/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:56:57,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:56:57,952 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 15:56:57,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:56:57,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:56:57,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:56:57,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:56:57,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:56:57,986 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:56:57,989 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:56:57,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:56:57,990 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:56:57,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:56:57,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:56:57,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:56:57,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:56:57,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:56:57,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:56:57,993 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:56:57,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:56:57,993 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:56:57,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:56:57,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:56:57,994 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:56:57,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:56:57,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:56:57,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:56:57,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:56:57,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:56:57,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:56:57,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:56:57,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:56:57,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:56:58,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:56:58,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:56:58,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:56:58,225 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:56:58,226 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:56:58,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c [2023-11-17 15:56:59,361 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:56:59,521 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:56:59,522 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c [2023-11-17 15:56:59,529 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d6f0a77/940fec92705b474cbc5ec62b248b2a7a/FLAG997ae9053 [2023-11-17 15:56:59,544 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d6f0a77/940fec92705b474cbc5ec62b248b2a7a [2023-11-17 15:56:59,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:56:59,547 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:56:59,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:56:59,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:56:59,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:56:59,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:56:59" (1/1) ... [2023-11-17 15:56:59,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193e797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59, skipping insertion in model container [2023-11-17 15:56:59,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:56:59" (1/1) ... [2023-11-17 15:56:59,572 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:56:59,720 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c[2311,2324] [2023-11-17 15:56:59,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:56:59,732 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:56:59,750 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c[2311,2324] [2023-11-17 15:56:59,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:56:59,764 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:56:59,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59 WrapperNode [2023-11-17 15:56:59,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:56:59,765 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:56:59,765 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:56:59,766 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:56:59,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59" (1/1) ... [2023-11-17 15:56:59,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59" (1/1) ... [2023-11-17 15:56:59,798 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2023-11-17 15:56:59,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:56:59,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:56:59,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:56:59,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:56:59,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59" (1/1) ... [2023-11-17 15:56:59,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59" (1/1) ... [2023-11-17 15:56:59,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59" (1/1) ... [2023-11-17 15:56:59,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59" (1/1) ... [2023-11-17 15:56:59,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59" (1/1) ... [2023-11-17 15:56:59,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59" (1/1) ... [2023-11-17 15:56:59,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59" (1/1) ... [2023-11-17 15:56:59,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59" (1/1) ... [2023-11-17 15:56:59,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:56:59,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:56:59,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:56:59,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:56:59,821 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59" (1/1) ... [2023-11-17 15:56:59,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:56:59,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:56:59,854 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 15:56:59,877 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 15:56:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:56:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:56:59,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:56:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:56:59,885 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:56:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 15:56:59,885 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 15:56:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:56:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:56:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:56:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:56:59,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:56:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:56:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:56:59,889 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 15:56:59,982 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:56:59,984 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:57:00,136 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:57:00,145 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:57:00,145 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:57:00,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:57:00 BoogieIcfgContainer [2023-11-17 15:57:00,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:57:00,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:57:00,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:57:00,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:57:00,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:56:59" (1/3) ... [2023-11-17 15:57:00,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b96fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:57:00, skipping insertion in model container [2023-11-17 15:57:00,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:56:59" (2/3) ... [2023-11-17 15:57:00,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b96fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:57:00, skipping insertion in model container [2023-11-17 15:57:00,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:57:00" (3/3) ... [2023-11-17 15:57:00,155 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-trans.wvr.c [2023-11-17 15:57:00,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:57:00,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:57:00,172 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:57:00,282 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 15:57:00,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 88 transitions, 197 flow [2023-11-17 15:57:00,395 INFO L124 PetriNetUnfolderBase]: 1/85 cut-off events. [2023-11-17 15:57:00,395 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:57:00,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 1/85 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 26 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-17 15:57:00,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 88 transitions, 197 flow [2023-11-17 15:57:00,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 166 flow [2023-11-17 15:57:00,417 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:57:00,442 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 74 transitions, 166 flow [2023-11-17 15:57:00,445 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 74 transitions, 166 flow [2023-11-17 15:57:00,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 74 transitions, 166 flow [2023-11-17 15:57:00,485 INFO L124 PetriNetUnfolderBase]: 1/74 cut-off events. [2023-11-17 15:57:00,486 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:57:00,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 74 events. 1/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2023-11-17 15:57:00,487 INFO L119 LiptonReduction]: Number of co-enabled transitions 384 [2023-11-17 15:57:02,631 INFO L134 LiptonReduction]: Checked pairs total: 485 [2023-11-17 15:57:02,631 INFO L136 LiptonReduction]: Total number of compositions: 63 [2023-11-17 15:57:02,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:57:02,652 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;@7dabb1b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:57:02,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:57:02,658 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:57:02,658 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 15:57:02,658 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:57:02,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:02,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:02,659 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 15:57:02,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:02,664 INFO L85 PathProgramCache]: Analyzing trace with hash 857399679, now seen corresponding path program 1 times [2023-11-17 15:57:02,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:02,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367864716] [2023-11-17 15:57:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:02,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:03,430 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 15:57:03,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:03,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367864716] [2023-11-17 15:57:03,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367864716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:03,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:03,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:03,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545139688] [2023-11-17 15:57:03,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:03,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:03,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:03,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:03,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:03,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 151 [2023-11-17 15:57:03,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 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 15:57:03,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:03,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 151 [2023-11-17 15:57:03,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:03,727 INFO L124 PetriNetUnfolderBase]: 38/100 cut-off events. [2023-11-17 15:57:03,727 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-17 15:57:03,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 282 event pairs, 2 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2023-11-17 15:57:03,731 INFO L140 encePairwiseOnDemand]: 146/151 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-11-17 15:57:03,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-11-17 15:57:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:57:03,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:57:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 448 transitions. [2023-11-17 15:57:03,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49448123620309054 [2023-11-17 15:57:03,754 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 448 transitions. [2023-11-17 15:57:03,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 448 transitions. [2023-11-17 15:57:03,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:03,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 448 transitions. [2023-11-17 15:57:03,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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 15:57:03,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 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 15:57:03,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 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 15:57:03,774 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 448 transitions. [2023-11-17 15:57:03,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-11-17 15:57:03,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 15:57:03,780 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-11-17 15:57:03,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-11-17 15:57:03,786 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-11-17 15:57:03,786 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-11-17 15:57:03,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 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 15:57:03,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:03,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:03,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:57:03,787 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 15:57:03,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:03,790 INFO L85 PathProgramCache]: Analyzing trace with hash 722884883, now seen corresponding path program 2 times [2023-11-17 15:57:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:03,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683097691] [2023-11-17 15:57:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:03,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:04,070 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 15:57:04,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:04,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683097691] [2023-11-17 15:57:04,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683097691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:04,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:04,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:57:04,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366978553] [2023-11-17 15:57:04,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:04,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:57:04,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:04,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:57:04,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:57:04,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 151 [2023-11-17 15:57:04,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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 15:57:04,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:04,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 151 [2023-11-17 15:57:04,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:04,234 INFO L124 PetriNetUnfolderBase]: 39/109 cut-off events. [2023-11-17 15:57:04,235 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-17 15:57:04,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 109 events. 39/109 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 336 event pairs, 7 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 297. Up to 58 conditions per place. [2023-11-17 15:57:04,236 INFO L140 encePairwiseOnDemand]: 147/151 looper letters, 21 selfloop transitions, 5 changer transitions 14/40 dead transitions. [2023-11-17 15:57:04,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 209 flow [2023-11-17 15:57:04,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2023-11-17 15:57:04,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5139072847682119 [2023-11-17 15:57:04,243 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2023-11-17 15:57:04,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2023-11-17 15:57:04,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:04,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2023-11-17 15:57:04,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 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 15:57:04,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 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 15:57:04,247 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 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 15:57:04,247 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 5 states and 388 transitions. [2023-11-17 15:57:04,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 209 flow [2023-11-17 15:57:04,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 207 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:04,251 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 76 flow [2023-11-17 15:57:04,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=76, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-11-17 15:57:04,252 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-11-17 15:57:04,253 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 76 flow [2023-11-17 15:57:04,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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 15:57:04,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:04,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:04,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:57:04,255 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 15:57:04,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash -2093811355, now seen corresponding path program 3 times [2023-11-17 15:57:04,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:04,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562476124] [2023-11-17 15:57:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:04,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:04,522 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 15:57:04,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:04,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562476124] [2023-11-17 15:57:04,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562476124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:04,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:04,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:04,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563584881] [2023-11-17 15:57:04,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:04,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:04,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:04,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:04,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:04,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 151 [2023-11-17 15:57:04,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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 15:57:04,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:04,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 151 [2023-11-17 15:57:04,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:04,659 INFO L124 PetriNetUnfolderBase]: 16/53 cut-off events. [2023-11-17 15:57:04,659 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-17 15:57:04,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 53 events. 16/53 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 103 event pairs, 5 based on Foata normal form. 2/55 useless extension candidates. Maximal degree in co-relation 155. Up to 31 conditions per place. [2023-11-17 15:57:04,661 INFO L140 encePairwiseOnDemand]: 147/151 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-11-17 15:57:04,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 140 flow [2023-11-17 15:57:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2023-11-17 15:57:04,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495364238410596 [2023-11-17 15:57:04,664 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2023-11-17 15:57:04,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2023-11-17 15:57:04,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:04,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2023-11-17 15:57:04,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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 15:57:04,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 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 15:57:04,667 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 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 15:57:04,668 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 76 flow. Second operand 5 states and 374 transitions. [2023-11-17 15:57:04,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 140 flow [2023-11-17 15:57:04,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 25 transitions, 131 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 15:57:04,670 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-11-17 15:57:04,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-11-17 15:57:04,671 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-11-17 15:57:04,672 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-11-17 15:57:04,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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 15:57:04,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:57:04,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:57:04,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:57:04,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:57:04,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:57:04,676 INFO L445 BasicCegarLoop]: Path program histogram: [3] [2023-11-17 15:57:04,680 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:57:04,680 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:57:04,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:57:04 BasicIcfg [2023-11-17 15:57:04,686 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:57:04,688 INFO L158 Benchmark]: Toolchain (without parser) took 5139.22ms. Allocated memory was 253.8MB in the beginning and 307.2MB in the end (delta: 53.5MB). Free memory was 211.5MB in the beginning and 266.6MB in the end (delta: -55.1MB). Peak memory consumption was 139.5MB. Max. memory is 8.0GB. [2023-11-17 15:57:04,688 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 118.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:57:04,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.90ms. Allocated memory is still 253.8MB. Free memory was 211.5MB in the beginning and 200.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-11-17 15:57:04,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.99ms. Allocated memory is still 253.8MB. Free memory was 200.5MB in the beginning and 198.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:57:04,691 INFO L158 Benchmark]: Boogie Preprocessor took 20.33ms. Allocated memory is still 253.8MB. Free memory was 198.4MB in the beginning and 197.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:57:04,691 INFO L158 Benchmark]: RCFGBuilder took 327.21ms. Allocated memory is still 253.8MB. Free memory was 197.4MB in the beginning and 183.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 15:57:04,692 INFO L158 Benchmark]: TraceAbstraction took 4536.52ms. Allocated memory was 253.8MB in the beginning and 307.2MB in the end (delta: 53.5MB). Free memory was 183.2MB in the beginning and 266.6MB in the end (delta: -83.4MB). Peak memory consumption was 111.2MB. Max. memory is 8.0GB. [2023-11-17 15:57:04,697 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 118.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 216.90ms. Allocated memory is still 253.8MB. Free memory was 211.5MB in the beginning and 200.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.99ms. Allocated memory is still 253.8MB. Free memory was 200.5MB in the beginning and 198.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.33ms. Allocated memory is still 253.8MB. Free memory was 198.4MB in the beginning and 197.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 327.21ms. Allocated memory is still 253.8MB. Free memory was 197.4MB in the beginning and 183.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4536.52ms. Allocated memory was 253.8MB in the beginning and 307.2MB in the end (delta: 53.5MB). Free memory was 183.2MB in the beginning and 266.6MB in the end (delta: -83.4MB). Peak memory consumption was 111.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 83 PlacesBefore, 26 PlacesAfterwards, 74 TransitionsBefore, 16 TransitionsAfterwards, 384 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 485 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 485, independent: 485, independent conditional: 0, independent unconditional: 485, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 295, independent: 295, independent conditional: 0, independent unconditional: 295, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 295, independent: 295, independent conditional: 0, independent unconditional: 295, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 485, independent: 190, independent conditional: 0, independent unconditional: 190, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 295, unknown conditional: 0, unknown unconditional: 295] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 76]: 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, 106 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: 4.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 188 IncrementalHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 188 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=2, InterpolantAutomatonStates: 16, 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, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 406 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 15:57:04,722 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...