/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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 -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:18:49,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:18:49,359 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 [2023-12-09 15:18:49,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:18:49,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:18:49,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:18:49,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:18:49,391 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:18:49,392 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:18:49,395 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:18:49,395 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:18:49,395 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:18:49,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:18:49,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:18:49,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:18:49,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:18:49,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:18:49,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:18:49,398 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:18:49,398 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:18:49,398 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:18:49,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:18:49,399 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:18:49,399 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:18:49,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:18:49,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:18:49,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:18:49,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:18:49,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:18:49,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:18:49,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:18:49,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:18:49,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:18:49,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:18:49,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:18:49,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:18:49,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:18:49,652 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:18:49,652 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:18:49,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2023-12-09 15:18:50,782 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:18:50,947 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:18:50,947 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2023-12-09 15:18:50,957 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d6da09b/dcdd8c55b8c54f58af800dcba261eb83/FLAG2910a497e [2023-12-09 15:18:50,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d6da09b/dcdd8c55b8c54f58af800dcba261eb83 [2023-12-09 15:18:50,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:18:50,976 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:18:50,979 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:18:50,979 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:18:50,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:18:50,984 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:18:50" (1/1) ... [2023-12-09 15:18:50,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f37e0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:50, skipping insertion in model container [2023-12-09 15:18:50,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:18:50" (1/1) ... [2023-12-09 15:18:51,022 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:18:51,218 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2023-12-09 15:18:51,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:18:51,247 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:18:51,287 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2023-12-09 15:18:51,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:18:51,304 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:18:51,305 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:18:51,312 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:18:51,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:51 WrapperNode [2023-12-09 15:18:51,313 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:18:51,314 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:18:51,314 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:18:51,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:18:51,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:51" (1/1) ... [2023-12-09 15:18:51,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:51" (1/1) ... [2023-12-09 15:18:51,375 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 315 [2023-12-09 15:18:51,376 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:18:51,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:18:51,377 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:18:51,377 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:18:51,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:51" (1/1) ... [2023-12-09 15:18:51,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:51" (1/1) ... [2023-12-09 15:18:51,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:51" (1/1) ... [2023-12-09 15:18:51,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:51" (1/1) ... [2023-12-09 15:18:51,414 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:51" (1/1) ... [2023-12-09 15:18:51,418 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:51" (1/1) ... [2023-12-09 15:18:51,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:51" (1/1) ... [2023-12-09 15:18:51,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:51" (1/1) ... [2023-12-09 15:18:51,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:18:51,426 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:18:51,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:18:51,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:18:51,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:51" (1/1) ... [2023-12-09 15:18:51,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:18:51,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:18:51,478 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) [2023-12-09 15:18:51,493 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 [2023-12-09 15:18:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:18:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:18:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:18:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:18:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:18:51,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:18:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:18:51,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:18:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-09 15:18:51,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-09 15:18:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-12-09 15:18:51,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-12-09 15:18:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:18:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:18:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:18:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:18:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:18:51,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:18:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:18:51,531 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:18:51,670 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:18:51,672 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:18:52,171 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:18:52,323 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:18:52,324 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-09 15:18:52,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:18:52 BoogieIcfgContainer [2023-12-09 15:18:52,325 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:18:52,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:18:52,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:18:52,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:18:52,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:18:50" (1/3) ... [2023-12-09 15:18:52,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3ea399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:18:52, skipping insertion in model container [2023-12-09 15:18:52,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:18:51" (2/3) ... [2023-12-09 15:18:52,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3ea399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:18:52, skipping insertion in model container [2023-12-09 15:18:52,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:18:52" (3/3) ... [2023-12-09 15:18:52,333 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2023-12-09 15:18:52,349 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:18:52,349 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:18:52,349 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:18:52,428 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-09 15:18:52,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 221 transitions, 470 flow [2023-12-09 15:18:52,532 INFO L124 PetriNetUnfolderBase]: 15/217 cut-off events. [2023-12-09 15:18:52,532 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 15:18:52,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 217 events. 15/217 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 143 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 175. Up to 2 conditions per place. [2023-12-09 15:18:52,538 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 221 transitions, 470 flow [2023-12-09 15:18:52,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 204 transitions, 432 flow [2023-12-09 15:18:52,550 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:18:52,555 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;@8c9af5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:18:52,555 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-12-09 15:18:52,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:18:52,594 INFO L124 PetriNetUnfolderBase]: 15/203 cut-off events. [2023-12-09 15:18:52,594 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 15:18:52,594 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:52,595 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:18:52,595 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:18:52,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:52,600 INFO L85 PathProgramCache]: Analyzing trace with hash -532492394, now seen corresponding path program 1 times [2023-12-09 15:18:52,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:52,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415486815] [2023-12-09 15:18:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:52,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:18:52,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:52,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415486815] [2023-12-09 15:18:52,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415486815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:18:52,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:18:52,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-09 15:18:52,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715057201] [2023-12-09 15:18:52,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:18:52,887 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-09 15:18:52,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:52,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-09 15:18:52,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-09 15:18:52,927 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 221 [2023-12-09 15:18:52,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 204 transitions, 432 flow. Second operand has 2 states, 2 states have (on average 200.0) internal successors, (400), 2 states have internal predecessors, (400), 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) [2023-12-09 15:18:52,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:52,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 221 [2023-12-09 15:18:52,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:53,319 INFO L124 PetriNetUnfolderBase]: 479/1468 cut-off events. [2023-12-09 15:18:53,319 INFO L125 PetriNetUnfolderBase]: For 274/274 co-relation queries the response was YES. [2023-12-09 15:18:53,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 1468 events. 479/1468 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9309 event pairs, 262 based on Foata normal form. 348/1684 useless extension candidates. Maximal degree in co-relation 1974. Up to 635 conditions per place. [2023-12-09 15:18:53,346 INFO L140 encePairwiseOnDemand]: 211/221 looper letters, 16 selfloop transitions, 0 changer transitions 5/194 dead transitions. [2023-12-09 15:18:53,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 194 transitions, 444 flow [2023-12-09 15:18:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-09 15:18:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-12-09 15:18:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 414 transitions. [2023-12-09 15:18:53,364 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9366515837104072 [2023-12-09 15:18:53,365 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 414 transitions. [2023-12-09 15:18:53,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 414 transitions. [2023-12-09 15:18:53,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:53,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 414 transitions. [2023-12-09 15:18:53,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 207.0) internal successors, (414), 2 states have internal predecessors, (414), 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) [2023-12-09 15:18:53,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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) [2023-12-09 15:18:53,381 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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) [2023-12-09 15:18:53,385 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 1 predicate places. [2023-12-09 15:18:53,386 INFO L500 AbstractCegarLoop]: Abstraction has has 203 places, 194 transitions, 444 flow [2023-12-09 15:18:53,386 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 200.0) internal successors, (400), 2 states have internal predecessors, (400), 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) [2023-12-09 15:18:53,386 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:53,387 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:18:53,387 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:18:53,389 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:18:53,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1078561448, now seen corresponding path program 1 times [2023-12-09 15:18:53,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:53,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511125217] [2023-12-09 15:18:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:53,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:18:54,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:54,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511125217] [2023-12-09 15:18:54,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511125217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:18:54,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:18:54,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:18:54,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367787006] [2023-12-09 15:18:54,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:18:54,151 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:18:54,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:54,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:18:54,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:18:54,156 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 221 [2023-12-09 15:18:54,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 194 transitions, 444 flow. Second operand has 7 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 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) [2023-12-09 15:18:54,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:54,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 221 [2023-12-09 15:18:54,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:54,649 INFO L124 PetriNetUnfolderBase]: 595/1825 cut-off events. [2023-12-09 15:18:54,650 INFO L125 PetriNetUnfolderBase]: For 707/1055 co-relation queries the response was YES. [2023-12-09 15:18:54,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3661 conditions, 1825 events. 595/1825 cut-off events. For 707/1055 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12657 event pairs, 63 based on Foata normal form. 0/1608 useless extension candidates. Maximal degree in co-relation 3189. Up to 796 conditions per place. [2023-12-09 15:18:54,668 INFO L140 encePairwiseOnDemand]: 206/221 looper letters, 57 selfloop transitions, 7 changer transitions 10/213 dead transitions. [2023-12-09 15:18:54,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 213 transitions, 681 flow [2023-12-09 15:18:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:18:54,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:18:54,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1470 transitions. [2023-12-09 15:18:54,672 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7390648567119156 [2023-12-09 15:18:54,672 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1470 transitions. [2023-12-09 15:18:54,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1470 transitions. [2023-12-09 15:18:54,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:54,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1470 transitions. [2023-12-09 15:18:54,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.33333333333334) internal successors, (1470), 9 states have internal predecessors, (1470), 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) [2023-12-09 15:18:54,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 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) [2023-12-09 15:18:54,683 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 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) [2023-12-09 15:18:54,685 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 9 predicate places. [2023-12-09 15:18:54,685 INFO L500 AbstractCegarLoop]: Abstraction has has 211 places, 213 transitions, 681 flow [2023-12-09 15:18:54,686 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 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) [2023-12-09 15:18:54,686 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:54,687 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:18:54,687 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:18:54,687 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:18:54,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:54,688 INFO L85 PathProgramCache]: Analyzing trace with hash 827512739, now seen corresponding path program 1 times [2023-12-09 15:18:54,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:54,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115380709] [2023-12-09 15:18:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:54,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:55,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:18:55,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:55,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115380709] [2023-12-09 15:18:55,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115380709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:18:55,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:18:55,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 15:18:55,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000383284] [2023-12-09 15:18:55,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:18:55,216 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 15:18:55,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:55,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 15:18:55,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-09 15:18:55,222 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 221 [2023-12-09 15:18:55,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 213 transitions, 681 flow. Second operand has 8 states, 8 states have (on average 160.5) internal successors, (1284), 8 states have internal predecessors, (1284), 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) [2023-12-09 15:18:55,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:55,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 221 [2023-12-09 15:18:55,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:56,122 INFO L124 PetriNetUnfolderBase]: 1357/3766 cut-off events. [2023-12-09 15:18:56,123 INFO L125 PetriNetUnfolderBase]: For 2460/3168 co-relation queries the response was YES. [2023-12-09 15:18:56,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9683 conditions, 3766 events. 1357/3766 cut-off events. For 2460/3168 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 30990 event pairs, 79 based on Foata normal form. 0/3416 useless extension candidates. Maximal degree in co-relation 8970. Up to 1804 conditions per place. [2023-12-09 15:18:56,166 INFO L140 encePairwiseOnDemand]: 206/221 looper letters, 99 selfloop transitions, 18 changer transitions 16/272 dead transitions. [2023-12-09 15:18:56,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 272 transitions, 1337 flow [2023-12-09 15:18:56,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-09 15:18:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-12-09 15:18:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1798 transitions. [2023-12-09 15:18:56,170 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.739613327848622 [2023-12-09 15:18:56,171 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1798 transitions. [2023-12-09 15:18:56,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1798 transitions. [2023-12-09 15:18:56,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:56,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1798 transitions. [2023-12-09 15:18:56,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 163.45454545454547) internal successors, (1798), 11 states have internal predecessors, (1798), 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) [2023-12-09 15:18:56,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 221.0) internal successors, (2652), 12 states have internal predecessors, (2652), 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) [2023-12-09 15:18:56,181 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 221.0) internal successors, (2652), 12 states have internal predecessors, (2652), 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) [2023-12-09 15:18:56,182 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 19 predicate places. [2023-12-09 15:18:56,183 INFO L500 AbstractCegarLoop]: Abstraction has has 221 places, 272 transitions, 1337 flow [2023-12-09 15:18:56,184 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 160.5) internal successors, (1284), 8 states have internal predecessors, (1284), 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) [2023-12-09 15:18:56,184 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:56,184 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:18:56,184 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:18:56,185 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:18:56,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:56,185 INFO L85 PathProgramCache]: Analyzing trace with hash 217058335, now seen corresponding path program 1 times [2023-12-09 15:18:56,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:56,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623781914] [2023-12-09 15:18:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:56,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:18:56,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:56,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623781914] [2023-12-09 15:18:56,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623781914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:18:56,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:18:56,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-09 15:18:56,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215152415] [2023-12-09 15:18:56,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:18:56,666 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:18:56,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:56,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:18:56,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:18:56,670 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 221 [2023-12-09 15:18:56,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 272 transitions, 1337 flow. Second operand has 11 states, 11 states have (on average 141.36363636363637) internal successors, (1555), 11 states have internal predecessors, (1555), 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) [2023-12-09 15:18:56,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:56,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 221 [2023-12-09 15:18:56,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:57,799 INFO L124 PetriNetUnfolderBase]: 1430/4208 cut-off events. [2023-12-09 15:18:57,799 INFO L125 PetriNetUnfolderBase]: For 4700/6070 co-relation queries the response was YES. [2023-12-09 15:18:57,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12589 conditions, 4208 events. 1430/4208 cut-off events. For 4700/6070 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 35468 event pairs, 85 based on Foata normal form. 49/3871 useless extension candidates. Maximal degree in co-relation 10339. Up to 1926 conditions per place. [2023-12-09 15:18:57,842 INFO L140 encePairwiseOnDemand]: 200/221 looper letters, 134 selfloop transitions, 6 changer transitions 62/322 dead transitions. [2023-12-09 15:18:57,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 322 transitions, 2114 flow [2023-12-09 15:18:57,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-09 15:18:57,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-12-09 15:18:57,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2420 transitions. [2023-12-09 15:18:57,848 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6441309555496406 [2023-12-09 15:18:57,848 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2420 transitions. [2023-12-09 15:18:57,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2420 transitions. [2023-12-09 15:18:57,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:57,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2420 transitions. [2023-12-09 15:18:57,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 142.35294117647058) internal successors, (2420), 17 states have internal predecessors, (2420), 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) [2023-12-09 15:18:57,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 221.0) internal successors, (3978), 18 states have internal predecessors, (3978), 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) [2023-12-09 15:18:57,862 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 221.0) internal successors, (3978), 18 states have internal predecessors, (3978), 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) [2023-12-09 15:18:57,863 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 35 predicate places. [2023-12-09 15:18:57,863 INFO L500 AbstractCegarLoop]: Abstraction has has 237 places, 322 transitions, 2114 flow [2023-12-09 15:18:57,864 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 141.36363636363637) internal successors, (1555), 11 states have internal predecessors, (1555), 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) [2023-12-09 15:18:57,864 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:57,864 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:18:57,864 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:18:57,865 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:18:57,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:57,865 INFO L85 PathProgramCache]: Analyzing trace with hash 200860199, now seen corresponding path program 1 times [2023-12-09 15:18:57,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:57,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651403998] [2023-12-09 15:18:57,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:57,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:18:58,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:58,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651403998] [2023-12-09 15:18:58,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651403998] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:18:58,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356461090] [2023-12-09 15:18:58,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:58,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:18:58,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:18:58,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:18:58,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:18:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:58,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:18:58,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:18:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:18:58,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:18:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:18:59,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356461090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:18:59,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:18:59,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2023-12-09 15:18:59,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352468051] [2023-12-09 15:18:59,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:18:59,126 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-09 15:18:59,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-09 15:18:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-12-09 15:18:59,131 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 221 [2023-12-09 15:18:59,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 322 transitions, 2114 flow. Second operand has 24 states, 24 states have (on average 139.5) internal successors, (3348), 24 states have internal predecessors, (3348), 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) [2023-12-09 15:18:59,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:59,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 221 [2023-12-09 15:18:59,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:00,241 INFO L124 PetriNetUnfolderBase]: 1430/4149 cut-off events. [2023-12-09 15:19:00,241 INFO L125 PetriNetUnfolderBase]: For 6376/7474 co-relation queries the response was YES. [2023-12-09 15:19:00,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14698 conditions, 4149 events. 1430/4149 cut-off events. For 6376/7474 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 33726 event pairs, 73 based on Foata normal form. 60/3842 useless extension candidates. Maximal degree in co-relation 12360. Up to 1980 conditions per place. [2023-12-09 15:19:00,299 INFO L140 encePairwiseOnDemand]: 194/221 looper letters, 127 selfloop transitions, 19 changer transitions 87/352 dead transitions. [2023-12-09 15:19:00,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 352 transitions, 2832 flow [2023-12-09 15:19:00,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-09 15:19:00,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-12-09 15:19:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3355 transitions. [2023-12-09 15:19:00,307 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6325414781297134 [2023-12-09 15:19:00,307 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3355 transitions. [2023-12-09 15:19:00,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3355 transitions. [2023-12-09 15:19:00,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:00,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3355 transitions. [2023-12-09 15:19:00,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 139.79166666666666) internal successors, (3355), 24 states have internal predecessors, (3355), 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) [2023-12-09 15:19:00,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 221.0) internal successors, (5525), 25 states have internal predecessors, (5525), 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) [2023-12-09 15:19:00,330 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 221.0) internal successors, (5525), 25 states have internal predecessors, (5525), 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) [2023-12-09 15:19:00,332 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 58 predicate places. [2023-12-09 15:19:00,332 INFO L500 AbstractCegarLoop]: Abstraction has has 260 places, 352 transitions, 2832 flow [2023-12-09 15:19:00,333 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 139.5) internal successors, (3348), 24 states have internal predecessors, (3348), 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) [2023-12-09 15:19:00,333 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:00,334 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:00,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 15:19:00,539 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:00,539 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:19:00,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:00,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1740626573, now seen corresponding path program 2 times [2023-12-09 15:19:00,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:00,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981693995] [2023-12-09 15:19:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:00,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:00,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:19:00,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:00,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981693995] [2023-12-09 15:19:00,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981693995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:00,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:00,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 15:19:00,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485290730] [2023-12-09 15:19:00,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:00,961 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 15:19:00,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:00,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 15:19:00,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-09 15:19:00,964 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 221 [2023-12-09 15:19:00,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 352 transitions, 2832 flow. Second operand has 8 states, 8 states have (on average 160.5) internal successors, (1284), 8 states have internal predecessors, (1284), 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) [2023-12-09 15:19:00,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:00,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 221 [2023-12-09 15:19:00,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:02,268 INFO L124 PetriNetUnfolderBase]: 2168/5944 cut-off events. [2023-12-09 15:19:02,269 INFO L125 PetriNetUnfolderBase]: For 12334/14048 co-relation queries the response was YES. [2023-12-09 15:19:02,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24600 conditions, 5944 events. 2168/5944 cut-off events. For 12334/14048 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 52308 event pairs, 84 based on Foata normal form. 12/5459 useless extension candidates. Maximal degree in co-relation 21743. Up to 2963 conditions per place. [2023-12-09 15:19:02,352 INFO L140 encePairwiseOnDemand]: 206/221 looper letters, 141 selfloop transitions, 25 changer transitions 99/413 dead transitions. [2023-12-09 15:19:02,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 413 transitions, 4108 flow [2023-12-09 15:19:02,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-09 15:19:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-12-09 15:19:02,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1798 transitions. [2023-12-09 15:19:02,357 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.739613327848622 [2023-12-09 15:19:02,357 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1798 transitions. [2023-12-09 15:19:02,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1798 transitions. [2023-12-09 15:19:02,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:02,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1798 transitions. [2023-12-09 15:19:02,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 163.45454545454547) internal successors, (1798), 11 states have internal predecessors, (1798), 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) [2023-12-09 15:19:02,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 221.0) internal successors, (2652), 12 states have internal predecessors, (2652), 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) [2023-12-09 15:19:02,366 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 221.0) internal successors, (2652), 12 states have internal predecessors, (2652), 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) [2023-12-09 15:19:02,368 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 68 predicate places. [2023-12-09 15:19:02,368 INFO L500 AbstractCegarLoop]: Abstraction has has 270 places, 413 transitions, 4108 flow [2023-12-09 15:19:02,369 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 160.5) internal successors, (1284), 8 states have internal predecessors, (1284), 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) [2023-12-09 15:19:02,369 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:02,369 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:02,370 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:19:02,370 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:19:02,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:02,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1618579226, now seen corresponding path program 1 times [2023-12-09 15:19:02,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:02,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476871638] [2023-12-09 15:19:02,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:02,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:19:03,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:03,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476871638] [2023-12-09 15:19:03,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476871638] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:03,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710928105] [2023-12-09 15:19:03,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:03,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:03,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:03,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:19:03,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:19:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:04,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-09 15:19:04,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:19:04,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-09 15:19:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:19:04,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:19:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:19:05,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710928105] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:19:05,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:19:05,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 10] total 31 [2023-12-09 15:19:05,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459395943] [2023-12-09 15:19:05,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:19:05,363 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-09 15:19:05,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:05,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-09 15:19:05,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2023-12-09 15:19:05,368 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 221 [2023-12-09 15:19:05,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 413 transitions, 4108 flow. Second operand has 31 states, 31 states have (on average 121.12903225806451) internal successors, (3755), 31 states have internal predecessors, (3755), 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) [2023-12-09 15:19:05,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:05,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 221 [2023-12-09 15:19:05,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:10,846 INFO L124 PetriNetUnfolderBase]: 7500/17806 cut-off events. [2023-12-09 15:19:10,846 INFO L125 PetriNetUnfolderBase]: For 47561/49141 co-relation queries the response was YES. [2023-12-09 15:19:10,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83142 conditions, 17806 events. 7500/17806 cut-off events. For 47561/49141 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 173708 event pairs, 130 based on Foata normal form. 16/16690 useless extension candidates. Maximal degree in co-relation 72724. Up to 8929 conditions per place. [2023-12-09 15:19:11,290 INFO L140 encePairwiseOnDemand]: 184/221 looper letters, 424 selfloop transitions, 365 changer transitions 258/1148 dead transitions. [2023-12-09 15:19:11,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 1148 transitions, 15632 flow [2023-12-09 15:19:11,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-09 15:19:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-12-09 15:19:11,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 7456 transitions. [2023-12-09 15:19:11,306 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5622926093514329 [2023-12-09 15:19:11,307 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 7456 transitions. [2023-12-09 15:19:11,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 7456 transitions. [2023-12-09 15:19:11,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:11,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 7456 transitions. [2023-12-09 15:19:11,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 124.26666666666667) internal successors, (7456), 60 states have internal predecessors, (7456), 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) [2023-12-09 15:19:11,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 221.0) internal successors, (13481), 61 states have internal predecessors, (13481), 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) [2023-12-09 15:19:11,357 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 221.0) internal successors, (13481), 61 states have internal predecessors, (13481), 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) [2023-12-09 15:19:11,358 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 127 predicate places. [2023-12-09 15:19:11,358 INFO L500 AbstractCegarLoop]: Abstraction has has 329 places, 1148 transitions, 15632 flow [2023-12-09 15:19:11,359 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 121.12903225806451) internal successors, (3755), 31 states have internal predecessors, (3755), 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) [2023-12-09 15:19:11,359 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:11,359 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:11,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:19:11,565 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-09 15:19:11,566 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:19:11,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:11,567 INFO L85 PathProgramCache]: Analyzing trace with hash -448902332, now seen corresponding path program 2 times [2023-12-09 15:19:11,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:11,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809680692] [2023-12-09 15:19:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:11,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:13,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:13,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809680692] [2023-12-09 15:19:13,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809680692] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:13,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753808400] [2023-12-09 15:19:13,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:19:13,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:13,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:13,076 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:19:13,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:19:13,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:19:13,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:19:13,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-09 15:19:13,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:19:14,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-09 15:19:15,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:19:15,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:19:15,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:19:15,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:19:15,654 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:19:15,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-12-09 15:19:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:16,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:19:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:19:16,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753808400] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:19:16,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:19:16,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 32, 11] total 59 [2023-12-09 15:19:16,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985611115] [2023-12-09 15:19:16,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:19:16,804 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-09 15:19:16,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:16,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-09 15:19:16,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=3163, Unknown=0, NotChecked=0, Total=3422 [2023-12-09 15:19:16,811 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 221 [2023-12-09 15:19:16,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 1148 transitions, 15632 flow. Second operand has 59 states, 59 states have (on average 102.08474576271186) internal successors, (6023), 59 states have internal predecessors, (6023), 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) [2023-12-09 15:19:16,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:16,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 221 [2023-12-09 15:19:16,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:31,731 INFO L124 PetriNetUnfolderBase]: 16396/38027 cut-off events. [2023-12-09 15:19:31,732 INFO L125 PetriNetUnfolderBase]: For 126205/131801 co-relation queries the response was YES. [2023-12-09 15:19:31,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202319 conditions, 38027 events. 16396/38027 cut-off events. For 126205/131801 co-relation queries the response was YES. Maximal size of possible extension queue 1569. Compared 415451 event pairs, 261 based on Foata normal form. 270/35939 useless extension candidates. Maximal degree in co-relation 100681. Up to 19464 conditions per place. [2023-12-09 15:19:32,434 INFO L140 encePairwiseOnDemand]: 176/221 looper letters, 1594 selfloop transitions, 470 changer transitions 484/2639 dead transitions. [2023-12-09 15:19:32,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 2639 transitions, 41887 flow [2023-12-09 15:19:32,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-09 15:19:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2023-12-09 15:19:32,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 8771 transitions. [2023-12-09 15:19:32,451 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.472473604826546 [2023-12-09 15:19:32,451 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 8771 transitions. [2023-12-09 15:19:32,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 8771 transitions. [2023-12-09 15:19:32,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:32,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 8771 transitions. [2023-12-09 15:19:32,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 104.41666666666667) internal successors, (8771), 84 states have internal predecessors, (8771), 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) [2023-12-09 15:19:32,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 221.0) internal successors, (18785), 85 states have internal predecessors, (18785), 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) [2023-12-09 15:19:32,496 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 221.0) internal successors, (18785), 85 states have internal predecessors, (18785), 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) [2023-12-09 15:19:32,498 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 210 predicate places. [2023-12-09 15:19:32,498 INFO L500 AbstractCegarLoop]: Abstraction has has 412 places, 2639 transitions, 41887 flow [2023-12-09 15:19:32,500 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 102.08474576271186) internal successors, (6023), 59 states have internal predecessors, (6023), 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) [2023-12-09 15:19:32,500 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:32,500 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:32,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 15:19:32,706 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:32,707 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:19:32,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:32,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1795698804, now seen corresponding path program 3 times [2023-12-09 15:19:32,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:32,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033544890] [2023-12-09 15:19:32,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:32,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:19:33,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:33,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033544890] [2023-12-09 15:19:33,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033544890] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:33,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475526185] [2023-12-09 15:19:33,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:19:33,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:33,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:33,185 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:19:33,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:19:33,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:19:33,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:19:33,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-09 15:19:33,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:19:33,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-09 15:19:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:19:34,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:19:34,370 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:19:34,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-12-09 15:19:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-09 15:19:34,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475526185] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:19:34,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:19:34,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 10] total 28 [2023-12-09 15:19:34,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354861625] [2023-12-09 15:19:34,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:19:34,525 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-09 15:19:34,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:34,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-09 15:19:34,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2023-12-09 15:19:34,531 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 221 [2023-12-09 15:19:34,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 2639 transitions, 41887 flow. Second operand has 28 states, 28 states have (on average 127.71428571428571) internal successors, (3576), 28 states have internal predecessors, (3576), 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) [2023-12-09 15:19:34,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:34,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 221 [2023-12-09 15:19:34,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:47,983 INFO L124 PetriNetUnfolderBase]: 18598/42996 cut-off events. [2023-12-09 15:19:47,983 INFO L125 PetriNetUnfolderBase]: For 169915/176771 co-relation queries the response was YES. [2023-12-09 15:19:48,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254891 conditions, 42996 events. 18598/42996 cut-off events. For 169915/176771 co-relation queries the response was YES. Maximal size of possible extension queue 1728. Compared 476237 event pairs, 302 based on Foata normal form. 171/40561 useless extension candidates. Maximal degree in co-relation 123851. Up to 22540 conditions per place. [2023-12-09 15:19:48,626 INFO L140 encePairwiseOnDemand]: 189/221 looper letters, 2023 selfloop transitions, 653 changer transitions 567/3365 dead transitions. [2023-12-09 15:19:48,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 3365 transitions, 60074 flow [2023-12-09 15:19:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-09 15:19:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-12-09 15:19:48,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 6044 transitions. [2023-12-09 15:19:48,633 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5945307889041904 [2023-12-09 15:19:48,633 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 6044 transitions. [2023-12-09 15:19:48,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 6044 transitions. [2023-12-09 15:19:48,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:48,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 6044 transitions. [2023-12-09 15:19:48,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 131.3913043478261) internal successors, (6044), 46 states have internal predecessors, (6044), 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) [2023-12-09 15:19:48,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 221.0) internal successors, (10387), 47 states have internal predecessors, (10387), 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) [2023-12-09 15:19:48,653 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 221.0) internal successors, (10387), 47 states have internal predecessors, (10387), 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) [2023-12-09 15:19:48,654 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 255 predicate places. [2023-12-09 15:19:48,654 INFO L500 AbstractCegarLoop]: Abstraction has has 457 places, 3365 transitions, 60074 flow [2023-12-09 15:19:48,655 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 127.71428571428571) internal successors, (3576), 28 states have internal predecessors, (3576), 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) [2023-12-09 15:19:48,655 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:48,655 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:48,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 15:19:48,859 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:48,860 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:19:48,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:48,860 INFO L85 PathProgramCache]: Analyzing trace with hash 362807580, now seen corresponding path program 4 times [2023-12-09 15:19:48,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:48,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989666667] [2023-12-09 15:19:48,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:48,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:50,057 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:19:50,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:50,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989666667] [2023-12-09 15:19:50,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989666667] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:50,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487316845] [2023-12-09 15:19:50,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:19:50,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:50,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:50,060 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:19:50,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:19:50,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:19:50,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:19:50,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-09 15:19:50,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:19:50,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-09 15:19:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:19:51,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:19:51,304 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:19:51,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-12-09 15:19:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-09 15:19:51,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487316845] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:19:51,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:19:51,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 10] total 31 [2023-12-09 15:19:51,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240877990] [2023-12-09 15:19:51,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:19:51,450 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-09 15:19:51,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:51,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-09 15:19:51,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-12-09 15:19:51,453 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 221 [2023-12-09 15:19:51,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 3365 transitions, 60074 flow. Second operand has 31 states, 31 states have (on average 121.12903225806451) internal successors, (3755), 31 states have internal predecessors, (3755), 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) [2023-12-09 15:19:51,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:51,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 221 [2023-12-09 15:19:51,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:20:11,124 INFO L124 PetriNetUnfolderBase]: 22322/49923 cut-off events. [2023-12-09 15:20:11,125 INFO L125 PetriNetUnfolderBase]: For 236702/245286 co-relation queries the response was YES. [2023-12-09 15:20:11,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334361 conditions, 49923 events. 22322/49923 cut-off events. For 236702/245286 co-relation queries the response was YES. Maximal size of possible extension queue 2046. Compared 551953 event pairs, 286 based on Foata normal form. 190/47286 useless extension candidates. Maximal degree in co-relation 160635. Up to 27277 conditions per place. [2023-12-09 15:20:12,011 INFO L140 encePairwiseOnDemand]: 184/221 looper letters, 2826 selfloop transitions, 957 changer transitions 696/4581 dead transitions. [2023-12-09 15:20:12,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 4581 transitions, 91310 flow [2023-12-09 15:20:12,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-09 15:20:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-12-09 15:20:12,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 6311 transitions. [2023-12-09 15:20:12,097 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5599325703131931 [2023-12-09 15:20:12,097 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 6311 transitions. [2023-12-09 15:20:12,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 6311 transitions. [2023-12-09 15:20:12,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:20:12,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 6311 transitions. [2023-12-09 15:20:12,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 123.74509803921569) internal successors, (6311), 51 states have internal predecessors, (6311), 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) [2023-12-09 15:20:12,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 221.0) internal successors, (11492), 52 states have internal predecessors, (11492), 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) [2023-12-09 15:20:12,121 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 221.0) internal successors, (11492), 52 states have internal predecessors, (11492), 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) [2023-12-09 15:20:12,121 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 305 predicate places. [2023-12-09 15:20:12,122 INFO L500 AbstractCegarLoop]: Abstraction has has 507 places, 4581 transitions, 91310 flow [2023-12-09 15:20:12,123 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 121.12903225806451) internal successors, (3755), 31 states have internal predecessors, (3755), 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) [2023-12-09 15:20:12,123 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:20:12,123 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:20:12,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-09 15:20:12,329 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-09 15:20:12,330 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:20:12,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:20:12,330 INFO L85 PathProgramCache]: Analyzing trace with hash 350531592, now seen corresponding path program 5 times [2023-12-09 15:20:12,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:20:12,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901970152] [2023-12-09 15:20:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:20:12,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:20:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:20:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:20:12,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:20:12,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901970152] [2023-12-09 15:20:12,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901970152] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:20:12,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338997571] [2023-12-09 15:20:12,806 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:20:12,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:20:12,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:20:12,807 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:20:12,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:20:12,977 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:20:12,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:20:12,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-09 15:20:12,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:20:13,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-09 15:20:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:20:14,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:20:14,300 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:20:14,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-12-09 15:20:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:20:14,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338997571] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:20:14,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:20:14,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 24, 11] total 38 [2023-12-09 15:20:14,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265624737] [2023-12-09 15:20:14,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:20:14,513 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-09 15:20:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:20:14,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-09 15:20:14,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2023-12-09 15:20:14,517 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 221 [2023-12-09 15:20:14,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 4581 transitions, 91310 flow. Second operand has 38 states, 38 states have (on average 115.76315789473684) internal successors, (4399), 38 states have internal predecessors, (4399), 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) [2023-12-09 15:20:14,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:20:14,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 221 [2023-12-09 15:20:14,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:20:41,568 INFO L124 PetriNetUnfolderBase]: 23342/52484 cut-off events. [2023-12-09 15:20:41,568 INFO L125 PetriNetUnfolderBase]: For 300740/312597 co-relation queries the response was YES. [2023-12-09 15:20:41,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382112 conditions, 52484 events. 23342/52484 cut-off events. For 300740/312597 co-relation queries the response was YES. Maximal size of possible extension queue 2129. Compared 585313 event pairs, 278 based on Foata normal form. 398/49902 useless extension candidates. Maximal degree in co-relation 179700. Up to 28672 conditions per place. [2023-12-09 15:20:42,500 INFO L140 encePairwiseOnDemand]: 180/221 looper letters, 3404 selfloop transitions, 757 changer transitions 780/5037 dead transitions. [2023-12-09 15:20:42,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 5037 transitions, 110420 flow [2023-12-09 15:20:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-09 15:20:42,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-12-09 15:20:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 10487 transitions. [2023-12-09 15:20:42,510 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5331740301998068 [2023-12-09 15:20:42,511 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 10487 transitions. [2023-12-09 15:20:42,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 10487 transitions. [2023-12-09 15:20:42,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:20:42,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 10487 transitions. [2023-12-09 15:20:42,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 117.8314606741573) internal successors, (10487), 89 states have internal predecessors, (10487), 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) [2023-12-09 15:20:42,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 221.0) internal successors, (19890), 90 states have internal predecessors, (19890), 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) [2023-12-09 15:20:42,544 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 221.0) internal successors, (19890), 90 states have internal predecessors, (19890), 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) [2023-12-09 15:20:42,545 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 393 predicate places. [2023-12-09 15:20:42,545 INFO L500 AbstractCegarLoop]: Abstraction has has 595 places, 5037 transitions, 110420 flow [2023-12-09 15:20:42,546 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 115.76315789473684) internal successors, (4399), 38 states have internal predecessors, (4399), 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) [2023-12-09 15:20:42,546 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:20:42,546 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:20:42,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 15:20:42,751 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:20:42,752 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:20:42,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:20:42,753 INFO L85 PathProgramCache]: Analyzing trace with hash -929678750, now seen corresponding path program 6 times [2023-12-09 15:20:42,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:20:42,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912443067] [2023-12-09 15:20:42,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:20:42,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:20:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:20:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:20:43,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:20:43,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912443067] [2023-12-09 15:20:43,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912443067] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:20:43,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475637053] [2023-12-09 15:20:43,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:20:43,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:20:43,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:20:43,252 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:20:43,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:20:43,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-09 15:20:43,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:20:43,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-09 15:20:43,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:20:43,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-09 15:20:44,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:20:44,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:20:44,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:20:44,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:20:44,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-09 15:20:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:20:44,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:20:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-09 15:20:45,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475637053] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:20:45,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:20:45,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 27, 10] total 39 [2023-12-09 15:20:45,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754128594] [2023-12-09 15:20:45,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:20:45,232 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-09 15:20:45,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:20:45,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-09 15:20:45,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2023-12-09 15:20:45,235 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-12-09 15:20:45,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 5037 transitions, 110420 flow. Second operand has 39 states, 39 states have (on average 107.76923076923077) internal successors, (4203), 39 states have internal predecessors, (4203), 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) [2023-12-09 15:20:45,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:20:45,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-12-09 15:20:45,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:21:24,573 INFO L124 PetriNetUnfolderBase]: 26688/60694 cut-off events. [2023-12-09 15:21:24,573 INFO L125 PetriNetUnfolderBase]: For 414474/432452 co-relation queries the response was YES. [2023-12-09 15:21:24,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474834 conditions, 60694 events. 26688/60694 cut-off events. For 414474/432452 co-relation queries the response was YES. Maximal size of possible extension queue 2457. Compared 697573 event pairs, 338 based on Foata normal form. 451/57606 useless extension candidates. Maximal degree in co-relation 217517. Up to 33234 conditions per place. [2023-12-09 15:21:25,861 INFO L140 encePairwiseOnDemand]: 183/221 looper letters, 4105 selfloop transitions, 1371 changer transitions 987/6560 dead transitions. [2023-12-09 15:21:25,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 6560 transitions, 156515 flow [2023-12-09 15:21:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-09 15:21:25,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-12-09 15:21:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 6979 transitions. [2023-12-09 15:21:25,867 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5012569130216189 [2023-12-09 15:21:25,867 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 6979 transitions. [2023-12-09 15:21:25,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 6979 transitions. [2023-12-09 15:21:25,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:21:25,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 6979 transitions. [2023-12-09 15:21:25,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 110.77777777777777) internal successors, (6979), 63 states have internal predecessors, (6979), 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) [2023-12-09 15:21:25,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 221.0) internal successors, (14144), 64 states have internal predecessors, (14144), 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) [2023-12-09 15:21:25,891 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 221.0) internal successors, (14144), 64 states have internal predecessors, (14144), 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) [2023-12-09 15:21:25,891 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 455 predicate places. [2023-12-09 15:21:25,891 INFO L500 AbstractCegarLoop]: Abstraction has has 657 places, 6560 transitions, 156515 flow [2023-12-09 15:21:25,892 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 107.76923076923077) internal successors, (4203), 39 states have internal predecessors, (4203), 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) [2023-12-09 15:21:25,892 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:21:25,892 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:21:25,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-09 15:21:26,102 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:21:26,102 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:21:26,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:21:26,103 INFO L85 PathProgramCache]: Analyzing trace with hash -362301666, now seen corresponding path program 7 times [2023-12-09 15:21:26,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:21:26,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371390818] [2023-12-09 15:21:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:21:26,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:21:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:21:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:21:27,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:21:27,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371390818] [2023-12-09 15:21:27,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371390818] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:21:27,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602164586] [2023-12-09 15:21:27,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:21:27,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:21:27,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:21:27,426 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:21:27,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:21:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:21:27,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-09 15:21:27,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:21:28,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:21:28,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-09 15:21:28,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-09 15:21:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:21:28,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:21:28,843 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:21:28,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 35 [2023-12-09 15:21:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:21:29,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602164586] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:21:29,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:21:29,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 18] total 47 [2023-12-09 15:21:29,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103331430] [2023-12-09 15:21:29,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:21:29,353 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-09 15:21:29,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:21:29,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-09 15:21:29,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1971, Unknown=2, NotChecked=0, Total=2162 [2023-12-09 15:21:29,357 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-12-09 15:21:29,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 6560 transitions, 156515 flow. Second operand has 47 states, 47 states have (on average 107.93617021276596) internal successors, (5073), 47 states have internal predecessors, (5073), 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) [2023-12-09 15:21:29,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:21:29,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-12-09 15:21:29,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:22:29,863 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:22:29,863 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:22:30,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-09 15:22:30,347 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-12-09 15:22:30,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-09 15:22:30,548 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-09 15:22:30,549 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 103/221 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 573200 conditions, 68009 events (30402/68008 cut-off events. For 526129/548300 co-relation queries the response was YES. Maximal size of possible extension queue 2806. Compared 801679 event pairs, 276 based on Foata normal form. 701/65121 useless extension candidates. Maximal degree in co-relation 259954. Up to 37563 conditions per place.). [2023-12-09 15:22:30,550 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-12-09 15:22:30,551 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-12-09 15:22:30,551 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-12-09 15:22:30,551 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-12-09 15:22:30,551 INFO L457 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1, 1, 1] [2023-12-09 15:22:30,554 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:22:30,554 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:22:30,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:22:30 BasicIcfg [2023-12-09 15:22:30,557 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:22:30,557 INFO L158 Benchmark]: Toolchain (without parser) took 219581.33ms. Allocated memory was 291.5MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 233.4MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-09 15:22:30,557 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 202.4MB. Free memory was 154.4MB in the beginning and 154.3MB in the end (delta: 181.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:22:30,557 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.05ms. Allocated memory is still 291.5MB. Free memory was 233.4MB in the beginning and 220.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-09 15:22:30,557 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.00ms. Allocated memory is still 291.5MB. Free memory was 220.9MB in the beginning and 217.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-09 15:22:30,558 INFO L158 Benchmark]: Boogie Preprocessor took 48.90ms. Allocated memory is still 291.5MB. Free memory was 217.7MB in the beginning and 215.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:22:30,558 INFO L158 Benchmark]: RCFGBuilder took 899.35ms. Allocated memory is still 291.5MB. Free memory was 215.6MB in the beginning and 162.1MB in the end (delta: 53.5MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. [2023-12-09 15:22:30,558 INFO L158 Benchmark]: TraceAbstraction took 218227.99ms. Allocated memory was 291.5MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 161.6MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-09 15:22:30,559 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 202.4MB. Free memory was 154.4MB in the beginning and 154.3MB in the end (delta: 181.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 334.05ms. Allocated memory is still 291.5MB. Free memory was 233.4MB in the beginning and 220.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.00ms. Allocated memory is still 291.5MB. Free memory was 220.9MB in the beginning and 217.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.90ms. Allocated memory is still 291.5MB. Free memory was 217.7MB in the beginning and 215.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 899.35ms. Allocated memory is still 291.5MB. Free memory was 215.6MB in the beginning and 162.1MB in the end (delta: 53.5MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. * TraceAbstraction took 218227.99ms. Allocated memory was 291.5MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 161.6MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 103/221 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 573200 conditions, 68009 events (30402/68008 cut-off events. For 526129/548300 co-relation queries the response was YES. Maximal size of possible extension queue 2806. Compared 801679 event pairs, 276 based on Foata normal form. 701/65121 useless extension candidates. Maximal degree in co-relation 259954. Up to 37563 conditions per place.). - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 103/221 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 573200 conditions, 68009 events (30402/68008 cut-off events. For 526129/548300 co-relation queries the response was YES. Maximal size of possible extension queue 2806. Compared 801679 event pairs, 276 based on Foata normal form. 701/65121 useless extension candidates. Maximal degree in co-relation 259954. Up to 37563 conditions per place.). - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 103/221 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 573200 conditions, 68009 events (30402/68008 cut-off events. For 526129/548300 co-relation queries the response was YES. Maximal size of possible extension queue 2806. Compared 801679 event pairs, 276 based on Foata normal form. 701/65121 useless extension candidates. Maximal degree in co-relation 259954. Up to 37563 conditions per place.). - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 103/221 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 573200 conditions, 68009 events (30402/68008 cut-off events. For 526129/548300 co-relation queries the response was YES. Maximal size of possible extension queue 2806. Compared 801679 event pairs, 276 based on Foata normal form. 701/65121 useless extension candidates. Maximal degree in co-relation 259954. Up to 37563 conditions per place.). - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 103/221 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 573200 conditions, 68009 events (30402/68008 cut-off events. For 526129/548300 co-relation queries the response was YES. Maximal size of possible extension queue 2806. Compared 801679 event pairs, 276 based on Foata normal form. 701/65121 useless extension candidates. Maximal degree in co-relation 259954. Up to 37563 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 251 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 218.1s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 191.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7116 SdHoareTripleChecker+Valid, 10.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7116 mSDsluCounter, 8364 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7684 mSDsCounter, 857 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19715 IncrementalHoareTripleChecker+Invalid, 20572 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 857 mSolverCounterUnsat, 680 mSDtfsCounter, 19715 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3630 GetRequests, 2869 SyntacticMatches, 2 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19300 ImplicationChecksByTransitivity, 19.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156515occurred in iteration=12, InterpolantAutomatonStates: 467, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 21.7s InterpolantComputationTime, 3878 NumberOfCodeBlocks, 3870 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 5364 ConstructedInterpolants, 6 QuantifiedInterpolants, 33087 SizeOfPredicates, 204 NumberOfNonLiveVariables, 3652 ConjunctsInSsa, 341 ConjunctsInUnsatCore, 29 InterpolantComputations, 5 PerfectInterpolantSequences, 174/319 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown