/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/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:27:51,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:27:51,172 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 15:27:51,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:27:51,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:27:51,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:27:51,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:27:51,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:27:51,204 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:27:51,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:27:51,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:27:51,208 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:27:51,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:27:51,209 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:27:51,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:27:51,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:27:51,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:27:51,210 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:27:51,210 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:27:51,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:27:51,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:27:51,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:27:51,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:27:51,211 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:27:51,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:27:51,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:27:51,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:27:51,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:27:51,213 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:27:51,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:27:51,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:27:51,213 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:27:51,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:27:51,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:27:51,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:27:51,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:27:51,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:27:51,405 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:27:51,405 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:27:51,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-12-09 15:27:52,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:27:52,672 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:27:52,672 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-12-09 15:27:52,678 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dde915cb9/83456554085f4ad496272f940deea617/FLAGa7100f5fa [2023-12-09 15:27:52,688 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dde915cb9/83456554085f4ad496272f940deea617 [2023-12-09 15:27:52,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:27:52,690 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:27:52,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:27:52,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:27:52,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:27:52,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:27:52" (1/1) ... [2023-12-09 15:27:52,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ad33a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52, skipping insertion in model container [2023-12-09 15:27:52,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:27:52" (1/1) ... [2023-12-09 15:27:52,712 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:27:52,841 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/popl20-more-min-le-max.wvr.c[2525,2538] [2023-12-09 15:27:52,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:27:52,857 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:27:52,879 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/popl20-more-min-le-max.wvr.c[2525,2538] [2023-12-09 15:27:52,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:27:52,887 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:27:52,887 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:27:52,892 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:27:52,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52 WrapperNode [2023-12-09 15:27:52,893 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:27:52,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:27:52,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:27:52,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:27:52,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52" (1/1) ... [2023-12-09 15:27:52,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52" (1/1) ... [2023-12-09 15:27:52,920 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2023-12-09 15:27:52,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:27:52,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:27:52,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:27:52,921 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:27:52,933 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52" (1/1) ... [2023-12-09 15:27:52,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52" (1/1) ... [2023-12-09 15:27:52,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52" (1/1) ... [2023-12-09 15:27:52,936 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52" (1/1) ... [2023-12-09 15:27:52,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52" (1/1) ... [2023-12-09 15:27:52,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52" (1/1) ... [2023-12-09 15:27:52,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52" (1/1) ... [2023-12-09 15:27:52,944 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52" (1/1) ... [2023-12-09 15:27:52,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:27:52,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:27:52,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:27:52,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:27:52,947 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52" (1/1) ... [2023-12-09 15:27:52,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:27:52,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:27:52,989 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 15:27:53,010 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 15:27:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:27:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:27:53,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:27:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:27:53,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:27:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-09 15:27:53,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-09 15:27:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:27:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:27:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:27:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:27:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:27:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:27:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:27:53,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:27:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:27:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:27:53,032 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 15:27:53,133 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:27:53,134 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:27:53,311 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:27:53,347 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:27:53,347 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-09 15:27:53,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:27:53 BoogieIcfgContainer [2023-12-09 15:27:53,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:27:53,350 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:27:53,350 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:27:53,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:27:53,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:27:52" (1/3) ... [2023-12-09 15:27:53,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cec8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:27:53, skipping insertion in model container [2023-12-09 15:27:53,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:52" (2/3) ... [2023-12-09 15:27:53,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cec8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:27:53, skipping insertion in model container [2023-12-09 15:27:53,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:27:53" (3/3) ... [2023-12-09 15:27:53,354 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-12-09 15:27:53,368 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:27:53,368 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:27:53,368 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:27:53,454 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-09 15:27:53,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 153 transitions, 327 flow [2023-12-09 15:27:53,536 INFO L124 PetriNetUnfolderBase]: 10/150 cut-off events. [2023-12-09 15:27:53,536 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-09 15:27:53,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 10/150 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-12-09 15:27:53,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 153 transitions, 327 flow [2023-12-09 15:27:53,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 139 transitions, 296 flow [2023-12-09 15:27:53,549 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:27:53,554 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;@432ea049, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:27:53,554 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 15:27:53,575 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:27:53,575 INFO L124 PetriNetUnfolderBase]: 10/138 cut-off events. [2023-12-09 15:27:53,575 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-09 15:27:53,575 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:53,576 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] [2023-12-09 15:27:53,576 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:27:53,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:53,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1625881648, now seen corresponding path program 1 times [2023-12-09 15:27:53,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:53,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424287599] [2023-12-09 15:27:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:53,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:54,099 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 15:27:54,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:54,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424287599] [2023-12-09 15:27:54,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424287599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:27:54,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:27:54,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:27:54,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586509720] [2023-12-09 15:27:54,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:27:54,109 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:27:54,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:54,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:27:54,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:27:54,144 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 153 [2023-12-09 15:27:54,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 139 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 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 15:27:54,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:54,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 153 [2023-12-09 15:27:54,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:54,354 INFO L124 PetriNetUnfolderBase]: 171/491 cut-off events. [2023-12-09 15:27:54,354 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-12-09 15:27:54,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 491 events. 171/491 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2243 event pairs, 62 based on Foata normal form. 5/414 useless extension candidates. Maximal degree in co-relation 748. Up to 188 conditions per place. [2023-12-09 15:27:54,361 INFO L140 encePairwiseOnDemand]: 138/153 looper letters, 47 selfloop transitions, 5 changer transitions 4/141 dead transitions. [2023-12-09 15:27:54,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 141 transitions, 418 flow [2023-12-09 15:27:54,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:27:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:27:54,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 752 transitions. [2023-12-09 15:27:54,378 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7021475256769374 [2023-12-09 15:27:54,379 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 752 transitions. [2023-12-09 15:27:54,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 752 transitions. [2023-12-09 15:27:54,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:54,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 752 transitions. [2023-12-09 15:27:54,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 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 15:27:54,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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 15:27:54,392 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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 15:27:54,395 INFO L308 CegarLoopForPetriNet]: 139 programPoint places, 6 predicate places. [2023-12-09 15:27:54,395 INFO L500 AbstractCegarLoop]: Abstraction has has 145 places, 141 transitions, 418 flow [2023-12-09 15:27:54,395 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 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 15:27:54,396 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:54,396 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] [2023-12-09 15:27:54,396 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:27:54,397 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:27:54,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:54,398 INFO L85 PathProgramCache]: Analyzing trace with hash -158091300, now seen corresponding path program 1 times [2023-12-09 15:27:54,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:54,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254632257] [2023-12-09 15:27:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:54,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:54,593 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 15:27:54,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:54,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254632257] [2023-12-09 15:27:54,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254632257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:27:54,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:27:54,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:27:54,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478626176] [2023-12-09 15:27:54,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:27:54,595 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:27:54,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:54,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:27:54,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:27:54,598 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 153 [2023-12-09 15:27:54,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 141 transitions, 418 flow. Second operand has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 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 15:27:54,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:54,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 153 [2023-12-09 15:27:54,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:54,801 INFO L124 PetriNetUnfolderBase]: 197/639 cut-off events. [2023-12-09 15:27:54,801 INFO L125 PetriNetUnfolderBase]: For 232/422 co-relation queries the response was YES. [2023-12-09 15:27:54,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1491 conditions, 639 events. 197/639 cut-off events. For 232/422 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2990 event pairs, 68 based on Foata normal form. 13/552 useless extension candidates. Maximal degree in co-relation 1012. Up to 278 conditions per place. [2023-12-09 15:27:54,805 INFO L140 encePairwiseOnDemand]: 141/153 looper letters, 39 selfloop transitions, 8 changer transitions 22/163 dead transitions. [2023-12-09 15:27:54,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 163 transitions, 638 flow [2023-12-09 15:27:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:27:54,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:27:54,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1167 transitions. [2023-12-09 15:27:54,808 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7627450980392156 [2023-12-09 15:27:54,808 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1167 transitions. [2023-12-09 15:27:54,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1167 transitions. [2023-12-09 15:27:54,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:54,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1167 transitions. [2023-12-09 15:27:54,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.7) internal successors, (1167), 10 states have internal predecessors, (1167), 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 15:27:54,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 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 15:27:54,813 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 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 15:27:54,814 INFO L308 CegarLoopForPetriNet]: 139 programPoint places, 15 predicate places. [2023-12-09 15:27:54,814 INFO L500 AbstractCegarLoop]: Abstraction has has 154 places, 163 transitions, 638 flow [2023-12-09 15:27:54,815 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 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 15:27:54,815 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:54,815 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] [2023-12-09 15:27:54,816 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:27:54,816 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:27:54,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:54,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1088834412, now seen corresponding path program 1 times [2023-12-09 15:27:54,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:54,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973592678] [2023-12-09 15:27:54,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:54,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:54,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:54,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:54,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973592678] [2023-12-09 15:27:54,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973592678] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:54,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868218380] [2023-12-09 15:27:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:54,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:54,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:27:54,989 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 15:27:55,033 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 15:27:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:55,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-09 15:27:55,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:27:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:55,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:27:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:55,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868218380] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:55,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:27:55,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2023-12-09 15:27:55,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655494886] [2023-12-09 15:27:55,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:27:55,492 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:27:55,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:55,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:27:55,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:27:55,494 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 153 [2023-12-09 15:27:55,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 163 transitions, 638 flow. Second operand has 7 states, 7 states have (on average 115.28571428571429) internal successors, (807), 7 states have internal predecessors, (807), 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 15:27:55,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:55,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 153 [2023-12-09 15:27:55,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:55,662 INFO L124 PetriNetUnfolderBase]: 285/892 cut-off events. [2023-12-09 15:27:55,662 INFO L125 PetriNetUnfolderBase]: For 787/1349 co-relation queries the response was YES. [2023-12-09 15:27:55,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2532 conditions, 892 events. 285/892 cut-off events. For 787/1349 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5224 event pairs, 109 based on Foata normal form. 1/804 useless extension candidates. Maximal degree in co-relation 1850. Up to 387 conditions per place. [2023-12-09 15:27:55,667 INFO L140 encePairwiseOnDemand]: 142/153 looper letters, 47 selfloop transitions, 8 changer transitions 29/180 dead transitions. [2023-12-09 15:27:55,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 180 transitions, 900 flow [2023-12-09 15:27:55,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:27:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:27:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 948 transitions. [2023-12-09 15:27:55,669 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7745098039215687 [2023-12-09 15:27:55,669 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 948 transitions. [2023-12-09 15:27:55,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 948 transitions. [2023-12-09 15:27:55,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:55,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 948 transitions. [2023-12-09 15:27:55,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 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 15:27:55,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 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 15:27:55,673 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 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 15:27:55,674 INFO L308 CegarLoopForPetriNet]: 139 programPoint places, 22 predicate places. [2023-12-09 15:27:55,674 INFO L500 AbstractCegarLoop]: Abstraction has has 161 places, 180 transitions, 900 flow [2023-12-09 15:27:55,674 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.28571428571429) internal successors, (807), 7 states have internal predecessors, (807), 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 15:27:55,674 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:55,674 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] [2023-12-09 15:27:55,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 15:27:55,879 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 15:27:55,879 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:27:55,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:55,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1351986702, now seen corresponding path program 1 times [2023-12-09 15:27:55,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:55,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494006439] [2023-12-09 15:27:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:55,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:56,311 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 15:27:56,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:56,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494006439] [2023-12-09 15:27:56,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494006439] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:56,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412381763] [2023-12-09 15:27:56,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:56,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:56,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:27:56,330 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 15:27:56,348 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 15:27:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:56,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-09 15:27:56,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:27:56,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-12-09 15:27:56,533 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-09 15:27:56,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-09 15:27:56,604 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:27:56,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-12-09 15:27:56,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 15:27:56,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:27:56,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-12-09 15:27:56,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-12-09 15:27:57,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-09 15:27:57,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:57,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:27:57,858 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 15:27:57,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412381763] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:57,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:27:57,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 23] total 33 [2023-12-09 15:27:57,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64949248] [2023-12-09 15:27:57,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:27:57,859 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:27:57,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:57,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:27:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=924, Unknown=1, NotChecked=0, Total=1056 [2023-12-09 15:27:57,861 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 153 [2023-12-09 15:27:57,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 180 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 79.5) internal successors, (795), 10 states have internal predecessors, (795), 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 15:27:57,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:57,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 153 [2023-12-09 15:27:57,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:59,334 INFO L124 PetriNetUnfolderBase]: 4085/7646 cut-off events. [2023-12-09 15:27:59,334 INFO L125 PetriNetUnfolderBase]: For 6811/6841 co-relation queries the response was YES. [2023-12-09 15:27:59,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25218 conditions, 7646 events. 4085/7646 cut-off events. For 6811/6841 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 57498 event pairs, 641 based on Foata normal form. 0/7066 useless extension candidates. Maximal degree in co-relation 20208. Up to 3064 conditions per place. [2023-12-09 15:27:59,385 INFO L140 encePairwiseOnDemand]: 137/153 looper letters, 229 selfloop transitions, 22 changer transitions 130/447 dead transitions. [2023-12-09 15:27:59,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 447 transitions, 3502 flow [2023-12-09 15:27:59,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-09 15:27:59,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-12-09 15:27:59,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1315 transitions. [2023-12-09 15:27:59,388 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5729847494553377 [2023-12-09 15:27:59,388 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1315 transitions. [2023-12-09 15:27:59,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1315 transitions. [2023-12-09 15:27:59,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:59,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1315 transitions. [2023-12-09 15:27:59,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 87.66666666666667) internal successors, (1315), 15 states have internal predecessors, (1315), 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 15:27:59,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 153.0) internal successors, (2448), 16 states have internal predecessors, (2448), 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 15:27:59,394 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 153.0) internal successors, (2448), 16 states have internal predecessors, (2448), 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 15:27:59,396 INFO L308 CegarLoopForPetriNet]: 139 programPoint places, 36 predicate places. [2023-12-09 15:27:59,396 INFO L500 AbstractCegarLoop]: Abstraction has has 175 places, 447 transitions, 3502 flow [2023-12-09 15:27:59,396 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 79.5) internal successors, (795), 10 states have internal predecessors, (795), 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 15:27:59,396 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:59,397 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] [2023-12-09 15:27:59,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-09 15:27:59,602 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 15:27:59,602 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:27:59,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:59,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1113602814, now seen corresponding path program 2 times [2023-12-09 15:27:59,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:59,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459946263] [2023-12-09 15:27:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:59,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:59,979 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 15:27:59,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:59,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459946263] [2023-12-09 15:27:59,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459946263] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:59,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740650601] [2023-12-09 15:27:59,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:27:59,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:59,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:00,005 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 15:28:00,006 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 15:28:00,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:28:00,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:00,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-09 15:28:00,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:00,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-09 15:28:00,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 20 [2023-12-09 15:28:00,361 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 15:28:00,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:00,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2023-12-09 15:28:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-09 15:28:00,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740650601] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:00,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:28:00,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 12] total 19 [2023-12-09 15:28:00,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138982632] [2023-12-09 15:28:00,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:00,556 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:28:00,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:00,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:28:00,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:28:00,558 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 153 [2023-12-09 15:28:00,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 447 transitions, 3502 flow. Second operand has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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 15:28:00,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:00,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 153 [2023-12-09 15:28:00,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:01,458 INFO L124 PetriNetUnfolderBase]: 4085/7679 cut-off events. [2023-12-09 15:28:01,458 INFO L125 PetriNetUnfolderBase]: For 9800/10139 co-relation queries the response was YES. [2023-12-09 15:28:01,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28257 conditions, 7679 events. 4085/7679 cut-off events. For 9800/10139 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 57419 event pairs, 490 based on Foata normal form. 31/7159 useless extension candidates. Maximal degree in co-relation 22537. Up to 3064 conditions per place. [2023-12-09 15:28:01,489 INFO L140 encePairwiseOnDemand]: 139/153 looper letters, 0 selfloop transitions, 0 changer transitions 499/499 dead transitions. [2023-12-09 15:28:01,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 499 transitions, 4571 flow [2023-12-09 15:28:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 15:28:01,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 15:28:01,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1181 transitions. [2023-12-09 15:28:01,492 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5937657114127702 [2023-12-09 15:28:01,493 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1181 transitions. [2023-12-09 15:28:01,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1181 transitions. [2023-12-09 15:28:01,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:01,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1181 transitions. [2023-12-09 15:28:01,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 90.84615384615384) internal successors, (1181), 13 states have internal predecessors, (1181), 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 15:28:01,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 153.0) internal successors, (2142), 14 states have internal predecessors, (2142), 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 15:28:01,500 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 153.0) internal successors, (2142), 14 states have internal predecessors, (2142), 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 15:28:01,503 INFO L308 CegarLoopForPetriNet]: 139 programPoint places, 44 predicate places. [2023-12-09 15:28:01,503 INFO L500 AbstractCegarLoop]: Abstraction has has 183 places, 499 transitions, 4571 flow [2023-12-09 15:28:01,503 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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 15:28:01,510 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/popl20-more-min-le-max.wvr.c_BEv2_AllErrorsAtOnce [2023-12-09 15:28:01,536 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-12-09 15:28:01,536 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-12-09 15:28:01,536 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-12-09 15:28:01,536 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-12-09 15:28:01,545 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 15:28:01,743 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 15:28:01,744 INFO L457 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-12-09 15:28:01,746 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:28:01,746 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:28:01,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:28:01 BasicIcfg [2023-12-09 15:28:01,754 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:28:01,755 INFO L158 Benchmark]: Toolchain (without parser) took 9064.41ms. Allocated memory was 176.2MB in the beginning and 519.0MB in the end (delta: 342.9MB). Free memory was 131.6MB in the beginning and 234.8MB in the end (delta: -103.2MB). Peak memory consumption was 238.0MB. Max. memory is 8.0GB. [2023-12-09 15:28:01,755 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory was 134.6MB in the beginning and 134.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:28:01,755 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.84ms. Allocated memory is still 176.2MB. Free memory was 131.3MB in the beginning and 119.6MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:28:01,755 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.73ms. Allocated memory is still 176.2MB. Free memory was 119.6MB in the beginning and 117.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:28:01,756 INFO L158 Benchmark]: Boogie Preprocessor took 25.51ms. Allocated memory is still 176.2MB. Free memory was 117.6MB in the beginning and 115.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:28:01,756 INFO L158 Benchmark]: RCFGBuilder took 402.02ms. Allocated memory is still 176.2MB. Free memory was 115.9MB in the beginning and 95.6MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-09 15:28:01,756 INFO L158 Benchmark]: TraceAbstraction took 8404.16ms. Allocated memory was 176.2MB in the beginning and 519.0MB in the end (delta: 342.9MB). Free memory was 94.9MB in the beginning and 234.8MB in the end (delta: -139.9MB). Peak memory consumption was 201.3MB. Max. memory is 8.0GB. [2023-12-09 15:28:01,757 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 176.2MB. Free memory was 134.6MB in the beginning and 134.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.84ms. Allocated memory is still 176.2MB. Free memory was 131.3MB in the beginning and 119.6MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.73ms. Allocated memory is still 176.2MB. Free memory was 119.6MB in the beginning and 117.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.51ms. Allocated memory is still 176.2MB. Free memory was 117.6MB in the beginning and 115.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 402.02ms. Allocated memory is still 176.2MB. Free memory was 115.9MB in the beginning and 95.6MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 8404.16ms. Allocated memory was 176.2MB in the beginning and 519.0MB in the end (delta: 342.9MB). Free memory was 94.9MB in the beginning and 234.8MB in the end (delta: -139.9MB). Peak memory consumption was 201.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 98]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 174 locations, 4 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: 8.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 274 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 274 mSDsluCounter, 973 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 752 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 956 IncrementalHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 221 mSDtfsCounter, 956 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 822 GetRequests, 719 SyntacticMatches, 9 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4571occurred in iteration=5, InterpolantAutomatonStates: 53, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 983 NumberOfCodeBlocks, 983 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1351 ConstructedInterpolants, 5 QuantifiedInterpolants, 6084 SizeOfPredicates, 52 NumberOfNonLiveVariables, 923 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 17/25 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-09 15:28:01,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...