/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_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 21:18:29,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 21:18:29,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 21:18:29,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 21:18:29,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 21:18:29,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 21:18:29,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 21:18:29,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 21:18:29,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 21:18:29,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 21:18:29,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 21:18:29,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-01-16 21:18:29,187 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 21:18:29,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 21:18:29,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 21:18:29,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 21:18:29,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 21:18:29,225 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 21:18:29,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 21:18:29,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 21:18:29,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 21:18:29,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 21:18:29,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 21:18:29,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 21:18:29,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 21:18:29,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 21:18:29,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 21:18:29,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 21:18:29,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 21:18:29,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 21:18:29,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 21:18:29,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 21:18:29,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 21:18:29,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 21:18:29,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 21:18:29,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 21:18:29,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 21:18:29,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 21:18:29,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 21:18:29,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 21:18:29,230 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-01-16 21:18:29,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 21:18:29,482 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 21:18:29,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 21:18:29,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 21:18:29,502 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 21:18:29,503 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 21:18:29,504 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl [2020-01-16 21:18:29,504 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl' [2020-01-16 21:18:29,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 21:18:29,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 21:18:29,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 21:18:29,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 21:18:29,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 21:18:29,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:29" (1/1) ... [2020-01-16 21:18:29,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:29" (1/1) ... [2020-01-16 21:18:29,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 21:18:29,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 21:18:29,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 21:18:29,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 21:18:29,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:29" (1/1) ... [2020-01-16 21:18:29,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:29" (1/1) ... [2020-01-16 21:18:29,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:29" (1/1) ... [2020-01-16 21:18:29,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:29" (1/1) ... [2020-01-16 21:18:29,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:29" (1/1) ... [2020-01-16 21:18:29,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:29" (1/1) ... [2020-01-16 21:18:29,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:29" (1/1) ... [2020-01-16 21:18:29,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 21:18:29,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 21:18:29,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 21:18:29,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 21:18:29,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:29" (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 21:18:29,671 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 21:18:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 21:18:29,671 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 21:18:29,673 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 21:18:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 21:18:29,673 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 21:18:29,674 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 21:18:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 21:18:29,675 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 21:18:29,675 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 21:18:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 21:18:29,675 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 21:18:29,676 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 21:18:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 21:18:29,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 21:18:29,677 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 21:18:29,853 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 21:18:29,853 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 21:18:29,854 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 09:18:29 BoogieIcfgContainer [2020-01-16 21:18:29,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 21:18:29,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 21:18:29,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 21:18:29,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 21:18:29,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:18:29" (1/2) ... [2020-01-16 21:18:29,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159caac5 and model type example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 09:18:29, skipping insertion in model container [2020-01-16 21:18:29,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 09:18:29" (2/2) ... [2020-01-16 21:18:29,862 INFO L109 eAbstractionObserver]: Analyzing ICFG example_4.bpl [2020-01-16 21:18:29,871 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 21:18:29,879 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 21:18:29,880 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 21:18:30,004 INFO L250 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-01-16 21:18:30,042 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 21:18:30,042 INFO L375 AbstractCegarLoop]: Hoare is false [2020-01-16 21:18:30,042 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 21:18:30,042 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 21:18:30,042 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 21:18:30,043 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 21:18:30,043 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 21:18:30,043 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 21:18:30,056 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 35 transitions [2020-01-16 21:18:30,058 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions [2020-01-16 21:18:30,101 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2020-01-16 21:18:30,101 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-01-16 21:18:30,115 INFO L76 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 47 events. 17/47 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs. 0/46 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2020-01-16 21:18:30,122 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions [2020-01-16 21:18:30,151 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2020-01-16 21:18:30,151 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-01-16 21:18:30,153 INFO L76 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 47 events. 17/47 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs. 0/46 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2020-01-16 21:18:30,157 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 216 [2020-01-16 21:18:30,158 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-01-16 21:18:30,252 INFO L206 etLargeBlockEncoding]: Checked pairs total: 66 [2020-01-16 21:18:30,253 INFO L214 etLargeBlockEncoding]: Total number of compositions: 5 [2020-01-16 21:18:30,253 INFO L162 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 201 [2020-01-16 21:18:30,270 INFO L129 PetriNetUnfolder]: 17/41 cut-off events. [2020-01-16 21:18:30,271 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-01-16 21:18:30,271 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:30,272 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:30,272 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:30,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:30,279 INFO L82 PathProgramCache]: Analyzing trace with hash 184386175, now seen corresponding path program 1 times [2020-01-16 21:18:30,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:30,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156370392] [2020-01-16 21:18:30,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:30,440 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 21:18:30,441 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156370392] [2020-01-16 21:18:30,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:30,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:30,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293783414] [2020-01-16 21:18:30,453 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:30,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:30,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:30,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:30,473 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 40 [2020-01-16 21:18:30,475 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions. Second operand 3 states. [2020-01-16 21:18:30,475 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:30,475 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 40 [2020-01-16 21:18:30,477 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:30,518 INFO L129 PetriNetUnfolder]: 14/38 cut-off events. [2020-01-16 21:18:30,518 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2020-01-16 21:18:30,521 INFO L76 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 38 events. 14/38 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 74 event pairs. 1/38 useless extension candidates. Maximal degree in co-relation 35. Up to 12 conditions per place. [2020-01-16 21:18:30,522 INFO L123 encePairwiseOnDemand]: 38/40 looper letters, 3 selfloop transitions, 2 changer transitions [2020-01-16 21:18:30,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2020-01-16 21:18:30,538 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2020-01-16 21:18:30,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2020-01-16 21:18:30,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2020-01-16 21:18:30,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:30,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2020-01-16 21:18:30,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:30,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:30,552 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:30,554 INFO L174 Difference]: Start difference. First operand has 30 places, 30 transitions. Second operand 3 states and 110 transitions. [2020-01-16 21:18:30,555 INFO L199 Difference]: Finished difference. Result has 32 places, 25 transitions [2020-01-16 21:18:30,558 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2020-01-16 21:18:30,560 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 32 places, 25 transitions [2020-01-16 21:18:30,560 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions [2020-01-16 21:18:30,572 INFO L129 PetriNetUnfolder]: 14/38 cut-off events. [2020-01-16 21:18:30,572 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2020-01-16 21:18:30,573 INFO L76 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 38 events. 14/38 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 81 event pairs. 0/37 useless extension candidates. Maximal degree in co-relation 67. Up to 12 conditions per place. [2020-01-16 21:18:30,575 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 5 of 32 places, 0 of 25 transitions, 1 of 108 flow. [2020-01-16 21:18:30,576 INFO L478 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions [2020-01-16 21:18:30,577 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:30,586 INFO L129 PetriNetUnfolder]: 14/37 cut-off events. [2020-01-16 21:18:30,587 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2020-01-16 21:18:30,587 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:30,587 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:30,587 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:30,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:30,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1049209955, now seen corresponding path program 1 times [2020-01-16 21:18:30,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:30,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095650515] [2020-01-16 21:18:30,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:30,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095650515] [2020-01-16 21:18:30,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:30,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:30,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295915883] [2020-01-16 21:18:30,636 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:30,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:30,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:30,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:30,639 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 40 [2020-01-16 21:18:30,639 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions. Second operand 3 states. [2020-01-16 21:18:30,639 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:30,639 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 40 [2020-01-16 21:18:30,639 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:30,657 INFO L129 PetriNetUnfolder]: 3/20 cut-off events. [2020-01-16 21:18:30,658 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-01-16 21:18:30,658 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 20 events. 3/20 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 6/25 useless extension candidates. Maximal degree in co-relation 22. Up to 4 conditions per place. [2020-01-16 21:18:30,659 INFO L123 encePairwiseOnDemand]: 36/40 looper letters, 1 selfloop transitions, 4 changer transitions [2020-01-16 21:18:30,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2020-01-16 21:18:30,661 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2020-01-16 21:18:30,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2020-01-16 21:18:30,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2020-01-16 21:18:30,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:30,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2020-01-16 21:18:30,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:30,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:30,667 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:30,668 INFO L174 Difference]: Start difference. First operand has 27 places, 25 transitions. Second operand 3 states and 110 transitions. [2020-01-16 21:18:30,668 INFO L199 Difference]: Finished difference. Result has 29 places, 19 transitions [2020-01-16 21:18:30,668 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2020-01-16 21:18:30,670 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 29 places, 19 transitions [2020-01-16 21:18:30,670 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions [2020-01-16 21:18:30,680 INFO L129 PetriNetUnfolder]: 3/20 cut-off events. [2020-01-16 21:18:30,680 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-01-16 21:18:30,684 INFO L76 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 20 events. 3/20 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs. 0/19 useless extension candidates. Maximal degree in co-relation 25. Up to 4 conditions per place. [2020-01-16 21:18:30,684 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 29 places, 0 of 19 transitions, 1 of 79 flow. [2020-01-16 21:18:30,685 INFO L478 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions [2020-01-16 21:18:30,685 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:30,693 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2020-01-16 21:18:30,694 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-01-16 21:18:30,696 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:30,696 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:30,696 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:30,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1312181641, now seen corresponding path program 1 times [2020-01-16 21:18:30,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:30,698 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152530420] [2020-01-16 21:18:30,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:30,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152530420] [2020-01-16 21:18:30,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:30,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:18:30,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273517454] [2020-01-16 21:18:30,728 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:18:30,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:30,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:18:30,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:18:30,729 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 40 [2020-01-16 21:18:30,730 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions. Second operand 3 states. [2020-01-16 21:18:30,730 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:30,730 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 40 [2020-01-16 21:18:30,730 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:30,739 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2020-01-16 21:18:30,739 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2020-01-16 21:18:30,739 INFO L76 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 14 events. 0/14 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs. 2/15 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2020-01-16 21:18:30,739 INFO L123 encePairwiseOnDemand]: 37/40 looper letters, 1 selfloop transitions, 3 changer transitions [2020-01-16 21:18:30,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:18:30,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:18:30,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2020-01-16 21:18:30,742 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9083333333333333 [2020-01-16 21:18:30,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 109 transitions. [2020-01-16 21:18:30,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 109 transitions. [2020-01-16 21:18:30,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:30,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 109 transitions. [2020-01-16 21:18:30,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:18:30,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:18:30,745 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:18:30,745 INFO L174 Difference]: Start difference. First operand has 28 places, 19 transitions. Second operand 3 states and 109 transitions. [2020-01-16 21:18:30,746 INFO L199 Difference]: Finished difference. Result has 30 places, 14 transitions [2020-01-16 21:18:30,746 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=30, PETRI_TRANSITIONS=14} [2020-01-16 21:18:30,746 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 30 places, 14 transitions [2020-01-16 21:18:30,746 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 30 places, 14 transitions [2020-01-16 21:18:30,750 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2020-01-16 21:18:30,750 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-01-16 21:18:30,751 INFO L76 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 14 events. 0/14 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs. 0/13 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2020-01-16 21:18:30,751 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 30 places, 0 of 14 transitions, 1 of 55 flow. [2020-01-16 21:18:30,751 INFO L478 AbstractCegarLoop]: Abstraction has has 29 places, 14 transitions [2020-01-16 21:18:30,751 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:18:30,755 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-01-16 21:18:30,755 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-01-16 21:18:30,755 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:30,755 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:30,755 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:30,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:30,756 INFO L82 PathProgramCache]: Analyzing trace with hash 2065265875, now seen corresponding path program 1 times [2020-01-16 21:18:30,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:30,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196810022] [2020-01-16 21:18:30,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:31,031 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 21:18:31,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196810022] [2020-01-16 21:18:31,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:31,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:31,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197541826] [2020-01-16 21:18:31,033 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:31,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:31,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:31,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:31,035 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:31,035 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 14 transitions. Second operand 6 states. [2020-01-16 21:18:31,035 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:31,036 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:31,036 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:31,157 INFO L129 PetriNetUnfolder]: 18/64 cut-off events. [2020-01-16 21:18:31,158 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-01-16 21:18:31,158 INFO L76 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 64 events. 18/64 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 210 event pairs. 0/55 useless extension candidates. Maximal degree in co-relation 98. Up to 17 conditions per place. [2020-01-16 21:18:31,159 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 10 selfloop transitions, 8 changer transitions [2020-01-16 21:18:31,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:31,167 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:31,168 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:31,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:31,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:31,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:31,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:31,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:31,177 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:31,178 INFO L174 Difference]: Start difference. First operand has 29 places, 14 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:31,181 INFO L199 Difference]: Finished difference. Result has 38 places, 20 transitions [2020-01-16 21:18:31,182 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2020-01-16 21:18:31,182 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 38 places, 20 transitions [2020-01-16 21:18:31,182 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 38 places, 20 transitions [2020-01-16 21:18:31,194 INFO L129 PetriNetUnfolder]: 3/34 cut-off events. [2020-01-16 21:18:31,194 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2020-01-16 21:18:31,198 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 34 events. 3/34 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs. 0/30 useless extension candidates. Maximal degree in co-relation 52. Up to 5 conditions per place. [2020-01-16 21:18:31,199 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 38 places, 0 of 20 transitions, 0 of 100 flow. [2020-01-16 21:18:31,199 INFO L478 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions [2020-01-16 21:18:31,199 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:31,209 INFO L129 PetriNetUnfolder]: 3/31 cut-off events. [2020-01-16 21:18:31,210 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2020-01-16 21:18:31,210 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:31,210 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:31,210 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:31,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:31,211 INFO L82 PathProgramCache]: Analyzing trace with hash 746127439, now seen corresponding path program 2 times [2020-01-16 21:18:31,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:31,211 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713429221] [2020-01-16 21:18:31,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:31,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713429221] [2020-01-16 21:18:31,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:31,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:31,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077709395] [2020-01-16 21:18:31,398 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:31,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:31,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:31,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:31,400 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:31,400 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions. Second operand 6 states. [2020-01-16 21:18:31,401 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:31,401 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:31,401 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:31,521 INFO L129 PetriNetUnfolder]: 19/97 cut-off events. [2020-01-16 21:18:31,521 INFO L130 PetriNetUnfolder]: For 131/136 co-relation queries the response was YES. [2020-01-16 21:18:31,522 INFO L76 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 97 events. 19/97 cut-off events. For 131/136 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 441 event pairs. 1/91 useless extension candidates. Maximal degree in co-relation 207. Up to 20 conditions per place. [2020-01-16 21:18:31,523 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 10 selfloop transitions, 15 changer transitions [2020-01-16 21:18:31,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:31,525 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:31,525 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:31,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:31,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:31,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:31,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:31,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:31,529 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:31,529 INFO L174 Difference]: Start difference. First operand has 38 places, 20 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:31,530 INFO L199 Difference]: Finished difference. Result has 47 places, 28 transitions [2020-01-16 21:18:31,530 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2020-01-16 21:18:31,531 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 47 places, 28 transitions [2020-01-16 21:18:31,531 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 47 places, 28 transitions [2020-01-16 21:18:31,544 INFO L129 PetriNetUnfolder]: 8/73 cut-off events. [2020-01-16 21:18:31,545 INFO L130 PetriNetUnfolder]: For 169/171 co-relation queries the response was YES. [2020-01-16 21:18:31,546 INFO L76 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 73 events. 8/73 cut-off events. For 169/171 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 318 event pairs. 0/67 useless extension candidates. Maximal degree in co-relation 149. Up to 12 conditions per place. [2020-01-16 21:18:31,546 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 47 places, 0 of 28 transitions, 0 of 204 flow. [2020-01-16 21:18:31,547 INFO L478 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions [2020-01-16 21:18:31,547 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:31,565 INFO L129 PetriNetUnfolder]: 8/66 cut-off events. [2020-01-16 21:18:31,565 INFO L130 PetriNetUnfolder]: For 169/171 co-relation queries the response was YES. [2020-01-16 21:18:31,565 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:31,566 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:31,566 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:31,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:31,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1363096493, now seen corresponding path program 3 times [2020-01-16 21:18:31,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:31,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598641908] [2020-01-16 21:18:31,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:31,716 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598641908] [2020-01-16 21:18:31,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:31,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:31,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398922204] [2020-01-16 21:18:31,718 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:31,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:31,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:31,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:31,719 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:31,719 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions. Second operand 6 states. [2020-01-16 21:18:31,719 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:31,720 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:31,720 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:31,833 INFO L129 PetriNetUnfolder]: 20/134 cut-off events. [2020-01-16 21:18:31,833 INFO L130 PetriNetUnfolder]: For 429/439 co-relation queries the response was YES. [2020-01-16 21:18:31,835 INFO L76 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 134 events. 20/134 cut-off events. For 429/439 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 776 event pairs. 1/129 useless extension candidates. Maximal degree in co-relation 334. Up to 25 conditions per place. [2020-01-16 21:18:31,835 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 12 selfloop transitions, 21 changer transitions [2020-01-16 21:18:31,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:31,837 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:31,838 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:31,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:31,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:31,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:31,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:31,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:31,841 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:31,841 INFO L174 Difference]: Start difference. First operand has 47 places, 28 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:31,841 INFO L199 Difference]: Finished difference. Result has 56 places, 37 transitions [2020-01-16 21:18:31,842 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=56, PETRI_TRANSITIONS=37} [2020-01-16 21:18:31,842 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 56 places, 37 transitions [2020-01-16 21:18:31,842 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 56 places, 37 transitions [2020-01-16 21:18:31,862 INFO L129 PetriNetUnfolder]: 13/115 cut-off events. [2020-01-16 21:18:31,862 INFO L130 PetriNetUnfolder]: For 569/575 co-relation queries the response was YES. [2020-01-16 21:18:31,863 INFO L76 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 115 events. 13/115 cut-off events. For 569/575 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 665 event pairs. 0/108 useless extension candidates. Maximal degree in co-relation 281. Up to 17 conditions per place. [2020-01-16 21:18:31,864 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 56 places, 0 of 37 transitions, 14 of 372 flow. [2020-01-16 21:18:31,865 INFO L478 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions [2020-01-16 21:18:31,865 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:31,882 INFO L129 PetriNetUnfolder]: 13/104 cut-off events. [2020-01-16 21:18:31,882 INFO L130 PetriNetUnfolder]: For 569/575 co-relation queries the response was YES. [2020-01-16 21:18:31,882 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:31,883 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:31,883 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:31,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:31,883 INFO L82 PathProgramCache]: Analyzing trace with hash 115010229, now seen corresponding path program 4 times [2020-01-16 21:18:31,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:31,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015979713] [2020-01-16 21:18:31,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:32,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015979713] [2020-01-16 21:18:32,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:32,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:32,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236504904] [2020-01-16 21:18:32,013 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:32,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:32,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:32,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:32,014 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:32,015 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions. Second operand 6 states. [2020-01-16 21:18:32,015 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:32,015 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:32,015 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:32,098 INFO L129 PetriNetUnfolder]: 20/135 cut-off events. [2020-01-16 21:18:32,098 INFO L130 PetriNetUnfolder]: For 824/844 co-relation queries the response was YES. [2020-01-16 21:18:32,100 INFO L76 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 135 events. 20/135 cut-off events. For 824/844 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 773 event pairs. 1/132 useless extension candidates. Maximal degree in co-relation 387. Up to 32 conditions per place. [2020-01-16 21:18:32,100 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 17 selfloop transitions, 23 changer transitions [2020-01-16 21:18:32,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:32,102 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:32,102 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:32,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:32,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:32,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:32,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:32,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:32,104 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:32,105 INFO L174 Difference]: Start difference. First operand has 55 places, 37 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:32,105 INFO L199 Difference]: Finished difference. Result has 64 places, 41 transitions [2020-01-16 21:18:32,106 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=494, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2020-01-16 21:18:32,106 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 64 places, 41 transitions [2020-01-16 21:18:32,106 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 41 transitions [2020-01-16 21:18:32,133 INFO L129 PetriNetUnfolder]: 14/122 cut-off events. [2020-01-16 21:18:32,134 INFO L130 PetriNetUnfolder]: For 1056/1068 co-relation queries the response was YES. [2020-01-16 21:18:32,135 INFO L76 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 122 events. 14/122 cut-off events. For 1056/1068 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 726 event pairs. 0/117 useless extension candidates. Maximal degree in co-relation 336. Up to 19 conditions per place. [2020-01-16 21:18:32,136 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 64 places, 0 of 41 transitions, 15 of 494 flow. [2020-01-16 21:18:32,137 INFO L478 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions [2020-01-16 21:18:32,137 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:32,161 INFO L129 PetriNetUnfolder]: 14/111 cut-off events. [2020-01-16 21:18:32,161 INFO L130 PetriNetUnfolder]: For 1056/1068 co-relation queries the response was YES. [2020-01-16 21:18:32,161 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:32,161 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:32,162 INFO L426 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:32,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:32,162 INFO L82 PathProgramCache]: Analyzing trace with hash 207473, now seen corresponding path program 5 times [2020-01-16 21:18:32,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:32,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676964373] [2020-01-16 21:18:32,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:32,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676964373] [2020-01-16 21:18:32,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:32,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:32,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099557793] [2020-01-16 21:18:32,304 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:32,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:32,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:32,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:32,305 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:32,305 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions. Second operand 6 states. [2020-01-16 21:18:32,306 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:32,306 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:32,306 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:32,434 INFO L129 PetriNetUnfolder]: 20/137 cut-off events. [2020-01-16 21:18:32,435 INFO L130 PetriNetUnfolder]: For 1330/1366 co-relation queries the response was YES. [2020-01-16 21:18:32,436 INFO L76 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 137 events. 20/137 cut-off events. For 1330/1366 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 797 event pairs. 1/136 useless extension candidates. Maximal degree in co-relation 435. Up to 31 conditions per place. [2020-01-16 21:18:32,437 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 21 selfloop transitions, 25 changer transitions [2020-01-16 21:18:32,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:32,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:32,439 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:32,439 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:32,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:32,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:32,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:32,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:32,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:32,441 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:32,441 INFO L174 Difference]: Start difference. First operand has 63 places, 41 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:32,442 INFO L199 Difference]: Finished difference. Result has 72 places, 46 transitions [2020-01-16 21:18:32,442 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=651, PETRI_PLACES=72, PETRI_TRANSITIONS=46} [2020-01-16 21:18:32,443 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 72 places, 46 transitions [2020-01-16 21:18:32,443 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 72 places, 46 transitions [2020-01-16 21:18:32,466 INFO L129 PetriNetUnfolder]: 14/121 cut-off events. [2020-01-16 21:18:32,466 INFO L130 PetriNetUnfolder]: For 1691/1717 co-relation queries the response was YES. [2020-01-16 21:18:32,467 INFO L76 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 121 events. 14/121 cut-off events. For 1691/1717 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 696 event pairs. 0/120 useless extension candidates. Maximal degree in co-relation 442. Up to 19 conditions per place. [2020-01-16 21:18:32,468 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 72 places, 0 of 46 transitions, 15 of 651 flow. [2020-01-16 21:18:32,469 INFO L478 AbstractCegarLoop]: Abstraction has has 71 places, 46 transitions [2020-01-16 21:18:32,469 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:32,490 INFO L129 PetriNetUnfolder]: 14/111 cut-off events. [2020-01-16 21:18:32,490 INFO L130 PetriNetUnfolder]: For 1691/1717 co-relation queries the response was YES. [2020-01-16 21:18:32,490 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:32,490 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:32,491 INFO L426 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:32,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:32,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1730472275, now seen corresponding path program 6 times [2020-01-16 21:18:32,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:32,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587465052] [2020-01-16 21:18:32,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:32,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:32,652 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587465052] [2020-01-16 21:18:32,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:32,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:32,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973050210] [2020-01-16 21:18:32,653 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:32,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:32,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:32,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:32,657 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:32,657 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 46 transitions. Second operand 6 states. [2020-01-16 21:18:32,657 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:32,657 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:32,657 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:32,758 INFO L129 PetriNetUnfolder]: 20/136 cut-off events. [2020-01-16 21:18:32,759 INFO L130 PetriNetUnfolder]: For 2011/2095 co-relation queries the response was YES. [2020-01-16 21:18:32,760 INFO L76 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 136 events. 20/136 cut-off events. For 2011/2095 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 790 event pairs. 5/139 useless extension candidates. Maximal degree in co-relation 550. Up to 31 conditions per place. [2020-01-16 21:18:32,761 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 22 selfloop transitions, 25 changer transitions [2020-01-16 21:18:32,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:32,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:32,763 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:32,763 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:32,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:32,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:32,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:32,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:32,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:32,765 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:32,765 INFO L174 Difference]: Start difference. First operand has 71 places, 46 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:32,767 INFO L199 Difference]: Finished difference. Result has 79 places, 48 transitions [2020-01-16 21:18:32,767 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=745, PETRI_PLACES=79, PETRI_TRANSITIONS=48} [2020-01-16 21:18:32,767 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 79 places, 48 transitions [2020-01-16 21:18:32,768 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 48 transitions [2020-01-16 21:18:32,805 INFO L129 PetriNetUnfolder]: 14/120 cut-off events. [2020-01-16 21:18:32,805 INFO L130 PetriNetUnfolder]: For 2219/2245 co-relation queries the response was YES. [2020-01-16 21:18:32,806 INFO L76 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 120 events. 14/120 cut-off events. For 2219/2245 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 693 event pairs. 0/119 useless extension candidates. Maximal degree in co-relation 492. Up to 19 conditions per place. [2020-01-16 21:18:32,809 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 79 places, 0 of 48 transitions, 15 of 745 flow. [2020-01-16 21:18:32,809 INFO L478 AbstractCegarLoop]: Abstraction has has 78 places, 48 transitions [2020-01-16 21:18:32,809 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:32,839 INFO L129 PetriNetUnfolder]: 14/111 cut-off events. [2020-01-16 21:18:32,840 INFO L130 PetriNetUnfolder]: For 2197/2219 co-relation queries the response was YES. [2020-01-16 21:18:32,840 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:32,840 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:32,840 INFO L426 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:32,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:32,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1003129443, now seen corresponding path program 7 times [2020-01-16 21:18:32,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:32,841 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446344015] [2020-01-16 21:18:32,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:32,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446344015] [2020-01-16 21:18:32,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:33,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:33,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997321675] [2020-01-16 21:18:33,000 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:33,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:33,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:33,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:33,001 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:33,001 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 48 transitions. Second operand 6 states. [2020-01-16 21:18:33,001 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:33,002 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:33,002 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:33,126 INFO L129 PetriNetUnfolder]: 21/149 cut-off events. [2020-01-16 21:18:33,127 INFO L130 PetriNetUnfolder]: For 2993/3131 co-relation queries the response was YES. [2020-01-16 21:18:33,128 INFO L76 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 149 events. 21/149 cut-off events. For 2993/3131 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 920 event pairs. 8/155 useless extension candidates. Maximal degree in co-relation 676. Up to 31 conditions per place. [2020-01-16 21:18:33,129 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 23 selfloop transitions, 29 changer transitions [2020-01-16 21:18:33,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:33,131 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:33,131 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:33,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:33,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:33,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:33,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:33,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:33,134 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:33,134 INFO L174 Difference]: Start difference. First operand has 78 places, 48 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:33,136 INFO L199 Difference]: Finished difference. Result has 87 places, 53 transitions [2020-01-16 21:18:33,136 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=938, PETRI_PLACES=87, PETRI_TRANSITIONS=53} [2020-01-16 21:18:33,137 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 87 places, 53 transitions [2020-01-16 21:18:33,137 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 53 transitions [2020-01-16 21:18:33,170 INFO L129 PetriNetUnfolder]: 16/134 cut-off events. [2020-01-16 21:18:33,170 INFO L130 PetriNetUnfolder]: For 3131/3153 co-relation queries the response was YES. [2020-01-16 21:18:33,172 INFO L76 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 134 events. 16/134 cut-off events. For 3131/3153 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 822 event pairs. 2/132 useless extension candidates. Maximal degree in co-relation 623. Up to 21 conditions per place. [2020-01-16 21:18:33,174 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 87 places, 0 of 53 transitions, 17 of 938 flow. [2020-01-16 21:18:33,175 INFO L478 AbstractCegarLoop]: Abstraction has has 86 places, 53 transitions [2020-01-16 21:18:33,175 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:33,213 INFO L129 PetriNetUnfolder]: 16/124 cut-off events. [2020-01-16 21:18:33,214 INFO L130 PetriNetUnfolder]: For 3796/3918 co-relation queries the response was YES. [2020-01-16 21:18:33,214 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:33,214 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:33,214 INFO L426 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:33,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:33,215 INFO L82 PathProgramCache]: Analyzing trace with hash -621961871, now seen corresponding path program 8 times [2020-01-16 21:18:33,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:33,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40866158] [2020-01-16 21:18:33,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:33,368 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40866158] [2020-01-16 21:18:33,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:33,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:33,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043469376] [2020-01-16 21:18:33,371 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:33,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:33,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:33,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:33,372 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:33,373 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 53 transitions. Second operand 6 states. [2020-01-16 21:18:33,373 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:33,373 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:33,373 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:33,504 INFO L129 PetriNetUnfolder]: 22/172 cut-off events. [2020-01-16 21:18:33,504 INFO L130 PetriNetUnfolder]: For 4831/4999 co-relation queries the response was YES. [2020-01-16 21:18:33,507 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 172 events. 22/172 cut-off events. For 4831/4999 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1144 event pairs. 5/173 useless extension candidates. Maximal degree in co-relation 853. Up to 34 conditions per place. [2020-01-16 21:18:33,508 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 32 selfloop transitions, 39 changer transitions [2020-01-16 21:18:33,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:33,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:33,509 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:33,509 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:33,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:33,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:33,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:33,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:33,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:33,512 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:33,512 INFO L174 Difference]: Start difference. First operand has 86 places, 53 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:33,513 INFO L199 Difference]: Finished difference. Result has 95 places, 64 transitions [2020-01-16 21:18:33,513 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1324, PETRI_PLACES=95, PETRI_TRANSITIONS=64} [2020-01-16 21:18:33,513 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 95 places, 64 transitions [2020-01-16 21:18:33,514 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 64 transitions [2020-01-16 21:18:33,578 INFO L129 PetriNetUnfolder]: 20/168 cut-off events. [2020-01-16 21:18:33,578 INFO L130 PetriNetUnfolder]: For 5494/5553 co-relation queries the response was YES. [2020-01-16 21:18:33,580 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 168 events. 20/168 cut-off events. For 5494/5553 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1138 event pairs. 1/164 useless extension candidates. Maximal degree in co-relation 849. Up to 27 conditions per place. [2020-01-16 21:18:33,581 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 95 places, 0 of 64 transitions, 21 of 1324 flow. [2020-01-16 21:18:33,581 INFO L478 AbstractCegarLoop]: Abstraction has has 94 places, 64 transitions [2020-01-16 21:18:33,581 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:33,619 INFO L129 PetriNetUnfolder]: 20/155 cut-off events. [2020-01-16 21:18:33,619 INFO L130 PetriNetUnfolder]: For 5544/5626 co-relation queries the response was YES. [2020-01-16 21:18:33,619 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:33,619 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:33,620 INFO L426 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:33,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:33,620 INFO L82 PathProgramCache]: Analyzing trace with hash 667459879, now seen corresponding path program 9 times [2020-01-16 21:18:33,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:33,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374234972] [2020-01-16 21:18:33,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:33,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374234972] [2020-01-16 21:18:33,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:33,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:33,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128899757] [2020-01-16 21:18:33,739 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:33,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:33,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:33,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:33,740 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:33,740 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 64 transitions. Second operand 6 states. [2020-01-16 21:18:33,741 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:33,741 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:33,741 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:33,865 INFO L129 PetriNetUnfolder]: 22/171 cut-off events. [2020-01-16 21:18:33,865 INFO L130 PetriNetUnfolder]: For 6063/6228 co-relation queries the response was YES. [2020-01-16 21:18:33,868 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 171 events. 22/171 cut-off events. For 6063/6228 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1134 event pairs. 5/172 useless extension candidates. Maximal degree in co-relation 928. Up to 34 conditions per place. [2020-01-16 21:18:33,869 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 31 selfloop transitions, 40 changer transitions [2020-01-16 21:18:33,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:33,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:33,871 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:33,871 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:33,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:33,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:33,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:33,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:33,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:33,873 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:33,873 INFO L174 Difference]: Start difference. First operand has 94 places, 64 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:33,874 INFO L199 Difference]: Finished difference. Result has 101 places, 67 transitions [2020-01-16 21:18:33,874 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1478, PETRI_PLACES=101, PETRI_TRANSITIONS=67} [2020-01-16 21:18:33,875 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 101 places, 67 transitions [2020-01-16 21:18:33,875 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 101 places, 67 transitions [2020-01-16 21:18:33,922 INFO L129 PetriNetUnfolder]: 20/167 cut-off events. [2020-01-16 21:18:33,923 INFO L130 PetriNetUnfolder]: For 6524/6606 co-relation queries the response was YES. [2020-01-16 21:18:33,925 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 167 events. 20/167 cut-off events. For 6524/6606 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1117 event pairs. 1/161 useless extension candidates. Maximal degree in co-relation 895. Up to 27 conditions per place. [2020-01-16 21:18:33,926 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 101 places, 0 of 67 transitions, 21 of 1478 flow. [2020-01-16 21:18:33,926 INFO L478 AbstractCegarLoop]: Abstraction has has 100 places, 67 transitions [2020-01-16 21:18:33,927 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:33,967 INFO L129 PetriNetUnfolder]: 20/155 cut-off events. [2020-01-16 21:18:33,967 INFO L130 PetriNetUnfolder]: For 6524/6606 co-relation queries the response was YES. [2020-01-16 21:18:33,967 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:33,967 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:33,968 INFO L426 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:33,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:33,968 INFO L82 PathProgramCache]: Analyzing trace with hash 669049165, now seen corresponding path program 10 times [2020-01-16 21:18:33,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:33,968 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901685133] [2020-01-16 21:18:33,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:34,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901685133] [2020-01-16 21:18:34,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:34,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:34,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759784208] [2020-01-16 21:18:34,106 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:34,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:34,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:34,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:34,108 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:34,108 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 67 transitions. Second operand 6 states. [2020-01-16 21:18:34,108 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:34,108 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:34,109 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:34,296 INFO L129 PetriNetUnfolder]: 22/170 cut-off events. [2020-01-16 21:18:34,296 INFO L130 PetriNetUnfolder]: For 7121/7286 co-relation queries the response was YES. [2020-01-16 21:18:34,299 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 170 events. 22/170 cut-off events. For 7121/7286 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1125 event pairs. 5/171 useless extension candidates. Maximal degree in co-relation 968. Up to 34 conditions per place. [2020-01-16 21:18:34,311 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 30 selfloop transitions, 43 changer transitions [2020-01-16 21:18:34,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:34,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:34,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:34,313 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:34,313 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:34,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:34,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:34,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:34,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:34,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:34,315 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:34,315 INFO L174 Difference]: Start difference. First operand has 100 places, 67 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:34,317 INFO L199 Difference]: Finished difference. Result has 109 places, 75 transitions [2020-01-16 21:18:34,317 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1807, PETRI_PLACES=109, PETRI_TRANSITIONS=75} [2020-01-16 21:18:34,317 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 109 places, 75 transitions [2020-01-16 21:18:34,317 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 109 places, 75 transitions [2020-01-16 21:18:34,366 INFO L129 PetriNetUnfolder]: 20/166 cut-off events. [2020-01-16 21:18:34,366 INFO L130 PetriNetUnfolder]: For 8524/8681 co-relation queries the response was YES. [2020-01-16 21:18:34,369 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 166 events. 20/166 cut-off events. For 8524/8681 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1119 event pairs. 4/165 useless extension candidates. Maximal degree in co-relation 950. Up to 27 conditions per place. [2020-01-16 21:18:34,370 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 109 places, 0 of 75 transitions, 21 of 1807 flow. [2020-01-16 21:18:34,371 INFO L478 AbstractCegarLoop]: Abstraction has has 108 places, 75 transitions [2020-01-16 21:18:34,371 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:34,416 INFO L129 PetriNetUnfolder]: 20/155 cut-off events. [2020-01-16 21:18:34,416 INFO L130 PetriNetUnfolder]: For 7791/7850 co-relation queries the response was YES. [2020-01-16 21:18:34,416 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:34,417 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:34,417 INFO L426 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:34,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:34,417 INFO L82 PathProgramCache]: Analyzing trace with hash -982353425, now seen corresponding path program 11 times [2020-01-16 21:18:34,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:34,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841366999] [2020-01-16 21:18:34,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:34,524 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841366999] [2020-01-16 21:18:34,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:34,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:34,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972826279] [2020-01-16 21:18:34,525 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:34,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:34,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:34,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:34,526 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:34,527 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 75 transitions. Second operand 6 states. [2020-01-16 21:18:34,527 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:34,527 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:34,527 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:34,688 INFO L129 PetriNetUnfolder]: 22/170 cut-off events. [2020-01-16 21:18:34,689 INFO L130 PetriNetUnfolder]: For 9284/9610 co-relation queries the response was YES. [2020-01-16 21:18:34,691 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 170 events. 22/170 cut-off events. For 9284/9610 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1130 event pairs. 5/170 useless extension candidates. Maximal degree in co-relation 1025. Up to 32 conditions per place. [2020-01-16 21:18:34,692 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 24 selfloop transitions, 47 changer transitions [2020-01-16 21:18:34,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:34,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:34,694 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:34,694 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:34,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:34,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:34,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:34,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:34,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:34,696 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:34,697 INFO L174 Difference]: Start difference. First operand has 108 places, 75 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:34,698 INFO L199 Difference]: Finished difference. Result has 115 places, 76 transitions [2020-01-16 21:18:34,698 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1950, PETRI_PLACES=115, PETRI_TRANSITIONS=76} [2020-01-16 21:18:34,699 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 115 places, 76 transitions [2020-01-16 21:18:34,699 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 115 places, 76 transitions [2020-01-16 21:18:34,761 INFO L129 PetriNetUnfolder]: 20/165 cut-off events. [2020-01-16 21:18:34,761 INFO L130 PetriNetUnfolder]: For 9110/9169 co-relation queries the response was YES. [2020-01-16 21:18:34,765 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 165 events. 20/165 cut-off events. For 9110/9169 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1106 event pairs. 1/161 useless extension candidates. Maximal degree in co-relation 982. Up to 27 conditions per place. [2020-01-16 21:18:34,767 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 115 places, 0 of 76 transitions, 21 of 1950 flow. [2020-01-16 21:18:34,767 INFO L478 AbstractCegarLoop]: Abstraction has has 114 places, 76 transitions [2020-01-16 21:18:34,768 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:34,831 INFO L129 PetriNetUnfolder]: 20/155 cut-off events. [2020-01-16 21:18:34,831 INFO L130 PetriNetUnfolder]: For 9110/9169 co-relation queries the response was YES. [2020-01-16 21:18:34,831 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:34,832 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:34,832 INFO L426 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:34,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:34,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1712604719, now seen corresponding path program 12 times [2020-01-16 21:18:34,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:34,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195686684] [2020-01-16 21:18:34,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:34,971 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195686684] [2020-01-16 21:18:34,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:34,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:34,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933891045] [2020-01-16 21:18:34,972 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:34,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:34,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:34,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:34,974 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:34,974 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 76 transitions. Second operand 6 states. [2020-01-16 21:18:34,974 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:34,974 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:34,974 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:35,138 INFO L129 PetriNetUnfolder]: 22/168 cut-off events. [2020-01-16 21:18:35,138 INFO L130 PetriNetUnfolder]: For 10754/11076 co-relation queries the response was YES. [2020-01-16 21:18:35,141 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 168 events. 22/168 cut-off events. For 10754/11076 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1115 event pairs. 15/180 useless extension candidates. Maximal degree in co-relation 1063. Up to 31 conditions per place. [2020-01-16 21:18:35,143 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 31 selfloop transitions, 44 changer transitions [2020-01-16 21:18:35,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:35,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:35,144 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:35,145 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:35,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:35,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:35,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:35,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:35,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:35,147 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:35,147 INFO L174 Difference]: Start difference. First operand has 114 places, 76 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:35,149 INFO L199 Difference]: Finished difference. Result has 121 places, 79 transitions [2020-01-16 21:18:35,149 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2137, PETRI_PLACES=121, PETRI_TRANSITIONS=79} [2020-01-16 21:18:35,149 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 121 places, 79 transitions [2020-01-16 21:18:35,149 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 121 places, 79 transitions [2020-01-16 21:18:35,205 INFO L129 PetriNetUnfolder]: 20/164 cut-off events. [2020-01-16 21:18:35,206 INFO L130 PetriNetUnfolder]: For 10426/10487 co-relation queries the response was YES. [2020-01-16 21:18:35,209 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 164 events. 20/164 cut-off events. For 10426/10487 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1099 event pairs. 1/161 useless extension candidates. Maximal degree in co-relation 1034. Up to 27 conditions per place. [2020-01-16 21:18:35,210 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 121 places, 0 of 79 transitions, 21 of 2137 flow. [2020-01-16 21:18:35,210 INFO L478 AbstractCegarLoop]: Abstraction has has 120 places, 79 transitions [2020-01-16 21:18:35,210 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:35,265 INFO L129 PetriNetUnfolder]: 20/155 cut-off events. [2020-01-16 21:18:35,265 INFO L130 PetriNetUnfolder]: For 10426/10487 co-relation queries the response was YES. [2020-01-16 21:18:35,265 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:35,266 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:35,266 INFO L426 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:35,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:35,266 INFO L82 PathProgramCache]: Analyzing trace with hash 547696437, now seen corresponding path program 13 times [2020-01-16 21:18:35,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:35,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233664939] [2020-01-16 21:18:35,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:35,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233664939] [2020-01-16 21:18:35,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:35,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:35,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658185871] [2020-01-16 21:18:35,374 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:35,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:35,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:35,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:35,375 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:35,376 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 79 transitions. Second operand 6 states. [2020-01-16 21:18:35,376 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:35,376 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:35,376 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:35,543 INFO L129 PetriNetUnfolder]: 22/173 cut-off events. [2020-01-16 21:18:35,543 INFO L130 PetriNetUnfolder]: For 12003/12229 co-relation queries the response was YES. [2020-01-16 21:18:35,546 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1379 conditions, 173 events. 22/173 cut-off events. For 12003/12229 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1164 event pairs. 13/182 useless extension candidates. Maximal degree in co-relation 1156. Up to 31 conditions per place. [2020-01-16 21:18:35,548 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 31 selfloop transitions, 46 changer transitions [2020-01-16 21:18:35,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:35,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:35,550 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:35,550 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:35,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:35,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:35,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:35,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:35,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:35,553 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:35,554 INFO L174 Difference]: Start difference. First operand has 120 places, 79 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:35,556 INFO L199 Difference]: Finished difference. Result has 128 places, 82 transitions [2020-01-16 21:18:35,556 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2352, PETRI_PLACES=128, PETRI_TRANSITIONS=82} [2020-01-16 21:18:35,557 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 128 places, 82 transitions [2020-01-16 21:18:35,557 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 128 places, 82 transitions [2020-01-16 21:18:35,642 INFO L129 PetriNetUnfolder]: 21/171 cut-off events. [2020-01-16 21:18:35,642 INFO L130 PetriNetUnfolder]: For 12419/12477 co-relation queries the response was YES. [2020-01-16 21:18:35,647 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1359 conditions, 171 events. 21/171 cut-off events. For 12419/12477 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1171 event pairs. 0/166 useless extension candidates. Maximal degree in co-relation 1130. Up to 28 conditions per place. [2020-01-16 21:18:35,650 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 128 places, 0 of 82 transitions, 22 of 2352 flow. [2020-01-16 21:18:35,650 INFO L478 AbstractCegarLoop]: Abstraction has has 127 places, 82 transitions [2020-01-16 21:18:35,650 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:35,731 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:18:35,731 INFO L130 PetriNetUnfolder]: For 11927/11940 co-relation queries the response was YES. [2020-01-16 21:18:35,731 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:35,731 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:35,731 INFO L426 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:35,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:35,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1602738831, now seen corresponding path program 14 times [2020-01-16 21:18:35,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:35,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164053731] [2020-01-16 21:18:35,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:35,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:35,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164053731] [2020-01-16 21:18:35,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:35,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:35,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619475014] [2020-01-16 21:18:35,832 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:35,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:35,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:35,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:35,833 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:35,834 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 82 transitions. Second operand 6 states. [2020-01-16 21:18:35,834 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:35,834 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:35,834 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:36,006 INFO L129 PetriNetUnfolder]: 22/172 cut-off events. [2020-01-16 21:18:36,007 INFO L130 PetriNetUnfolder]: For 13561/13785 co-relation queries the response was YES. [2020-01-16 21:18:36,010 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 172 events. 22/172 cut-off events. For 13561/13785 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1152 event pairs. 10/179 useless extension candidates. Maximal degree in co-relation 1189. Up to 32 conditions per place. [2020-01-16 21:18:36,011 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 34 selfloop transitions, 50 changer transitions [2020-01-16 21:18:36,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:36,013 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:36,013 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:36,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:36,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:36,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:36,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:36,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:36,015 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:36,015 INFO L174 Difference]: Start difference. First operand has 127 places, 82 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:36,016 INFO L199 Difference]: Finished difference. Result has 134 places, 84 transitions [2020-01-16 21:18:36,016 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2536, PETRI_PLACES=134, PETRI_TRANSITIONS=84} [2020-01-16 21:18:36,017 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 134 places, 84 transitions [2020-01-16 21:18:36,017 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 134 places, 84 transitions [2020-01-16 21:18:36,080 INFO L129 PetriNetUnfolder]: 21/170 cut-off events. [2020-01-16 21:18:36,081 INFO L130 PetriNetUnfolder]: For 13452/13465 co-relation queries the response was YES. [2020-01-16 21:18:36,085 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 170 events. 21/170 cut-off events. For 13452/13465 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1171 event pairs. 1/168 useless extension candidates. Maximal degree in co-relation 1159. Up to 28 conditions per place. [2020-01-16 21:18:36,087 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 134 places, 0 of 84 transitions, 22 of 2536 flow. [2020-01-16 21:18:36,087 INFO L478 AbstractCegarLoop]: Abstraction has has 133 places, 84 transitions [2020-01-16 21:18:36,088 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:36,159 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:18:36,159 INFO L130 PetriNetUnfolder]: For 13602/13629 co-relation queries the response was YES. [2020-01-16 21:18:36,159 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:36,160 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:36,160 INFO L426 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:36,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:36,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1683142233, now seen corresponding path program 15 times [2020-01-16 21:18:36,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:36,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581050677] [2020-01-16 21:18:36,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:36,276 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 21:18:36,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581050677] [2020-01-16 21:18:36,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:36,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:36,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732243919] [2020-01-16 21:18:36,277 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:36,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:36,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:36,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:36,278 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:36,278 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 84 transitions. Second operand 6 states. [2020-01-16 21:18:36,278 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:36,279 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:36,279 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:36,460 INFO L129 PetriNetUnfolder]: 22/171 cut-off events. [2020-01-16 21:18:36,460 INFO L130 PetriNetUnfolder]: For 14878/15023 co-relation queries the response was YES. [2020-01-16 21:18:36,465 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 171 events. 22/171 cut-off events. For 14878/15023 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1143 event pairs. 10/180 useless extension candidates. Maximal degree in co-relation 1217. Up to 32 conditions per place. [2020-01-16 21:18:36,466 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 34 selfloop transitions, 51 changer transitions [2020-01-16 21:18:36,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:36,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:36,468 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:36,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:36,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:36,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:36,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:36,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:36,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:36,470 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:36,470 INFO L174 Difference]: Start difference. First operand has 133 places, 84 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:36,472 INFO L199 Difference]: Finished difference. Result has 141 places, 87 transitions [2020-01-16 21:18:36,472 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2768, PETRI_PLACES=141, PETRI_TRANSITIONS=87} [2020-01-16 21:18:36,473 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 141 places, 87 transitions [2020-01-16 21:18:36,473 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 141 places, 87 transitions [2020-01-16 21:18:36,535 INFO L129 PetriNetUnfolder]: 21/169 cut-off events. [2020-01-16 21:18:36,535 INFO L130 PetriNetUnfolder]: For 15489/15520 co-relation queries the response was YES. [2020-01-16 21:18:36,538 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 169 events. 21/169 cut-off events. For 15489/15520 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1152 event pairs. 0/166 useless extension candidates. Maximal degree in co-relation 1206. Up to 28 conditions per place. [2020-01-16 21:18:36,540 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 141 places, 0 of 87 transitions, 22 of 2768 flow. [2020-01-16 21:18:36,540 INFO L478 AbstractCegarLoop]: Abstraction has has 140 places, 87 transitions [2020-01-16 21:18:36,540 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:36,595 INFO L129 PetriNetUnfolder]: 21/161 cut-off events. [2020-01-16 21:18:36,596 INFO L130 PetriNetUnfolder]: For 15339/15356 co-relation queries the response was YES. [2020-01-16 21:18:36,596 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:36,596 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:36,596 INFO L426 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:36,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:36,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1916397161, now seen corresponding path program 16 times [2020-01-16 21:18:36,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:36,597 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081749844] [2020-01-16 21:18:36,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:36,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081749844] [2020-01-16 21:18:36,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:36,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:36,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190590155] [2020-01-16 21:18:36,703 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:36,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:36,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:36,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:36,704 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:36,705 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 87 transitions. Second operand 6 states. [2020-01-16 21:18:36,705 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:36,705 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:36,705 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:36,904 INFO L129 PetriNetUnfolder]: 22/170 cut-off events. [2020-01-16 21:18:36,904 INFO L130 PetriNetUnfolder]: For 16730/16880 co-relation queries the response was YES. [2020-01-16 21:18:36,910 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 170 events. 22/170 cut-off events. For 16730/16880 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1141 event pairs. 10/179 useless extension candidates. Maximal degree in co-relation 1263. Up to 32 conditions per place. [2020-01-16 21:18:36,911 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 35 selfloop transitions, 48 changer transitions [2020-01-16 21:18:36,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:36,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2020-01-16 21:18:36,915 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-01-16 21:18:36,915 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2020-01-16 21:18:36,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2020-01-16 21:18:36,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:36,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2020-01-16 21:18:36,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:36,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:36,919 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:36,919 INFO L174 Difference]: Start difference. First operand has 140 places, 87 transitions. Second operand 6 states and 192 transitions. [2020-01-16 21:18:36,921 INFO L199 Difference]: Finished difference. Result has 146 places, 87 transitions [2020-01-16 21:18:36,922 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2864, PETRI_PLACES=146, PETRI_TRANSITIONS=87} [2020-01-16 21:18:36,922 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 146 places, 87 transitions [2020-01-16 21:18:36,922 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 146 places, 87 transitions [2020-01-16 21:18:37,010 INFO L129 PetriNetUnfolder]: 21/168 cut-off events. [2020-01-16 21:18:37,011 INFO L130 PetriNetUnfolder]: For 16852/16869 co-relation queries the response was YES. [2020-01-16 21:18:37,016 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 168 events. 21/168 cut-off events. For 16852/16869 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1144 event pairs. 1/166 useless extension candidates. Maximal degree in co-relation 1221. Up to 28 conditions per place. [2020-01-16 21:18:37,018 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 146 places, 0 of 87 transitions, 22 of 2864 flow. [2020-01-16 21:18:37,018 INFO L478 AbstractCegarLoop]: Abstraction has has 145 places, 87 transitions [2020-01-16 21:18:37,019 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:37,107 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:18:37,108 INFO L130 PetriNetUnfolder]: For 16852/16869 co-relation queries the response was YES. [2020-01-16 21:18:37,108 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:37,108 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:37,108 INFO L426 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:37,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1374394767, now seen corresponding path program 17 times [2020-01-16 21:18:37,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:37,109 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531042461] [2020-01-16 21:18:37,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:37,242 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531042461] [2020-01-16 21:18:37,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:37,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:37,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096341605] [2020-01-16 21:18:37,244 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:37,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:37,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:37,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:37,245 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:37,245 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 87 transitions. Second operand 6 states. [2020-01-16 21:18:37,245 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:37,246 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:37,247 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:37,442 INFO L129 PetriNetUnfolder]: 22/169 cut-off events. [2020-01-16 21:18:37,442 INFO L130 PetriNetUnfolder]: For 18319/18459 co-relation queries the response was YES. [2020-01-16 21:18:37,446 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1536 conditions, 169 events. 22/169 cut-off events. For 18319/18459 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1140 event pairs. 3/171 useless extension candidates. Maximal degree in co-relation 1277. Up to 31 conditions per place. [2020-01-16 21:18:37,447 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 30 selfloop transitions, 52 changer transitions [2020-01-16 21:18:37,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2020-01-16 21:18:37,449 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2020-01-16 21:18:37,449 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2020-01-16 21:18:37,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2020-01-16 21:18:37,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:37,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2020-01-16 21:18:37,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:37,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:37,453 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:37,453 INFO L174 Difference]: Start difference. First operand has 145 places, 87 transitions. Second operand 6 states and 191 transitions. [2020-01-16 21:18:37,454 INFO L199 Difference]: Finished difference. Result has 152 places, 88 transitions [2020-01-16 21:18:37,454 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2842, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3022, PETRI_PLACES=152, PETRI_TRANSITIONS=88} [2020-01-16 21:18:37,455 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 152 places, 88 transitions [2020-01-16 21:18:37,455 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 152 places, 88 transitions [2020-01-16 21:18:37,523 INFO L129 PetriNetUnfolder]: 21/167 cut-off events. [2020-01-16 21:18:37,523 INFO L130 PetriNetUnfolder]: For 18608/18625 co-relation queries the response was YES. [2020-01-16 21:18:37,526 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 167 events. 21/167 cut-off events. For 18608/18625 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1137 event pairs. 1/165 useless extension candidates. Maximal degree in co-relation 1242. Up to 28 conditions per place. [2020-01-16 21:18:37,529 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 152 places, 0 of 88 transitions, 22 of 3022 flow. [2020-01-16 21:18:37,529 INFO L478 AbstractCegarLoop]: Abstraction has has 151 places, 88 transitions [2020-01-16 21:18:37,529 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:37,594 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:18:37,594 INFO L130 PetriNetUnfolder]: For 18608/18625 co-relation queries the response was YES. [2020-01-16 21:18:37,594 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:37,595 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:37,595 INFO L426 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:37,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:37,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1239313505, now seen corresponding path program 18 times [2020-01-16 21:18:37,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:37,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291824409] [2020-01-16 21:18:37,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:37,716 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291824409] [2020-01-16 21:18:37,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:37,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:37,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052530420] [2020-01-16 21:18:37,717 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:37,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:37,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:37,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:37,719 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:37,720 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 88 transitions. Second operand 6 states. [2020-01-16 21:18:37,720 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:37,720 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:37,720 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:37,908 INFO L129 PetriNetUnfolder]: 22/168 cut-off events. [2020-01-16 21:18:37,909 INFO L130 PetriNetUnfolder]: For 20202/20342 co-relation queries the response was YES. [2020-01-16 21:18:37,912 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1567 conditions, 168 events. 22/168 cut-off events. For 20202/20342 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1120 event pairs. 21/187 useless extension candidates. Maximal degree in co-relation 1296. Up to 30 conditions per place. [2020-01-16 21:18:37,913 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 31 selfloop transitions, 52 changer transitions [2020-01-16 21:18:37,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2020-01-16 21:18:37,915 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2020-01-16 21:18:37,915 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2020-01-16 21:18:37,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2020-01-16 21:18:37,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:37,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2020-01-16 21:18:37,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:37,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:37,917 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:37,917 INFO L174 Difference]: Start difference. First operand has 151 places, 88 transitions. Second operand 6 states and 191 transitions. [2020-01-16 21:18:37,919 INFO L199 Difference]: Finished difference. Result has 158 places, 89 transitions [2020-01-16 21:18:37,919 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3000, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3173, PETRI_PLACES=158, PETRI_TRANSITIONS=89} [2020-01-16 21:18:37,920 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 158 places, 89 transitions [2020-01-16 21:18:37,920 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 158 places, 89 transitions [2020-01-16 21:18:37,996 INFO L129 PetriNetUnfolder]: 21/166 cut-off events. [2020-01-16 21:18:37,997 INFO L130 PetriNetUnfolder]: For 20457/20474 co-relation queries the response was YES. [2020-01-16 21:18:38,000 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 166 events. 21/166 cut-off events. For 20457/20474 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1127 event pairs. 1/164 useless extension candidates. Maximal degree in co-relation 1261. Up to 28 conditions per place. [2020-01-16 21:18:38,002 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 158 places, 0 of 89 transitions, 22 of 3173 flow. [2020-01-16 21:18:38,002 INFO L478 AbstractCegarLoop]: Abstraction has has 157 places, 89 transitions [2020-01-16 21:18:38,002 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:38,082 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:18:38,083 INFO L130 PetriNetUnfolder]: For 20633/20664 co-relation queries the response was YES. [2020-01-16 21:18:38,083 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:38,083 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:38,083 INFO L426 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:38,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:38,084 INFO L82 PathProgramCache]: Analyzing trace with hash 2072996273, now seen corresponding path program 19 times [2020-01-16 21:18:38,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:38,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079217072] [2020-01-16 21:18:38,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:38,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079217072] [2020-01-16 21:18:38,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:38,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:38,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210565245] [2020-01-16 21:18:38,170 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:38,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:38,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:38,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:38,171 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:38,171 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 89 transitions. Second operand 6 states. [2020-01-16 21:18:38,172 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:38,172 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:38,172 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:38,385 INFO L129 PetriNetUnfolder]: 22/167 cut-off events. [2020-01-16 21:18:38,385 INFO L130 PetriNetUnfolder]: For 22102/22242 co-relation queries the response was YES. [2020-01-16 21:18:38,388 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1596 conditions, 167 events. 22/167 cut-off events. For 22102/22242 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1123 event pairs. 3/168 useless extension candidates. Maximal degree in co-relation 1313. Up to 30 conditions per place. [2020-01-16 21:18:38,389 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 32 selfloop transitions, 51 changer transitions [2020-01-16 21:18:38,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:38,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2020-01-16 21:18:38,391 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2020-01-16 21:18:38,391 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2020-01-16 21:18:38,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2020-01-16 21:18:38,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:38,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2020-01-16 21:18:38,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:38,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:38,393 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:38,393 INFO L174 Difference]: Start difference. First operand has 157 places, 89 transitions. Second operand 6 states and 191 transitions. [2020-01-16 21:18:38,395 INFO L199 Difference]: Finished difference. Result has 163 places, 89 transitions [2020-01-16 21:18:38,396 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3151, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3275, PETRI_PLACES=163, PETRI_TRANSITIONS=89} [2020-01-16 21:18:38,396 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 163 places, 89 transitions [2020-01-16 21:18:38,396 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 163 places, 89 transitions [2020-01-16 21:18:38,468 INFO L129 PetriNetUnfolder]: 21/165 cut-off events. [2020-01-16 21:18:38,468 INFO L130 PetriNetUnfolder]: For 22372/22401 co-relation queries the response was YES. [2020-01-16 21:18:38,472 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 165 events. 21/165 cut-off events. For 22372/22401 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1130 event pairs. 0/161 useless extension candidates. Maximal degree in co-relation 1273. Up to 28 conditions per place. [2020-01-16 21:18:38,473 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 163 places, 0 of 89 transitions, 22 of 3275 flow. [2020-01-16 21:18:38,474 INFO L478 AbstractCegarLoop]: Abstraction has has 162 places, 89 transitions [2020-01-16 21:18:38,474 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:38,541 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:18:38,541 INFO L130 PetriNetUnfolder]: For 22372/22401 co-relation queries the response was YES. [2020-01-16 21:18:38,541 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:38,542 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:38,542 INFO L426 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:38,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:38,542 INFO L82 PathProgramCache]: Analyzing trace with hash 687611539, now seen corresponding path program 20 times [2020-01-16 21:18:38,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:38,543 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714827605] [2020-01-16 21:18:38,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:38,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714827605] [2020-01-16 21:18:38,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:38,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:38,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457154235] [2020-01-16 21:18:38,636 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:38,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:38,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:38,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:38,638 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:38,638 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 89 transitions. Second operand 6 states. [2020-01-16 21:18:38,638 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:38,638 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:38,638 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:38,813 INFO L129 PetriNetUnfolder]: 22/166 cut-off events. [2020-01-16 21:18:38,814 INFO L130 PetriNetUnfolder]: For 23936/24074 co-relation queries the response was YES. [2020-01-16 21:18:38,817 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 166 events. 22/166 cut-off events. For 23936/24074 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1123 event pairs. 10/175 useless extension candidates. Maximal degree in co-relation 1323. Up to 29 conditions per place. [2020-01-16 21:18:38,818 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 34 selfloop transitions, 50 changer transitions [2020-01-16 21:18:38,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:38,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2020-01-16 21:18:38,820 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2020-01-16 21:18:38,820 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2020-01-16 21:18:38,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2020-01-16 21:18:38,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:38,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2020-01-16 21:18:38,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:38,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:38,822 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:38,822 INFO L174 Difference]: Start difference. First operand has 162 places, 89 transitions. Second operand 6 states and 191 transitions. [2020-01-16 21:18:38,824 INFO L199 Difference]: Finished difference. Result has 168 places, 89 transitions [2020-01-16 21:18:38,824 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3253, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3375, PETRI_PLACES=168, PETRI_TRANSITIONS=89} [2020-01-16 21:18:38,824 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 168 places, 89 transitions [2020-01-16 21:18:38,825 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 168 places, 89 transitions [2020-01-16 21:18:38,903 INFO L129 PetriNetUnfolder]: 21/164 cut-off events. [2020-01-16 21:18:38,903 INFO L130 PetriNetUnfolder]: For 24097/24125 co-relation queries the response was YES. [2020-01-16 21:18:38,907 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 164 events. 21/164 cut-off events. For 24097/24125 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1123 event pairs. 0/160 useless extension candidates. Maximal degree in co-relation 1278. Up to 28 conditions per place. [2020-01-16 21:18:38,909 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 168 places, 0 of 89 transitions, 22 of 3375 flow. [2020-01-16 21:18:38,909 INFO L478 AbstractCegarLoop]: Abstraction has has 167 places, 89 transitions [2020-01-16 21:18:38,909 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:38,986 INFO L129 PetriNetUnfolder]: 21/162 cut-off events. [2020-01-16 21:18:38,987 INFO L130 PetriNetUnfolder]: For 24485/24545 co-relation queries the response was YES. [2020-01-16 21:18:38,987 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:38,987 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:38,987 INFO L426 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:38,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:38,987 INFO L82 PathProgramCache]: Analyzing trace with hash 970316883, now seen corresponding path program 21 times [2020-01-16 21:18:38,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:38,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483217868] [2020-01-16 21:18:38,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:39,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483217868] [2020-01-16 21:18:39,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:39,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:39,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542846850] [2020-01-16 21:18:39,090 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:39,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:39,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:39,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:39,091 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:39,091 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 89 transitions. Second operand 6 states. [2020-01-16 21:18:39,091 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:39,091 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:39,091 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:39,274 INFO L129 PetriNetUnfolder]: 23/181 cut-off events. [2020-01-16 21:18:39,275 INFO L130 PetriNetUnfolder]: For 28804/29023 co-relation queries the response was YES. [2020-01-16 21:18:39,279 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1785 conditions, 181 events. 23/181 cut-off events. For 28804/29023 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1261 event pairs. 10/189 useless extension candidates. Maximal degree in co-relation 1494. Up to 32 conditions per place. [2020-01-16 21:18:39,281 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 35 selfloop transitions, 55 changer transitions [2020-01-16 21:18:39,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2020-01-16 21:18:39,282 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2020-01-16 21:18:39,283 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2020-01-16 21:18:39,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2020-01-16 21:18:39,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:39,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2020-01-16 21:18:39,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:39,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:39,286 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:39,286 INFO L174 Difference]: Start difference. First operand has 167 places, 89 transitions. Second operand 6 states and 191 transitions. [2020-01-16 21:18:39,288 INFO L199 Difference]: Finished difference. Result has 176 places, 95 transitions [2020-01-16 21:18:39,289 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3353, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3818, PETRI_PLACES=176, PETRI_TRANSITIONS=95} [2020-01-16 21:18:39,289 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 176 places, 95 transitions [2020-01-16 21:18:39,289 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 176 places, 95 transitions [2020-01-16 21:18:39,363 INFO L129 PetriNetUnfolder]: 23/181 cut-off events. [2020-01-16 21:18:39,363 INFO L130 PetriNetUnfolder]: For 29772/29829 co-relation queries the response was YES. [2020-01-16 21:18:39,365 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1800 conditions, 181 events. 23/181 cut-off events. For 29772/29829 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1271 event pairs. 0/177 useless extension candidates. Maximal degree in co-relation 1501. Up to 30 conditions per place. [2020-01-16 21:18:39,366 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 176 places, 0 of 95 transitions, 24 of 3818 flow. [2020-01-16 21:18:39,367 INFO L478 AbstractCegarLoop]: Abstraction has has 175 places, 95 transitions [2020-01-16 21:18:39,367 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:39,431 INFO L129 PetriNetUnfolder]: 23/177 cut-off events. [2020-01-16 21:18:39,431 INFO L130 PetriNetUnfolder]: For 30015/30103 co-relation queries the response was YES. [2020-01-16 21:18:39,431 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:39,431 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:39,431 INFO L426 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:39,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:39,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1520787943, now seen corresponding path program 22 times [2020-01-16 21:18:39,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:39,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776577418] [2020-01-16 21:18:39,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:39,532 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776577418] [2020-01-16 21:18:39,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:39,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:39,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822214303] [2020-01-16 21:18:39,533 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:39,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:39,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:39,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:39,534 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:39,534 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 95 transitions. Second operand 6 states. [2020-01-16 21:18:39,534 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:39,534 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:39,534 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:39,786 INFO L129 PetriNetUnfolder]: 23/180 cut-off events. [2020-01-16 21:18:39,786 INFO L130 PetriNetUnfolder]: For 30970/31090 co-relation queries the response was YES. [2020-01-16 21:18:39,791 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 180 events. 23/180 cut-off events. For 30970/31090 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1247 event pairs. 8/187 useless extension candidates. Maximal degree in co-relation 1539. Up to 31 conditions per place. [2020-01-16 21:18:39,792 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 35 selfloop transitions, 56 changer transitions [2020-01-16 21:18:39,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:39,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2020-01-16 21:18:39,794 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2020-01-16 21:18:39,794 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2020-01-16 21:18:39,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2020-01-16 21:18:39,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:39,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2020-01-16 21:18:39,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:39,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:39,796 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:39,796 INFO L174 Difference]: Start difference. First operand has 175 places, 95 transitions. Second operand 6 states and 191 transitions. [2020-01-16 21:18:39,798 INFO L199 Difference]: Finished difference. Result has 183 places, 97 transitions [2020-01-16 21:18:39,798 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3794, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4053, PETRI_PLACES=183, PETRI_TRANSITIONS=97} [2020-01-16 21:18:39,799 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 183 places, 97 transitions [2020-01-16 21:18:39,799 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 183 places, 97 transitions [2020-01-16 21:18:39,954 INFO L129 PetriNetUnfolder]: 23/180 cut-off events. [2020-01-16 21:18:39,954 INFO L130 PetriNetUnfolder]: For 32688/32780 co-relation queries the response was YES. [2020-01-16 21:18:39,959 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 180 events. 23/180 cut-off events. For 32688/32780 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1250 event pairs. 1/177 useless extension candidates. Maximal degree in co-relation 1537. Up to 30 conditions per place. [2020-01-16 21:18:39,961 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 183 places, 0 of 97 transitions, 24 of 4053 flow. [2020-01-16 21:18:39,961 INFO L478 AbstractCegarLoop]: Abstraction has has 182 places, 97 transitions [2020-01-16 21:18:39,961 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:40,047 INFO L129 PetriNetUnfolder]: 23/178 cut-off events. [2020-01-16 21:18:40,047 INFO L130 PetriNetUnfolder]: For 31999/32027 co-relation queries the response was YES. [2020-01-16 21:18:40,047 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:40,047 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:40,047 INFO L426 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:40,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:40,048 INFO L82 PathProgramCache]: Analyzing trace with hash -316884957, now seen corresponding path program 23 times [2020-01-16 21:18:40,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:40,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816830748] [2020-01-16 21:18:40,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:40,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816830748] [2020-01-16 21:18:40,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:40,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:40,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683817791] [2020-01-16 21:18:40,151 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:40,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:40,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:40,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:40,152 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:40,152 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 97 transitions. Second operand 6 states. [2020-01-16 21:18:40,153 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:40,155 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:40,155 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:40,371 INFO L129 PetriNetUnfolder]: 23/179 cut-off events. [2020-01-16 21:18:40,371 INFO L130 PetriNetUnfolder]: For 33599/33719 co-relation queries the response was YES. [2020-01-16 21:18:40,374 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 179 events. 23/179 cut-off events. For 33599/33719 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1238 event pairs. 8/186 useless extension candidates. Maximal degree in co-relation 1573. Up to 31 conditions per place. [2020-01-16 21:18:40,375 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 34 selfloop transitions, 56 changer transitions [2020-01-16 21:18:40,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:40,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2020-01-16 21:18:40,376 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2020-01-16 21:18:40,376 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 190 transitions. [2020-01-16 21:18:40,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 190 transitions. [2020-01-16 21:18:40,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:40,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 190 transitions. [2020-01-16 21:18:40,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:40,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:40,378 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:40,378 INFO L174 Difference]: Start difference. First operand has 182 places, 97 transitions. Second operand 6 states and 190 transitions. [2020-01-16 21:18:40,380 INFO L199 Difference]: Finished difference. Result has 188 places, 97 transitions [2020-01-16 21:18:40,380 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4029, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4165, PETRI_PLACES=188, PETRI_TRANSITIONS=97} [2020-01-16 21:18:40,381 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 188 places, 97 transitions [2020-01-16 21:18:40,381 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 188 places, 97 transitions [2020-01-16 21:18:40,441 INFO L129 PetriNetUnfolder]: 23/179 cut-off events. [2020-01-16 21:18:40,441 INFO L130 PetriNetUnfolder]: For 34131/34158 co-relation queries the response was YES. [2020-01-16 21:18:40,444 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 179 events. 23/179 cut-off events. For 34131/34158 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1256 event pairs. 0/177 useless extension candidates. Maximal degree in co-relation 1541. Up to 30 conditions per place. [2020-01-16 21:18:40,445 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 188 places, 0 of 97 transitions, 24 of 4165 flow. [2020-01-16 21:18:40,445 INFO L478 AbstractCegarLoop]: Abstraction has has 187 places, 97 transitions [2020-01-16 21:18:40,445 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:40,522 INFO L129 PetriNetUnfolder]: 23/178 cut-off events. [2020-01-16 21:18:40,522 INFO L130 PetriNetUnfolder]: For 33969/33983 co-relation queries the response was YES. [2020-01-16 21:18:40,523 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:18:40,523 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 21:18:40,523 INFO L426 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 21:18:40,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:18:40,523 INFO L82 PathProgramCache]: Analyzing trace with hash 838545747, now seen corresponding path program 24 times [2020-01-16 21:18:40,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:18:40,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783669795] [2020-01-16 21:18:40,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:18:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:18:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:18:40,631 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783669795] [2020-01-16 21:18:40,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:18:40,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 21:18:40,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007123235] [2020-01-16 21:18:40,632 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 21:18:40,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:18:40,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 21:18:40,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 21:18:40,633 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 40 [2020-01-16 21:18:40,633 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 97 transitions. Second operand 6 states. [2020-01-16 21:18:40,633 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:18:40,633 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 40 [2020-01-16 21:18:40,633 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:18:40,801 INFO L129 PetriNetUnfolder]: 23/178 cut-off events. [2020-01-16 21:18:40,801 INFO L130 PetriNetUnfolder]: For 35853/35973 co-relation queries the response was YES. [2020-01-16 21:18:40,805 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 178 events. 23/178 cut-off events. For 35853/35973 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1246 event pairs. 8/185 useless extension candidates. Maximal degree in co-relation 1575. Up to 30 conditions per place. [2020-01-16 21:18:40,806 INFO L123 encePairwiseOnDemand]: 34/40 looper letters, 33 selfloop transitions, 56 changer transitions [2020-01-16 21:18:40,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 21:18:40,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-01-16 21:18:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2020-01-16 21:18:40,808 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.7875 [2020-01-16 21:18:40,808 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 189 transitions. [2020-01-16 21:18:40,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 189 transitions. [2020-01-16 21:18:40,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:18:40,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 189 transitions. [2020-01-16 21:18:40,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-01-16 21:18:40,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-01-16 21:18:40,810 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-01-16 21:18:40,810 INFO L174 Difference]: Start difference. First operand has 187 places, 97 transitions. Second operand 6 states and 189 transitions. [2020-01-16 21:18:40,813 INFO L199 Difference]: Finished difference. Result has 192 places, 96 transitions [2020-01-16 21:18:40,813 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4141, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4203, PETRI_PLACES=192, PETRI_TRANSITIONS=96} [2020-01-16 21:18:40,813 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 192 places, 96 transitions [2020-01-16 21:18:40,813 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 192 places, 96 transitions [2020-01-16 21:18:40,912 INFO L129 PetriNetUnfolder]: 23/178 cut-off events. [2020-01-16 21:18:40,912 INFO L130 PetriNetUnfolder]: For 35198/35213 co-relation queries the response was YES. [2020-01-16 21:18:40,915 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 178 events. 23/178 cut-off events. For 35198/35213 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1253 event pairs. 0/177 useless extension candidates. Maximal degree in co-relation 1543. Up to 30 conditions per place. [2020-01-16 21:18:40,916 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 2 of 192 places, 0 of 96 transitions, 24 of 4203 flow. [2020-01-16 21:18:40,916 INFO L478 AbstractCegarLoop]: Abstraction has has 190 places, 96 transitions [2020-01-16 21:18:40,916 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 21:18:40,976 INFO L129 PetriNetUnfolder]: 23/178 cut-off events. [2020-01-16 21:18:40,977 INFO L130 PetriNetUnfolder]: For 35360/35388 co-relation queries the response was YES. [2020-01-16 21:18:40,981 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 09:18:40 BasicIcfg [2020-01-16 21:18:40,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 21:18:40,983 INFO L168 Benchmark]: Toolchain (without parser) took 11441.29 ms. Allocated memory was 139.5 MB in the beginning and 474.5 MB in the end (delta: 335.0 MB). Free memory was 121.4 MB in the beginning and 391.6 MB in the end (delta: -270.3 MB). Peak memory consumption was 399.1 MB. Max. memory is 7.1 GB. [2020-01-16 21:18:40,984 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.34 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-01-16 21:18:40,984 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.47 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 119.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-01-16 21:18:40,985 INFO L168 Benchmark]: Boogie Preprocessor took 20.47 ms. Allocated memory is still 139.5 MB. Free memory was 119.6 MB in the beginning and 118.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 21:18:40,985 INFO L168 Benchmark]: RCFGBuilder took 255.83 ms. Allocated memory is still 139.5 MB. Free memory was 118.5 MB in the beginning and 108.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-01-16 21:18:40,986 INFO L168 Benchmark]: TraceAbstraction took 11125.62 ms. Allocated memory was 139.5 MB in the beginning and 474.5 MB in the end (delta: 335.0 MB). Free memory was 107.8 MB in the beginning and 391.6 MB in the end (delta: -283.8 MB). Peak memory consumption was 385.5 MB. Max. memory is 7.1 GB. [2020-01-16 21:18:40,988 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 0.34 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.47 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 119.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.47 ms. Allocated memory is still 139.5 MB. Free memory was 119.6 MB in the beginning and 118.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 255.83 ms. Allocated memory is still 139.5 MB. Free memory was 118.5 MB in the beginning and 108.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11125.62 ms. Allocated memory was 139.5 MB in the beginning and 474.5 MB in the end (delta: 335.0 MB). Free memory was 107.8 MB in the beginning and 391.6 MB in the end (delta: -283.8 MB). Peak memory consumption was 385.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.1s, 36 ProgramPointsBefore, 30 ProgramPointsAfterwards, 35 TransitionsBefore, 30 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 60 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 66 CheckedPairsTotal, 5 TotalNumberOfCompositions - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 10.9s, OverallIterations: 27, TraceHistogramMax: 1, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 233 SDtfs, 280 SDslu, 152 SDs, 0 SdLazy, 478 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 27 MinimizatonAttempts, 30 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 44316 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...