/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 -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:23:37,897 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:23:37,957 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-SemanticLbe.epf [2023-11-17 12:23:37,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:23:37,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:23:37,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:23:37,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:23:37,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:23:37,981 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:23:37,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:23:37,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:23:37,982 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:23:37,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:23:37,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:23:37,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:23:37,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:23:37,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:23:37,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:23:37,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:23:37,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:23:37,984 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:23:37,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:23:37,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:23:37,985 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:23:37,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:23:37,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:23:37,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:23:37,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:23:37,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:23:37,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:23:37,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:23:37,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:23:37,987 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:23:38,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:23:38,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:23:38,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:23:38,258 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:23:38,259 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:23:38,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-11-17 12:23:39,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:23:39,674 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:23:39,675 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-11-17 12:23:39,681 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160acbe14/91a2874f0c85408eb438f742d6d141f6/FLAGb5d9a289f [2023-11-17 12:23:39,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160acbe14/91a2874f0c85408eb438f742d6d141f6 [2023-11-17 12:23:39,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:23:39,704 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:23:39,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:23:39,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:23:39,709 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:23:39,710 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:23:39" (1/1) ... [2023-11-17 12:23:39,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55baa3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:39, skipping insertion in model container [2023-11-17 12:23:39,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:23:39" (1/1) ... [2023-11-17 12:23:39,747 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:23:39,940 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] [2023-11-17 12:23:39,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:23:39,963 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:23:40,001 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] [2023-11-17 12:23:40,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:23:40,010 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:23:40,011 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:23:40,020 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:23:40,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:40 WrapperNode [2023-11-17 12:23:40,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:23:40,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:23:40,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:23:40,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:23:40,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:40" (1/1) ... [2023-11-17 12:23:40,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:40" (1/1) ... [2023-11-17 12:23:40,058 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2023-11-17 12:23:40,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:23:40,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:23:40,060 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:23:40,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:23:40,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:40" (1/1) ... [2023-11-17 12:23:40,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:40" (1/1) ... [2023-11-17 12:23:40,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:40" (1/1) ... [2023-11-17 12:23:40,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:40" (1/1) ... [2023-11-17 12:23:40,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:40" (1/1) ... [2023-11-17 12:23:40,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:40" (1/1) ... [2023-11-17 12:23:40,093 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:40" (1/1) ... [2023-11-17 12:23:40,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:40" (1/1) ... [2023-11-17 12:23:40,096 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:23:40,097 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:23:40,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:23:40,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:23:40,098 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:40" (1/1) ... [2023-11-17 12:23:40,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:23:40,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:23:40,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 12:23:40,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 12:23:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:23:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:23:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:23:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:23:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:23:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:23:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:23:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:23:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:23:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:23:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:23:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:23:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 12:23:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:23:40,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:23:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:23:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:23:40,153 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:23:40,233 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:23:40,235 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:23:40,497 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:23:40,683 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:23:40,684 INFO L307 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-17 12:23:40,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:23:40 BoogieIcfgContainer [2023-11-17 12:23:40,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:23:40,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:23:40,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:23:40,691 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:23:40,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:23:39" (1/3) ... [2023-11-17 12:23:40,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d437d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:23:40, skipping insertion in model container [2023-11-17 12:23:40,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:40" (2/3) ... [2023-11-17 12:23:40,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d437d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:23:40, skipping insertion in model container [2023-11-17 12:23:40,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:23:40" (3/3) ... [2023-11-17 12:23:40,694 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-11-17 12:23:40,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:23:40,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:23:40,711 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:23:40,787 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 12:23:40,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 87 flow [2023-11-17 12:23:40,864 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2023-11-17 12:23:40,864 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:23:40,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 3/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2023-11-17 12:23:40,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 87 flow [2023-11-17 12:23:40,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 29 transitions, 76 flow [2023-11-17 12:23:40,877 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:23:40,894 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 29 transitions, 76 flow [2023-11-17 12:23:40,898 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 29 transitions, 76 flow [2023-11-17 12:23:40,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 76 flow [2023-11-17 12:23:40,914 INFO L124 PetriNetUnfolderBase]: 3/29 cut-off events. [2023-11-17 12:23:40,914 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:23:40,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 29 events. 3/29 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2023-11-17 12:23:40,915 INFO L119 LiptonReduction]: Number of co-enabled transitions 240 [2023-11-17 12:23:41,382 INFO L134 LiptonReduction]: Checked pairs total: 333 [2023-11-17 12:23:41,383 INFO L136 LiptonReduction]: Total number of compositions: 7 [2023-11-17 12:23:41,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:23:41,409 INFO L357 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=false, 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;@1f8ad8d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:23:41,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 12:23:41,420 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:23:41,420 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-17 12:23:41,420 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:23:41,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:23:41,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:23:41,421 INFO L420 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)] === [2023-11-17 12:23:41,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:23:41,426 INFO L85 PathProgramCache]: Analyzing trace with hash -572889299, now seen corresponding path program 1 times [2023-11-17 12:23:41,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:23:41,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791552283] [2023-11-17 12:23:41,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:23:41,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:23:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:23:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:23:41,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:23:41,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791552283] [2023-11-17 12:23:41,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791552283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:23:41,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:23:41,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:23:41,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724886608] [2023-11-17 12:23:41,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:23:41,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:23:41,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:23:41,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:23:41,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:23:41,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2023-11-17 12:23:41,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:41,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:23:41,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2023-11-17 12:23:41,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:23:41,926 INFO L124 PetriNetUnfolderBase]: 178/280 cut-off events. [2023-11-17 12:23:41,926 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-17 12:23:41,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 280 events. 178/280 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 752 event pairs, 93 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 486. Up to 214 conditions per place. [2023-11-17 12:23:41,930 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 29 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-11-17 12:23:41,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 152 flow [2023-11-17 12:23:41,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:23:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:23:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2023-11-17 12:23:41,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2023-11-17 12:23:41,943 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 57 transitions. [2023-11-17 12:23:41,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 57 transitions. [2023-11-17 12:23:41,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:23:41,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 57 transitions. [2023-11-17 12:23:41,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:41,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:41,951 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:41,952 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 4 states and 57 transitions. [2023-11-17 12:23:41,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 152 flow [2023-11-17 12:23:41,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 136 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 12:23:41,957 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 64 flow [2023-11-17 12:23:41,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-11-17 12:23:41,961 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-17 12:23:41,962 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 64 flow [2023-11-17 12:23:41,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:41,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:23:41,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:23:41,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:23:41,963 INFO L420 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)] === [2023-11-17 12:23:41,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:23:41,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1153588796, now seen corresponding path program 1 times [2023-11-17 12:23:41,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:23:41,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482537080] [2023-11-17 12:23:41,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:23:41,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:23:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:23:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:23:42,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:23:42,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482537080] [2023-11-17 12:23:42,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482537080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:23:42,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:23:42,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:23:42,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544950445] [2023-11-17 12:23:42,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:23:42,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:23:42,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:23:42,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:23:42,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:23:42,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2023-11-17 12:23:42,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:42,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:23:42,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2023-11-17 12:23:42,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:23:42,175 INFO L124 PetriNetUnfolderBase]: 228/356 cut-off events. [2023-11-17 12:23:42,175 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-11-17 12:23:42,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 356 events. 228/356 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1037 event pairs, 129 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 158. Up to 278 conditions per place. [2023-11-17 12:23:42,179 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 31 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-11-17 12:23:42,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 166 flow [2023-11-17 12:23:42,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:23:42,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:23:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2023-11-17 12:23:42,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2023-11-17 12:23:42,180 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 57 transitions. [2023-11-17 12:23:42,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 57 transitions. [2023-11-17 12:23:42,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:23:42,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 57 transitions. [2023-11-17 12:23:42,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:42,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:42,182 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:42,182 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 64 flow. Second operand 4 states and 57 transitions. [2023-11-17 12:23:42,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 166 flow [2023-11-17 12:23:42,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 156 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 12:23:42,184 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 72 flow [2023-11-17 12:23:42,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-11-17 12:23:42,184 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2023-11-17 12:23:42,185 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 72 flow [2023-11-17 12:23:42,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:42,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:23:42,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:23:42,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:23:42,186 INFO L420 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)] === [2023-11-17 12:23:42,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:23:42,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1137518456, now seen corresponding path program 1 times [2023-11-17 12:23:42,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:23:42,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582928301] [2023-11-17 12:23:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:23:42,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:23:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:23:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:23:42,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:23:42,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582928301] [2023-11-17 12:23:42,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582928301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:23:42,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:23:42,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:23:42,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916682376] [2023-11-17 12:23:42,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:23:42,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:23:42,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:23:42,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:23:42,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:23:42,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2023-11-17 12:23:42,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:42,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:23:42,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2023-11-17 12:23:42,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:23:42,375 INFO L124 PetriNetUnfolderBase]: 228/357 cut-off events. [2023-11-17 12:23:42,375 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2023-11-17 12:23:42,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 357 events. 228/357 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 956 event pairs, 173 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 500. Up to 357 conditions per place. [2023-11-17 12:23:42,380 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-17 12:23:42,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 124 flow [2023-11-17 12:23:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:23:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:23:42,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2023-11-17 12:23:42,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2023-11-17 12:23:42,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 42 transitions. [2023-11-17 12:23:42,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 42 transitions. [2023-11-17 12:23:42,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:23:42,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 42 transitions. [2023-11-17 12:23:42,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:42,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:42,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:42,385 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 72 flow. Second operand 3 states and 42 transitions. [2023-11-17 12:23:42,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 124 flow [2023-11-17 12:23:42,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 118 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 12:23:42,387 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 78 flow [2023-11-17 12:23:42,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-17 12:23:42,389 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-11-17 12:23:42,389 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 78 flow [2023-11-17 12:23:42,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:42,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:23:42,390 INFO L208 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] [2023-11-17 12:23:42,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:23:42,390 INFO L420 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)] === [2023-11-17 12:23:42,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:23:42,391 INFO L85 PathProgramCache]: Analyzing trace with hash -457939575, now seen corresponding path program 1 times [2023-11-17 12:23:42,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:23:42,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893810378] [2023-11-17 12:23:42,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:23:42,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:23:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:23:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:23:42,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:23:42,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893810378] [2023-11-17 12:23:42,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893810378] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:23:42,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325482023] [2023-11-17 12:23:42,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:23:42,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:23:42,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:23:42,823 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) [2023-11-17 12:23:42,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 12:23:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:23:42,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 12:23:42,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:23:43,076 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 [2023-11-17 12:23:43,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:23:43,120 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 [2023-11-17 12:23:43,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:23:43,209 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 [2023-11-17 12:23:43,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:23:43,331 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 [2023-11-17 12:23:43,363 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 [2023-11-17 12:23:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:23:43,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:23:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:23:44,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325482023] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:23:44,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:23:44,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 10] total 20 [2023-11-17 12:23:44,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132499407] [2023-11-17 12:23:44,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:23:44,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 12:23:44,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:23:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 12:23:44,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=300, Unknown=14, NotChecked=0, Total=420 [2023-11-17 12:23:44,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2023-11-17 12:23:44,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 78 flow. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:44,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:23:44,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2023-11-17 12:23:44,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:23:44,403 INFO L124 PetriNetUnfolderBase]: 228/356 cut-off events. [2023-11-17 12:23:44,403 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-17 12:23:44,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 356 events. 228/356 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 979 event pairs, 93 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 893. Up to 215 conditions per place. [2023-11-17 12:23:44,405 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-11-17 12:23:44,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 190 flow [2023-11-17 12:23:44,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:23:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:23:44,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2023-11-17 12:23:44,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2023-11-17 12:23:44,406 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 53 transitions. [2023-11-17 12:23:44,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 53 transitions. [2023-11-17 12:23:44,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:23:44,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 53 transitions. [2023-11-17 12:23:44,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:44,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:44,408 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:44,408 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 78 flow. Second operand 4 states and 53 transitions. [2023-11-17 12:23:44,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 190 flow [2023-11-17 12:23:44,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 186 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 12:23:44,409 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-11-17 12:23:44,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-11-17 12:23:44,410 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-11-17 12:23:44,410 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-11-17 12:23:44,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:23:44,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 12:23:44,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 12:23:44,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 12:23:44,416 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 12:23:44,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 12:23:44,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:23:44,623 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-17 12:23:44,626 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:23:44,626 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:23:44,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:23:44 BasicIcfg [2023-11-17 12:23:44,635 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:23:44,636 INFO L158 Benchmark]: Toolchain (without parser) took 4932.09ms. Allocated memory was 261.1MB in the beginning and 323.0MB in the end (delta: 61.9MB). Free memory was 211.2MB in the beginning and 249.2MB in the end (delta: -38.0MB). Peak memory consumption was 24.4MB. Max. memory is 8.0GB. [2023-11-17 12:23:44,636 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 182.5MB. Free memory is still 134.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:23:44,637 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.11ms. Allocated memory is still 261.1MB. Free memory was 211.2MB in the beginning and 199.2MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 12:23:44,637 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.11ms. Allocated memory is still 261.1MB. Free memory was 199.2MB in the beginning and 197.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:23:44,638 INFO L158 Benchmark]: Boogie Preprocessor took 37.11ms. Allocated memory is still 261.1MB. Free memory was 197.6MB in the beginning and 195.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 12:23:44,638 INFO L158 Benchmark]: RCFGBuilder took 588.03ms. Allocated memory is still 261.1MB. Free memory was 195.9MB in the beginning and 154.6MB in the end (delta: 41.3MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2023-11-17 12:23:44,638 INFO L158 Benchmark]: TraceAbstraction took 3947.88ms. Allocated memory was 261.1MB in the beginning and 323.0MB in the end (delta: 61.9MB). Free memory was 153.9MB in the beginning and 249.2MB in the end (delta: -95.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:23:44,640 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 182.5MB. Free memory is still 134.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 318.11ms. Allocated memory is still 261.1MB. Free memory was 211.2MB in the beginning and 199.2MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.11ms. Allocated memory is still 261.1MB. Free memory was 199.2MB in the beginning and 197.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.11ms. Allocated memory is still 261.1MB. Free memory was 197.6MB in the beginning and 195.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 588.03ms. Allocated memory is still 261.1MB. Free memory was 195.9MB in the beginning and 154.6MB in the end (delta: 41.3MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * TraceAbstraction took 3947.88ms. Allocated memory was 261.1MB in the beginning and 323.0MB in the end (delta: 61.9MB). Free memory was 153.9MB in the beginning and 249.2MB in the end (delta: -95.3MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5s, 36 PlacesBefore, 29 PlacesAfterwards, 29 TransitionsBefore, 22 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 333 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 287, independent: 277, independent conditional: 0, independent unconditional: 277, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 168, independent: 158, independent conditional: 0, independent unconditional: 158, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 168, independent: 158, independent conditional: 0, independent unconditional: 158, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 40, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 287, independent: 119, independent conditional: 0, independent unconditional: 119, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 168, unknown conditional: 0, unknown unconditional: 168] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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, 48 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: 3.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 130 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 200 IncrementalHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 0 mSDtfsCounter, 200 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=3, InterpolantAutomatonStates: 15, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 120 ConstructedInterpolants, 8 QuantifiedInterpolants, 1475 SizeOfPredicates, 13 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 8/12 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! [2023-11-17 12:23:44,664 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...