/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/chl-array-int-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:06:43,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:06:43,657 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 15:06:43,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:06:43,695 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:06:43,696 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:06:43,696 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:06:43,696 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:06:43,697 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:06:43,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:06:43,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:06:43,701 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:06:43,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:06:43,702 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:06:43,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:06:43,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:06:43,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:06:43,703 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:06:43,703 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:06:43,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:06:43,704 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:06:43,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:06:43,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:06:43,705 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:06:43,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:06:43,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:06:43,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:06:43,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:06:43,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:06:43,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:06:43,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:06:43,707 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:06:43,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:06:43,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:06:43,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:06:43,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:06:43,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:06:43,902 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:06:43,902 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:06:43,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c [2023-12-09 15:06:45,009 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:06:45,193 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:06:45,193 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c [2023-12-09 15:06:45,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48f2fe82/4a4a6baadc4c4779af93ef7a341adaf6/FLAG15a3d0844 [2023-12-09 15:06:45,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48f2fe82/4a4a6baadc4c4779af93ef7a341adaf6 [2023-12-09 15:06:45,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:06:45,216 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:06:45,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:06:45,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:06:45,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:06:45,221 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:06:45" (1/1) ... [2023-12-09 15:06:45,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7004cc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45, skipping insertion in model container [2023-12-09 15:06:45,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:06:45" (1/1) ... [2023-12-09 15:06:45,246 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:06:45,372 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/chl-array-int-symm.wvr.c[2508,2521] [2023-12-09 15:06:45,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:06:45,387 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:06:45,406 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/chl-array-int-symm.wvr.c[2508,2521] [2023-12-09 15:06:45,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:06:45,432 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:06:45,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45 WrapperNode [2023-12-09 15:06:45,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:06:45,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:06:45,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:06:45,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:06:45,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45" (1/1) ... [2023-12-09 15:06:45,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45" (1/1) ... [2023-12-09 15:06:45,472 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 205 [2023-12-09 15:06:45,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:06:45,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:06:45,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:06:45,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:06:45,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45" (1/1) ... [2023-12-09 15:06:45,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45" (1/1) ... [2023-12-09 15:06:45,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45" (1/1) ... [2023-12-09 15:06:45,489 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45" (1/1) ... [2023-12-09 15:06:45,499 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45" (1/1) ... [2023-12-09 15:06:45,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45" (1/1) ... [2023-12-09 15:06:45,504 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45" (1/1) ... [2023-12-09 15:06:45,506 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45" (1/1) ... [2023-12-09 15:06:45,508 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:06:45,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:06:45,509 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:06:45,509 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:06:45,510 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45" (1/1) ... [2023-12-09 15:06:45,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:06:45,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:06:45,549 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 15:06:45,561 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 15:06:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:06:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:06:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:06:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:06:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:06:45,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:06:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:06:45,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:06:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:06:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:06:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:06:45,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:06:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:06:45,583 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 15:06:45,717 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:06:45,718 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:06:46,087 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:06:46,104 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:06:46,104 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-09 15:06:46,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:06:46 BoogieIcfgContainer [2023-12-09 15:06:46,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:06:46,128 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:06:46,128 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:06:46,131 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:06:46,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:06:45" (1/3) ... [2023-12-09 15:06:46,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4e510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:06:46, skipping insertion in model container [2023-12-09 15:06:46,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:45" (2/3) ... [2023-12-09 15:06:46,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4e510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:06:46, skipping insertion in model container [2023-12-09 15:06:46,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:06:46" (3/3) ... [2023-12-09 15:06:46,133 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2023-12-09 15:06:46,148 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:06:46,148 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:06:46,148 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:06:46,239 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:06:46,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 262 transitions, 538 flow [2023-12-09 15:06:46,382 INFO L124 PetriNetUnfolderBase]: 21/260 cut-off events. [2023-12-09 15:06:46,382 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:06:46,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 260 events. 21/260 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 352 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 168. Up to 3 conditions per place. [2023-12-09 15:06:46,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 262 transitions, 538 flow [2023-12-09 15:06:46,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 251 transitions, 514 flow [2023-12-09 15:06:46,402 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:06:46,408 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;@2070b5d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:06:46,408 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:06:46,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:06:46,453 INFO L124 PetriNetUnfolderBase]: 21/250 cut-off events. [2023-12-09 15:06:46,453 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:06:46,453 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:46,454 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] [2023-12-09 15:06:46,454 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:46,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:46,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1016432532, now seen corresponding path program 1 times [2023-12-09 15:06:46,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:46,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720796345] [2023-12-09 15:06:46,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:46,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:47,872 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 15:06:47,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:47,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720796345] [2023-12-09 15:06:47,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720796345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:47,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:47,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:06:47,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906072440] [2023-12-09 15:06:47,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:47,882 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:06:47,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:47,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:06:47,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:06:47,915 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 262 [2023-12-09 15:06:47,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 251 transitions, 514 flow. Second operand has 20 states, 20 states have (on average 156.7) internal successors, (3134), 20 states have internal predecessors, (3134), 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 15:06:47,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:47,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 262 [2023-12-09 15:06:47,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:49,175 INFO L124 PetriNetUnfolderBase]: 144/1849 cut-off events. [2023-12-09 15:06:49,176 INFO L125 PetriNetUnfolderBase]: For 102/104 co-relation queries the response was YES. [2023-12-09 15:06:49,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2337 conditions, 1849 events. 144/1849 cut-off events. For 102/104 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 13964 event pairs, 57 based on Foata normal form. 91/1752 useless extension candidates. Maximal degree in co-relation 609. Up to 109 conditions per place. [2023-12-09 15:06:49,189 INFO L140 encePairwiseOnDemand]: 208/262 looper letters, 185 selfloop transitions, 34 changer transitions 37/399 dead transitions. [2023-12-09 15:06:49,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 399 transitions, 1361 flow [2023-12-09 15:06:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-09 15:06:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-12-09 15:06:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5665 transitions. [2023-12-09 15:06:49,210 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6177753544165758 [2023-12-09 15:06:49,210 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5665 transitions. [2023-12-09 15:06:49,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5665 transitions. [2023-12-09 15:06:49,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:49,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5665 transitions. [2023-12-09 15:06:49,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 161.85714285714286) internal successors, (5665), 35 states have internal predecessors, (5665), 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 15:06:49,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 262.0) internal successors, (9432), 36 states have internal predecessors, (9432), 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 15:06:49,249 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 262.0) internal successors, (9432), 36 states have internal predecessors, (9432), 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 15:06:49,254 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 34 predicate places. [2023-12-09 15:06:49,254 INFO L500 AbstractCegarLoop]: Abstraction has has 271 places, 399 transitions, 1361 flow [2023-12-09 15:06:49,255 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 156.7) internal successors, (3134), 20 states have internal predecessors, (3134), 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 15:06:49,256 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:49,256 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] [2023-12-09 15:06:49,256 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:06:49,257 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:49,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:49,258 INFO L85 PathProgramCache]: Analyzing trace with hash 238761260, now seen corresponding path program 2 times [2023-12-09 15:06:49,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:49,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763026404] [2023-12-09 15:06:49,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:49,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:50,022 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 15:06:50,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:50,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763026404] [2023-12-09 15:06:50,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763026404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:50,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:50,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:06:50,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48371253] [2023-12-09 15:06:50,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:50,027 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:06:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:50,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:06:50,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:06:50,033 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 262 [2023-12-09 15:06:50,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 399 transitions, 1361 flow. Second operand has 20 states, 20 states have (on average 156.7) internal successors, (3134), 20 states have internal predecessors, (3134), 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 15:06:50,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:50,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 262 [2023-12-09 15:06:50,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:51,177 INFO L124 PetriNetUnfolderBase]: 140/1903 cut-off events. [2023-12-09 15:06:51,177 INFO L125 PetriNetUnfolderBase]: For 299/417 co-relation queries the response was YES. [2023-12-09 15:06:51,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2896 conditions, 1903 events. 140/1903 cut-off events. For 299/417 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 14225 event pairs, 55 based on Foata normal form. 4/1715 useless extension candidates. Maximal degree in co-relation 682. Up to 109 conditions per place. [2023-12-09 15:06:51,190 INFO L140 encePairwiseOnDemand]: 223/262 looper letters, 208 selfloop transitions, 36 changer transitions 59/446 dead transitions. [2023-12-09 15:06:51,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 446 transitions, 2167 flow [2023-12-09 15:06:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-09 15:06:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-12-09 15:06:51,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5611 transitions. [2023-12-09 15:06:51,202 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.611886586695747 [2023-12-09 15:06:51,202 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5611 transitions. [2023-12-09 15:06:51,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5611 transitions. [2023-12-09 15:06:51,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:51,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5611 transitions. [2023-12-09 15:06:51,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.31428571428572) internal successors, (5611), 35 states have internal predecessors, (5611), 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 15:06:51,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 262.0) internal successors, (9432), 36 states have internal predecessors, (9432), 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 15:06:51,229 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 262.0) internal successors, (9432), 36 states have internal predecessors, (9432), 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 15:06:51,230 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 68 predicate places. [2023-12-09 15:06:51,230 INFO L500 AbstractCegarLoop]: Abstraction has has 305 places, 446 transitions, 2167 flow [2023-12-09 15:06:51,231 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 156.7) internal successors, (3134), 20 states have internal predecessors, (3134), 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 15:06:51,231 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:51,231 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] [2023-12-09 15:06:51,232 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:06:51,232 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:51,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:51,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1026696520, now seen corresponding path program 1 times [2023-12-09 15:06:51,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:51,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017414472] [2023-12-09 15:06:51,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:51,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:51,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:51,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017414472] [2023-12-09 15:06:51,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017414472] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:06:51,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154367436] [2023-12-09 15:06:51,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:51,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:51,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:06:51,591 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 15:06:51,627 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 15:06:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:51,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:06:51,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:06:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:52,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:06:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:52,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154367436] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:06:52,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:06:52,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2023-12-09 15:06:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103483693] [2023-12-09 15:06:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:52,550 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:06:52,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:52,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:06:52,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2023-12-09 15:06:52,554 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 262 [2023-12-09 15:06:52,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 446 transitions, 2167 flow. Second operand has 14 states, 14 states have (on average 158.57142857142858) internal successors, (2220), 14 states have internal predecessors, (2220), 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 15:06:52,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:52,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 262 [2023-12-09 15:06:52,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:53,374 INFO L124 PetriNetUnfolderBase]: 191/2553 cut-off events. [2023-12-09 15:06:53,374 INFO L125 PetriNetUnfolderBase]: For 812/1106 co-relation queries the response was YES. [2023-12-09 15:06:53,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4463 conditions, 2553 events. 191/2553 cut-off events. For 812/1106 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 21309 event pairs, 61 based on Foata normal form. 0/2292 useless extension candidates. Maximal degree in co-relation 850. Up to 292 conditions per place. [2023-12-09 15:06:53,388 INFO L140 encePairwiseOnDemand]: 231/262 looper letters, 279 selfloop transitions, 31 changer transitions 77/530 dead transitions. [2023-12-09 15:06:53,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 530 transitions, 3469 flow [2023-12-09 15:06:53,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-09 15:06:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-12-09 15:06:53,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3915 transitions. [2023-12-09 15:06:53,398 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6226145038167938 [2023-12-09 15:06:53,398 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3915 transitions. [2023-12-09 15:06:53,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3915 transitions. [2023-12-09 15:06:53,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:53,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3915 transitions. [2023-12-09 15:06:53,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 163.125) internal successors, (3915), 24 states have internal predecessors, (3915), 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 15:06:53,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 262.0) internal successors, (6550), 25 states have internal predecessors, (6550), 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 15:06:53,421 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 262.0) internal successors, (6550), 25 states have internal predecessors, (6550), 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 15:06:53,422 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 91 predicate places. [2023-12-09 15:06:53,422 INFO L500 AbstractCegarLoop]: Abstraction has has 328 places, 530 transitions, 3469 flow [2023-12-09 15:06:53,423 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 158.57142857142858) internal successors, (2220), 14 states have internal predecessors, (2220), 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 15:06:53,423 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:53,424 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] [2023-12-09 15:06:53,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 15:06:53,629 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:53,630 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:53,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:53,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1518598300, now seen corresponding path program 2 times [2023-12-09 15:06:53,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:53,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864406030] [2023-12-09 15:06:53,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:53,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:53,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:53,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:53,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864406030] [2023-12-09 15:06:53,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864406030] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:06:53,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077764470] [2023-12-09 15:06:53,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:06:53,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:53,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:06:53,956 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 15:06:53,966 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 15:06:54,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-09 15:06:54,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:06:54,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-09 15:06:54,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:06:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:06:54,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:06:54,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077764470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:54,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:06:54,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 25 [2023-12-09 15:06:54,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542002676] [2023-12-09 15:06:54,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:54,435 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:06:54,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:54,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:06:54,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2023-12-09 15:06:54,439 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 262 [2023-12-09 15:06:54,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 530 transitions, 3469 flow. Second operand has 12 states, 12 states have (on average 181.83333333333334) internal successors, (2182), 12 states have internal predecessors, (2182), 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 15:06:54,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:54,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 262 [2023-12-09 15:06:54,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:55,271 INFO L124 PetriNetUnfolderBase]: 223/3150 cut-off events. [2023-12-09 15:06:55,272 INFO L125 PetriNetUnfolderBase]: For 1894/2734 co-relation queries the response was YES. [2023-12-09 15:06:55,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6428 conditions, 3150 events. 223/3150 cut-off events. For 1894/2734 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 27434 event pairs, 28 based on Foata normal form. 10/2827 useless extension candidates. Maximal degree in co-relation 932. Up to 360 conditions per place. [2023-12-09 15:06:55,290 INFO L140 encePairwiseOnDemand]: 238/262 looper letters, 319 selfloop transitions, 24 changer transitions 143/686 dead transitions. [2023-12-09 15:06:55,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 686 transitions, 5734 flow [2023-12-09 15:06:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:06:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:06:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3664 transitions. [2023-12-09 15:06:55,297 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6992366412213741 [2023-12-09 15:06:55,297 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3664 transitions. [2023-12-09 15:06:55,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3664 transitions. [2023-12-09 15:06:55,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:55,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3664 transitions. [2023-12-09 15:06:55,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 183.2) internal successors, (3664), 20 states have internal predecessors, (3664), 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 15:06:55,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 262.0) internal successors, (5502), 21 states have internal predecessors, (5502), 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 15:06:55,313 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 262.0) internal successors, (5502), 21 states have internal predecessors, (5502), 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 15:06:55,313 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 110 predicate places. [2023-12-09 15:06:55,313 INFO L500 AbstractCegarLoop]: Abstraction has has 347 places, 686 transitions, 5734 flow [2023-12-09 15:06:55,314 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 181.83333333333334) internal successors, (2182), 12 states have internal predecessors, (2182), 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 15:06:55,314 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:55,314 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] [2023-12-09 15:06:55,321 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 15:06:55,520 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,SelfDestructingSolverStorable3 [2023-12-09 15:06:55,521 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:55,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:55,521 INFO L85 PathProgramCache]: Analyzing trace with hash -602725692, now seen corresponding path program 1 times [2023-12-09 15:06:55,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:55,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517540364] [2023-12-09 15:06:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:55,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:55,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517540364] [2023-12-09 15:06:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517540364] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:06:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130762627] [2023-12-09 15:06:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:55,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:55,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:06:55,853 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 15:06:55,872 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 15:06:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:55,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:06:55,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:06:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:56,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:06:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:56,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130762627] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:06:56,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:06:56,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2023-12-09 15:06:56,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030185931] [2023-12-09 15:06:56,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:56,635 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:06:56,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:56,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:06:56,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2023-12-09 15:06:56,639 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 262 [2023-12-09 15:06:56,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 686 transitions, 5734 flow. Second operand has 14 states, 14 states have (on average 158.57142857142858) internal successors, (2220), 14 states have internal predecessors, (2220), 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 15:06:56,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:56,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 262 [2023-12-09 15:06:56,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:57,615 INFO L124 PetriNetUnfolderBase]: 217/3180 cut-off events. [2023-12-09 15:06:57,615 INFO L125 PetriNetUnfolderBase]: For 2876/3786 co-relation queries the response was YES. [2023-12-09 15:06:57,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7399 conditions, 3180 events. 217/3180 cut-off events. For 2876/3786 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 27554 event pairs, 24 based on Foata normal form. 4/2854 useless extension candidates. Maximal degree in co-relation 1017. Up to 383 conditions per place. [2023-12-09 15:06:57,640 INFO L140 encePairwiseOnDemand]: 228/262 looper letters, 390 selfloop transitions, 35 changer transitions 151/719 dead transitions. [2023-12-09 15:06:57,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 719 transitions, 7228 flow [2023-12-09 15:06:57,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-09 15:06:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-12-09 15:06:57,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3908 transitions. [2023-12-09 15:06:57,648 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.621501272264631 [2023-12-09 15:06:57,648 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3908 transitions. [2023-12-09 15:06:57,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3908 transitions. [2023-12-09 15:06:57,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:57,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3908 transitions. [2023-12-09 15:06:57,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 162.83333333333334) internal successors, (3908), 24 states have internal predecessors, (3908), 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 15:06:57,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 262.0) internal successors, (6550), 25 states have internal predecessors, (6550), 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 15:06:57,664 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 262.0) internal successors, (6550), 25 states have internal predecessors, (6550), 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 15:06:57,666 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 133 predicate places. [2023-12-09 15:06:57,666 INFO L500 AbstractCegarLoop]: Abstraction has has 370 places, 719 transitions, 7228 flow [2023-12-09 15:06:57,667 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 158.57142857142858) internal successors, (2220), 14 states have internal predecessors, (2220), 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 15:06:57,667 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:57,667 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] [2023-12-09 15:06:57,679 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 15:06:57,873 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:57,874 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:57,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash -698167756, now seen corresponding path program 1 times [2023-12-09 15:06:57,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:57,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95218137] [2023-12-09 15:06:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:57,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:58,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:58,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95218137] [2023-12-09 15:06:58,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95218137] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:06:58,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336609531] [2023-12-09 15:06:58,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:58,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:58,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:06:58,144 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 15:06:58,155 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 15:06:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:58,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:06:58,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:06:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:58,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:06:58,794 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 15:06:58,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336609531] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:06:58,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:06:58,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2023-12-09 15:06:58,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129088354] [2023-12-09 15:06:58,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:58,795 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:06:58,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:58,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:06:58,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:06:58,799 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 262 [2023-12-09 15:06:58,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 719 transitions, 7228 flow. Second operand has 11 states, 11 states have (on average 198.9090909090909) internal successors, (2188), 11 states have internal predecessors, (2188), 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 15:06:58,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:58,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 262 [2023-12-09 15:06:58,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:59,715 INFO L124 PetriNetUnfolderBase]: 425/4401 cut-off events. [2023-12-09 15:06:59,715 INFO L125 PetriNetUnfolderBase]: For 5754/6722 co-relation queries the response was YES. [2023-12-09 15:06:59,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10438 conditions, 4401 events. 425/4401 cut-off events. For 5754/6722 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 43488 event pairs, 93 based on Foata normal form. 5/3945 useless extension candidates. Maximal degree in co-relation 1663. Up to 477 conditions per place. [2023-12-09 15:06:59,746 INFO L140 encePairwiseOnDemand]: 242/262 looper letters, 199 selfloop transitions, 36 changer transitions 151/775 dead transitions. [2023-12-09 15:06:59,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 775 transitions, 8268 flow [2023-12-09 15:06:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:06:59,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:06:59,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3250 transitions. [2023-12-09 15:06:59,750 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7752862595419847 [2023-12-09 15:06:59,750 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3250 transitions. [2023-12-09 15:06:59,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3250 transitions. [2023-12-09 15:06:59,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:59,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3250 transitions. [2023-12-09 15:06:59,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 203.125) internal successors, (3250), 16 states have internal predecessors, (3250), 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 15:06:59,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 262.0) internal successors, (4454), 17 states have internal predecessors, (4454), 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 15:06:59,760 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 262.0) internal successors, (4454), 17 states have internal predecessors, (4454), 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 15:06:59,761 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 148 predicate places. [2023-12-09 15:06:59,761 INFO L500 AbstractCegarLoop]: Abstraction has has 385 places, 775 transitions, 8268 flow [2023-12-09 15:06:59,762 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 198.9090909090909) internal successors, (2188), 11 states have internal predecessors, (2188), 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 15:06:59,762 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:59,762 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] [2023-12-09 15:06:59,768 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 15:06:59,967 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:59,968 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:59,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:59,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1686524933, now seen corresponding path program 1 times [2023-12-09 15:06:59,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:59,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204810958] [2023-12-09 15:06:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:59,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:07:00,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:00,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204810958] [2023-12-09 15:07:00,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204810958] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:00,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510336351] [2023-12-09 15:07:00,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:00,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:00,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:07:00,297 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 15:07:00,318 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 15:07:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:00,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:07:00,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:07:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:07:00,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:07:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:07:01,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510336351] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:01,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:07:01,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2023-12-09 15:07:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268293437] [2023-12-09 15:07:01,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:01,043 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:07:01,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:01,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:07:01,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:07:01,049 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 262 [2023-12-09 15:07:01,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 775 transitions, 8268 flow. Second operand has 11 states, 11 states have (on average 199.0) internal successors, (2189), 11 states have internal predecessors, (2189), 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 15:07:01,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:01,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 262 [2023-12-09 15:07:01,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:02,146 INFO L124 PetriNetUnfolderBase]: 673/6246 cut-off events. [2023-12-09 15:07:02,146 INFO L125 PetriNetUnfolderBase]: For 13322/14234 co-relation queries the response was YES. [2023-12-09 15:07:02,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15666 conditions, 6246 events. 673/6246 cut-off events. For 13322/14234 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 67074 event pairs, 207 based on Foata normal form. 16/5612 useless extension candidates. Maximal degree in co-relation 2833. Up to 654 conditions per place. [2023-12-09 15:07:02,193 INFO L140 encePairwiseOnDemand]: 242/262 looper letters, 243 selfloop transitions, 49 changer transitions 151/846 dead transitions. [2023-12-09 15:07:02,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 846 transitions, 9752 flow [2023-12-09 15:07:02,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:07:02,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:07:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3247 transitions. [2023-12-09 15:07:02,197 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7745706106870229 [2023-12-09 15:07:02,197 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3247 transitions. [2023-12-09 15:07:02,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3247 transitions. [2023-12-09 15:07:02,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:02,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3247 transitions. [2023-12-09 15:07:02,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 202.9375) internal successors, (3247), 16 states have internal predecessors, (3247), 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 15:07:02,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 262.0) internal successors, (4454), 17 states have internal predecessors, (4454), 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 15:07:02,209 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 262.0) internal successors, (4454), 17 states have internal predecessors, (4454), 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 15:07:02,209 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 163 predicate places. [2023-12-09 15:07:02,210 INFO L500 AbstractCegarLoop]: Abstraction has has 400 places, 846 transitions, 9752 flow [2023-12-09 15:07:02,210 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 199.0) internal successors, (2189), 11 states have internal predecessors, (2189), 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 15:07:02,210 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:02,210 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] [2023-12-09 15:07:02,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 15:07:02,417 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:02,417 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:02,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:02,418 INFO L85 PathProgramCache]: Analyzing trace with hash 574894673, now seen corresponding path program 1 times [2023-12-09 15:07:02,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:02,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114804229] [2023-12-09 15:07:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:02,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:02,547 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 15:07:02,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:02,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114804229] [2023-12-09 15:07:02,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114804229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:02,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:07:02,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:07:02,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693387533] [2023-12-09 15:07:02,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:02,549 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:07:02,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:02,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:07:02,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:07:02,551 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 262 [2023-12-09 15:07:02,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 846 transitions, 9752 flow. Second operand has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 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 15:07:02,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:02,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 262 [2023-12-09 15:07:02,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:03,268 INFO L124 PetriNetUnfolderBase]: 470/4237 cut-off events. [2023-12-09 15:07:03,268 INFO L125 PetriNetUnfolderBase]: For 12823/13623 co-relation queries the response was YES. [2023-12-09 15:07:03,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12131 conditions, 4237 events. 470/4237 cut-off events. For 12823/13623 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 40801 event pairs, 138 based on Foata normal form. 10/3840 useless extension candidates. Maximal degree in co-relation 2842. Up to 654 conditions per place. [2023-12-09 15:07:03,298 INFO L140 encePairwiseOnDemand]: 250/262 looper letters, 227 selfloop transitions, 13 changer transitions 147/714 dead transitions. [2023-12-09 15:07:03,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 714 transitions, 8540 flow [2023-12-09 15:07:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:07:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:07:03,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2057 transitions. [2023-12-09 15:07:03,301 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7851145038167939 [2023-12-09 15:07:03,301 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2057 transitions. [2023-12-09 15:07:03,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2057 transitions. [2023-12-09 15:07:03,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:03,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2057 transitions. [2023-12-09 15:07:03,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 205.7) internal successors, (2057), 10 states have internal predecessors, (2057), 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 15:07:03,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 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 15:07:03,307 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 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 15:07:03,309 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 170 predicate places. [2023-12-09 15:07:03,309 INFO L500 AbstractCegarLoop]: Abstraction has has 407 places, 714 transitions, 8540 flow [2023-12-09 15:07:03,309 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 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 15:07:03,309 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:03,310 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] [2023-12-09 15:07:03,310 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 15:07:03,310 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:03,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:03,310 INFO L85 PathProgramCache]: Analyzing trace with hash -750571872, now seen corresponding path program 1 times [2023-12-09 15:07:03,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:03,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551819709] [2023-12-09 15:07:03,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:03,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:03,420 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 15:07:03,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:03,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551819709] [2023-12-09 15:07:03,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551819709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:03,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:07:03,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:07:03,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562560411] [2023-12-09 15:07:03,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:03,421 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:07:03,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:03,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:07:03,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:07:03,423 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 262 [2023-12-09 15:07:03,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 714 transitions, 8540 flow. Second operand has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 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 15:07:03,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:03,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 262 [2023-12-09 15:07:03,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:03,999 INFO L124 PetriNetUnfolderBase]: 376/3370 cut-off events. [2023-12-09 15:07:03,999 INFO L125 PetriNetUnfolderBase]: For 12858/13942 co-relation queries the response was YES. [2023-12-09 15:07:04,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10833 conditions, 3370 events. 376/3370 cut-off events. For 12858/13942 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 29839 event pairs, 107 based on Foata normal form. 8/3045 useless extension candidates. Maximal degree in co-relation 3028. Up to 653 conditions per place. [2023-12-09 15:07:04,021 INFO L140 encePairwiseOnDemand]: 250/262 looper letters, 148 selfloop transitions, 8 changer transitions 216/640 dead transitions. [2023-12-09 15:07:04,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 640 transitions, 8032 flow [2023-12-09 15:07:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:07:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:07:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2055 transitions. [2023-12-09 15:07:04,024 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7843511450381679 [2023-12-09 15:07:04,024 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2055 transitions. [2023-12-09 15:07:04,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2055 transitions. [2023-12-09 15:07:04,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:04,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2055 transitions. [2023-12-09 15:07:04,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 205.5) internal successors, (2055), 10 states have internal predecessors, (2055), 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 15:07:04,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 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 15:07:04,031 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 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 15:07:04,032 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 176 predicate places. [2023-12-09 15:07:04,032 INFO L500 AbstractCegarLoop]: Abstraction has has 413 places, 640 transitions, 8032 flow [2023-12-09 15:07:04,032 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 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 15:07:04,032 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:04,032 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] [2023-12-09 15:07:04,032 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 15:07:04,033 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:04,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:04,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1225455081, now seen corresponding path program 1 times [2023-12-09 15:07:04,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:04,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566189576] [2023-12-09 15:07:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:04,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:04,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:04,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566189576] [2023-12-09 15:07:04,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566189576] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:04,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022182209] [2023-12-09 15:07:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:04,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:04,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:07:04,689 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 15:07:04,711 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 15:07:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:04,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-09 15:07:04,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:07:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:05,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:07:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:06,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022182209] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:07:06,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:07:06,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2023-12-09 15:07:06,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769053045] [2023-12-09 15:07:06,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:07:06,086 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-09 15:07:06,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:06,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-09 15:07:06,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1551, Unknown=0, NotChecked=0, Total=1806 [2023-12-09 15:07:06,093 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 262 [2023-12-09 15:07:06,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 640 transitions, 8032 flow. Second operand has 43 states, 43 states have (on average 154.95348837209303) internal successors, (6663), 43 states have internal predecessors, (6663), 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 15:07:06,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:06,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 262 [2023-12-09 15:07:06,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:08,499 INFO L124 PetriNetUnfolderBase]: 912/8128 cut-off events. [2023-12-09 15:07:08,500 INFO L125 PetriNetUnfolderBase]: For 36888/39659 co-relation queries the response was YES. [2023-12-09 15:07:08,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26774 conditions, 8128 events. 912/8128 cut-off events. For 36888/39659 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 91180 event pairs, 287 based on Foata normal form. 29/7345 useless extension candidates. Maximal degree in co-relation 3447. Up to 1653 conditions per place. [2023-12-09 15:07:08,547 INFO L140 encePairwiseOnDemand]: 226/262 looper letters, 588 selfloop transitions, 57 changer transitions 330/1130 dead transitions. [2023-12-09 15:07:08,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 1130 transitions, 17580 flow [2023-12-09 15:07:08,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-09 15:07:08,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-12-09 15:07:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7070 transitions. [2023-12-09 15:07:08,556 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5996607294317218 [2023-12-09 15:07:08,556 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7070 transitions. [2023-12-09 15:07:08,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7070 transitions. [2023-12-09 15:07:08,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:08,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7070 transitions. [2023-12-09 15:07:08,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 157.11111111111111) internal successors, (7070), 45 states have internal predecessors, (7070), 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 15:07:08,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 262.0) internal successors, (12052), 46 states have internal predecessors, (12052), 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 15:07:08,585 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 262.0) internal successors, (12052), 46 states have internal predecessors, (12052), 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 15:07:08,586 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 220 predicate places. [2023-12-09 15:07:08,586 INFO L500 AbstractCegarLoop]: Abstraction has has 457 places, 1130 transitions, 17580 flow [2023-12-09 15:07:08,588 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 154.95348837209303) internal successors, (6663), 43 states have internal predecessors, (6663), 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 15:07:08,588 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:08,588 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, 1, 1, 1, 1, 1] [2023-12-09 15:07:08,599 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 15:07:08,794 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:08,795 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:08,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:08,795 INFO L85 PathProgramCache]: Analyzing trace with hash -783176925, now seen corresponding path program 1 times [2023-12-09 15:07:08,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:08,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699641150] [2023-12-09 15:07:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:08,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:07:08,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:08,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699641150] [2023-12-09 15:07:08,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699641150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:08,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:07:08,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:07:08,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224653519] [2023-12-09 15:07:08,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:08,997 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:07:08,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:08,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:07:08,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:07:08,999 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 262 [2023-12-09 15:07:09,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 1130 transitions, 17580 flow. Second operand has 7 states, 7 states have (on average 202.85714285714286) internal successors, (1420), 7 states have internal predecessors, (1420), 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 15:07:09,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:09,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 262 [2023-12-09 15:07:09,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:10,086 INFO L124 PetriNetUnfolderBase]: 709/5973 cut-off events. [2023-12-09 15:07:10,086 INFO L125 PetriNetUnfolderBase]: For 37203/39903 co-relation queries the response was YES. [2023-12-09 15:07:10,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22644 conditions, 5973 events. 709/5973 cut-off events. For 37203/39903 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 60979 event pairs, 209 based on Foata normal form. 46/5460 useless extension candidates. Maximal degree in co-relation 4002. Up to 1349 conditions per place. [2023-12-09 15:07:10,119 INFO L140 encePairwiseOnDemand]: 250/262 looper letters, 286 selfloop transitions, 25 changer transitions 327/1002 dead transitions. [2023-12-09 15:07:10,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 1002 transitions, 16324 flow [2023-12-09 15:07:10,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:07:10,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:07:10,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2042 transitions. [2023-12-09 15:07:10,122 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7793893129770992 [2023-12-09 15:07:10,122 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2042 transitions. [2023-12-09 15:07:10,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2042 transitions. [2023-12-09 15:07:10,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:10,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2042 transitions. [2023-12-09 15:07:10,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 204.2) internal successors, (2042), 10 states have internal predecessors, (2042), 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 15:07:10,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 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 15:07:10,128 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 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 15:07:10,128 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 228 predicate places. [2023-12-09 15:07:10,128 INFO L500 AbstractCegarLoop]: Abstraction has has 465 places, 1002 transitions, 16324 flow [2023-12-09 15:07:10,129 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.85714285714286) internal successors, (1420), 7 states have internal predecessors, (1420), 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 15:07:10,129 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:10,129 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, 1, 1, 1, 1, 1] [2023-12-09 15:07:10,129 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-09 15:07:10,129 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:10,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:10,130 INFO L85 PathProgramCache]: Analyzing trace with hash -127747144, now seen corresponding path program 1 times [2023-12-09 15:07:10,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:10,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936814173] [2023-12-09 15:07:10,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:10,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:07:10,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:10,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936814173] [2023-12-09 15:07:10,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936814173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:10,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:07:10,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:07:10,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385370074] [2023-12-09 15:07:10,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:10,236 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:07:10,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:10,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:07:10,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:07:10,238 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 262 [2023-12-09 15:07:10,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 1002 transitions, 16324 flow. Second operand has 7 states, 7 states have (on average 202.85714285714286) internal successors, (1420), 7 states have internal predecessors, (1420), 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 15:07:10,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:10,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 262 [2023-12-09 15:07:10,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:11,247 INFO L124 PetriNetUnfolderBase]: 617/5244 cut-off events. [2023-12-09 15:07:11,248 INFO L125 PetriNetUnfolderBase]: For 37856/40794 co-relation queries the response was YES. [2023-12-09 15:07:11,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21574 conditions, 5244 events. 617/5244 cut-off events. For 37856/40794 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 51539 event pairs, 171 based on Foata normal form. 28/4780 useless extension candidates. Maximal degree in co-relation 4294. Up to 1204 conditions per place. [2023-12-09 15:07:11,277 INFO L140 encePairwiseOnDemand]: 250/262 looper letters, 230 selfloop transitions, 16 changer transitions 368/929 dead transitions. [2023-12-09 15:07:11,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 929 transitions, 15892 flow [2023-12-09 15:07:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:07:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:07:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2040 transitions. [2023-12-09 15:07:11,281 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7786259541984732 [2023-12-09 15:07:11,281 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2040 transitions. [2023-12-09 15:07:11,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2040 transitions. [2023-12-09 15:07:11,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:11,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2040 transitions. [2023-12-09 15:07:11,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 204.0) internal successors, (2040), 10 states have internal predecessors, (2040), 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 15:07:11,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 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 15:07:11,290 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 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 15:07:11,291 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 235 predicate places. [2023-12-09 15:07:11,291 INFO L500 AbstractCegarLoop]: Abstraction has has 472 places, 929 transitions, 15892 flow [2023-12-09 15:07:11,292 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.85714285714286) internal successors, (1420), 7 states have internal predecessors, (1420), 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 15:07:11,292 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:11,292 INFO L233 CegarLoopForPetriNet]: trace histogram [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] [2023-12-09 15:07:11,292 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-09 15:07:11,293 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:11,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:11,293 INFO L85 PathProgramCache]: Analyzing trace with hash -101835017, now seen corresponding path program 2 times [2023-12-09 15:07:11,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:11,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294740708] [2023-12-09 15:07:11,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:11,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:11,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:11,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294740708] [2023-12-09 15:07:11,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294740708] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:11,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918417476] [2023-12-09 15:07:11,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:07:11,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:11,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:07:11,799 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 15:07:11,801 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 15:07:11,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-09 15:07:11,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:07:11,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-09 15:07:11,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:07:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-09 15:07:12,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:07:12,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918417476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:12,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:07:12,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2023-12-09 15:07:12,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851952215] [2023-12-09 15:07:12,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:12,247 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:07:12,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:07:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2023-12-09 15:07:12,250 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 262 [2023-12-09 15:07:12,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 929 transitions, 15892 flow. Second operand has 12 states, 12 states have (on average 182.0) internal successors, (2184), 12 states have internal predecessors, (2184), 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 15:07:12,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:12,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 262 [2023-12-09 15:07:12,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:13,462 INFO L124 PetriNetUnfolderBase]: 615/5179 cut-off events. [2023-12-09 15:07:13,462 INFO L125 PetriNetUnfolderBase]: For 46136/49354 co-relation queries the response was YES. [2023-12-09 15:07:13,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22815 conditions, 5179 events. 615/5179 cut-off events. For 46136/49354 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 50825 event pairs, 160 based on Foata normal form. 45/4737 useless extension candidates. Maximal degree in co-relation 4626. Up to 1197 conditions per place. [2023-12-09 15:07:13,494 INFO L140 encePairwiseOnDemand]: 238/262 looper letters, 381 selfloop transitions, 30 changer transitions 412/1033 dead transitions. [2023-12-09 15:07:13,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1033 transitions, 19230 flow [2023-12-09 15:07:13,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:07:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:07:13,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3663 transitions. [2023-12-09 15:07:13,498 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6990458015267176 [2023-12-09 15:07:13,499 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3663 transitions. [2023-12-09 15:07:13,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3663 transitions. [2023-12-09 15:07:13,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:13,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3663 transitions. [2023-12-09 15:07:13,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 183.15) internal successors, (3663), 20 states have internal predecessors, (3663), 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 15:07:13,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 262.0) internal successors, (5502), 21 states have internal predecessors, (5502), 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 15:07:13,510 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 262.0) internal successors, (5502), 21 states have internal predecessors, (5502), 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 15:07:13,510 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 254 predicate places. [2023-12-09 15:07:13,510 INFO L500 AbstractCegarLoop]: Abstraction has has 491 places, 1033 transitions, 19230 flow [2023-12-09 15:07:13,511 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 182.0) internal successors, (2184), 12 states have internal predecessors, (2184), 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 15:07:13,511 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:13,511 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, 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 15:07:13,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 15:07:13,716 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:13,717 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:13,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:13,717 INFO L85 PathProgramCache]: Analyzing trace with hash -771624749, now seen corresponding path program 1 times [2023-12-09 15:07:13,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:13,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445512145] [2023-12-09 15:07:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:13,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:14,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:14,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445512145] [2023-12-09 15:07:14,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445512145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:14,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:07:14,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:07:14,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606670566] [2023-12-09 15:07:14,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:14,514 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:07:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:14,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:07:14,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:07:14,517 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-12-09 15:07:14,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1033 transitions, 19230 flow. Second operand has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 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 15:07:14,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:14,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-12-09 15:07:14,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:24,397 INFO L124 PetriNetUnfolderBase]: 14117/46462 cut-off events. [2023-12-09 15:07:24,397 INFO L125 PetriNetUnfolderBase]: For 206861/211276 co-relation queries the response was YES. [2023-12-09 15:07:24,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151270 conditions, 46462 events. 14117/46462 cut-off events. For 206861/211276 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 606259 event pairs, 5035 based on Foata normal form. 22/42923 useless extension candidates. Maximal degree in co-relation 42221. Up to 8239 conditions per place. [2023-12-09 15:07:24,749 INFO L140 encePairwiseOnDemand]: 231/262 looper letters, 500 selfloop transitions, 60 changer transitions 459/1410 dead transitions. [2023-12-09 15:07:24,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1410 transitions, 27211 flow [2023-12-09 15:07:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:07:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:07:24,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5491 transitions. [2023-12-09 15:07:24,756 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7226901816267439 [2023-12-09 15:07:24,756 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 5491 transitions. [2023-12-09 15:07:24,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 5491 transitions. [2023-12-09 15:07:24,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:24,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 5491 transitions. [2023-12-09 15:07:24,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 189.3448275862069) internal successors, (5491), 29 states have internal predecessors, (5491), 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 15:07:24,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 262.0) internal successors, (7860), 30 states have internal predecessors, (7860), 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 15:07:24,770 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 262.0) internal successors, (7860), 30 states have internal predecessors, (7860), 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 15:07:24,771 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 282 predicate places. [2023-12-09 15:07:24,771 INFO L500 AbstractCegarLoop]: Abstraction has has 519 places, 1410 transitions, 27211 flow [2023-12-09 15:07:24,772 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 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 15:07:24,772 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:24,772 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, 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 15:07:24,772 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-09 15:07:24,772 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:24,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:24,772 INFO L85 PathProgramCache]: Analyzing trace with hash -618836397, now seen corresponding path program 1 times [2023-12-09 15:07:24,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:24,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966505890] [2023-12-09 15:07:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:24,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:25,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:25,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966505890] [2023-12-09 15:07:25,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966505890] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:25,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991047597] [2023-12-09 15:07:25,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:25,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:25,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:07:25,481 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 15:07:25,483 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 15:07:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:25,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-09 15:07:25,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:07:25,943 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 15 treesize of output 1 [2023-12-09 15:07:26,152 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 15:07:26,210 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 15:07:26,405 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-09 15:07:26,405 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 26 treesize of output 10 [2023-12-09 15:07:26,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:07:26,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:07:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:26,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991047597] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:07:26,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:07:26,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 10] total 43 [2023-12-09 15:07:26,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062547419] [2023-12-09 15:07:26,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:07:26,770 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-09 15:07:26,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:26,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-09 15:07:26,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1617, Unknown=23, NotChecked=0, Total=1806 [2023-12-09 15:07:26,777 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 262 [2023-12-09 15:07:26,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 1410 transitions, 27211 flow. Second operand has 43 states, 43 states have (on average 164.97674418604652) internal successors, (7094), 43 states have internal predecessors, (7094), 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 15:07:26,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:26,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 262 [2023-12-09 15:07:26,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:43,042 INFO L124 PetriNetUnfolderBase]: 20528/60297 cut-off events. [2023-12-09 15:07:43,042 INFO L125 PetriNetUnfolderBase]: For 302122/309715 co-relation queries the response was YES. [2023-12-09 15:07:43,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241551 conditions, 60297 events. 20528/60297 cut-off events. For 302122/309715 co-relation queries the response was YES. Maximal size of possible extension queue 1818. Compared 780868 event pairs, 3175 based on Foata normal form. 97/55812 useless extension candidates. Maximal degree in co-relation 69325. Up to 14983 conditions per place. [2023-12-09 15:07:43,596 INFO L140 encePairwiseOnDemand]: 220/262 looper letters, 1215 selfloop transitions, 163 changer transitions 462/2191 dead transitions. [2023-12-09 15:07:43,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 2191 transitions, 44022 flow [2023-12-09 15:07:43,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-09 15:07:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-12-09 15:07:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7525 transitions. [2023-12-09 15:07:43,606 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6527585010409438 [2023-12-09 15:07:43,606 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7525 transitions. [2023-12-09 15:07:43,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7525 transitions. [2023-12-09 15:07:43,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:43,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7525 transitions. [2023-12-09 15:07:43,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 171.02272727272728) internal successors, (7525), 44 states have internal predecessors, (7525), 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 15:07:43,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 262.0) internal successors, (11790), 45 states have internal predecessors, (11790), 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 15:07:43,630 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 262.0) internal successors, (11790), 45 states have internal predecessors, (11790), 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 15:07:43,630 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 325 predicate places. [2023-12-09 15:07:43,630 INFO L500 AbstractCegarLoop]: Abstraction has has 562 places, 2191 transitions, 44022 flow [2023-12-09 15:07:43,631 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 164.97674418604652) internal successors, (7094), 43 states have internal predecessors, (7094), 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 15:07:43,631 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:43,632 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, 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 15:07:43,639 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 15:07:43,838 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,SelfDestructingSolverStorable14 [2023-12-09 15:07:43,839 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:43,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:43,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1573522323, now seen corresponding path program 2 times [2023-12-09 15:07:43,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:43,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934233069] [2023-12-09 15:07:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:43,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:44,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:44,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934233069] [2023-12-09 15:07:44,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934233069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:44,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:07:44,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:07:44,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423687865] [2023-12-09 15:07:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:44,705 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:07:44,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:07:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:07:44,708 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-12-09 15:07:44,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 2191 transitions, 44022 flow. Second operand has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 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 15:07:44,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:44,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-12-09 15:07:44,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:08:05,381 INFO L124 PetriNetUnfolderBase]: 22192/70533 cut-off events. [2023-12-09 15:08:05,381 INFO L125 PetriNetUnfolderBase]: For 353614/363261 co-relation queries the response was YES. [2023-12-09 15:08:05,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306201 conditions, 70533 events. 22192/70533 cut-off events. For 353614/363261 co-relation queries the response was YES. Maximal size of possible extension queue 2026. Compared 965722 event pairs, 3338 based on Foata normal form. 169/65471 useless extension candidates. Maximal degree in co-relation 87773. Up to 15412 conditions per place. [2023-12-09 15:08:05,965 INFO L140 encePairwiseOnDemand]: 232/262 looper letters, 1493 selfloop transitions, 95 changer transitions 462/2441 dead transitions. [2023-12-09 15:08:05,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 2441 transitions, 52761 flow [2023-12-09 15:08:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-09 15:08:05,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-12-09 15:08:05,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4546 transitions. [2023-12-09 15:08:05,969 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7229643765903307 [2023-12-09 15:08:05,969 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4546 transitions. [2023-12-09 15:08:05,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4546 transitions. [2023-12-09 15:08:05,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:08:05,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4546 transitions. [2023-12-09 15:08:05,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 189.41666666666666) internal successors, (4546), 24 states have internal predecessors, (4546), 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 15:08:05,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 262.0) internal successors, (6550), 25 states have internal predecessors, (6550), 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 15:08:05,980 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 262.0) internal successors, (6550), 25 states have internal predecessors, (6550), 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 15:08:05,980 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 348 predicate places. [2023-12-09 15:08:05,980 INFO L500 AbstractCegarLoop]: Abstraction has has 585 places, 2441 transitions, 52761 flow [2023-12-09 15:08:05,981 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 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 15:08:05,981 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:08:05,981 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, 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 15:08:05,981 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-09 15:08:05,981 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:08:05,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:08:05,982 INFO L85 PathProgramCache]: Analyzing trace with hash 638295047, now seen corresponding path program 3 times [2023-12-09 15:08:05,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:08:05,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029110336] [2023-12-09 15:08:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:08:05,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:08:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:08:06,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:08:06,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:08:06,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029110336] [2023-12-09 15:08:06,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029110336] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:08:06,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575047435] [2023-12-09 15:08:06,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:08:06,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:08:06,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:08:06,766 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:08:06,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:08:06,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:08:06,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:08:06,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-09 15:08:06,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:08:07,370 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 15 treesize of output 1 [2023-12-09 15:08:07,510 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 15:08:07,585 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 15:08:07,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:08:07,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:08:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:08:08,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575047435] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:08:08,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:08:08,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 50 [2023-12-09 15:08:08,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752239527] [2023-12-09 15:08:08,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:08:08,202 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-09 15:08:08,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:08:08,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-09 15:08:08,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2170, Unknown=31, NotChecked=0, Total=2450 [2023-12-09 15:08:08,207 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 262 [2023-12-09 15:08:08,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 2441 transitions, 52761 flow. Second operand has 50 states, 50 states have (on average 164.54) internal successors, (8227), 50 states have internal predecessors, (8227), 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 15:08:08,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:08:08,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 262 [2023-12-09 15:08:08,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:08:37,941 INFO L124 PetriNetUnfolderBase]: 27340/84114 cut-off events. [2023-12-09 15:08:37,941 INFO L125 PetriNetUnfolderBase]: For 443694/455256 co-relation queries the response was YES. [2023-12-09 15:08:38,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410887 conditions, 84114 events. 27340/84114 cut-off events. For 443694/455256 co-relation queries the response was YES. Maximal size of possible extension queue 2462. Compared 1164375 event pairs, 2073 based on Foata normal form. 225/78141 useless extension candidates. Maximal degree in co-relation 120393. Up to 17213 conditions per place. [2023-12-09 15:08:38,737 INFO L140 encePairwiseOnDemand]: 221/262 looper letters, 2150 selfloop transitions, 294 changer transitions 462/3257 dead transitions. [2023-12-09 15:08:38,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 3257 transitions, 73767 flow [2023-12-09 15:08:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-09 15:08:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-12-09 15:08:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 7340 transitions. [2023-12-09 15:08:38,746 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6515178412923842 [2023-12-09 15:08:38,747 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 7340 transitions. [2023-12-09 15:08:38,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 7340 transitions. [2023-12-09 15:08:38,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:08:38,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 7340 transitions. [2023-12-09 15:08:38,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 170.69767441860466) internal successors, (7340), 43 states have internal predecessors, (7340), 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 15:08:38,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 262.0) internal successors, (11528), 44 states have internal predecessors, (11528), 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 15:08:38,763 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 262.0) internal successors, (11528), 44 states have internal predecessors, (11528), 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 15:08:38,764 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 390 predicate places. [2023-12-09 15:08:38,764 INFO L500 AbstractCegarLoop]: Abstraction has has 627 places, 3257 transitions, 73767 flow [2023-12-09 15:08:38,765 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 164.54) internal successors, (8227), 50 states have internal predecessors, (8227), 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 15:08:38,765 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:08:38,765 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, 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 15:08:38,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 15:08:38,972 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-09 15:08:38,972 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:08:38,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:08:38,973 INFO L85 PathProgramCache]: Analyzing trace with hash -159187021, now seen corresponding path program 4 times [2023-12-09 15:08:38,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:08:38,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657386666] [2023-12-09 15:08:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:08:38,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:08:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:08:39,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:08:39,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:08:39,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657386666] [2023-12-09 15:08:39,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657386666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:08:39,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:08:39,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:08:39,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158893138] [2023-12-09 15:08:39,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:08:39,792 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:08:39,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:08:39,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:08:39,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:08:39,795 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-12-09 15:08:39,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 3257 transitions, 73767 flow. Second operand has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 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 15:08:39,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:08:39,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-12-09 15:08:39,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:09:17,474 INFO L124 PetriNetUnfolderBase]: 28582/86172 cut-off events. [2023-12-09 15:09:17,475 INFO L125 PetriNetUnfolderBase]: For 496947/514455 co-relation queries the response was YES. [2023-12-09 15:09:17,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473350 conditions, 86172 events. 28582/86172 cut-off events. For 496947/514455 co-relation queries the response was YES. Maximal size of possible extension queue 2543. Compared 1186806 event pairs, 2159 based on Foata normal form. 220/80023 useless extension candidates. Maximal degree in co-relation 139290. Up to 21416 conditions per place. [2023-12-09 15:09:18,453 INFO L140 encePairwiseOnDemand]: 230/262 looper letters, 2458 selfloop transitions, 184 changer transitions 462/3495 dead transitions. [2023-12-09 15:09:18,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 3495 transitions, 83805 flow [2023-12-09 15:09:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-09 15:09:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-12-09 15:09:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 5299 transitions. [2023-12-09 15:09:18,457 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7223282442748091 [2023-12-09 15:09:18,457 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 5299 transitions. [2023-12-09 15:09:18,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 5299 transitions. [2023-12-09 15:09:18,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:09:18,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 5299 transitions. [2023-12-09 15:09:18,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 189.25) internal successors, (5299), 28 states have internal predecessors, (5299), 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 15:09:18,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 262.0) internal successors, (7598), 29 states have internal predecessors, (7598), 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 15:09:18,469 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 262.0) internal successors, (7598), 29 states have internal predecessors, (7598), 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 15:09:18,469 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 417 predicate places. [2023-12-09 15:09:18,469 INFO L500 AbstractCegarLoop]: Abstraction has has 654 places, 3495 transitions, 83805 flow [2023-12-09 15:09:18,470 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 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 15:09:18,470 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:09:18,470 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, 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 15:09:18,470 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-09 15:09:18,470 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:09:18,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:09:18,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1902864595, now seen corresponding path program 5 times [2023-12-09 15:09:18,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:09:18,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501050072] [2023-12-09 15:09:18,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:09:18,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:09:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:09:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:09:19,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:09:19,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501050072] [2023-12-09 15:09:19,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501050072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:09:19,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:09:19,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-09 15:09:19,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230422266] [2023-12-09 15:09:19,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:09:19,189 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-09 15:09:19,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:09:19,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-09 15:09:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-09 15:09:19,193 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-12-09 15:09:19,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 3495 transitions, 83805 flow. Second operand has 21 states, 21 states have (on average 182.57142857142858) internal successors, (3834), 21 states have internal predecessors, (3834), 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 15:09:19,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:09:19,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-12-09 15:09:19,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:09:59,667 INFO L124 PetriNetUnfolderBase]: 28654/86856 cut-off events. [2023-12-09 15:09:59,667 INFO L125 PetriNetUnfolderBase]: For 529585/550533 co-relation queries the response was YES. [2023-12-09 15:10:00,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522638 conditions, 86856 events. 28654/86856 cut-off events. For 529585/550533 co-relation queries the response was YES. Maximal size of possible extension queue 2571. Compared 1199484 event pairs, 1452 based on Foata normal form. 164/80591 useless extension candidates. Maximal degree in co-relation 154787. Up to 22475 conditions per place. [2023-12-09 15:10:00,712 INFO L140 encePairwiseOnDemand]: 229/262 looper letters, 2472 selfloop transitions, 191 changer transitions 462/3516 dead transitions. [2023-12-09 15:10:00,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 3516 transitions, 89867 flow [2023-12-09 15:10:00,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-09 15:10:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-12-09 15:10:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4727 transitions. [2023-12-09 15:10:00,715 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7216793893129771 [2023-12-09 15:10:00,715 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4727 transitions. [2023-12-09 15:10:00,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4727 transitions. [2023-12-09 15:10:00,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:10:00,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4727 transitions. [2023-12-09 15:10:00,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 189.08) internal successors, (4727), 25 states have internal predecessors, (4727), 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 15:10:00,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 262.0) internal successors, (6812), 26 states have internal predecessors, (6812), 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 15:10:00,725 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 262.0) internal successors, (6812), 26 states have internal predecessors, (6812), 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 15:10:00,726 INFO L308 CegarLoopForPetriNet]: 237 programPoint places, 441 predicate places. [2023-12-09 15:10:00,726 INFO L500 AbstractCegarLoop]: Abstraction has has 678 places, 3516 transitions, 89867 flow [2023-12-09 15:10:00,727 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 182.57142857142858) internal successors, (3834), 21 states have internal predecessors, (3834), 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 15:10:00,727 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:10:00,727 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, 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 15:10:00,727 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-09 15:10:00,727 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:10:00,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:10:00,728 INFO L85 PathProgramCache]: Analyzing trace with hash 566883483, now seen corresponding path program 6 times [2023-12-09 15:10:00,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:10:00,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563629362] [2023-12-09 15:10:00,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:10:00,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:10:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:10:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:10:01,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:10:01,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563629362] [2023-12-09 15:10:01,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563629362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:10:01,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:10:01,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-09 15:10:01,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537146978] [2023-12-09 15:10:01,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:10:01,454 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-09 15:10:01,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:10:01,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-09 15:10:01,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-09 15:10:01,456 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-12-09 15:10:01,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 3516 transitions, 89867 flow. Second operand has 21 states, 21 states have (on average 182.57142857142858) internal successors, (3834), 21 states have internal predecessors, (3834), 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 15:10:01,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:10:01,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-12-09 15:10:01,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:10:33,800 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 15:10:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-09 15:10:34,175 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:10:34,175 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-09 15:10:34,175 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 180/262 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 466290 conditions, 56439 events (25512/56438 cut-off events. For 388904/395242 co-relation queries the response was YES. Maximal size of possible extension queue 2582. Compared 695937 event pairs, 1645 based on Foata normal form. 43/53966 useless extension candidates. Maximal degree in co-relation 156149. Up to 20020 conditions per place.). [2023-12-09 15:10:34,179 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:10:34,180 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:10:34,181 INFO L457 BasicCegarLoop]: Path program histogram: [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:10:34,186 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:10:34,187 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:10:34,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:10:34 BasicIcfg [2023-12-09 15:10:34,192 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:10:34,193 INFO L158 Benchmark]: Toolchain (without parser) took 228976.28ms. Allocated memory was 192.9MB in the beginning and 7.3GB in the end (delta: 7.1GB). Free memory was 141.3MB in the beginning and 3.8GB in the end (delta: -3.7GB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. [2023-12-09 15:10:34,193 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 192.9MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:10:34,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.19ms. Allocated memory is still 192.9MB. Free memory was 141.3MB in the beginning and 129.3MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:10:34,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.07ms. Allocated memory is still 192.9MB. Free memory was 129.3MB in the beginning and 127.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:10:34,195 INFO L158 Benchmark]: Boogie Preprocessor took 34.99ms. Allocated memory is still 192.9MB. Free memory was 127.0MB in the beginning and 125.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:10:34,195 INFO L158 Benchmark]: RCFGBuilder took 596.27ms. Allocated memory is still 192.9MB. Free memory was 124.9MB in the beginning and 103.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-09 15:10:34,195 INFO L158 Benchmark]: TraceAbstraction took 228064.18ms. Allocated memory was 311.4MB in the beginning and 7.3GB in the end (delta: 7.0GB). Free memory was 278.2MB in the beginning and 3.8GB in the end (delta: -3.6GB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. [2023-12-09 15:10:34,197 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 192.9MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 216.19ms. Allocated memory is still 192.9MB. Free memory was 141.3MB in the beginning and 129.3MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.07ms. Allocated memory is still 192.9MB. Free memory was 129.3MB in the beginning and 127.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.99ms. Allocated memory is still 192.9MB. Free memory was 127.0MB in the beginning and 125.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 596.27ms. Allocated memory is still 192.9MB. Free memory was 124.9MB in the beginning and 103.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 228064.18ms. Allocated memory was 311.4MB in the beginning and 7.3GB in the end (delta: 7.0GB). Free memory was 278.2MB in the beginning and 3.8GB in the end (delta: -3.6GB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 180/262 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 466290 conditions, 56439 events (25512/56438 cut-off events. For 388904/395242 co-relation queries the response was YES. Maximal size of possible extension queue 2582. Compared 695937 event pairs, 1645 based on Foata normal form. 43/53966 useless extension candidates. Maximal degree in co-relation 156149. Up to 20020 conditions per place.). - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 180/262 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 466290 conditions, 56439 events (25512/56438 cut-off events. For 388904/395242 co-relation queries the response was YES. Maximal size of possible extension queue 2582. Compared 695937 event pairs, 1645 based on Foata normal form. 43/53966 useless extension candidates. Maximal degree in co-relation 156149. Up to 20020 conditions per place.). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 180/262 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 466290 conditions, 56439 events (25512/56438 cut-off events. For 388904/395242 co-relation queries the response was YES. Maximal size of possible extension queue 2582. Compared 695937 event pairs, 1645 based on Foata normal form. 43/53966 useless extension candidates. Maximal degree in co-relation 156149. Up to 20020 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 338 locations, 3 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: 227.9s, OverallIterations: 20, TraceHistogramMax: 2, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 206.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7315 SdHoareTripleChecker+Valid, 7.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7315 mSDsluCounter, 15183 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13620 mSDsCounter, 269 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16888 IncrementalHoareTripleChecker+Invalid, 17157 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 269 mSolverCounterUnsat, 1563 mSDtfsCounter, 16888 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3236 GetRequests, 2419 SyntacticMatches, 4 SemanticMatches, 813 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9545 ImplicationChecksByTransitivity, 12.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89867occurred in iteration=19, InterpolantAutomatonStates: 468, 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, 0.8s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 4693 NumberOfCodeBlocks, 4643 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 5767 ConstructedInterpolants, 27 QuantifiedInterpolants, 27447 SizeOfPredicates, 128 NumberOfNonLiveVariables, 2991 ConjunctsInSsa, 218 ConjunctsInUnsatCore, 36 InterpolantComputations, 17 PerfectInterpolantSequences, 58/96 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 [2023-12-09 15:10:34,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 !ENTRY org.eclipse.osgi 4 0 2023-12-09 15:10:34.460 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48f2fe82/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48f2fe82/.metadata/.log.