 21:21:32,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:21:32,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:21:32,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962965277] [2020-01-16 21:21:32,210 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:21:32,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:21:32,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:21:32,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:21:32,210 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:21:32,211 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 434 transitions. Second operand 7 states. [2020-01-16 21:21:32,211 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:21:32,211 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:21:32,211 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:21:35,660 INFO L129 PetriNetUnfolder]: 119/1039 cut-off events. [2020-01-16 21:21:35,660 INFO L130 PetriNetUnfolder]: For 769128/769569 co-relation queries the response was YES. [2020-01-16 21:21:35,688 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 21:21:35,693 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 186 selfloop transitions, 246 changer transitions [2020-01-16 21:21:35,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:21:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:21:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:21:35,694 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:21:35,694 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:21:35,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:21:35,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:21:35,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:21:35,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:21:35,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:21:35,696 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:21:35,696 INFO L174 Difference]: Start difference. First operand has 430 places, 434 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:21:35,705 INFO L199 Difference]: Finished difference. Result has 437 places, 434 transitions [2020-01-16 21:21:35,705 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 21:21:35,706 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 437 places, 434 transitions [2020-01-16 21:21:35,706 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 437 places, 434 transitions [2020-01-16 21:21:38,171 INFO L129 PetriNetUnfolder]: 119/1039 cut-off events. [2020-01-16 21:21:38,171 INFO L130 PetriNetUnfolder]: For 779109/779205 co-relation queries the response was YES. [2020-01-16 21:21:38,205 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 21:21:38,214 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 437 places, 0 of 434 transitions, 120 of 36267 flow. [2020-01-16 21:21:38,214 INFO L478 AbstractCegarLoop]: Abstraction has has 436 places, 434 transitions [2020-01-16 21:21:38,214 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:21:39,936 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:21:39,937 INFO L130 PetriNetUnfolder]: For 779762/779911 co-relation queries the response was YES. [2020-01-16 21:21:39,937 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:21:39,937 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:21:39,937 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 21:21:39,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:21:39,937 INFO L82 PathProgramCache]: Analyzing trace with hash -604536729, now seen corresponding path program 49 times [2020-01-16 21:21:39,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:21:39,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179069633] [2020-01-16 21:21:39,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:21:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:21:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:21:40,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179069633] [2020-01-16 21:21:40,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:21:40,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:21:40,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343687301] [2020-01-16 21:21:40,133 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:21:40,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:21:40,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:21:40,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:21:40,134 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:21:40,134 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 434 transitions. Second operand 7 states. [2020-01-16 21:21:40,134 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:21:40,135 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:21:40,135 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:21:43,771 INFO L129 PetriNetUnfolder]: 119/1038 cut-off events. [2020-01-16 21:21:43,771 INFO L130 PetriNetUnfolder]: For 796660/797042 co-relation queries the response was YES. [2020-01-16 21:21:43,797 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 21:21:43,803 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 250 changer transitions [2020-01-16 21:21:43,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:21:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:21:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:21:43,804 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:21:43,804 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:21:43,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:21:43,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:21:43,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:21:43,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:21:43,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:21:43,805 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:21:43,805 INFO L174 Difference]: Start difference. First operand has 436 places, 434 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:21:43,814 INFO L199 Difference]: Finished difference. Result has 444 places, 436 transitions [2020-01-16 21:21:43,815 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 21:21:43,815 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 444 places, 436 transitions [2020-01-16 21:21:43,815 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 444 places, 436 transitions [2020-01-16 21:21:46,324 INFO L129 PetriNetUnfolder]: 119/1038 cut-off events. [2020-01-16 21:21:46,324 INFO L130 PetriNetUnfolder]: For 809003/809152 co-relation queries the response was YES. [2020-01-16 21:21:46,365 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 21:21:46,374 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 444 places, 0 of 436 transitions, 120 of 36945 flow. [2020-01-16 21:21:46,374 INFO L478 AbstractCegarLoop]: Abstraction has has 443 places, 436 transitions [2020-01-16 21:21:46,374 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:21:47,935 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:21:47,935 INFO L130 PetriNetUnfolder]: For 809003/809152 co-relation queries the response was YES. [2020-01-16 21:21:47,935 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:21:47,935 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:21:47,935 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 21:21:47,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:21:47,935 INFO L82 PathProgramCache]: Analyzing trace with hash 787664151, now seen corresponding path program 50 times [2020-01-16 21:21:47,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:21:47,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272013154] [2020-01-16 21:21:47,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:21:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:21:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:21:48,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272013154] [2020-01-16 21:21:48,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:21:48,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:21:48,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633038169] [2020-01-16 21:21:48,082 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:21:48,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:21:48,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:21:48,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:21:48,083 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:21:48,083 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 436 transitions. Second operand 7 states. [2020-01-16 21:21:48,083 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:21:48,083 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:21:48,083 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:21:51,791 INFO L129 PetriNetUnfolder]: 119/1037 cut-off events. [2020-01-16 21:21:51,791 INFO L130 PetriNetUnfolder]: For 826742/827286 co-relation queries the response was YES. [2020-01-16 21:21:51,817 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 21:21:51,823 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 170 selfloop transitions, 259 changer transitions [2020-01-16 21:21:51,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:21:51,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:21:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:21:51,824 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:21:51,824 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:21:51,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:21:51,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:21:51,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:21:51,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:21:51,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:21:51,825 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:21:51,825 INFO L174 Difference]: Start difference. First operand has 443 places, 436 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:21:51,834 INFO L199 Difference]: Finished difference. Result has 450 places, 436 transitions [2020-01-16 21:21:51,835 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 21:21:51,835 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 450 places, 436 transitions [2020-01-16 21:21:51,835 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 450 places, 436 transitions [2020-01-16 21:21:54,373 INFO L129 PetriNetUnfolder]: 119/1037 cut-off events. [2020-01-16 21:21:54,373 INFO L130 PetriNetUnfolder]: For 838433/838582 co-relation queries the response was YES. [2020-01-16 21:21:54,409 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 21:21:54,417 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 450 places, 0 of 436 transitions, 120 of 37463 flow. [2020-01-16 21:21:54,418 INFO L478 AbstractCegarLoop]: Abstraction has has 449 places, 436 transitions [2020-01-16 21:21:54,418 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:21:56,018 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:21:56,019 INFO L130 PetriNetUnfolder]: For 838433/838582 co-relation queries the response was YES. [2020-01-16 21:21:56,019 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:21:56,019 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:21:56,019 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 21:21:56,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:21:56,019 INFO L82 PathProgramCache]: Analyzing trace with hash 634677087, now seen corresponding path program 51 times [2020-01-16 21:21:56,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:21:56,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337702167] [2020-01-16 21:21:56,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:21:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:21:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:21:56,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337702167] [2020-01-16 21:21:56,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:21:56,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:21:56,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179568466] [2020-01-16 21:21:56,192 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:21:56,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:21:56,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:21:56,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:21:56,193 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:21:56,193 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 436 transitions. Second operand 7 states. [2020-01-16 21:21:56,193 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:21:56,193 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:21:56,193 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:22:00,573 INFO L129 PetriNetUnfolder]: 119/1036 cut-off events. [2020-01-16 21:22:00,573 INFO L130 PetriNetUnfolder]: For 856443/856987 co-relation queries the response was YES. [2020-01-16 21:22:00,601 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 21:22:00,607 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 179 selfloop transitions, 255 changer transitions [2020-01-16 21:22:00,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:22:00,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:22:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:22:00,608 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:22:00,608 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:22:00,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:22:00,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:22:00,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:22:00,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:22:00,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:22:00,609 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:22:00,609 INFO L174 Difference]: Start difference. First operand has 449 places, 436 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:22:00,618 INFO L199 Difference]: Finished difference. Result has 456 places, 436 transitions [2020-01-16 21:22:00,619 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 21:22:00,619 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 456 places, 436 transitions [2020-01-16 21:22:00,619 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 456 places, 436 transitions [2020-01-16 21:22:03,188 INFO L129 PetriNetUnfolder]: 119/1036 cut-off events. [2020-01-16 21:22:03,189 INFO L130 PetriNetUnfolder]: For 867571/867705 co-relation queries the response was YES. [2020-01-16 21:22:03,224 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 21:22:03,233 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 456 places, 0 of 436 transitions, 120 of 37973 flow. [2020-01-16 21:22:03,233 INFO L478 AbstractCegarLoop]: Abstraction has has 455 places, 436 transitions [2020-01-16 21:22:03,233 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:22:04,840 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:22:04,840 INFO L130 PetriNetUnfolder]: For 867571/867705 co-relation queries the response was YES. [2020-01-16 21:22:04,840 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:22:04,840 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:22:04,841 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 21:22:04,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:22:04,841 INFO L82 PathProgramCache]: Analyzing trace with hash 577387645, now seen corresponding path program 52 times [2020-01-16 21:22:04,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:22:04,841 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105057021] [2020-01-16 21:22:04,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:22:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:22:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:22:04,992 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105057021] [2020-01-16 21:22:04,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:22:04,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:22:04,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102347144] [2020-01-16 21:22:04,993 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:22:04,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:22:04,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:22:04,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:22:04,994 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:22:04,994 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 436 transitions. Second operand 7 states. [2020-01-16 21:22:04,994 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:22:04,994 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:22:04,994 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:22:08,843 INFO L129 PetriNetUnfolder]: 119/1035 cut-off events. [2020-01-16 21:22:08,844 INFO L130 PetriNetUnfolder]: For 886050/886594 co-relation queries the response was YES. [2020-01-16 21:22:08,872 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 21:22:08,878 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 175 selfloop transitions, 258 changer transitions [2020-01-16 21:22:08,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:22:08,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:22:08,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:22:08,879 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:22:08,879 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:22:08,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:22:08,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:22:08,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:22:08,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:22:08,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:22:08,880 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:22:08,880 INFO L174 Difference]: Start difference. First operand has 455 places, 436 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:22:08,890 INFO L199 Difference]: Finished difference. Result has 464 places, 439 transitions [2020-01-16 21:22:08,890 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 21:22:08,890 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 464 places, 439 transitions [2020-01-16 21:22:08,890 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 464 places, 439 transitions [2020-01-16 21:22:11,530 INFO L129 PetriNetUnfolder]: 119/1035 cut-off events. [2020-01-16 21:22:11,531 INFO L130 PetriNetUnfolder]: For 900081/900215 co-relation queries the response was YES. [2020-01-16 21:22:11,567 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 21:22:11,576 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 464 places, 0 of 439 transitions, 120 of 38812 flow. [2020-01-16 21:22:11,576 INFO L478 AbstractCegarLoop]: Abstraction has has 463 places, 439 transitions [2020-01-16 21:22:11,576 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:22:13,373 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:22:13,374 INFO L130 PetriNetUnfolder]: For 900081/900215 co-relation queries the response was YES. [2020-01-16 21:22:13,374 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:22:13,374 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:22:13,374 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 21:22:13,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:22:13,374 INFO L82 PathProgramCache]: Analyzing trace with hash -934738367, now seen corresponding path program 53 times [2020-01-16 21:22:13,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:22:13,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167648689] [2020-01-16 21:22:13,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:22:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:22:13,516 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 21:22:13,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167648689] [2020-01-16 21:22:13,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:22:13,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:22:13,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245224470] [2020-01-16 21:22:13,518 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:22:13,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:22:13,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:22:13,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:22:13,519 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:22:13,519 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 439 transitions. Second operand 7 states. [2020-01-16 21:22:13,519 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:22:13,519 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:22:13,519 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:22:17,236 INFO L129 PetriNetUnfolder]: 119/1034 cut-off events. [2020-01-16 21:22:17,236 INFO L130 PetriNetUnfolder]: For 918872/919416 co-relation queries the response was YES. [2020-01-16 21:22:17,266 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 21:22:17,272 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 186 selfloop transitions, 251 changer transitions [2020-01-16 21:22:17,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:22:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:22:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:22:17,273 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:22:17,274 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:22:17,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:22:17,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:22:17,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:22:17,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:22:17,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:22:17,275 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:22:17,275 INFO L174 Difference]: Start difference. First operand has 463 places, 439 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:22:17,284 INFO L199 Difference]: Finished difference. Result has 471 places, 443 transitions [2020-01-16 21:22:17,285 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 21:22:17,285 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 471 places, 443 transitions [2020-01-16 21:22:17,285 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 471 places, 443 transitions [2020-01-16 21:22:19,939 INFO L129 PetriNetUnfolder]: 119/1034 cut-off events. [2020-01-16 21:22:19,940 INFO L130 PetriNetUnfolder]: For 931909/932043 co-relation queries the response was YES. [2020-01-16 21:22:19,976 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 21:22:19,986 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 471 places, 0 of 443 transitions, 120 of 39623 flow. [2020-01-16 21:22:19,986 INFO L478 AbstractCegarLoop]: Abstraction has has 470 places, 443 transitions [2020-01-16 21:22:19,986 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:22:21,894 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:22:21,894 INFO L130 PetriNetUnfolder]: For 931909/932043 co-relation queries the response was YES. [2020-01-16 21:22:21,894 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:22:21,894 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:22:21,894 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 21:22:21,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:22:21,894 INFO L82 PathProgramCache]: Analyzing trace with hash -445753791, now seen corresponding path program 54 times [2020-01-16 21:22:21,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:22:21,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527182083] [2020-01-16 21:22:21,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:22:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:22:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:22:22,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527182083] [2020-01-16 21:22:22,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:22:22,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:22:22,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129664121] [2020-01-16 21:22:22,047 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:22:22,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:22:22,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:22:22,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:22:22,047 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:22:22,048 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 443 transitions. Second operand 7 states. [2020-01-16 21:22:22,048 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:22:22,048 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:22:22,048 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:22:26,014 INFO L129 PetriNetUnfolder]: 119/1033 cut-off events. [2020-01-16 21:22:26,015 INFO L130 PetriNetUnfolder]: For 950974/951518 co-relation queries the response was YES. [2020-01-16 21:22:26,049 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 21:22:26,055 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 184 selfloop transitions, 256 changer transitions [2020-01-16 21:22:26,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:22:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:22:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:22:26,057 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:22:26,057 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:22:26,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:22:26,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:22:26,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:22:26,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:22:26,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:22:26,058 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:22:26,059 INFO L174 Difference]: Start difference. First operand has 470 places, 443 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:22:26,069 INFO L199 Difference]: Finished difference. Result has 477 places, 443 transitions [2020-01-16 21:22:26,069 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 21:22:26,069 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 477 places, 443 transitions [2020-01-16 21:22:26,069 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 477 places, 443 transitions [2020-01-16 21:22:28,667 INFO L129 PetriNetUnfolder]: 119/1033 cut-off events. [2020-01-16 21:22:28,667 INFO L130 PetriNetUnfolder]: For 962662/962796 co-relation queries the response was YES. [2020-01-16 21:22:28,695 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 21:22:28,704 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 477 places, 0 of 443 transitions, 120 of 40135 flow. [2020-01-16 21:22:28,704 INFO L478 AbstractCegarLoop]: Abstraction has has 476 places, 443 transitions [2020-01-16 21:22:28,705 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:22:30,691 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:22:30,691 INFO L130 PetriNetUnfolder]: For 962662/962796 co-relation queries the response was YES. [2020-01-16 21:22:30,691 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:22:30,692 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:22:30,692 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 21:22:30,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:22:30,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1573468097, now seen corresponding path program 55 times [2020-01-16 21:22:30,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:22:30,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69148720] [2020-01-16 21:22:30,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:22:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:22:30,839 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 21:22:30,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69148720] [2020-01-16 21:22:30,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:22:30,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:22:30,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551572262] [2020-01-16 21:22:30,841 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:22:30,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:22:30,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:22:30,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:22:30,841 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:22:30,841 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 443 transitions. Second operand 7 states. [2020-01-16 21:22:30,841 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:22:30,842 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:22:30,842 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:22:35,035 INFO L129 PetriNetUnfolder]: 119/1032 cut-off events. [2020-01-16 21:22:35,035 INFO L130 PetriNetUnfolder]: For 981759/982290 co-relation queries the response was YES. [2020-01-16 21:22:35,071 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 21:22:35,078 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 178 selfloop transitions, 259 changer transitions [2020-01-16 21:22:35,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:22:35,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:22:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:22:35,079 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:22:35,079 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:22:35,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:22:35,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:22:35,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:22:35,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:22:35,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:22:35,080 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:22:35,080 INFO L174 Difference]: Start difference. First operand has 476 places, 443 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:22:35,090 INFO L199 Difference]: Finished difference. Result has 483 places, 443 transitions [2020-01-16 21:22:35,090 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 21:22:35,090 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 483 places, 443 transitions [2020-01-16 21:22:35,090 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 483 places, 443 transitions [2020-01-16 21:22:37,965 INFO L129 PetriNetUnfolder]: 119/1032 cut-off events. [2020-01-16 21:22:37,965 INFO L130 PetriNetUnfolder]: For 994424/994558 co-relation queries the response was YES. [2020-01-16 21:22:37,997 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 21:22:38,006 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 483 places, 0 of 443 transitions, 120 of 40653 flow. [2020-01-16 21:22:38,006 INFO L478 AbstractCegarLoop]: Abstraction has has 482 places, 443 transitions [2020-01-16 21:22:38,006 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:22:40,020 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:22:40,020 INFO L130 PetriNetUnfolder]: For 994424/994558 co-relation queries the response was YES. [2020-01-16 21:22:40,020 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:22:40,020 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:22:40,021 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 21:22:40,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:22:40,021 INFO L82 PathProgramCache]: Analyzing trace with hash 820119001, now seen corresponding path program 56 times [2020-01-16 21:22:40,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:22:40,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362583903] [2020-01-16 21:22:40,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:22:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:22:40,204 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 21:22:40,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362583903] [2020-01-16 21:22:40,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:22:40,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:22:40,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61351168] [2020-01-16 21:22:40,205 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:22:40,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:22:40,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:22:40,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:22:40,206 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:22:40,207 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 443 transitions. Second operand 7 states. [2020-01-16 21:22:40,207 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:22:40,207 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:22:40,207 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:22:44,527 INFO L129 PetriNetUnfolder]: 119/1031 cut-off events. [2020-01-16 21:22:44,527 INFO L130 PetriNetUnfolder]: For 1013564/1014074 co-relation queries the response was YES. [2020-01-16 21:22:44,564 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 21:22:44,571 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 182 selfloop transitions, 256 changer transitions [2020-01-16 21:22:44,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:22:44,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:22:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:22:44,572 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:22:44,572 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:22:44,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:22:44,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:22:44,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:22:44,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:22:44,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:22:44,573 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:22:44,573 INFO L174 Difference]: Start difference. First operand has 482 places, 443 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:22:44,583 INFO L199 Difference]: Finished difference. Result has 490 places, 444 transitions [2020-01-16 21:22:44,583 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 21:22:44,584 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 490 places, 444 transitions [2020-01-16 21:22:44,584 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 490 places, 444 transitions [2020-01-16 21:22:47,240 INFO L129 PetriNetUnfolder]: 119/1031 cut-off events. [2020-01-16 21:22:47,241 INFO L130 PetriNetUnfolder]: For 1028480/1028616 co-relation queries the response was YES. [2020-01-16 21:22:47,278 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 21:22:47,287 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 490 places, 0 of 444 transitions, 120 of 41375 flow. [2020-01-16 21:22:47,287 INFO L478 AbstractCegarLoop]: Abstraction has has 489 places, 444 transitions [2020-01-16 21:22:47,288 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:22:49,408 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:22:49,409 INFO L130 PetriNetUnfolder]: For 1027732/1027820 co-relation queries the response was YES. [2020-01-16 21:22:49,409 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:22:49,409 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:22:49,409 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 21:22:49,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:22:49,409 INFO L82 PathProgramCache]: Analyzing trace with hash 910887237, now seen corresponding path program 57 times [2020-01-16 21:22:49,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:22:49,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073352362] [2020-01-16 21:22:49,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:22:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:22:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:22:49,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073352362] [2020-01-16 21:22:49,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:22:49,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:22:49,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707594924] [2020-01-16 21:22:49,617 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:22:49,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:22:49,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:22:49,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:22:49,618 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:22:49,618 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 444 transitions. Second operand 7 states. [2020-01-16 21:22:49,618 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:22:49,618 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:22:49,618 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:22:53,874 INFO L129 PetriNetUnfolder]: 119/1030 cut-off events. [2020-01-16 21:22:53,875 INFO L130 PetriNetUnfolder]: For 1047495/1047976 co-relation queries the response was YES. [2020-01-16 21:22:53,902 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 21:22:53,909 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 184 selfloop transitions, 254 changer transitions [2020-01-16 21:22:53,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:22:53,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:22:53,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:22:53,910 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:22:53,910 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:22:53,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:22:53,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:22:53,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:22:53,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:22:53,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:22:53,912 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:22:53,912 INFO L174 Difference]: Start difference. First operand has 489 places, 444 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:22:53,927 INFO L199 Difference]: Finished difference. Result has 496 places, 444 transitions [2020-01-16 21:22:53,927 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 21:22:53,928 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 496 places, 444 transitions [2020-01-16 21:22:53,928 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 496 places, 444 transitions [2020-01-16 21:22:56,736 INFO L129 PetriNetUnfolder]: 119/1030 cut-off events. [2020-01-16 21:22:56,737 INFO L130 PetriNetUnfolder]: For 1060095/1060183 co-relation queries the response was YES. [2020-01-16 21:22:56,775 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 21:22:56,784 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 496 places, 0 of 444 transitions, 120 of 41883 flow. [2020-01-16 21:22:56,785 INFO L478 AbstractCegarLoop]: Abstraction has has 495 places, 444 transitions [2020-01-16 21:22:56,785 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:22:58,707 INFO L129 PetriNetUnfolder]: 119/966 cut-off events. [2020-01-16 21:22:58,707 INFO L130 PetriNetUnfolder]: For 1060095/1060183 co-relation queries the response was YES. [2020-01-16 21:22:58,707 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:22:58,707 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:22:58,707 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 21:22:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:22:58,708 INFO L82 PathProgramCache]: Analyzing trace with hash -775107319, now seen corresponding path program 58 times [2020-01-16 21:22:58,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:22:58,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150917200] [2020-01-16 21:22:58,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:22:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:22:58,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:22:58,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150917200] [2020-01-16 21:22:58,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:22:58,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:22:58,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939962948] [2020-01-16 21:22:58,857 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:22:58,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:22:58,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:22:58,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:22:58,858 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:22:58,858 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 444 transitions. Second operand 7 states. [2020-01-16 21:22:58,858 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:22:58,858 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:22:58,858 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:23:02,803 INFO L129 PetriNetUnfolder]: 119/1029 cut-off events. [2020-01-16 21:23:02,803 INFO L130 PetriNetUnfolder]: For 1080377/1080863 co-relation queries the response was YES. [2020-01-16 21:23:02,837 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 21:23:02,843 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 180 selfloop transitions, 258 changer transitions [2020-01-16 21:23:02,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:23:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:23:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:23:02,844 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:23:02,844 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:23:02,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:23:02,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:23:02,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:23:02,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:23:02,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:23:02,845 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:23:02,845 INFO L174 Difference]: Start difference. First operand has 495 places, 444 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:23:02,855 INFO L199 Difference]: Finished difference. Result has 502 places, 444 transitions [2020-01-16 21:23:02,856 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 21:23:02,856 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 502 places, 444 transitions [2020-01-16 21:23:02,856 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 502 places, 444 transitions [2020-01-16 21:23:05,600 INFO L129 PetriNetUnfolder]: 119/1029 cut-off events. [2020-01-16 21:23:05,600 INFO L130 PetriNetUnfolder]: For 1093267/1093355 co-relation queries the response was YES. [2020-01-16 21:23:05,629 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 21:23:05,638 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 502 places, 0 of 444 transitions, 120 of 42399 flow. [2020-01-16 21:23:05,639 INFO L478 AbstractCegarLoop]: Abstraction has has 501 places, 444 transitions [2020-01-16 21:23:05,639 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:23:07,769 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:23:07,769 INFO L130 PetriNetUnfolder]: For 1093267/1093355 co-relation queries the response was YES. [2020-01-16 21:23:07,769 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:23:07,769 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:23:07,770 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 21:23:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:23:07,770 INFO L82 PathProgramCache]: Analyzing trace with hash 41281425, now seen corresponding path program 59 times [2020-01-16 21:23:07,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:23:07,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888802992] [2020-01-16 21:23:07,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:23:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:23:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:23:07,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888802992] [2020-01-16 21:23:07,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:23:07,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:23:07,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085561207] [2020-01-16 21:23:07,922 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:23:07,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:23:07,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:23:07,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:23:07,922 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:23:07,923 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 444 transitions. Second operand 7 states. [2020-01-16 21:23:07,923 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:23:07,923 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:23:07,923 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:23:12,359 INFO L129 PetriNetUnfolder]: 119/1028 cut-off events. [2020-01-16 21:23:12,360 INFO L130 PetriNetUnfolder]: For 1113881/1114367 co-relation queries the response was YES. [2020-01-16 21:23:12,397 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 21:23:12,404 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 251 changer transitions [2020-01-16 21:23:12,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:23:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:23:12,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:23:12,405 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:23:12,405 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:23:12,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:23:12,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:23:12,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:23:12,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:23:12,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:23:12,406 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:23:12,406 INFO L174 Difference]: Start difference. First operand has 501 places, 444 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:23:12,416 INFO L199 Difference]: Finished difference. Result has 508 places, 444 transitions [2020-01-16 21:23:12,417 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 21:23:12,417 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 508 places, 444 transitions [2020-01-16 21:23:12,417 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 508 places, 444 transitions [2020-01-16 21:23:15,473 INFO L129 PetriNetUnfolder]: 119/1028 cut-off events. [2020-01-16 21:23:15,473 INFO L130 PetriNetUnfolder]: For 1126229/1126313 co-relation queries the response was YES. [2020-01-16 21:23:15,511 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 21:23:15,521 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 508 places, 0 of 444 transitions, 120 of 42901 flow. [2020-01-16 21:23:15,521 INFO L478 AbstractCegarLoop]: Abstraction has has 507 places, 444 transitions [2020-01-16 21:23:15,521 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:23:17,655 INFO L129 PetriNetUnfolder]: 119/966 cut-off events. [2020-01-16 21:23:17,655 INFO L130 PetriNetUnfolder]: For 1126229/1126313 co-relation queries the response was YES. [2020-01-16 21:23:17,655 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:23:17,656 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:23:17,656 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 21:23:17,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:23:17,656 INFO L82 PathProgramCache]: Analyzing trace with hash -805700185, now seen corresponding path program 60 times [2020-01-16 21:23:17,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:23:17,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812934474] [2020-01-16 21:23:17,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:23:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:23:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:23:17,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812934474] [2020-01-16 21:23:17,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:23:17,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:23:17,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455919575] [2020-01-16 21:23:17,842 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:23:17,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:23:17,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:23:17,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:23:17,843 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:23:17,843 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 444 transitions. Second operand 7 states. [2020-01-16 21:23:17,843 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:23:17,843 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:23:17,843 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:23:22,466 INFO L129 PetriNetUnfolder]: 119/1027 cut-off events. [2020-01-16 21:23:22,467 INFO L130 PetriNetUnfolder]: For 1150415/1151336 co-relation queries the response was YES. [2020-01-16 21:23:22,497 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 21:23:22,503 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 251 changer transitions [2020-01-16 21:23:22,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:23:22,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:23:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:23:22,504 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:23:22,504 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:23:22,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:23:22,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:23:22,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:23:22,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:23:22,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:23:22,506 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:23:22,506 INFO L174 Difference]: Start difference. First operand has 507 places, 444 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:23:22,516 INFO L199 Difference]: Finished difference. Result has 514 places, 444 transitions [2020-01-16 21:23:22,517 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 21:23:22,517 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 514 places, 444 transitions [2020-01-16 21:23:22,517 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 514 places, 444 transitions [2020-01-16 21:23:25,402 INFO L129 PetriNetUnfolder]: 119/1027 cut-off events. [2020-01-16 21:23:25,402 INFO L130 PetriNetUnfolder]: For 1159768/1159852 co-relation queries the response was YES. [2020-01-16 21:23:25,442 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 21:23:25,452 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 514 places, 0 of 444 transitions, 120 of 43403 flow. [2020-01-16 21:23:25,452 INFO L478 AbstractCegarLoop]: Abstraction has has 513 places, 444 transitions [2020-01-16 21:23:25,452 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:23:27,392 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:23:27,393 INFO L130 PetriNetUnfolder]: For 1159768/1159852 co-relation queries the response was YES. [2020-01-16 21:23:27,393 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:23:27,393 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:23:27,393 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 21:23:27,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:23:27,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1045371301, now seen corresponding path program 61 times [2020-01-16 21:23:27,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:23:27,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631631625] [2020-01-16 21:23:27,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:23:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:23:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:23:27,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631631625] [2020-01-16 21:23:27,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:23:27,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:23:27,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163407390] [2020-01-16 21:23:27,587 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:23:27,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:23:27,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:23:27,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:23:27,588 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:23:27,589 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 444 transitions. Second operand 7 states. [2020-01-16 21:23:27,589 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:23:27,590 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:23:27,590 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:23:31,851 INFO L129 PetriNetUnfolder]: 119/1026 cut-off events. [2020-01-16 21:23:31,851 INFO L130 PetriNetUnfolder]: For 1180793/1181257 co-relation queries the response was YES. [2020-01-16 21:23:31,885 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 21:23:31,891 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 189 selfloop transitions, 253 changer transitions [2020-01-16 21:23:31,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:23:31,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:23:31,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:23:31,892 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:23:31,892 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:23:31,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:23:31,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:23:31,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:23:31,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:23:31,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:23:31,894 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:23:31,894 INFO L174 Difference]: Start difference. First operand has 513 places, 444 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:23:31,910 INFO L199 Difference]: Finished difference. Result has 521 places, 448 transitions [2020-01-16 21:23:31,911 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 21:23:31,911 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 521 places, 448 transitions [2020-01-16 21:23:31,911 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 521 places, 448 transitions [2020-01-16 21:23:34,731 INFO L129 PetriNetUnfolder]: 119/1026 cut-off events. [2020-01-16 21:23:34,731 INFO L130 PetriNetUnfolder]: For 1195670/1195754 co-relation queries the response was YES. [2020-01-16 21:23:34,762 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 21:23:34,772 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 521 places, 0 of 448 transitions, 120 of 44269 flow. [2020-01-16 21:23:34,772 INFO L478 AbstractCegarLoop]: Abstraction has has 520 places, 448 transitions [2020-01-16 21:23:34,772 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:23:36,986 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:23:36,987 INFO L130 PetriNetUnfolder]: For 1195875/1195961 co-relation queries the response was YES. [2020-01-16 21:23:36,987 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:23:36,987 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:23:36,987 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 21:23:36,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:23:36,987 INFO L82 PathProgramCache]: Analyzing trace with hash 457512897, now seen corresponding path program 62 times [2020-01-16 21:23:36,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:23:36,987 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789088752] [2020-01-16 21:23:36,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:23:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:23:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:23:37,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789088752] [2020-01-16 21:23:37,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:23:37,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:23:37,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973267684] [2020-01-16 21:23:37,132 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:23:37,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:23:37,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:23:37,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:23:37,132 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:23:37,133 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 448 transitions. Second operand 7 states. [2020-01-16 21:23:37,133 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:23:37,133 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:23:37,133 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:23:41,765 INFO L129 PetriNetUnfolder]: 119/1025 cut-off events. [2020-01-16 21:23:41,766 INFO L130 PetriNetUnfolder]: For 1216943/1217407 co-relation queries the response was YES. [2020-01-16 21:23:41,805 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 21:23:41,812 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 255 changer transitions [2020-01-16 21:23:41,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:23:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:23:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:23:41,813 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:23:41,813 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:23:41,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:23:41,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:23:41,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:23:41,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:23:41,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:23:41,814 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:23:41,814 INFO L174 Difference]: Start difference. First operand has 520 places, 448 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:23:41,825 INFO L199 Difference]: Finished difference. Result has 527 places, 448 transitions [2020-01-16 21:23:41,825 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 21:23:41,825 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 527 places, 448 transitions [2020-01-16 21:23:41,826 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 527 places, 448 transitions [2020-01-16 21:23:45,104 INFO L129 PetriNetUnfolder]: 119/1025 cut-off events. [2020-01-16 21:23:45,105 INFO L130 PetriNetUnfolder]: For 1230503/1230589 co-relation queries the response was YES. [2020-01-16 21:23:45,144 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 21:23:45,154 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 527 places, 0 of 448 transitions, 120 of 44779 flow. [2020-01-16 21:23:45,154 INFO L478 AbstractCegarLoop]: Abstraction has has 526 places, 448 transitions [2020-01-16 21:23:45,154 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:23:47,453 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:23:47,453 INFO L130 PetriNetUnfolder]: For 1230503/1230589 co-relation queries the response was YES. [2020-01-16 21:23:47,453 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:23:47,453 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:23:47,453 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 21:23:47,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:23:47,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1343316501, now seen corresponding path program 63 times [2020-01-16 21:23:47,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:23:47,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861121102] [2020-01-16 21:23:47,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:23:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:23:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:23:47,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861121102] [2020-01-16 21:23:47,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:23:47,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:23:47,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987829254] [2020-01-16 21:23:47,623 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:23:47,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:23:47,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:23:47,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:23:47,623 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:23:47,624 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 448 transitions. Second operand 7 states. [2020-01-16 21:23:47,624 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:23:47,624 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:23:47,624 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:23:52,121 INFO L129 PetriNetUnfolder]: 119/1024 cut-off events. [2020-01-16 21:23:52,122 INFO L130 PetriNetUnfolder]: For 1251813/1252277 co-relation queries the response was YES. [2020-01-16 21:23:52,154 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 21:23:52,161 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 255 changer transitions [2020-01-16 21:23:52,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:23:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:23:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:23:52,162 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:23:52,162 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:23:52,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:23:52,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:23:52,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:23:52,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:23:52,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:23:52,163 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:23:52,163 INFO L174 Difference]: Start difference. First operand has 526 places, 448 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:23:52,176 INFO L199 Difference]: Finished difference. Result has 533 places, 448 transitions [2020-01-16 21:23:52,177 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 21:23:52,177 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 533 places, 448 transitions [2020-01-16 21:23:52,177 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 533 places, 448 transitions [2020-01-16 21:23:55,166 INFO L129 PetriNetUnfolder]: 119/1024 cut-off events. [2020-01-16 21:23:55,166 INFO L130 PetriNetUnfolder]: For 1265753/1265843 co-relation queries the response was YES. [2020-01-16 21:23:55,305 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 21:23:55,315 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 533 places, 0 of 448 transitions, 120 of 45289 flow. [2020-01-16 21:23:55,315 INFO L478 AbstractCegarLoop]: Abstraction has has 532 places, 448 transitions [2020-01-16 21:23:55,315 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:23:57,606 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:23:57,606 INFO L130 PetriNetUnfolder]: For 1266274/1266403 co-relation queries the response was YES. [2020-01-16 21:23:57,606 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:23:57,606 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:23:57,606 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 21:23:57,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:23:57,606 INFO L82 PathProgramCache]: Analyzing trace with hash -984580015, now seen corresponding path program 64 times [2020-01-16 21:23:57,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:23:57,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746639401] [2020-01-16 21:23:57,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:23:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:23:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:23:57,756 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746639401] [2020-01-16 21:23:57,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:23:57,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:23:57,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266500926] [2020-01-16 21:23:57,757 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:23:57,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:23:57,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:23:57,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:23:57,758 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:23:57,758 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 448 transitions. Second operand 7 states. [2020-01-16 21:23:57,758 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:23:57,758 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:23:57,758 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:24:02,461 INFO L129 PetriNetUnfolder]: 119/1023 cut-off events. [2020-01-16 21:24:02,461 INFO L130 PetriNetUnfolder]: For 1287046/1287510 co-relation queries the response was YES. [2020-01-16 21:24:02,500 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 21:24:02,507 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 183 selfloop transitions, 259 changer transitions [2020-01-16 21:24:02,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:24:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:24:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:24:02,508 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:24:02,508 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:24:02,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:24:02,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:24:02,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:24:02,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:24:02,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:24:02,509 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:24:02,509 INFO L174 Difference]: Start difference. First operand has 532 places, 448 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:24:02,520 INFO L199 Difference]: Finished difference. Result has 539 places, 448 transitions [2020-01-16 21:24:02,520 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 21:24:02,520 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 539 places, 448 transitions [2020-01-16 21:24:02,520 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 539 places, 448 transitions [2020-01-16 21:24:05,245 INFO L129 PetriNetUnfolder]: 119/1023 cut-off events. [2020-01-16 21:24:05,245 INFO L130 PetriNetUnfolder]: For 1302246/1302375 co-relation queries the response was YES. [2020-01-16 21:24:05,283 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 21:24:05,293 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 539 places, 0 of 448 transitions, 120 of 45807 flow. [2020-01-16 21:24:05,293 INFO L478 AbstractCegarLoop]: Abstraction has has 538 places, 448 transitions [2020-01-16 21:24:05,293 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:24:07,569 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:24:07,570 INFO L130 PetriNetUnfolder]: For 1302246/1302375 co-relation queries the response was YES. [2020-01-16 21:24:07,570 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:24:07,570 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:24:07,570 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 21:24:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:24:07,570 INFO L82 PathProgramCache]: Analyzing trace with hash -135448025, now seen corresponding path program 65 times [2020-01-16 21:24:07,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:24:07,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062116304] [2020-01-16 21:24:07,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:24:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:24:07,815 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 16 [2020-01-16 21:24:07,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:24:07,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062116304] [2020-01-16 21:24:07,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:24:07,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:24:07,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229800401] [2020-01-16 21:24:07,819 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:24:07,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:24:07,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:24:07,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:24:07,820 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:24:07,820 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 448 transitions. Second operand 7 states. [2020-01-16 21:24:07,821 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:24:07,821 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:24:07,821 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:24:13,078 INFO L129 PetriNetUnfolder]: 119/1022 cut-off events. [2020-01-16 21:24:13,078 INFO L130 PetriNetUnfolder]: For 1323338/1323802 co-relation queries the response was YES. [2020-01-16 21:24:13,112 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 21:24:13,119 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 186 selfloop transitions, 258 changer transitions [2020-01-16 21:24:13,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:24:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:24:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:24:13,120 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:24:13,120 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:24:13,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:24:13,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:24:13,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:24:13,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:24:13,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:24:13,121 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:24:13,121 INFO L174 Difference]: Start difference. First operand has 538 places, 448 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:24:13,132 INFO L199 Difference]: Finished difference. Result has 546 places, 450 transitions [2020-01-16 21:24:13,133 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 21:24:13,133 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 546 places, 450 transitions [2020-01-16 21:24:13,133 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 546 places, 450 transitions [2020-01-16 21:24:16,188 INFO L129 PetriNetUnfolder]: 119/1022 cut-off events. [2020-01-16 21:24:16,188 INFO L130 PetriNetUnfolder]: For 1339978/1340107 co-relation queries the response was YES. [2020-01-16 21:24:16,229 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 21:24:16,240 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 546 places, 0 of 450 transitions, 120 of 46568 flow. [2020-01-16 21:24:16,240 INFO L478 AbstractCegarLoop]: Abstraction has has 545 places, 450 transitions [2020-01-16 21:24:16,241 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:24:18,493 INFO L129 PetriNetUnfolder]: 119/966 cut-off events. [2020-01-16 21:24:18,493 INFO L130 PetriNetUnfolder]: For 1339978/1340107 co-relation queries the response was YES. [2020-01-16 21:24:18,493 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:24:18,493 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:24:18,493 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 21:24:18,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:24:18,494 INFO L82 PathProgramCache]: Analyzing trace with hash -92720639, now seen corresponding path program 66 times [2020-01-16 21:24:18,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:24:18,494 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443279246] [2020-01-16 21:24:18,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:24:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:24:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:24:18,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443279246] [2020-01-16 21:24:18,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:24:18,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:24:18,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227612460] [2020-01-16 21:24:18,724 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:24:18,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:24:18,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:24:18,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:24:18,725 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:24:18,725 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 450 transitions. Second operand 7 states. [2020-01-16 21:24:18,726 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:24:18,726 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:24:18,726 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:24:23,720 INFO L129 PetriNetUnfolder]: 119/1021 cut-off events. [2020-01-16 21:24:23,720 INFO L130 PetriNetUnfolder]: For 1361302/1361766 co-relation queries the response was YES. [2020-01-16 21:24:23,760 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 21:24:23,767 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 185 selfloop transitions, 259 changer transitions [2020-01-16 21:24:23,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:24:23,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:24:23,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:24:23,768 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:24:23,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:24:23,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:24:23,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:24:23,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:24:23,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:24:23,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:24:23,769 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:24:23,770 INFO L174 Difference]: Start difference. First operand has 545 places, 450 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:24:23,786 INFO L199 Difference]: Finished difference. Result has 552 places, 450 transitions [2020-01-16 21:24:23,787 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 21:24:23,787 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 552 places, 450 transitions [2020-01-16 21:24:23,787 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 552 places, 450 transitions [2020-01-16 21:24:26,642 INFO L129 PetriNetUnfolder]: 119/1021 cut-off events. [2020-01-16 21:24:26,643 INFO L130 PetriNetUnfolder]: For 1376339/1376468 co-relation queries the response was YES. [2020-01-16 21:24:26,682 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 21:24:26,692 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 552 places, 0 of 450 transitions, 120 of 47086 flow. [2020-01-16 21:24:26,692 INFO L478 AbstractCegarLoop]: Abstraction has has 551 places, 450 transitions [2020-01-16 21:24:26,692 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:24:29,097 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:24:29,097 INFO L130 PetriNetUnfolder]: For 1376339/1376468 co-relation queries the response was YES. [2020-01-16 21:24:29,097 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:24:29,097 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:24:29,097 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 21:24:29,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:24:29,098 INFO L82 PathProgramCache]: Analyzing trace with hash -863794843, now seen corresponding path program 67 times [2020-01-16 21:24:29,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:24:29,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492191289] [2020-01-16 21:24:29,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:24:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:24:29,269 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 21:24:29,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492191289] [2020-01-16 21:24:29,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:24:29,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:24:29,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041356984] [2020-01-16 21:24:29,270 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:24:29,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:24:29,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:24:29,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:24:29,271 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:24:29,271 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 450 transitions. Second operand 7 states. [2020-01-16 21:24:29,272 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:24:29,272 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:24:29,272 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:24:33,823 INFO L129 PetriNetUnfolder]: 119/1020 cut-off events. [2020-01-16 21:24:33,824 INFO L130 PetriNetUnfolder]: For 1398426/1398924 co-relation queries the response was YES. [2020-01-16 21:24:33,856 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 21:24:33,863 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 257 changer transitions [2020-01-16 21:24:33,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:24:33,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:24:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:24:33,865 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:24:33,865 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:24:33,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:24:33,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:24:33,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:24:33,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:24:33,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:24:33,867 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:24:33,867 INFO L174 Difference]: Start difference. First operand has 551 places, 450 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:24:33,881 INFO L199 Difference]: Finished difference. Result has 558 places, 450 transitions [2020-01-16 21:24:33,881 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 21:24:33,881 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 558 places, 450 transitions [2020-01-16 21:24:33,882 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 558 places, 450 transitions [2020-01-16 21:24:37,002 INFO L129 PetriNetUnfolder]: 119/1020 cut-off events. [2020-01-16 21:24:37,002 INFO L130 PetriNetUnfolder]: For 1413201/1413330 co-relation queries the response was YES. [2020-01-16 21:24:37,035 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 21:24:37,045 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 558 places, 0 of 450 transitions, 120 of 47600 flow. [2020-01-16 21:24:37,045 INFO L478 AbstractCegarLoop]: Abstraction has has 557 places, 450 transitions [2020-01-16 21:24:37,045 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:24:39,453 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:24:39,453 INFO L130 PetriNetUnfolder]: For 1413708/1413888 co-relation queries the response was YES. [2020-01-16 21:24:39,453 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:24:39,453 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:24:39,453 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 21:24:39,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:24:39,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1229006585, now seen corresponding path program 68 times [2020-01-16 21:24:39,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:24:39,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741057162] [2020-01-16 21:24:39,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:24:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:24:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:24:39,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741057162] [2020-01-16 21:24:39,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:24:39,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:24:39,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487112377] [2020-01-16 21:24:39,596 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:24:39,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:24:39,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:24:39,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:24:39,597 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:24:39,597 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 450 transitions. Second operand 7 states. [2020-01-16 21:24:39,597 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:24:39,598 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:24:39,598 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:24:44,556 INFO L129 PetriNetUnfolder]: 119/1019 cut-off events. [2020-01-16 21:24:44,556 INFO L130 PetriNetUnfolder]: For 1434958/1435422 co-relation queries the response was YES. [2020-01-16 21:24:44,597 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 21:24:44,604 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 257 changer transitions [2020-01-16 21:24:44,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:24:44,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:24:44,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:24:44,605 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:24:44,606 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:24:44,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:24:44,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:24:44,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:24:44,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:24:44,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:24:44,607 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:24:44,607 INFO L174 Difference]: Start difference. First operand has 557 places, 450 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:24:44,618 INFO L199 Difference]: Finished difference. Result has 564 places, 450 transitions [2020-01-16 21:24:44,619 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 21:24:44,619 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 564 places, 450 transitions [2020-01-16 21:24:44,619 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 564 places, 450 transitions [2020-01-16 21:24:47,621 INFO L129 PetriNetUnfolder]: 119/1019 cut-off events. [2020-01-16 21:24:47,621 INFO L130 PetriNetUnfolder]: For 1450810/1450990 co-relation queries the response was YES. [2020-01-16 21:24:47,663 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 21:24:47,673 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 564 places, 0 of 450 transitions, 120 of 48114 flow. [2020-01-16 21:24:47,674 INFO L478 AbstractCegarLoop]: Abstraction has has 563 places, 450 transitions [2020-01-16 21:24:47,674 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:24:49,854 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:24:49,854 INFO L130 PetriNetUnfolder]: For 1450810/1450990 co-relation queries the response was YES. [2020-01-16 21:24:49,854 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:24:49,854 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:24:49,854 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 21:24:49,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:24:49,855 INFO L82 PathProgramCache]: Analyzing trace with hash 391115021, now seen corresponding path program 69 times [2020-01-16 21:24:49,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:24:49,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537008454] [2020-01-16 21:24:49,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:24:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:24:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:24:50,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537008454] [2020-01-16 21:24:50,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:24:50,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:24:50,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286418483] [2020-01-16 21:24:50,030 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:24:50,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:24:50,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:24:50,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:24:50,030 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:24:50,031 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 450 transitions. Second operand 7 states. [2020-01-16 21:24:50,031 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:24:50,031 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:24:50,031 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:24:54,631 INFO L129 PetriNetUnfolder]: 119/1018 cut-off events. [2020-01-16 21:24:54,631 INFO L130 PetriNetUnfolder]: For 1472294/1472758 co-relation queries the response was YES. [2020-01-16 21:24:54,669 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 21:24:54,676 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 257 changer transitions [2020-01-16 21:24:54,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:24:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:24:54,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:24:54,677 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:24:54,677 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:24:54,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:24:54,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:24:54,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:24:54,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:24:54,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:24:54,678 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:24:54,678 INFO L174 Difference]: Start difference. First operand has 563 places, 450 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:24:54,689 INFO L199 Difference]: Finished difference. Result has 570 places, 450 transitions [2020-01-16 21:24:54,690 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 21:24:54,690 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 570 places, 450 transitions [2020-01-16 21:24:54,690 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 570 places, 450 transitions [2020-01-16 21:24:58,239 INFO L129 PetriNetUnfolder]: 119/1018 cut-off events. [2020-01-16 21:24:58,239 INFO L130 PetriNetUnfolder]: For 1488446/1488628 co-relation queries the response was YES. [2020-01-16 21:24:58,275 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 21:24:58,286 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 570 places, 0 of 450 transitions, 120 of 48628 flow. [2020-01-16 21:24:58,286 INFO L478 AbstractCegarLoop]: Abstraction has has 569 places, 450 transitions [2020-01-16 21:24:58,286 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:25:00,788 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:25:00,788 INFO L130 PetriNetUnfolder]: For 1488446/1488628 co-relation queries the response was YES. [2020-01-16 21:25:00,788 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:25:00,788 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:25:00,788 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 21:25:00,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:25:00,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1247442761, now seen corresponding path program 70 times [2020-01-16 21:25:00,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:25:00,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788110443] [2020-01-16 21:25:00,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:25:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:25:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:25:00,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788110443] [2020-01-16 21:25:00,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:25:00,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:25:00,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261350368] [2020-01-16 21:25:00,927 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:25:00,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:25:00,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:25:00,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:25:00,928 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:25:00,928 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 450 transitions. Second operand 7 states. [2020-01-16 21:25:00,928 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:25:00,928 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:25:00,928 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:25:06,260 INFO L129 PetriNetUnfolder]: 119/1017 cut-off events. [2020-01-16 21:25:06,260 INFO L130 PetriNetUnfolder]: For 1509792/1510133 co-relation queries the response was YES. [2020-01-16 21:25:06,294 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 21:25:06,301 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 255 changer transitions [2020-01-16 21:25:06,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:25:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:25:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:25:06,302 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:25:06,302 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:25:06,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:25:06,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:25:06,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:25:06,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:25:06,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:25:06,303 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:25:06,304 INFO L174 Difference]: Start difference. First operand has 569 places, 450 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:25:06,315 INFO L199 Difference]: Finished difference. Result has 577 places, 452 transitions [2020-01-16 21:25:06,316 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 21:25:06,316 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 577 places, 452 transitions [2020-01-16 21:25:06,316 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 577 places, 452 transitions [2020-01-16 21:25:09,489 INFO L129 PetriNetUnfolder]: 119/1017 cut-off events. [2020-01-16 21:25:09,490 INFO L130 PetriNetUnfolder]: For 1528413/1528595 co-relation queries the response was YES. [2020-01-16 21:25:09,532 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 21:25:09,543 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 577 places, 0 of 452 transitions, 120 of 49390 flow. [2020-01-16 21:25:09,544 INFO L478 AbstractCegarLoop]: Abstraction has has 576 places, 452 transitions [2020-01-16 21:25:09,544 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:25:12,012 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:25:12,012 INFO L130 PetriNetUnfolder]: For 1527801/1527934 co-relation queries the response was YES. [2020-01-16 21:25:12,012 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:25:12,012 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:25:12,012 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 21:25:12,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:25:12,013 INFO L82 PathProgramCache]: Analyzing trace with hash 787235449, now seen corresponding path program 71 times [2020-01-16 21:25:12,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:25:12,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673055762] [2020-01-16 21:25:12,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:25:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:25:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:25:12,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673055762] [2020-01-16 21:25:12,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:25:12,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:25:12,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49366115] [2020-01-16 21:25:12,150 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:25:12,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:25:12,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:25:12,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:25:12,151 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:25:12,151 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 452 transitions. Second operand 7 states. [2020-01-16 21:25:12,151 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:25:12,151 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:25:12,151 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:25:17,094 INFO L129 PetriNetUnfolder]: 119/1016 cut-off events. [2020-01-16 21:25:17,094 INFO L130 PetriNetUnfolder]: For 1550257/1550603 co-relation queries the response was YES. [2020-01-16 21:25:17,135 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 21:25:17,143 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 255 changer transitions [2020-01-16 21:25:17,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:25:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:25:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:25:17,144 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:25:17,144 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:25:17,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:25:17,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:25:17,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:25:17,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:25:17,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:25:17,145 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:25:17,145 INFO L174 Difference]: Start difference. First operand has 576 places, 452 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:25:17,157 INFO L199 Difference]: Finished difference. Result has 583 places, 452 transitions [2020-01-16 21:25:17,157 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 21:25:17,157 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 583 places, 452 transitions [2020-01-16 21:25:17,158 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 583 places, 452 transitions [2020-01-16 21:25:20,103 INFO L129 PetriNetUnfolder]: 119/1016 cut-off events. [2020-01-16 21:25:20,103 INFO L130 PetriNetUnfolder]: For 1566244/1566378 co-relation queries the response was YES. [2020-01-16 21:25:20,143 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 21:25:20,155 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 583 places, 0 of 452 transitions, 120 of 49900 flow. [2020-01-16 21:25:20,155 INFO L478 AbstractCegarLoop]: Abstraction has has 582 places, 452 transitions [2020-01-16 21:25:20,155 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:25:22,621 INFO L129 PetriNetUnfolder]: 119/966 cut-off events. [2020-01-16 21:25:22,621 INFO L130 PetriNetUnfolder]: For 1566520/1566716 co-relation queries the response was YES. [2020-01-16 21:25:22,621 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:25:22,621 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:25:22,621 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 21:25:22,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:25:22,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1322090143, now seen corresponding path program 72 times [2020-01-16 21:25:22,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:25:22,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543520748] [2020-01-16 21:25:22,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:25:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:25:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:25:22,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543520748] [2020-01-16 21:25:22,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:25:22,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:25:22,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179629075] [2020-01-16 21:25:22,773 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:25:22,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:25:22,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:25:22,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:25:22,774 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:25:22,774 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 452 transitions. Second operand 7 states. [2020-01-16 21:25:22,774 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:25:22,774 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:25:22,775 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:25:27,407 INFO L129 PetriNetUnfolder]: 119/1015 cut-off events. [2020-01-16 21:25:27,407 INFO L130 PetriNetUnfolder]: For 1588621/1588968 co-relation queries the response was YES. [2020-01-16 21:25:27,443 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 21:25:27,450 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 259 changer transitions [2020-01-16 21:25:27,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:25:27,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:25:27,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:25:27,451 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:25:27,451 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:25:27,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:25:27,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:25:27,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:25:27,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:25:27,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:25:27,454 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:25:27,454 INFO L174 Difference]: Start difference. First operand has 582 places, 452 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:25:27,467 INFO L199 Difference]: Finished difference. Result has 589 places, 452 transitions [2020-01-16 21:25:27,467 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 21:25:27,468 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 589 places, 452 transitions [2020-01-16 21:25:27,468 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 589 places, 452 transitions [2020-01-16 21:25:30,469 INFO L129 PetriNetUnfolder]: 119/1015 cut-off events. [2020-01-16 21:25:30,469 INFO L130 PetriNetUnfolder]: For 1606040/1606236 co-relation queries the response was YES. [2020-01-16 21:25:30,504 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 21:25:30,515 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 589 places, 0 of 452 transitions, 120 of 50418 flow. [2020-01-16 21:25:30,515 INFO L478 AbstractCegarLoop]: Abstraction has has 588 places, 452 transitions [2020-01-16 21:25:30,515 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:25:33,126 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:25:33,126 INFO L130 PetriNetUnfolder]: For 1606040/1606236 co-relation queries the response was YES. [2020-01-16 21:25:33,127 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:25:33,127 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:25:33,127 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 21:25:33,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:25:33,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1105754595, now seen corresponding path program 73 times [2020-01-16 21:25:33,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:25:33,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699490592] [2020-01-16 21:25:33,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:25:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:25:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:25:33,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699490592] [2020-01-16 21:25:33,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:25:33,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:25:33,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651484938] [2020-01-16 21:25:33,277 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:25:33,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:25:33,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:25:33,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:25:33,278 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:25:33,278 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 452 transitions. Second operand 7 states. [2020-01-16 21:25:33,278 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:25:33,278 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:25:33,279 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:25:39,222 INFO L129 PetriNetUnfolder]: 119/1014 cut-off events. [2020-01-16 21:25:39,223 INFO L130 PetriNetUnfolder]: For 1628453/1628800 co-relation queries the response was YES. [2020-01-16 21:25:39,258 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 21:25:39,265 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 187 selfloop transitions, 259 changer transitions [2020-01-16 21:25:39,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:25:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:25:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:25:39,266 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:25:39,266 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:25:39,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:25:39,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:25:39,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:25:39,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:25:39,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:25:39,267 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:25:39,268 INFO L174 Difference]: Start difference. First operand has 588 places, 452 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:25:39,280 INFO L199 Difference]: Finished difference. Result has 595 places, 452 transitions [2020-01-16 21:25:39,280 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 21:25:39,280 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 595 places, 452 transitions [2020-01-16 21:25:39,280 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 595 places, 452 transitions [2020-01-16 21:25:42,574 INFO L129 PetriNetUnfolder]: 119/1014 cut-off events. [2020-01-16 21:25:42,575 INFO L130 PetriNetUnfolder]: For 1645378/1645574 co-relation queries the response was YES. [2020-01-16 21:25:42,618 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 21:25:42,630 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 595 places, 0 of 452 transitions, 120 of 50936 flow. [2020-01-16 21:25:42,631 INFO L478 AbstractCegarLoop]: Abstraction has has 594 places, 452 transitions [2020-01-16 21:25:42,631 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:25:45,092 INFO L129 PetriNetUnfolder]: 119/966 cut-off events. [2020-01-16 21:25:45,092 INFO L130 PetriNetUnfolder]: For 1645378/1645574 co-relation queries the response was YES. [2020-01-16 21:25:45,092 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:25:45,093 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:25:45,093 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 21:25:45,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:25:45,093 INFO L82 PathProgramCache]: Analyzing trace with hash 840250241, now seen corresponding path program 74 times [2020-01-16 21:25:45,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:25:45,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292926276] [2020-01-16 21:25:45,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:25:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:25:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:25:45,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292926276] [2020-01-16 21:25:45,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:25:45,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:25:45,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025372219] [2020-01-16 21:25:45,239 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:25:45,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:25:45,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:25:45,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:25:45,239 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:25:45,240 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 452 transitions. Second operand 7 states. [2020-01-16 21:25:45,240 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:25:45,240 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:25:45,240 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:25:50,369 INFO L129 PetriNetUnfolder]: 119/1013 cut-off events. [2020-01-16 21:25:50,369 INFO L130 PetriNetUnfolder]: For 1667982/1668329 co-relation queries the response was YES. [2020-01-16 21:25:50,411 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 21:25:50,419 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 189 selfloop transitions, 259 changer transitions [2020-01-16 21:25:50,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:25:50,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:25:50,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:25:50,420 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:25:50,420 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:25:50,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:25:50,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:25:50,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:25:50,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:25:50,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:25:50,421 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:25:50,421 INFO L174 Difference]: Start difference. First operand has 594 places, 452 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:25:50,433 INFO L199 Difference]: Finished difference. Result has 602 places, 454 transitions [2020-01-16 21:25:50,434 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 21:25:50,434 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 602 places, 454 transitions [2020-01-16 21:25:50,434 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 602 places, 454 transitions [2020-01-16 21:25:53,615 INFO L129 PetriNetUnfolder]: 119/1013 cut-off events. [2020-01-16 21:25:53,615 INFO L130 PetriNetUnfolder]: For 1687082/1687278 co-relation queries the response was YES. [2020-01-16 21:25:53,659 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 21:25:53,670 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 602 places, 0 of 454 transitions, 120 of 51683 flow. [2020-01-16 21:25:53,670 INFO L478 AbstractCegarLoop]: Abstraction has has 601 places, 454 transitions [2020-01-16 21:25:53,670 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:25:55,982 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:25:55,982 INFO L130 PetriNetUnfolder]: For 1686415/1686551 co-relation queries the response was YES. [2020-01-16 21:25:55,982 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:25:55,982 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:25:55,983 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 21:25:55,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:25:55,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1157903233, now seen corresponding path program 75 times [2020-01-16 21:25:55,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:25:55,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281292546] [2020-01-16 21:25:55,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:25:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:25:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:25:56,121 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281292546] [2020-01-16 21:25:56,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:25:56,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:25:56,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474176360] [2020-01-16 21:25:56,122 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:25:56,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:25:56,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:25:56,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:25:56,123 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:25:56,124 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 454 transitions. Second operand 7 states. [2020-01-16 21:25:56,124 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:25:56,124 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:25:56,124 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:26:01,144 INFO L129 PetriNetUnfolder]: 119/1012 cut-off events. [2020-01-16 21:26:01,145 INFO L130 PetriNetUnfolder]: For 1710607/1710999 co-relation queries the response was YES. [2020-01-16 21:26:01,186 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 21:26:01,194 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 189 selfloop transitions, 259 changer transitions [2020-01-16 21:26:01,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:26:01,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:26:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:26:01,195 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:26:01,195 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:26:01,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:26:01,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:26:01,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:26:01,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:26:01,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:26:01,196 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:26:01,196 INFO L174 Difference]: Start difference. First operand has 601 places, 454 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:26:01,208 INFO L199 Difference]: Finished difference. Result has 608 places, 454 transitions [2020-01-16 21:26:01,209 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 21:26:01,209 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 608 places, 454 transitions [2020-01-16 21:26:01,209 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 608 places, 454 transitions [2020-01-16 21:26:03,984 INFO L129 PetriNetUnfolder]: 119/1012 cut-off events. [2020-01-16 21:26:03,984 INFO L130 PetriNetUnfolder]: For 1726683/1726819 co-relation queries the response was YES. [2020-01-16 21:26:04,022 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 21:26:04,034 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 608 places, 0 of 454 transitions, 120 of 52201 flow. [2020-01-16 21:26:04,034 INFO L478 AbstractCegarLoop]: Abstraction has has 607 places, 454 transitions [2020-01-16 21:26:04,034 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:26:06,788 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:26:06,788 INFO L130 PetriNetUnfolder]: For 1727479/1727659 co-relation queries the response was YES. [2020-01-16 21:26:06,788 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:26:06,788 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:26:06,788 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 21:26:06,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:26:06,789 INFO L82 PathProgramCache]: Analyzing trace with hash 255435491, now seen corresponding path program 76 times [2020-01-16 21:26:06,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:26:06,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415739674] [2020-01-16 21:26:06,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:26:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:26:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:26:06,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415739674] [2020-01-16 21:26:06,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:26:06,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:26:06,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929313741] [2020-01-16 21:26:06,925 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:26:06,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:26:06,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:26:06,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:26:06,925 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:26:06,926 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 454 transitions. Second operand 7 states. [2020-01-16 21:26:06,926 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:26:06,926 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:26:06,926 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:26:11,784 INFO L129 PetriNetUnfolder]: 119/1011 cut-off events. [2020-01-16 21:26:11,784 INFO L130 PetriNetUnfolder]: For 1751189/1751588 co-relation queries the response was YES. [2020-01-16 21:26:11,821 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 21:26:11,828 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 188 selfloop transitions, 259 changer transitions [2020-01-16 21:26:11,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:26:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:26:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:26:11,829 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:26:11,829 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:26:11,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:26:11,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:26:11,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:26:11,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:26:11,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:26:11,831 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:26:11,831 INFO L174 Difference]: Start difference. First operand has 607 places, 454 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:26:11,849 INFO L199 Difference]: Finished difference. Result has 614 places, 454 transitions [2020-01-16 21:26:11,849 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 21:26:11,850 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 614 places, 454 transitions [2020-01-16 21:26:11,850 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 614 places, 454 transitions [2020-01-16 21:26:14,962 INFO L129 PetriNetUnfolder]: 119/1011 cut-off events. [2020-01-16 21:26:14,962 INFO L130 PetriNetUnfolder]: For 1768202/1768382 co-relation queries the response was YES. [2020-01-16 21:26:14,997 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 21:26:15,009 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 614 places, 0 of 454 transitions, 120 of 52719 flow. [2020-01-16 21:26:15,009 INFO L478 AbstractCegarLoop]: Abstraction has has 613 places, 454 transitions [2020-01-16 21:26:15,009 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:26:17,714 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:26:17,714 INFO L130 PetriNetUnfolder]: For 1767406/1767542 co-relation queries the response was YES. [2020-01-16 21:26:17,714 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:26:17,714 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:26:17,714 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 21:26:17,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:26:17,714 INFO L82 PathProgramCache]: Analyzing trace with hash 713918765, now seen corresponding path program 77 times [2020-01-16 21:26:17,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:26:17,715 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748033757] [2020-01-16 21:26:17,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:26:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:26:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:26:17,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748033757] [2020-01-16 21:26:17,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:26:17,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:26:17,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149000049] [2020-01-16 21:26:17,886 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:26:17,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:26:17,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:26:17,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:26:17,887 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:26:17,887 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 454 transitions. Second operand 7 states. [2020-01-16 21:26:17,887 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:26:17,887 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:26:17,888 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:26:23,250 INFO L129 PetriNetUnfolder]: 119/1010 cut-off events. [2020-01-16 21:26:23,250 INFO L130 PetriNetUnfolder]: For 1792149/1792548 co-relation queries the response was YES. [2020-01-16 21:26:23,286 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 21:26:23,293 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:26:23,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:26:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:26:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:26:23,294 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:26:23,294 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:26:23,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:26:23,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:26:23,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:26:23,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:26:23,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:26:23,295 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:26:23,295 INFO L174 Difference]: Start difference. First operand has 613 places, 454 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:26:23,308 INFO L199 Difference]: Finished difference. Result has 620 places, 454 transitions [2020-01-16 21:26:23,308 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 21:26:23,309 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 620 places, 454 transitions [2020-01-16 21:26:23,309 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 620 places, 454 transitions [2020-01-16 21:26:27,616 INFO L129 PetriNetUnfolder]: 119/1010 cut-off events. [2020-01-16 21:26:27,616 INFO L130 PetriNetUnfolder]: For 1808410/1808546 co-relation queries the response was YES. [2020-01-16 21:26:27,651 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 21:26:27,663 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 620 places, 0 of 454 transitions, 120 of 53237 flow. [2020-01-16 21:26:27,663 INFO L478 AbstractCegarLoop]: Abstraction has has 619 places, 454 transitions [2020-01-16 21:26:27,663 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:26:30,435 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:26:30,435 INFO L130 PetriNetUnfolder]: For 1808410/1808546 co-relation queries the response was YES. [2020-01-16 21:26:30,435 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:26:30,435 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:26:30,435 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 21:26:30,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:26:30,436 INFO L82 PathProgramCache]: Analyzing trace with hash -401119265, now seen corresponding path program 78 times [2020-01-16 21:26:30,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:26:30,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632769079] [2020-01-16 21:26:30,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:26:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:26:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:26:30,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632769079] [2020-01-16 21:26:30,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:26:30,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:26:30,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467820356] [2020-01-16 21:26:30,645 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:26:30,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:26:30,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:26:30,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:26:30,647 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:26:30,647 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 454 transitions. Second operand 7 states. [2020-01-16 21:26:30,647 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:26:30,648 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:26:30,648 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:26:36,448 INFO L129 PetriNetUnfolder]: 119/1009 cut-off events. [2020-01-16 21:26:36,448 INFO L130 PetriNetUnfolder]: For 1833938/1834464 co-relation queries the response was YES. [2020-01-16 21:26:36,485 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 21:26:36,493 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 189 selfloop transitions, 259 changer transitions [2020-01-16 21:26:36,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:26:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:26:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:26:36,494 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:26:36,494 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:26:36,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:26:36,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:26:36,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:26:36,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:26:36,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:26:36,495 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:26:36,495 INFO L174 Difference]: Start difference. First operand has 619 places, 454 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:26:36,508 INFO L199 Difference]: Finished difference. Result has 626 places, 454 transitions [2020-01-16 21:26:36,508 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 21:26:36,508 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 626 places, 454 transitions [2020-01-16 21:26:36,508 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 626 places, 454 transitions [2020-01-16 21:26:39,940 INFO L129 PetriNetUnfolder]: 119/1009 cut-off events. [2020-01-16 21:26:39,940 INFO L130 PetriNetUnfolder]: For 1850013/1850149 co-relation queries the response was YES. [2020-01-16 21:26:39,986 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 21:26:39,998 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 626 places, 0 of 454 transitions, 120 of 53755 flow. [2020-01-16 21:26:39,998 INFO L478 AbstractCegarLoop]: Abstraction has has 625 places, 454 transitions [2020-01-16 21:26:39,998 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:26:42,702 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:26:42,703 INFO L130 PetriNetUnfolder]: For 1850013/1850149 co-relation queries the response was YES. [2020-01-16 21:26:42,703 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:26:42,703 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:26:42,703 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 21:26:42,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:26:42,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1920797981, now seen corresponding path program 79 times [2020-01-16 21:26:42,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:26:42,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107362808] [2020-01-16 21:26:42,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:26:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:26:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:26:42,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107362808] [2020-01-16 21:26:42,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:26:42,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:26:42,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965621016] [2020-01-16 21:26:42,878 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:26:42,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:26:42,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:26:42,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:26:42,878 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:26:42,879 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 454 transitions. Second operand 7 states. [2020-01-16 21:26:42,879 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:26:42,879 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:26:42,879 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:26:48,266 INFO L129 PetriNetUnfolder]: 119/1008 cut-off events. [2020-01-16 21:26:48,266 INFO L130 PetriNetUnfolder]: For 1875786/1876315 co-relation queries the response was YES. [2020-01-16 21:26:48,310 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 21:26:48,318 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:26:48,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:26:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:26:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:26:48,319 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:26:48,319 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:26:48,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:26:48,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:26:48,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:26:48,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:26:48,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:26:48,320 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:26:48,320 INFO L174 Difference]: Start difference. First operand has 625 places, 454 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:26:48,333 INFO L199 Difference]: Finished difference. Result has 632 places, 454 transitions [2020-01-16 21:26:48,333 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 21:26:48,334 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 632 places, 454 transitions [2020-01-16 21:26:48,334 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 632 places, 454 transitions [2020-01-16 21:26:51,701 INFO L129 PetriNetUnfolder]: 119/1008 cut-off events. [2020-01-16 21:26:51,702 INFO L130 PetriNetUnfolder]: For 1891959/1892095 co-relation queries the response was YES. [2020-01-16 21:26:51,747 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 21:26:51,759 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 632 places, 0 of 454 transitions, 120 of 54273 flow. [2020-01-16 21:26:51,759 INFO L478 AbstractCegarLoop]: Abstraction has has 631 places, 454 transitions [2020-01-16 21:26:51,760 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:26:54,350 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:26:54,350 INFO L130 PetriNetUnfolder]: For 1891959/1892095 co-relation queries the response was YES. [2020-01-16 21:26:54,351 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:26:54,351 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:26:54,351 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 21:26:54,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:26:54,351 INFO L82 PathProgramCache]: Analyzing trace with hash 150993627, now seen corresponding path program 80 times [2020-01-16 21:26:54,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:26:54,351 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399036350] [2020-01-16 21:26:54,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:26:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:26:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:26:54,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399036350] [2020-01-16 21:26:54,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:26:54,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:26:54,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139142297] [2020-01-16 21:26:54,486 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:26:54,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:26:54,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:26:54,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:26:54,487 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:26:54,487 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 454 transitions. Second operand 7 states. [2020-01-16 21:26:54,488 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:26:54,488 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:26:54,488 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:26:59,898 INFO L129 PetriNetUnfolder]: 119/1007 cut-off events. [2020-01-16 21:26:59,899 INFO L130 PetriNetUnfolder]: For 1917948/1918477 co-relation queries the response was YES. [2020-01-16 21:26:59,942 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 21:26:59,951 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:26:59,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:26:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:26:59,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:26:59,952 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:26:59,952 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:26:59,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:26:59,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:26:59,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:26:59,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:26:59,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:26:59,953 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:26:59,953 INFO L174 Difference]: Start difference. First operand has 631 places, 454 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:26:59,967 INFO L199 Difference]: Finished difference. Result has 639 places, 456 transitions [2020-01-16 21:26:59,967 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 21:26:59,967 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 639 places, 456 transitions [2020-01-16 21:26:59,967 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 639 places, 456 transitions [2020-01-16 21:27:03,298 INFO L129 PetriNetUnfolder]: 119/1007 cut-off events. [2020-01-16 21:27:03,298 INFO L130 PetriNetUnfolder]: For 1937112/1937251 co-relation queries the response was YES. [2020-01-16 21:27:03,343 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 21:27:03,355 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 639 places, 0 of 456 transitions, 120 of 55076 flow. [2020-01-16 21:27:03,355 INFO L478 AbstractCegarLoop]: Abstraction has has 638 places, 456 transitions [2020-01-16 21:27:03,355 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:27:05,778 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:27:05,778 INFO L130 PetriNetUnfolder]: For 1936629/1936722 co-relation queries the response was YES. [2020-01-16 21:27:05,778 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:27:05,778 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:27:05,779 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 21:27:05,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:27:05,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1459244921, now seen corresponding path program 81 times [2020-01-16 21:27:05,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:27:05,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247566949] [2020-01-16 21:27:05,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:27:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:27:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:27:05,963 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247566949] [2020-01-16 21:27:05,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:27:05,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:27:05,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805437427] [2020-01-16 21:27:05,964 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:27:05,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:27:05,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:27:05,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:27:05,965 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:27:05,965 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 456 transitions. Second operand 7 states. [2020-01-16 21:27:05,965 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:27:05,965 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:27:05,965 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:27:11,979 INFO L129 PetriNetUnfolder]: 119/1006 cut-off events. [2020-01-16 21:27:11,979 INFO L130 PetriNetUnfolder]: For 1962863/1963275 co-relation queries the response was YES. [2020-01-16 21:27:12,024 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 21:27:12,032 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:27:12,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:27:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:27:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:27:12,033 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:27:12,033 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:27:12,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:27:12,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:27:12,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:27:12,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:27:12,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:27:12,034 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:27:12,034 INFO L174 Difference]: Start difference. First operand has 638 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:27:12,047 INFO L199 Difference]: Finished difference. Result has 645 places, 456 transitions [2020-01-16 21:27:12,047 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 21:27:12,048 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 645 places, 456 transitions [2020-01-16 21:27:12,048 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 645 places, 456 transitions [2020-01-16 21:27:15,396 INFO L129 PetriNetUnfolder]: 119/1006 cut-off events. [2020-01-16 21:27:15,397 INFO L130 PetriNetUnfolder]: For 1979085/1979178 co-relation queries the response was YES. [2020-01-16 21:27:15,441 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 21:27:15,453 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 645 places, 0 of 456 transitions, 120 of 55594 flow. [2020-01-16 21:27:15,454 INFO L478 AbstractCegarLoop]: Abstraction has has 644 places, 456 transitions [2020-01-16 21:27:15,454 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:27:18,052 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:27:18,053 INFO L130 PetriNetUnfolder]: For 1979362/1979457 co-relation queries the response was YES. [2020-01-16 21:27:18,053 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:27:18,053 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:27:18,053 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 21:27:18,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:27:18,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1065151123, now seen corresponding path program 82 times [2020-01-16 21:27:18,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:27:18,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885393157] [2020-01-16 21:27:18,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:27:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:27:18,207 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 21:27:18,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885393157] [2020-01-16 21:27:18,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:27:18,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:27:18,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475961161] [2020-01-16 21:27:18,208 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:27:18,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:27:18,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:27:18,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:27:18,209 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:27:18,210 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 456 transitions. Second operand 7 states. [2020-01-16 21:27:18,210 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:27:18,210 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:27:18,210 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:27:23,675 INFO L129 PetriNetUnfolder]: 119/1005 cut-off events. [2020-01-16 21:27:23,676 INFO L130 PetriNetUnfolder]: For 2005848/2006265 co-relation queries the response was YES. [2020-01-16 21:27:23,720 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 21:27:23,728 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:27:23,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:27:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:27:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:27:23,729 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:27:23,729 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:27:23,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:27:23,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:27:23,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:27:23,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:27:23,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:27:23,730 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:27:23,731 INFO L174 Difference]: Start difference. First operand has 644 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:27:23,743 INFO L199 Difference]: Finished difference. Result has 651 places, 456 transitions [2020-01-16 21:27:23,744 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 21:27:23,744 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 651 places, 456 transitions [2020-01-16 21:27:23,744 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 651 places, 456 transitions [2020-01-16 21:27:26,985 INFO L129 PetriNetUnfolder]: 119/1005 cut-off events. [2020-01-16 21:27:26,985 INFO L130 PetriNetUnfolder]: For 2022657/2022752 co-relation queries the response was YES. [2020-01-16 21:27:27,029 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 21:27:27,042 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 651 places, 0 of 456 transitions, 120 of 56112 flow. [2020-01-16 21:27:27,042 INFO L478 AbstractCegarLoop]: Abstraction has has 650 places, 456 transitions [2020-01-16 21:27:27,042 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:27:29,711 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:27:29,711 INFO L130 PetriNetUnfolder]: For 2022657/2022752 co-relation queries the response was YES. [2020-01-16 21:27:29,711 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:27:29,711 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:27:29,712 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 21:27:29,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:27:29,712 INFO L82 PathProgramCache]: Analyzing trace with hash 12344295, now seen corresponding path program 83 times [2020-01-16 21:27:29,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:27:29,712 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531444219] [2020-01-16 21:27:29,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:27:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:27:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:27:29,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531444219] [2020-01-16 21:27:29,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:27:29,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:27:29,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286298461] [2020-01-16 21:27:29,893 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:27:29,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:27:29,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:27:29,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:27:29,894 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:27:29,895 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 456 transitions. Second operand 7 states. [2020-01-16 21:27:29,895 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:27:29,895 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:27:29,895 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:27:35,342 INFO L129 PetriNetUnfolder]: 119/1004 cut-off events. [2020-01-16 21:27:35,343 INFO L130 PetriNetUnfolder]: For 2049429/2049846 co-relation queries the response was YES. [2020-01-16 21:27:35,386 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 21:27:35,395 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:27:35,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:27:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:27:35,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:27:35,396 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:27:35,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:27:35,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:27:35,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:27:35,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:27:35,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:27:35,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:27:35,397 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:27:35,397 INFO L174 Difference]: Start difference. First operand has 650 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:27:35,411 INFO L199 Difference]: Finished difference. Result has 657 places, 456 transitions [2020-01-16 21:27:35,411 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 21:27:35,411 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 657 places, 456 transitions [2020-01-16 21:27:35,411 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 657 places, 456 transitions [2020-01-16 21:27:38,663 INFO L129 PetriNetUnfolder]: 119/1004 cut-off events. [2020-01-16 21:27:38,663 INFO L130 PetriNetUnfolder]: For 2065928/2066022 co-relation queries the response was YES. [2020-01-16 21:27:38,707 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 21:27:38,719 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 657 places, 0 of 456 transitions, 120 of 56630 flow. [2020-01-16 21:27:38,720 INFO L478 AbstractCegarLoop]: Abstraction has has 656 places, 456 transitions [2020-01-16 21:27:38,720 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:27:41,450 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:27:41,450 INFO L130 PetriNetUnfolder]: For 2066152/2066257 co-relation queries the response was YES. [2020-01-16 21:27:41,450 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:27:41,450 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:27:41,450 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 21:27:41,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:27:41,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1125869013, now seen corresponding path program 84 times [2020-01-16 21:27:41,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:27:41,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521308894] [2020-01-16 21:27:41,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:27:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:27:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:27:41,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521308894] [2020-01-16 21:27:41,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:27:41,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:27:41,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009217243] [2020-01-16 21:27:41,588 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:27:41,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:27:41,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:27:41,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:27:41,589 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:27:41,589 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 456 transitions. Second operand 7 states. [2020-01-16 21:27:41,589 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:27:41,589 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:27:41,589 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:27:47,079 INFO L129 PetriNetUnfolder]: 119/1003 cut-off events. [2020-01-16 21:27:47,079 INFO L130 PetriNetUnfolder]: For 2092468/2092882 co-relation queries the response was YES. [2020-01-16 21:27:47,124 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 21:27:47,132 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:27:47,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:27:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:27:47,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:27:47,133 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:27:47,133 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:27:47,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:27:47,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:27:47,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:27:47,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:27:47,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:27:47,134 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:27:47,135 INFO L174 Difference]: Start difference. First operand has 656 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:27:47,149 INFO L199 Difference]: Finished difference. Result has 663 places, 456 transitions [2020-01-16 21:27:47,150 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 21:27:47,150 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 663 places, 456 transitions [2020-01-16 21:27:47,150 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 663 places, 456 transitions [2020-01-16 21:27:50,423 INFO L129 PetriNetUnfolder]: 119/1003 cut-off events. [2020-01-16 21:27:50,424 INFO L130 PetriNetUnfolder]: For 2109801/2109906 co-relation queries the response was YES. [2020-01-16 21:27:50,468 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 21:27:50,480 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 663 places, 0 of 456 transitions, 120 of 57148 flow. [2020-01-16 21:27:50,481 INFO L478 AbstractCegarLoop]: Abstraction has has 662 places, 456 transitions [2020-01-16 21:27:50,481 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:27:53,238 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:27:53,238 INFO L130 PetriNetUnfolder]: For 2109783/2109921 co-relation queries the response was YES. [2020-01-16 21:27:53,238 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:27:53,238 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:27:53,238 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 21:27:53,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:27:53,238 INFO L82 PathProgramCache]: Analyzing trace with hash -110083621, now seen corresponding path program 85 times [2020-01-16 21:27:53,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:27:53,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464085441] [2020-01-16 21:27:53,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:27:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:27:53,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:27:53,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464085441] [2020-01-16 21:27:53,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:27:53,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:27:53,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126464088] [2020-01-16 21:27:53,377 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:27:53,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:27:53,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:27:53,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:27:53,378 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:27:53,379 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 456 transitions. Second operand 7 states. [2020-01-16 21:27:53,379 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:27:53,379 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:27:53,379 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:27:59,534 INFO L129 PetriNetUnfolder]: 119/1002 cut-off events. [2020-01-16 21:27:59,534 INFO L130 PetriNetUnfolder]: For 2136679/2137098 co-relation queries the response was YES. [2020-01-16 21:27:59,579 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 21:27:59,587 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:27:59,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:27:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:27:59,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:27:59,588 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:27:59,588 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:27:59,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:27:59,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:27:59,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:27:59,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:27:59,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:27:59,590 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:27:59,590 INFO L174 Difference]: Start difference. First operand has 662 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:27:59,603 INFO L199 Difference]: Finished difference. Result has 669 places, 456 transitions [2020-01-16 21:27:59,604 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 21:27:59,604 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 669 places, 456 transitions [2020-01-16 21:27:59,604 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 669 places, 456 transitions [2020-01-16 21:28:02,962 INFO L129 PetriNetUnfolder]: 119/1002 cut-off events. [2020-01-16 21:28:02,962 INFO L130 PetriNetUnfolder]: For 2154135/2154276 co-relation queries the response was YES. [2020-01-16 21:28:03,006 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 21:28:03,022 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 669 places, 0 of 456 transitions, 120 of 57666 flow. [2020-01-16 21:28:03,022 INFO L478 AbstractCegarLoop]: Abstraction has has 668 places, 456 transitions [2020-01-16 21:28:03,022 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:28:05,840 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:28:05,841 INFO L130 PetriNetUnfolder]: For 2154135/2154276 co-relation queries the response was YES. [2020-01-16 21:28:05,841 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:28:05,841 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:28:05,841 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 21:28:05,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:28:05,841 INFO L82 PathProgramCache]: Analyzing trace with hash 579279693, now seen corresponding path program 86 times [2020-01-16 21:28:05,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:28:05,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456144898] [2020-01-16 21:28:05,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:28:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:28:06,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:28:06,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456144898] [2020-01-16 21:28:06,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:28:06,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:28:06,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809228154] [2020-01-16 21:28:06,006 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:28:06,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:28:06,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:28:06,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:28:06,007 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:28:06,007 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 456 transitions. Second operand 7 states. [2020-01-16 21:28:06,007 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:28:06,007 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:28:06,007 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:28:11,598 INFO L129 PetriNetUnfolder]: 119/1001 cut-off events. [2020-01-16 21:28:11,599 INFO L130 PetriNetUnfolder]: For 2181246/2181669 co-relation queries the response was YES. [2020-01-16 21:28:11,644 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 21:28:11,651 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:28:11,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:28:11,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:28:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:28:11,652 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:28:11,652 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:28:11,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:28:11,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:28:11,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:28:11,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:28:11,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:28:11,654 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:28:11,654 INFO L174 Difference]: Start difference. First operand has 668 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:28:11,675 INFO L199 Difference]: Finished difference. Result has 675 places, 456 transitions [2020-01-16 21:28:11,676 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 21:28:11,676 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 675 places, 456 transitions [2020-01-16 21:28:11,676 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 675 places, 456 transitions [2020-01-16 21:28:14,974 INFO L129 PetriNetUnfolder]: 119/1001 cut-off events. [2020-01-16 21:28:14,974 INFO L130 PetriNetUnfolder]: For 2198501/2198642 co-relation queries the response was YES. [2020-01-16 21:28:15,019 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 21:28:15,032 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 675 places, 0 of 456 transitions, 120 of 58184 flow. [2020-01-16 21:28:15,032 INFO L478 AbstractCegarLoop]: Abstraction has has 674 places, 456 transitions [2020-01-16 21:28:15,032 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:28:17,771 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:28:17,771 INFO L130 PetriNetUnfolder]: For 2198018/2198113 co-relation queries the response was YES. [2020-01-16 21:28:17,771 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:28:17,771 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:28:17,771 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 21:28:17,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:28:17,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1387141167, now seen corresponding path program 87 times [2020-01-16 21:28:17,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:28:17,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104868522] [2020-01-16 21:28:17,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:28:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:28:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:28:17,916 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104868522] [2020-01-16 21:28:17,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:28:17,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:28:17,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737112171] [2020-01-16 21:28:17,916 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:28:17,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:28:17,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:28:17,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:28:17,917 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:28:17,917 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 456 transitions. Second operand 7 states. [2020-01-16 21:28:17,917 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:28:17,917 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:28:17,917 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:28:23,549 INFO L129 PetriNetUnfolder]: 119/1000 cut-off events. [2020-01-16 21:28:23,550 INFO L130 PetriNetUnfolder]: For 2228965/2229798 co-relation queries the response was YES. [2020-01-16 21:28:23,595 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 21:28:23,603 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:28:23,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:28:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:28:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:28:23,604 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:28:23,604 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:28:23,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:28:23,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:28:23,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:28:23,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:28:23,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:28:23,605 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:28:23,605 INFO L174 Difference]: Start difference. First operand has 674 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:28:23,619 INFO L199 Difference]: Finished difference. Result has 681 places, 456 transitions [2020-01-16 21:28:23,620 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 21:28:23,620 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 681 places, 456 transitions [2020-01-16 21:28:23,620 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 681 places, 456 transitions [2020-01-16 21:28:27,019 INFO L129 PetriNetUnfolder]: 119/1000 cut-off events. [2020-01-16 21:28:27,020 INFO L130 PetriNetUnfolder]: For 2242943/2243037 co-relation queries the response was YES. [2020-01-16 21:28:27,066 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 21:28:27,079 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 681 places, 0 of 456 transitions, 120 of 58702 flow. [2020-01-16 21:28:27,079 INFO L478 AbstractCegarLoop]: Abstraction has has 680 places, 456 transitions [2020-01-16 21:28:27,079 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:28:29,742 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:28:29,742 INFO L130 PetriNetUnfolder]: For 2242943/2243037 co-relation queries the response was YES. [2020-01-16 21:28:29,742 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:28:29,743 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:28:29,743 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 21:28:29,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:28:29,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1634645761, now seen corresponding path program 88 times [2020-01-16 21:28:29,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:28:29,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974433053] [2020-01-16 21:28:29,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:28:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:28:29,883 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 21:28:29,883 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974433053] [2020-01-16 21:28:29,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:28:29,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:28:29,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038502402] [2020-01-16 21:28:29,884 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:28:29,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:28:29,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:28:29,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:28:29,885 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:28:29,886 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 456 transitions. Second operand 7 states. [2020-01-16 21:28:29,886 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:28:29,886 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:28:29,886 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:28:35,587 INFO L129 PetriNetUnfolder]: 119/999 cut-off events. [2020-01-16 21:28:35,587 INFO L130 PetriNetUnfolder]: For 2274135/2274966 co-relation queries the response was YES. [2020-01-16 21:28:35,634 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 21:28:35,642 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 21:28:35,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:28:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:28:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:28:35,643 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:28:35,643 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:28:35,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:28:35,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:28:35,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:28:35,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:28:35,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:28:35,644 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:28:35,644 INFO L174 Difference]: Start difference. First operand has 680 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:28:35,658 INFO L199 Difference]: Finished difference. Result has 687 places, 456 transitions [2020-01-16 21:28:35,658 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 21:28:35,659 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 687 places, 456 transitions [2020-01-16 21:28:35,659 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 687 places, 456 transitions [2020-01-16 21:28:39,137 INFO L129 PetriNetUnfolder]: 119/999 cut-off events. [2020-01-16 21:28:39,137 INFO L130 PetriNetUnfolder]: For 2288372/2288466 co-relation queries the response was YES. [2020-01-16 21:28:39,185 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 21:28:39,198 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 687 places, 0 of 456 transitions, 120 of 59220 flow. [2020-01-16 21:28:39,198 INFO L478 AbstractCegarLoop]: Abstraction has has 686 places, 456 transitions [2020-01-16 21:28:39,199 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:28:42,091 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:28:42,092 INFO L130 PetriNetUnfolder]: For 2288372/2288466 co-relation queries the response was YES. [2020-01-16 21:28:42,092 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:28:42,092 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:28:42,092 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 21:28:42,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:28:42,092 INFO L82 PathProgramCache]: Analyzing trace with hash 545878333, now seen corresponding path program 89 times [2020-01-16 21:28:42,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:28:42,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845368931] [2020-01-16 21:28:42,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:28:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:28:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:28:42,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845368931] [2020-01-16 21:28:42,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:28:42,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:28:42,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911380108] [2020-01-16 21:28:42,255 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:28:42,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:28:42,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:28:42,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:28:42,256 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:28:42,256 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 456 transitions. Second operand 7 states. [2020-01-16 21:28:42,256 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:28:42,256 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:28:42,256 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:28:48,052 INFO L129 PetriNetUnfolder]: 119/998 cut-off events. [2020-01-16 21:28:48,053 INFO L130 PetriNetUnfolder]: For 2320067/2320888 co-relation queries the response was YES. [2020-01-16 21:28:48,099 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 21:28:48,107 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 21:28:48,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:28:48,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:28:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:28:48,109 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:28:48,109 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:28:48,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:28:48,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:28:48,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:28:48,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:28:48,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:28:48,110 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:28:48,110 INFO L174 Difference]: Start difference. First operand has 686 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:28:48,124 INFO L199 Difference]: Finished difference. Result has 693 places, 456 transitions [2020-01-16 21:28:48,124 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 21:28:48,124 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 693 places, 456 transitions [2020-01-16 21:28:48,124 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 693 places, 456 transitions [2020-01-16 21:28:51,721 INFO L129 PetriNetUnfolder]: 119/998 cut-off events. [2020-01-16 21:28:51,722 INFO L130 PetriNetUnfolder]: For 2334115/2334209 co-relation queries the response was YES. [2020-01-16 21:28:51,770 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 21:28:51,783 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 693 places, 0 of 456 transitions, 120 of 59738 flow. [2020-01-16 21:28:51,783 INFO L478 AbstractCegarLoop]: Abstraction has has 692 places, 456 transitions [2020-01-16 21:28:51,783 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:28:54,738 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:28:54,738 INFO L130 PetriNetUnfolder]: For 2334717/2334834 co-relation queries the response was YES. [2020-01-16 21:28:54,738 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:28:54,739 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:28:54,739 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 21:28:54,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:28:54,739 INFO L82 PathProgramCache]: Analyzing trace with hash 448349463, now seen corresponding path program 90 times [2020-01-16 21:28:54,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:28:54,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169162583] [2020-01-16 21:28:54,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:28:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:28:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:28:54,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169162583] [2020-01-16 21:28:54,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:28:54,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:28:54,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650042541] [2020-01-16 21:28:54,948 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:28:54,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:28:54,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:28:54,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:28:54,949 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:28:54,949 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 456 transitions. Second operand 7 states. [2020-01-16 21:28:54,949 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:28:54,949 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:28:54,950 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:29:01,596 INFO L129 PetriNetUnfolder]: 119/997 cut-off events. [2020-01-16 21:29:01,596 INFO L130 PetriNetUnfolder]: For 2365582/2366358 co-relation queries the response was YES. [2020-01-16 21:29:01,637 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 21:29:01,645 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:29:01,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:29:01,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:29:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:29:01,646 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:29:01,646 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:29:01,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:29:01,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:29:01,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:29:01,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:29:01,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:29:01,647 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:29:01,648 INFO L174 Difference]: Start difference. First operand has 692 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:29:01,664 INFO L199 Difference]: Finished difference. Result has 699 places, 456 transitions [2020-01-16 21:29:01,665 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 21:29:01,665 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 699 places, 456 transitions [2020-01-16 21:29:01,665 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 699 places, 456 transitions [2020-01-16 21:29:05,383 INFO L129 PetriNetUnfolder]: 119/997 cut-off events. [2020-01-16 21:29:05,383 INFO L130 PetriNetUnfolder]: For 2380803/2380920 co-relation queries the response was YES. [2020-01-16 21:29:05,432 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 21:29:05,446 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 699 places, 0 of 456 transitions, 120 of 60256 flow. [2020-01-16 21:29:05,446 INFO L478 AbstractCegarLoop]: Abstraction has has 698 places, 456 transitions [2020-01-16 21:29:05,446 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:29:08,522 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:29:08,522 INFO L130 PetriNetUnfolder]: For 2380803/2380920 co-relation queries the response was YES. [2020-01-16 21:29:08,522 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:29:08,522 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:29:08,523 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 21:29:08,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:29:08,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2088018999, now seen corresponding path program 91 times [2020-01-16 21:29:08,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:29:08,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875855716] [2020-01-16 21:29:08,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:29:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:29:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:29:08,674 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875855716] [2020-01-16 21:29:08,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:29:08,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:29:08,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366114937] [2020-01-16 21:29:08,675 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:29:08,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:29:08,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:29:08,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:29:08,676 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:29:08,676 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 456 transitions. Second operand 7 states. [2020-01-16 21:29:08,677 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:29:08,677 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:29:08,677 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:29:09,960 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2020-01-16 21:29:14,544 INFO L129 PetriNetUnfolder]: 119/996 cut-off events. [2020-01-16 21:29:14,544 INFO L130 PetriNetUnfolder]: For 2411914/2412690 co-relation queries the response was YES. [2020-01-16 21:29:14,585 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 21:29:14,594 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:29:14,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:29:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:29:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:29:14,595 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:29:14,595 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:29:14,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:29:14,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:29:14,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:29:14,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:29:14,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:29:14,596 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:29:14,596 INFO L174 Difference]: Start difference. First operand has 698 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:29:14,610 INFO L199 Difference]: Finished difference. Result has 705 places, 456 transitions [2020-01-16 21:29:14,611 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 21:29:14,611 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 705 places, 456 transitions [2020-01-16 21:29:14,611 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 705 places, 456 transitions [2020-01-16 21:29:18,428 INFO L129 PetriNetUnfolder]: 119/996 cut-off events. [2020-01-16 21:29:18,428 INFO L130 PetriNetUnfolder]: For 2427254/2427375 co-relation queries the response was YES. [2020-01-16 21:29:18,466 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 21:29:18,479 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 705 places, 0 of 456 transitions, 120 of 60774 flow. [2020-01-16 21:29:18,479 INFO L478 AbstractCegarLoop]: Abstraction has has 704 places, 456 transitions [2020-01-16 21:29:18,479 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:29:21,697 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:29:21,698 INFO L130 PetriNetUnfolder]: For 2427254/2427375 co-relation queries the response was YES. [2020-01-16 21:29:21,698 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:29:21,698 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:29:21,698 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 21:29:21,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:29:21,698 INFO L82 PathProgramCache]: Analyzing trace with hash 742191861, now seen corresponding path program 92 times [2020-01-16 21:29:21,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:29:21,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677234302] [2020-01-16 21:29:21,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:29:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:29:21,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:29:21,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677234302] [2020-01-16 21:29:21,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:29:21,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:29:21,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769680404] [2020-01-16 21:29:21,835 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:29:21,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:29:21,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:29:21,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:29:21,836 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:29:21,836 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 704 places, 456 transitions. Second operand 7 states. [2020-01-16 21:29:21,836 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:29:21,836 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:29:21,836 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:29:27,673 INFO L129 PetriNetUnfolder]: 119/995 cut-off events. [2020-01-16 21:29:27,673 INFO L130 PetriNetUnfolder]: For 2458581/2459369 co-relation queries the response was YES. [2020-01-16 21:29:27,715 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 21:29:27,723 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:29:27,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:29:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:29:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:29:27,725 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:29:27,725 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:29:27,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:29:27,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:29:27,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:29:27,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:29:27,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:29:27,726 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:29:27,726 INFO L174 Difference]: Start difference. First operand has 704 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:29:27,746 INFO L199 Difference]: Finished difference. Result has 711 places, 456 transitions [2020-01-16 21:29:27,746 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 21:29:27,746 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 711 places, 456 transitions [2020-01-16 21:29:27,746 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 711 places, 456 transitions [2020-01-16 21:29:31,243 INFO L129 PetriNetUnfolder]: 119/995 cut-off events. [2020-01-16 21:29:31,243 INFO L130 PetriNetUnfolder]: For 2474288/2474412 co-relation queries the response was YES. [2020-01-16 21:29:31,284 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 21:29:31,299 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 711 places, 0 of 456 transitions, 120 of 61292 flow. [2020-01-16 21:29:31,299 INFO L478 AbstractCegarLoop]: Abstraction has has 710 places, 456 transitions [2020-01-16 21:29:31,299 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:29:34,680 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:29:34,681 INFO L130 PetriNetUnfolder]: For 2474288/2474412 co-relation queries the response was YES. [2020-01-16 21:29:34,681 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:29:34,681 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:29:34,681 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 21:29:34,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:29:34,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1332164545, now seen corresponding path program 93 times [2020-01-16 21:29:34,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:29:34,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595203599] [2020-01-16 21:29:34,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:29:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:29:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:29:34,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595203599] [2020-01-16 21:29:34,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:29:34,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:29:34,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549799026] [2020-01-16 21:29:34,829 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:29:34,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:29:34,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:29:34,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:29:34,829 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:29:34,829 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 456 transitions. Second operand 7 states. [2020-01-16 21:29:34,830 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:29:34,830 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:29:34,830 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:29:41,298 INFO L129 PetriNetUnfolder]: 119/994 cut-off events. [2020-01-16 21:29:41,298 INFO L130 PetriNetUnfolder]: For 2505908/2506708 co-relation queries the response was YES. [2020-01-16 21:29:41,345 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 21:29:41,353 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 21:29:41,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:29:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:29:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:29:41,355 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:29:41,355 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:29:41,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:29:41,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:29:41,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:29:41,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:29:41,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:29:41,356 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:29:41,356 INFO L174 Difference]: Start difference. First operand has 710 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:29:41,370 INFO L199 Difference]: Finished difference. Result has 717 places, 456 transitions [2020-01-16 21:29:41,371 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 21:29:41,371 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 717 places, 456 transitions [2020-01-16 21:29:41,371 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 717 places, 456 transitions [2020-01-16 21:29:44,874 INFO L129 PetriNetUnfolder]: 119/994 cut-off events. [2020-01-16 21:29:44,874 INFO L130 PetriNetUnfolder]: For 2521190/2521314 co-relation queries the response was YES. [2020-01-16 21:29:44,921 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 21:29:44,935 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 717 places, 0 of 456 transitions, 120 of 61810 flow. [2020-01-16 21:29:44,936 INFO L478 AbstractCegarLoop]: Abstraction has has 716 places, 456 transitions [2020-01-16 21:29:44,936 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:29:47,937 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:29:47,937 INFO L130 PetriNetUnfolder]: For 2522218/2522432 co-relation queries the response was YES. [2020-01-16 21:29:47,937 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:29:47,937 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:29:47,937 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 21:29:47,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:29:47,937 INFO L82 PathProgramCache]: Analyzing trace with hash 15720413, now seen corresponding path program 94 times [2020-01-16 21:29:47,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:29:47,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546766346] [2020-01-16 21:29:47,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:29:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:29:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:29:48,091 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546766346] [2020-01-16 21:29:48,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:29:48,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:29:48,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491892469] [2020-01-16 21:29:48,092 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:29:48,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:29:48,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:29:48,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:29:48,092 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:29:48,093 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 716 places, 456 transitions. Second operand 7 states. [2020-01-16 21:29:48,093 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:29:48,093 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:29:48,093 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:29:54,069 INFO L129 PetriNetUnfolder]: 119/993 cut-off events. [2020-01-16 21:29:54,069 INFO L130 PetriNetUnfolder]: For 2549911/2550323 co-relation queries the response was YES. [2020-01-16 21:29:54,117 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 21:29:54,126 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:29:54,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:29:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:29:54,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:29:54,127 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:29:54,127 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:29:54,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:29:54,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:29:54,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:29:54,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:29:54,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:29:54,128 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:29:54,128 INFO L174 Difference]: Start difference. First operand has 716 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:29:54,143 INFO L199 Difference]: Finished difference. Result has 723 places, 456 transitions [2020-01-16 21:29:54,143 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 21:29:54,143 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 723 places, 456 transitions [2020-01-16 21:29:54,143 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 723 places, 456 transitions [2020-01-16 21:29:57,783 INFO L129 PetriNetUnfolder]: 119/993 cut-off events. [2020-01-16 21:29:57,783 INFO L130 PetriNetUnfolder]: For 2569555/2569769 co-relation queries the response was YES. [2020-01-16 21:29:57,838 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 21:29:57,853 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 723 places, 0 of 456 transitions, 120 of 62328 flow. [2020-01-16 21:29:57,853 INFO L478 AbstractCegarLoop]: Abstraction has has 722 places, 456 transitions [2020-01-16 21:29:57,853 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:30:01,008 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:30:01,008 INFO L130 PetriNetUnfolder]: For 2570018/2570265 co-relation queries the response was YES. [2020-01-16 21:30:01,008 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:30:01,008 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:30:01,008 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 21:30:01,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:30:01,009 INFO L82 PathProgramCache]: Analyzing trace with hash -438895205, now seen corresponding path program 95 times [2020-01-16 21:30:01,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:30:01,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533123946] [2020-01-16 21:30:01,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:30:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:30:01,144 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 21:30:01,144 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533123946] [2020-01-16 21:30:01,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:30:01,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:30:01,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479136589] [2020-01-16 21:30:01,145 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:30:01,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:30:01,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:30:01,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:30:01,145 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:30:01,146 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 722 places, 456 transitions. Second operand 7 states. [2020-01-16 21:30:01,146 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:30:01,146 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:30:01,146 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:30:07,230 INFO L129 PetriNetUnfolder]: 119/992 cut-off events. [2020-01-16 21:30:07,231 INFO L130 PetriNetUnfolder]: For 2597459/2597871 co-relation queries the response was YES. [2020-01-16 21:30:07,273 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 21:30:07,282 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:30:07,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:30:07,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:30:07,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:30:07,283 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:30:07,283 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:30:07,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:30:07,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:30:07,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:30:07,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:30:07,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:30:07,284 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:30:07,284 INFO L174 Difference]: Start difference. First operand has 722 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:30:07,299 INFO L199 Difference]: Finished difference. Result has 729 places, 456 transitions [2020-01-16 21:30:07,299 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 21:30:07,299 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 729 places, 456 transitions [2020-01-16 21:30:07,300 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 729 places, 456 transitions [2020-01-16 21:30:11,190 INFO L129 PetriNetUnfolder]: 119/992 cut-off events. [2020-01-16 21:30:11,190 INFO L130 PetriNetUnfolder]: For 2617807/2618054 co-relation queries the response was YES. [2020-01-16 21:30:11,229 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 21:30:11,243 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 729 places, 0 of 456 transitions, 120 of 62846 flow. [2020-01-16 21:30:11,243 INFO L478 AbstractCegarLoop]: Abstraction has has 728 places, 456 transitions [2020-01-16 21:30:11,243 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:30:14,604 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:30:14,604 INFO L130 PetriNetUnfolder]: For 2617807/2618054 co-relation queries the response was YES. [2020-01-16 21:30:14,604 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:30:14,604 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:30:14,604 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 21:30:14,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:30:14,605 INFO L82 PathProgramCache]: Analyzing trace with hash 2102157031, now seen corresponding path program 96 times [2020-01-16 21:30:14,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:30:14,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708762664] [2020-01-16 21:30:14,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:30:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:30:14,743 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 21:30:14,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708762664] [2020-01-16 21:30:14,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:30:14,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:30:14,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832802657] [2020-01-16 21:30:14,745 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:30:14,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:30:14,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:30:14,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:30:14,745 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:30:14,745 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 728 places, 456 transitions. Second operand 7 states. [2020-01-16 21:30:14,745 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:30:14,746 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:30:14,746 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:30:20,638 INFO L129 PetriNetUnfolder]: 119/991 cut-off events. [2020-01-16 21:30:20,638 INFO L130 PetriNetUnfolder]: For 2645502/2645914 co-relation queries the response was YES. [2020-01-16 21:30:20,683 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 21:30:20,692 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:30:20,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:30:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:30:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:30:20,693 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:30:20,693 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:30:20,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:30:20,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:30:20,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:30:20,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:30:20,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:30:20,694 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:30:20,694 INFO L174 Difference]: Start difference. First operand has 728 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:30:20,717 INFO L199 Difference]: Finished difference. Result has 735 places, 456 transitions [2020-01-16 21:30:20,717 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 21:30:20,718 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 735 places, 456 transitions [2020-01-16 21:30:20,718 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 735 places, 456 transitions [2020-01-16 21:30:24,842 INFO L129 PetriNetUnfolder]: 119/991 cut-off events. [2020-01-16 21:30:24,842 INFO L130 PetriNetUnfolder]: For 2665978/2666225 co-relation queries the response was YES. [2020-01-16 21:30:24,886 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 21:30:24,900 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 735 places, 0 of 456 transitions, 120 of 63364 flow. [2020-01-16 21:30:24,901 INFO L478 AbstractCegarLoop]: Abstraction has has 734 places, 456 transitions [2020-01-16 21:30:24,901 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:30:28,122 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:30:28,122 INFO L130 PetriNetUnfolder]: For 2665978/2666225 co-relation queries the response was YES. [2020-01-16 21:30:28,122 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:30:28,122 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:30:28,122 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 21:30:28,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:30:28,122 INFO L82 PathProgramCache]: Analyzing trace with hash 711137929, now seen corresponding path program 97 times [2020-01-16 21:30:28,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:30:28,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640462965] [2020-01-16 21:30:28,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:30:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:30:28,300 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 21:30:28,301 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640462965] [2020-01-16 21:30:28,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:30:28,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:30:28,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290584827] [2020-01-16 21:30:28,301 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:30:28,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:30:28,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:30:28,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:30:28,302 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:30:28,303 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 734 places, 456 transitions. Second operand 7 states. [2020-01-16 21:30:28,303 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:30:28,303 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:30:28,303 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:30:34,312 INFO L129 PetriNetUnfolder]: 119/990 cut-off events. [2020-01-16 21:30:34,312 INFO L130 PetriNetUnfolder]: For 2694354/2694892 co-relation queries the response was YES. [2020-01-16 21:30:34,360 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 21:30:34,369 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:30:34,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:30:34,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:30:34,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:30:34,370 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:30:34,370 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:30:34,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:30:34,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:30:34,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:30:34,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:30:34,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:30:34,371 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:30:34,371 INFO L174 Difference]: Start difference. First operand has 734 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:30:34,391 INFO L199 Difference]: Finished difference. Result has 741 places, 456 transitions [2020-01-16 21:30:34,392 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 21:30:34,392 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 741 places, 456 transitions [2020-01-16 21:30:34,392 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 741 places, 456 transitions [2020-01-16 21:30:37,969 INFO L129 PetriNetUnfolder]: 119/990 cut-off events. [2020-01-16 21:30:37,969 INFO L130 PetriNetUnfolder]: For 2714488/2714735 co-relation queries the response was YES. [2020-01-16 21:30:38,019 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 21:30:38,033 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 741 places, 0 of 456 transitions, 120 of 63882 flow. [2020-01-16 21:30:38,033 INFO L478 AbstractCegarLoop]: Abstraction has has 740 places, 456 transitions [2020-01-16 21:30:38,033 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:30:41,233 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:30:41,233 INFO L130 PetriNetUnfolder]: For 2712935/2713059 co-relation queries the response was YES. [2020-01-16 21:30:41,233 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:30:41,233 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:30:41,233 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 21:30:41,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:30:41,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1878754855, now seen corresponding path program 98 times [2020-01-16 21:30:41,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:30:41,234 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822113859] [2020-01-16 21:30:41,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:30:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:30:41,371 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 21:30:41,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822113859] [2020-01-16 21:30:41,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:30:41,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:30:41,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402548923] [2020-01-16 21:30:41,372 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:30:41,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:30:41,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:30:41,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:30:41,373 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:30:41,373 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 740 places, 456 transitions. Second operand 7 states. [2020-01-16 21:30:41,374 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:30:41,374 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:30:41,374 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:30:47,422 INFO L129 PetriNetUnfolder]: 119/989 cut-off events. [2020-01-16 21:30:47,422 INFO L130 PetriNetUnfolder]: For 2745673/2746657 co-relation queries the response was YES. [2020-01-16 21:30:47,466 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 21:30:47,475 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 21:30:47,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:30:47,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:30:47,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:30:47,476 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:30:47,476 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:30:47,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:30:47,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:30:47,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:30:47,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:30:47,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:30:47,478 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:30:47,478 INFO L174 Difference]: Start difference. First operand has 740 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:30:47,494 INFO L199 Difference]: Finished difference. Result has 747 places, 456 transitions [2020-01-16 21:30:47,495 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 21:30:47,495 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 747 places, 456 transitions [2020-01-16 21:30:47,495 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 747 places, 456 transitions [2020-01-16 21:30:51,243 INFO L129 PetriNetUnfolder]: 119/989 cut-off events. [2020-01-16 21:30:51,243 INFO L130 PetriNetUnfolder]: For 2761777/2761901 co-relation queries the response was YES. [2020-01-16 21:30:51,284 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 21:30:51,298 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 747 places, 0 of 456 transitions, 120 of 64400 flow. [2020-01-16 21:30:51,298 INFO L478 AbstractCegarLoop]: Abstraction has has 746 places, 456 transitions [2020-01-16 21:30:51,298 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:30:54,749 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:30:54,749 INFO L130 PetriNetUnfolder]: For 2762490/2762644 co-relation queries the response was YES. [2020-01-16 21:30:54,749 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:30:54,749 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:30:54,749 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 21:30:54,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:30:54,749 INFO L82 PathProgramCache]: Analyzing trace with hash 255734643, now seen corresponding path program 99 times [2020-01-16 21:30:54,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:30:54,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929072286] [2020-01-16 21:30:54,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:30:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:30:54,890 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 21:30:54,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929072286] [2020-01-16 21:30:54,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:30:54,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:30:54,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140370793] [2020-01-16 21:30:54,892 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:30:54,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:30:54,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:30:54,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:30:54,893 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:30:54,893 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 456 transitions. Second operand 7 states. [2020-01-16 21:30:54,893 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:30:54,893 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:30:54,893 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:31:01,019 INFO L129 PetriNetUnfolder]: 119/988 cut-off events. [2020-01-16 21:31:01,019 INFO L130 PetriNetUnfolder]: For 2794749/2795738 co-relation queries the response was YES. [2020-01-16 21:31:01,067 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 21:31:01,075 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:31:01,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:31:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:31:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:31:01,077 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:31:01,077 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:31:01,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:31:01,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:31:01,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:31:01,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:31:01,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:31:01,078 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:31:01,078 INFO L174 Difference]: Start difference. First operand has 746 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:31:01,095 INFO L199 Difference]: Finished difference. Result has 753 places, 456 transitions [2020-01-16 21:31:01,095 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 21:31:01,095 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 753 places, 456 transitions [2020-01-16 21:31:01,095 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 753 places, 456 transitions [2020-01-16 21:31:04,739 INFO L129 PetriNetUnfolder]: 119/988 cut-off events. [2020-01-16 21:31:04,740 INFO L130 PetriNetUnfolder]: For 2811723/2811874 co-relation queries the response was YES. [2020-01-16 21:31:04,788 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 21:31:04,802 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 753 places, 0 of 456 transitions, 120 of 64918 flow. [2020-01-16 21:31:04,803 INFO L478 AbstractCegarLoop]: Abstraction has has 752 places, 456 transitions [2020-01-16 21:31:04,803 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:31:07,835 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:31:07,835 INFO L130 PetriNetUnfolder]: For 2811723/2811874 co-relation queries the response was YES. [2020-01-16 21:31:07,835 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:31:07,835 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:31:07,835 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 21:31:07,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:31:07,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1142067553, now seen corresponding path program 100 times [2020-01-16 21:31:07,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:31:07,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62565969] [2020-01-16 21:31:07,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:31:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:31:07,973 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 21:31:07,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62565969] [2020-01-16 21:31:07,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:31:07,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:31:07,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087688357] [2020-01-16 21:31:07,974 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:31:07,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:31:07,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:31:07,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:31:07,975 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:31:07,975 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 456 transitions. Second operand 7 states. [2020-01-16 21:31:07,975 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:31:07,975 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:31:07,975 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:31:14,769 INFO L129 PetriNetUnfolder]: 119/987 cut-off events. [2020-01-16 21:31:14,769 INFO L130 PetriNetUnfolder]: For 2843666/2844459 co-relation queries the response was YES. [2020-01-16 21:31:14,812 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 21:31:14,821 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 21:31:14,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:31:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:31:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:31:14,822 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:31:14,822 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:31:14,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:31:14,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:31:14,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:31:14,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:31:14,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:31:14,823 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:31:14,823 INFO L174 Difference]: Start difference. First operand has 752 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:31:14,838 INFO L199 Difference]: Finished difference. Result has 759 places, 456 transitions [2020-01-16 21:31:14,839 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 21:31:14,839 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 759 places, 456 transitions [2020-01-16 21:31:14,839 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 759 places, 456 transitions [2020-01-16 21:31:18,691 INFO L129 PetriNetUnfolder]: 119/987 cut-off events. [2020-01-16 21:31:18,691 INFO L130 PetriNetUnfolder]: For 2861477/2861632 co-relation queries the response was YES. [2020-01-16 21:31:18,920 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 21:31:18,934 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 759 places, 0 of 456 transitions, 120 of 65436 flow. [2020-01-16 21:31:18,935 INFO L478 AbstractCegarLoop]: Abstraction has has 758 places, 456 transitions [2020-01-16 21:31:18,935 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:31:22,455 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:31:22,455 INFO L130 PetriNetUnfolder]: For 2861477/2861632 co-relation queries the response was YES. [2020-01-16 21:31:22,455 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:31:22,455 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:31:22,455 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 21:31:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:31:22,456 INFO L82 PathProgramCache]: Analyzing trace with hash -886030621, now seen corresponding path program 101 times [2020-01-16 21:31:22,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:31:22,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985974086] [2020-01-16 21:31:22,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:31:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:31:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:31:22,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985974086] [2020-01-16 21:31:22,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:31:22,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:31:22,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090033500] [2020-01-16 21:31:22,612 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:31:22,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:31:22,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:31:22,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:31:22,613 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:31:22,613 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 456 transitions. Second operand 7 states. [2020-01-16 21:31:22,613 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:31:22,613 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:31:22,614 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:31:28,703 INFO L129 PetriNetUnfolder]: 119/986 cut-off events. [2020-01-16 21:31:28,704 INFO L130 PetriNetUnfolder]: For 2893588/2894388 co-relation queries the response was YES. [2020-01-16 21:31:28,751 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 21:31:28,760 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:31:28,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:31:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:31:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:31:28,761 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:31:28,761 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:31:28,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:31:28,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:31:28,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:31:28,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:31:28,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:31:28,763 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:31:28,763 INFO L174 Difference]: Start difference. First operand has 758 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:31:28,783 INFO L199 Difference]: Finished difference. Result has 765 places, 456 transitions [2020-01-16 21:31:28,783 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 21:31:28,784 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 765 places, 456 transitions [2020-01-16 21:31:28,784 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 765 places, 456 transitions [2020-01-16 21:31:32,114 INFO L129 PetriNetUnfolder]: 119/986 cut-off events. [2020-01-16 21:31:32,114 INFO L130 PetriNetUnfolder]: For 2911515/2911670 co-relation queries the response was YES. [2020-01-16 21:31:32,159 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 21:31:32,173 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 765 places, 0 of 456 transitions, 120 of 65954 flow. [2020-01-16 21:31:32,174 INFO L478 AbstractCegarLoop]: Abstraction has has 764 places, 456 transitions [2020-01-16 21:31:32,174 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:31:35,426 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:31:35,426 INFO L130 PetriNetUnfolder]: For 2911515/2911670 co-relation queries the response was YES. [2020-01-16 21:31:35,426 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:31:35,426 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:31:35,426 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 21:31:35,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:31:35,427 INFO L82 PathProgramCache]: Analyzing trace with hash -510141499, now seen corresponding path program 102 times [2020-01-16 21:31:35,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:31:35,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157727155] [2020-01-16 21:31:35,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:31:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:31:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:31:35,566 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157727155] [2020-01-16 21:31:35,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:31:35,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:31:35,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709610803] [2020-01-16 21:31:35,566 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:31:35,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:31:35,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:31:35,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:31:35,567 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:31:35,567 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 764 places, 456 transitions. Second operand 7 states. [2020-01-16 21:31:35,567 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:31:35,567 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:31:35,567 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:31:41,845 INFO L129 PetriNetUnfolder]: 119/985 cut-off events. [2020-01-16 21:31:41,846 INFO L130 PetriNetUnfolder]: For 2943761/2944561 co-relation queries the response was YES. [2020-01-16 21:31:41,887 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 21:31:41,897 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 21:31:41,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:31:41,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:31:41,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:31:41,898 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:31:41,898 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:31:41,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:31:41,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:31:41,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:31:41,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:31:41,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:31:41,899 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:31:41,899 INFO L174 Difference]: Start difference. First operand has 764 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:31:41,914 INFO L199 Difference]: Finished difference. Result has 771 places, 456 transitions [2020-01-16 21:31:41,915 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 21:31:41,915 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 771 places, 456 transitions [2020-01-16 21:31:41,915 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 771 places, 456 transitions [2020-01-16 21:31:45,802 INFO L129 PetriNetUnfolder]: 119/985 cut-off events. [2020-01-16 21:31:45,802 INFO L130 PetriNetUnfolder]: For 2961816/2961975 co-relation queries the response was YES. [2020-01-16 21:31:45,855 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 21:31:45,870 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 771 places, 0 of 456 transitions, 120 of 66472 flow. [2020-01-16 21:31:45,870 INFO L478 AbstractCegarLoop]: Abstraction has has 770 places, 456 transitions [2020-01-16 21:31:45,870 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:31:49,339 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:31:49,339 INFO L130 PetriNetUnfolder]: For 2961113/2961263 co-relation queries the response was YES. [2020-01-16 21:31:49,339 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:31:49,339 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:31:49,339 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 21:31:49,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:31:49,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1359846279, now seen corresponding path program 103 times [2020-01-16 21:31:49,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:31:49,340 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577444099] [2020-01-16 21:31:49,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:31:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:31:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:31:49,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577444099] [2020-01-16 21:31:49,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:31:49,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:31:49,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521564868] [2020-01-16 21:31:49,486 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:31:49,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:31:49,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:31:49,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:31:49,487 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:31:49,487 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 456 transitions. Second operand 7 states. [2020-01-16 21:31:49,487 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:31:49,487 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:31:49,487 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:31:56,490 INFO L129 PetriNetUnfolder]: 119/984 cut-off events. [2020-01-16 21:31:56,491 INFO L130 PetriNetUnfolder]: For 2993496/2994296 co-relation queries the response was YES. [2020-01-16 21:31:56,542 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 21:31:56,551 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 191 selfloop transitions, 259 changer transitions [2020-01-16 21:31:56,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:31:56,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:31:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2020-01-16 21:31:56,552 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2020-01-16 21:31:56,553 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2020-01-16 21:31:56,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2020-01-16 21:31:56,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:31:56,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2020-01-16 21:31:56,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:31:56,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:31:56,553 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:31:56,554 INFO L174 Difference]: Start difference. First operand has 770 places, 456 transitions. Second operand 7 states and 312 transitions. [2020-01-16 21:31:56,569 INFO L199 Difference]: Finished difference. Result has 777 places, 456 transitions [2020-01-16 21:31:56,570 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 21:31:56,570 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 777 places, 456 transitions [2020-01-16 21:31:56,570 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 777 places, 456 transitions [2020-01-16 21:31:59,904 INFO L129 PetriNetUnfolder]: 119/984 cut-off events. [2020-01-16 21:31:59,904 INFO L130 PetriNetUnfolder]: For 3011837/3011990 co-relation queries the response was YES. [2020-01-16 21:31:59,949 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 21:31:59,964 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 777 places, 0 of 456 transitions, 120 of 66990 flow. [2020-01-16 21:31:59,964 INFO L478 AbstractCegarLoop]: Abstraction has has 776 places, 456 transitions [2020-01-16 21:31:59,964 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:32:03,295 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:32:03,295 INFO L130 PetriNetUnfolder]: For 3012654/3012848 co-relation queries the response was YES. [2020-01-16 21:32:03,295 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:32:03,296 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:32:03,296 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 21:32:03,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:32:03,296 INFO L82 PathProgramCache]: Analyzing trace with hash 277427009, now seen corresponding path program 104 times [2020-01-16 21:32:03,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:32:03,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63088439] [2020-01-16 21:32:03,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:32:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:32:03,430 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 21:32:03,430 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63088439] [2020-01-16 21:32:03,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:32:03,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:32:03,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168874266] [2020-01-16 21:32:03,431 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:32:03,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:32:03,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:32:03,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:32:03,432 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:32:03,432 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 776 places, 456 transitions. Second operand 7 states. [2020-01-16 21:32:03,432 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:32:03,432 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:32:03,432 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:32:09,772 INFO L129 PetriNetUnfolder]: 119/983 cut-off events. [2020-01-16 21:32:09,772 INFO L130 PetriNetUnfolder]: For 3043383/3044122 co-relation queries the response was YES. [2020-01-16 21:32:09,816 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 21:32:09,825 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 21:32:09,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:32:09,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:32:09,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:32:09,826 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:32:09,826 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:32:09,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:32:09,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:32:09,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:32:09,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:32:09,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:32:09,827 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:32:09,827 INFO L174 Difference]: Start difference. First operand has 776 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:32:09,843 INFO L199 Difference]: Finished difference. Result has 783 places, 456 transitions [2020-01-16 21:32:09,843 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 21:32:09,844 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 783 places, 456 transitions [2020-01-16 21:32:09,844 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 783 places, 456 transitions [2020-01-16 21:32:13,753 INFO L129 PetriNetUnfolder]: 119/983 cut-off events. [2020-01-16 21:32:13,753 INFO L130 PetriNetUnfolder]: For 3063401/3063595 co-relation queries the response was YES. [2020-01-16 21:32:13,806 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25148 conditions, 983 events. 119/983 cut-off events. For 3063401/3063595 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10966 event pairs. 1/962 useless extension candidates. Maximal degree in co-relation 24161. Up to 127 conditions per place. [2020-01-16 21:32:13,821 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 783 places, 0 of 456 transitions, 120 of 67508 flow. [2020-01-16 21:32:13,821 INFO L478 AbstractCegarLoop]: Abstraction has has 782 places, 456 transitions [2020-01-16 21:32:13,821 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 21:32:17,349 INFO L129 PetriNetUnfolder]: 119/967 cut-off events. [2020-01-16 21:32:17,349 INFO L130 PetriNetUnfolder]: For 3062422/3062558 co-relation queries the response was YES. [2020-01-16 21:32:17,349 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:32:17,349 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:32:17,349 INFO L426 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 21:32:17,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:32:17,350 INFO L82 PathProgramCache]: Analyzing trace with hash 761752811, now seen corresponding path program 105 times [2020-01-16 21:32:17,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:32:17,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024206846] [2020-01-16 21:32:17,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:32:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:32:17,469 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 21:32:17,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024206846] [2020-01-16 21:32:17,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:32:17,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 21:32:17,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694146834] [2020-01-16 21:32:17,470 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 21:32:17,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:32:17,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 21:32:17,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 21:32:17,471 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 54 [2020-01-16 21:32:17,471 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 782 places, 456 transitions. Second operand 7 states. [2020-01-16 21:32:17,471 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:32:17,471 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 54 [2020-01-16 21:32:17,471 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:32:23,826 INFO L129 PetriNetUnfolder]: 119/982 cut-off events. [2020-01-16 21:32:23,826 INFO L130 PetriNetUnfolder]: For 3094283/3095022 co-relation queries the response was YES. [2020-01-16 21:32:23,881 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25384 conditions, 982 events. 119/982 cut-off events. For 3094283/3095022 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10873 event pairs. 22/991 useless extension candidates. Maximal degree in co-relation 24389. Up to 160 conditions per place. [2020-01-16 21:32:23,891 INFO L123 encePairwiseOnDemand]: 47/54 looper letters, 190 selfloop transitions, 259 changer transitions [2020-01-16 21:32:23,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 21:32:23,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-01-16 21:32:23,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2020-01-16 21:32:23,892 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8227513227513228 [2020-01-16 21:32:23,892 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 311 transitions. [2020-01-16 21:32:23,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 311 transitions. [2020-01-16 21:32:23,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:32:23,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 311 transitions. [2020-01-16 21:32:23,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-01-16 21:32:23,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-01-16 21:32:23,893 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-01-16 21:32:23,893 INFO L174 Difference]: Start difference. First operand has 782 places, 456 transitions. Second operand 7 states and 311 transitions. [2020-01-16 21:32:23,910 INFO L199 Difference]: Finished difference. Result has 789 places, 456 transitions [2020-01-16 21:32:23,911 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=67388, PETRI_DIFFERENCE_MINUEND_PLACES=782, 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=68026, PETRI_PLACES=789, PETRI_TRANSITIONS=456} [2020-01-16 21:32:23,911 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 789 places, 456 transitions [2020-01-16 21:32:23,911 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 789 places, 456 transitions [2020-01-16 21:32:27,402 INFO L129 PetriNetUnfolder]: 119/982 cut-off events. [2020-01-16 21:32:27,402 INFO L130 PetriNetUnfolder]: For 3113664/3113805 co-relation queries the response was YES. [2020-01-16 21:32:27,450 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25198 conditions, 982 events. 119/982 cut-off events. For 3113664/3113805 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10984 event pairs. 1/964 useless extension candidates. Maximal degree in co-relation 24209. Up to 127 conditions per place. [2020-01-16 21:32:27,464 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 789 places, 0 of 456 transitions, 120 of 68026 flow. [2020-01-16 21:32:27,465 INFO L478 AbstractCegarLoop]: Abstraction has has 788 places, 456 transitions [2020-01-16 21:32:27,465 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. Received shutdown request... [2020-01-16 21:32:29,643 WARN L543 AbstractCegarLoop]: Verification canceled [2020-01-16 21:32:29,646 WARN L227 ceAbstractionStarter]: Timeout [2020-01-16 21:32:29,647 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 09:32:29 BasicIcfg [2020-01-16 21:32:29,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 21:32:29,648 INFO L168 Benchmark]: Toolchain (without parser) took 838493.90 ms. Allocated memory was 145.8 MB in the beginning and 3.3 GB in the end (delta: 3.2 GB). Free memory was 120.8 MB in the beginning and 2.6 GB in the end (delta: -2.5 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2020-01-16 21:32:29,649 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 21:32:29,649 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.65 ms. Allocated memory is still 145.8 MB. Free memory was 120.6 MB in the beginning and 119.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-01-16 21:32:29,650 INFO L168 Benchmark]: Boogie Preprocessor took 18.85 ms. Allocated memory is still 145.8 MB. Free memory was 119.0 MB in the beginning and 117.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 21:32:29,650 INFO L168 Benchmark]: RCFGBuilder took 269.68 ms. Allocated memory is still 145.8 MB. Free memory was 117.9 MB in the beginning and 106.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-01-16 21:32:29,651 INFO L168 Benchmark]: TraceAbstraction took 838166.54 ms. Allocated memory was 145.8 MB in the beginning and 3.3 GB in the end (delta: 3.2 GB). Free memory was 106.1 MB in the beginning and 2.6 GB in the end (delta: -2.5 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2020-01-16 21:32:29,652 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 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.65 ms. Allocated memory is still 145.8 MB. Free memory was 120.6 MB in the beginning and 119.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.85 ms. Allocated memory is still 145.8 MB. Free memory was 119.0 MB in the beginning and 117.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 269.68 ms. Allocated memory is still 145.8 MB. Free memory was 117.9 MB in the beginning and 106.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 838166.54 ms. Allocated memory was 145.8 MB in the beginning and 3.3 GB in the end (delta: 3.2 GB). Free memory was 106.1 MB in the beginning and 2.6 GB in the end (delta: -2.5 GB). Peak memory consumption was 3.0 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 PetriNetUnfolder was constructing finite prefix that currently has 20097 conditions, 771 events (21/770 cut-off events. For 919146/919287 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9904 event pairs. 1/853 useless extension candidates. Maximal degree in co-relation 19285. Up to 121 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 837.9s, OverallIterations: 109, TraceHistogramMax: 1, AutomataDifference: 388.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 1510 SDtfs, 1784 SDslu, 1115 SDs, 0 SdLazy, 3209 SolverSat, 583 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 747 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 634 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=788occurred in iteration=109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 243.4s AutomataMinimizationTime, 109 MinimizatonAttempts, 109 StatesRemovedByMinimization, 109 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 1744 NumberOfCodeBlocks, 1744 NumberOfCodeBlocksAsserted, 109 NumberOfCheckSat, 1635 ConstructedInterpolants, 0 QuantifiedInterpolants, 390285 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 109 InterpolantComputations, 109 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