/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 08:58:44,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 08:58:44,543 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 08:58:44,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 08:58:44,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 08:58:44,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 08:58:44,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 08:58:44,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 08:58:44,575 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 08:58:44,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 08:58:44,579 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 08:58:44,579 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 08:58:44,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 08:58:44,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 08:58:44,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 08:58:44,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 08:58:44,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 08:58:44,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 08:58:44,582 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 08:58:44,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 08:58:44,582 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 08:58:44,583 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 08:58:44,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 08:58:44,583 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 08:58:44,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 08:58:44,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 08:58:44,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 08:58:44,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 08:58:44,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 08:58:44,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 08:58:44,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 08:58:44,586 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 08:58:44,586 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 08:58:44,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 08:58:44,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 08:58:44,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 08:58:44,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 08:58:44,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 08:58:44,822 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 08:58:44,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2023-11-30 08:58:45,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 08:58:46,102 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 08:58:46,103 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2023-11-30 08:58:46,110 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe2140ff5/2701fb2345d2430eb6bc384e632514cf/FLAG059de656e [2023-11-30 08:58:46,122 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe2140ff5/2701fb2345d2430eb6bc384e632514cf [2023-11-30 08:58:46,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 08:58:46,126 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 08:58:46,129 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 08:58:46,129 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 08:58:46,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 08:58:46,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 08:58:46" (1/1) ... [2023-11-30 08:58:46,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b4d7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46, skipping insertion in model container [2023-11-30 08:58:46,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 08:58:46" (1/1) ... [2023-11-30 08:58:46,178 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 08:58:46,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 08:58:46,346 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 08:58:46,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 08:58:46,387 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 08:58:46,387 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 08:58:46,392 INFO L206 MainTranslator]: Completed translation [2023-11-30 08:58:46,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46 WrapperNode [2023-11-30 08:58:46,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 08:58:46,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 08:58:46,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 08:58:46,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 08:58:46,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46" (1/1) ... [2023-11-30 08:58:46,406 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46" (1/1) ... [2023-11-30 08:58:46,441 INFO L138 Inliner]: procedures = 23, calls = 177, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 426 [2023-11-30 08:58:46,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 08:58:46,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 08:58:46,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 08:58:46,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 08:58:46,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46" (1/1) ... [2023-11-30 08:58:46,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46" (1/1) ... [2023-11-30 08:58:46,454 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46" (1/1) ... [2023-11-30 08:58:46,455 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46" (1/1) ... [2023-11-30 08:58:46,464 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46" (1/1) ... [2023-11-30 08:58:46,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46" (1/1) ... [2023-11-30 08:58:46,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46" (1/1) ... [2023-11-30 08:58:46,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46" (1/1) ... [2023-11-30 08:58:46,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 08:58:46,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 08:58:46,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 08:58:46,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 08:58:46,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46" (1/1) ... [2023-11-30 08:58:46,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 08:58:46,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 08:58:46,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 08:58:46,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 08:58:46,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 08:58:46,543 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 08:58:46,543 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 08:58:46,543 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 08:58:46,543 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 08:58:46,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-30 08:58:46,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-30 08:58:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-30 08:58:46,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-30 08:58:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 08:58:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 08:58:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 08:58:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 08:58:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 08:58:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 08:58:46,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 08:58:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 08:58:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 08:58:46,548 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 08:58:46,688 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 08:58:46,690 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 08:58:47,122 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 08:58:47,360 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 08:58:47,360 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 08:58:47,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 08:58:47 BoogieIcfgContainer [2023-11-30 08:58:47,362 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 08:58:47,364 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 08:58:47,364 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 08:58:47,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 08:58:47,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 08:58:46" (1/3) ... [2023-11-30 08:58:47,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4550d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 08:58:47, skipping insertion in model container [2023-11-30 08:58:47,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:58:46" (2/3) ... [2023-11-30 08:58:47,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4550d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 08:58:47, skipping insertion in model container [2023-11-30 08:58:47,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 08:58:47" (3/3) ... [2023-11-30 08:58:47,369 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2023-11-30 08:58:47,384 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 08:58:47,384 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-30 08:58:47,384 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 08:58:47,469 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-30 08:58:47,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 233 transitions, 494 flow [2023-11-30 08:58:47,631 INFO L124 PetriNetUnfolderBase]: 2/229 cut-off events. [2023-11-30 08:58:47,631 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-30 08:58:47,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 229 events. 2/229 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 303 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 174. Up to 2 conditions per place. [2023-11-30 08:58:47,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 233 transitions, 494 flow [2023-11-30 08:58:47,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 203 transitions, 427 flow [2023-11-30 08:58:47,660 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 08:58:47,670 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20402f9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 08:58:47,670 INFO L363 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-30 08:58:47,695 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 08:58:47,696 INFO L124 PetriNetUnfolderBase]: 1/96 cut-off events. [2023-11-30 08:58:47,696 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 08:58:47,696 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:58:47,698 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:58:47,699 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-30 08:58:47,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:58:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash 991490186, now seen corresponding path program 1 times [2023-11-30 08:58:47,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:58:47,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118514611] [2023-11-30 08:58:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:58:47,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:58:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:58:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:58:48,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:58:48,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118514611] [2023-11-30 08:58:48,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118514611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:58:48,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:58:48,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 08:58:48,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128109427] [2023-11-30 08:58:48,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:58:48,358 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 08:58:48,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:58:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 08:58:48,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-30 08:58:48,387 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 233 [2023-11-30 08:58:48,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 203 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 154.8) internal successors, (774), 5 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:58:48,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:58:48,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 233 [2023-11-30 08:58:48,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:59:14,814 INFO L124 PetriNetUnfolderBase]: 179039/269574 cut-off events. [2023-11-30 08:59:14,814 INFO L125 PetriNetUnfolderBase]: For 15425/15425 co-relation queries the response was YES. [2023-11-30 08:59:15,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525510 conditions, 269574 events. 179039/269574 cut-off events. For 15425/15425 co-relation queries the response was YES. Maximal size of possible extension queue 6401. Compared 2446588 event pairs, 159809 based on Foata normal form. 1/211689 useless extension candidates. Maximal degree in co-relation 491225. Up to 225825 conditions per place. [2023-11-30 08:59:17,108 INFO L140 encePairwiseOnDemand]: 223/233 looper letters, 108 selfloop transitions, 7 changer transitions 1/241 dead transitions. [2023-11-30 08:59:17,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 241 transitions, 742 flow [2023-11-30 08:59:17,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-30 08:59:17,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-30 08:59:17,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1031 transitions. [2023-11-30 08:59:17,124 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7374821173104434 [2023-11-30 08:59:17,124 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1031 transitions. [2023-11-30 08:59:17,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1031 transitions. [2023-11-30 08:59:17,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:59:17,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1031 transitions. [2023-11-30 08:59:17,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.83333333333334) internal successors, (1031), 6 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:59:17,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:59:17,141 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:59:17,144 INFO L307 CegarLoopForPetriNet]: 215 programPoint places, 3 predicate places. [2023-11-30 08:59:17,144 INFO L500 AbstractCegarLoop]: Abstraction has has 218 places, 241 transitions, 742 flow [2023-11-30 08:59:17,144 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.8) internal successors, (774), 5 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:59:17,145 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:59:17,145 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:59:17,145 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 08:59:17,145 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-30 08:59:17,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:59:17,146 INFO L85 PathProgramCache]: Analyzing trace with hash 991490187, now seen corresponding path program 1 times [2023-11-30 08:59:17,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:59:17,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74398988] [2023-11-30 08:59:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:59:17,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:59:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:59:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:59:17,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:59:17,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74398988] [2023-11-30 08:59:17,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74398988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:59:17,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:59:17,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-30 08:59:17,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657462707] [2023-11-30 08:59:17,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:59:17,545 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-30 08:59:17,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:59:17,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-30 08:59:17,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-30 08:59:17,547 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 233 [2023-11-30 08:59:17,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 241 transitions, 742 flow. Second operand has 8 states, 8 states have (on average 138.375) internal successors, (1107), 8 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:59:17,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:59:17,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 233 [2023-11-30 08:59:17,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:59:59,998 INFO L124 PetriNetUnfolderBase]: 281110/421350 cut-off events. [2023-11-30 08:59:59,999 INFO L125 PetriNetUnfolderBase]: For 51604/56739 co-relation queries the response was YES. [2023-11-30 09:00:01,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180737 conditions, 421350 events. 281110/421350 cut-off events. For 51604/56739 co-relation queries the response was YES. Maximal size of possible extension queue 8918. Compared 3885244 event pairs, 136560 based on Foata normal form. 2/340819 useless extension candidates. Maximal degree in co-relation 1112734. Up to 316359 conditions per place. [2023-11-30 09:00:05,473 INFO L140 encePairwiseOnDemand]: 210/233 looper letters, 334 selfloop transitions, 45 changer transitions 3/498 dead transitions. [2023-11-30 09:00:05,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 498 transitions, 2568 flow [2023-11-30 09:00:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-30 09:00:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-30 09:00:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1330 transitions. [2023-11-30 09:00:05,477 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7135193133047211 [2023-11-30 09:00:05,477 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1330 transitions. [2023-11-30 09:00:05,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1330 transitions. [2023-11-30 09:00:05,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:00:05,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1330 transitions. [2023-11-30 09:00:05,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 166.25) internal successors, (1330), 8 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:00:05,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:00:05,486 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:00:05,488 INFO L307 CegarLoopForPetriNet]: 215 programPoint places, 10 predicate places. [2023-11-30 09:00:05,488 INFO L500 AbstractCegarLoop]: Abstraction has has 225 places, 498 transitions, 2568 flow [2023-11-30 09:00:05,489 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 138.375) internal successors, (1107), 8 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:00:05,489 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:00:05,490 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:00:05,490 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 09:00:05,490 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-30 09:00:05,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:00:05,491 INFO L85 PathProgramCache]: Analyzing trace with hash 159744375, now seen corresponding path program 1 times [2023-11-30 09:00:05,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:00:05,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048849781] [2023-11-30 09:00:05,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:00:05,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:00:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:00:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:00:05,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:00:05,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048849781] [2023-11-30 09:00:05,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048849781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:00:05,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:00:05,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 09:00:05,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246948447] [2023-11-30 09:00:05,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:00:05,751 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 09:00:05,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:00:05,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 09:00:05,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-30 09:00:05,754 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 233 [2023-11-30 09:00:05,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 498 transitions, 2568 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:00:05,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:00:05,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 233 [2023-11-30 09:00:05,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:01:03,444 INFO L124 PetriNetUnfolderBase]: 264153/400745 cut-off events. [2023-11-30 09:01:03,444 INFO L125 PetriNetUnfolderBase]: For 106948/110963 co-relation queries the response was YES. [2023-11-30 09:01:04,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448260 conditions, 400745 events. 264153/400745 cut-off events. For 106948/110963 co-relation queries the response was YES. Maximal size of possible extension queue 8487. Compared 3780663 event pairs, 35434 based on Foata normal form. 27/329771 useless extension candidates. Maximal degree in co-relation 1365199. Up to 302073 conditions per place. [2023-11-30 09:01:08,987 INFO L140 encePairwiseOnDemand]: 225/233 looper letters, 511 selfloop transitions, 15 changer transitions 3/672 dead transitions. [2023-11-30 09:01:08,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 672 transitions, 4693 flow [2023-11-30 09:01:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-30 09:01:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-30 09:01:08,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1028 transitions. [2023-11-30 09:01:09,012 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7353361945636624 [2023-11-30 09:01:09,012 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1028 transitions. [2023-11-30 09:01:09,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1028 transitions. [2023-11-30 09:01:09,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:01:09,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1028 transitions. [2023-11-30 09:01:09,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.33333333333334) internal successors, (1028), 6 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:01:09,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:01:09,020 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:01:09,021 INFO L307 CegarLoopForPetriNet]: 215 programPoint places, 14 predicate places. [2023-11-30 09:01:09,021 INFO L500 AbstractCegarLoop]: Abstraction has has 229 places, 672 transitions, 4693 flow [2023-11-30 09:01:09,022 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:01:09,022 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:01:09,022 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:01:09,022 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 09:01:09,022 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-30 09:01:09,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:01:09,023 INFO L85 PathProgramCache]: Analyzing trace with hash 159744376, now seen corresponding path program 1 times [2023-11-30 09:01:09,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:01:09,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122583313] [2023-11-30 09:01:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:01:09,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:01:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:01:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:01:09,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:01:09,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122583313] [2023-11-30 09:01:09,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122583313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:01:09,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:01:09,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-30 09:01:09,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205979125] [2023-11-30 09:01:09,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:01:09,742 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-30 09:01:09,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:01:09,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-30 09:01:09,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-30 09:01:09,748 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 233 [2023-11-30 09:01:09,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 672 transitions, 4693 flow. Second operand has 8 states, 8 states have (on average 138.5) internal successors, (1108), 8 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:01:09,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:01:09,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 233 [2023-11-30 09:01:09,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:02:28,860 INFO L124 PetriNetUnfolderBase]: 325807/478743 cut-off events. [2023-11-30 09:02:28,861 INFO L125 PetriNetUnfolderBase]: For 147037/150165 co-relation queries the response was YES. [2023-11-30 09:02:30,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209464 conditions, 478743 events. 325807/478743 cut-off events. For 147037/150165 co-relation queries the response was YES. Maximal size of possible extension queue 10091. Compared 4330957 event pairs, 66612 based on Foata normal form. 61/397003 useless extension candidates. Maximal degree in co-relation 2204061. Up to 362978 conditions per place. [2023-11-30 09:02:35,702 INFO L140 encePairwiseOnDemand]: 213/233 looper letters, 1322 selfloop transitions, 201 changer transitions 6/1645 dead transitions. [2023-11-30 09:02:35,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 1645 transitions, 15532 flow [2023-11-30 09:02:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-30 09:02:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-30 09:02:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1316 transitions. [2023-11-30 09:02:35,721 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7060085836909872 [2023-11-30 09:02:35,721 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1316 transitions. [2023-11-30 09:02:35,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1316 transitions. [2023-11-30 09:02:35,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:02:35,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1316 transitions. [2023-11-30 09:02:35,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 164.5) internal successors, (1316), 8 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:02:35,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:02:35,728 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:02:35,729 INFO L307 CegarLoopForPetriNet]: 215 programPoint places, 21 predicate places. [2023-11-30 09:02:35,730 INFO L500 AbstractCegarLoop]: Abstraction has has 236 places, 1645 transitions, 15532 flow [2023-11-30 09:02:35,730 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 138.5) internal successors, (1108), 8 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:02:35,730 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:02:35,730 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:02:35,730 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 09:02:35,731 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-30 09:02:35,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:02:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1406020310, now seen corresponding path program 1 times [2023-11-30 09:02:35,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:02:35,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790087242] [2023-11-30 09:02:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:02:35,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:02:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:02:35,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:02:35,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:02:35,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790087242] [2023-11-30 09:02:35,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790087242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:02:35,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:02:35,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 09:02:35,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992422456] [2023-11-30 09:02:35,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:02:35,978 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 09:02:35,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:02:35,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 09:02:35,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-30 09:02:35,990 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 233 [2023-11-30 09:02:35,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 1645 transitions, 15532 flow. Second operand has 6 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:02:35,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:02:35,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 233 [2023-11-30 09:02:35,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:05:24,386 INFO L124 PetriNetUnfolderBase]: 403858/619054 cut-off events. [2023-11-30 09:05:24,393 INFO L125 PetriNetUnfolderBase]: For 731775/766680 co-relation queries the response was YES. [2023-11-30 09:05:26,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3092462 conditions, 619054 events. 403858/619054 cut-off events. For 731775/766680 co-relation queries the response was YES. Maximal size of possible extension queue 10897. Compared 5995814 event pairs, 30317 based on Foata normal form. 842/516029 useless extension candidates. Maximal degree in co-relation 2874346. Up to 438879 conditions per place. [2023-11-30 09:05:34,744 INFO L140 encePairwiseOnDemand]: 219/233 looper letters, 1922 selfloop transitions, 79 changer transitions 12/2682 dead transitions. [2023-11-30 09:05:34,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 2682 transitions, 30097 flow [2023-11-30 09:05:34,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 09:05:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 09:05:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1268 transitions. [2023-11-30 09:05:34,749 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7774371551195586 [2023-11-30 09:05:34,749 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1268 transitions. [2023-11-30 09:05:34,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1268 transitions. [2023-11-30 09:05:34,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:05:34,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1268 transitions. [2023-11-30 09:05:34,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 181.14285714285714) internal successors, (1268), 7 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:05:34,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:05:34,756 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:05:34,758 INFO L307 CegarLoopForPetriNet]: 215 programPoint places, 27 predicate places. [2023-11-30 09:05:34,758 INFO L500 AbstractCegarLoop]: Abstraction has has 242 places, 2682 transitions, 30097 flow [2023-11-30 09:05:34,759 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:05:34,759 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:05:34,759 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:05:34,759 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 09:05:34,759 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-30 09:05:34,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:05:34,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1406020309, now seen corresponding path program 1 times [2023-11-30 09:05:34,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:05:34,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376252143] [2023-11-30 09:05:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:05:34,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:05:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:05:34,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:05:34,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:05:34,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376252143] [2023-11-30 09:05:34,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376252143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:05:34,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:05:34,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 09:05:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261312475] [2023-11-30 09:05:34,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:05:34,845 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 09:05:34,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:05:34,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 09:05:34,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-30 09:05:34,847 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 233 [2023-11-30 09:05:34,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 2682 transitions, 30097 flow. Second operand has 5 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:05:34,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:05:34,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 233 [2023-11-30 09:05:34,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand