/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/pthread-deagle/arithmetic_prog_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:41:32,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:41:32,614 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 12:41:32,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:41:32,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:41:32,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:41:32,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:41:32,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:41:32,632 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:41:32,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:41:32,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:41:32,635 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:41:32,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:41:32,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:41:32,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:41:32,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:41:32,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:41:32,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:41:32,636 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:41:32,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:41:32,636 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:41:32,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:41:32,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:41:32,640 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:41:32,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:41:32,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:41:32,641 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:41:32,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:41:32,641 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:41:32,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:41:32,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:41:32,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:41:32,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:41:32,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:41:32,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:41:32,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:41:32,854 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:41:32,855 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:41:32,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-11-17 12:41:33,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:41:34,106 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:41:34,108 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-11-17 12:41:34,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e09c41ce5/1a2b70f600a8474294775d9b00f1b23a/FLAG930debbc7 [2023-11-17 12:41:34,130 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e09c41ce5/1a2b70f600a8474294775d9b00f1b23a [2023-11-17 12:41:34,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:41:34,133 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:41:34,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:41:34,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:41:34,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:41:34,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:41:34" (1/1) ... [2023-11-17 12:41:34,137 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c03b67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34, skipping insertion in model container [2023-11-17 12:41:34,137 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:41:34" (1/1) ... [2023-11-17 12:41:34,180 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:41:34,473 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2023-11-17 12:41:34,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:41:34,495 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:41:34,519 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2023-11-17 12:41:34,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:41:34,565 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:41:34,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34 WrapperNode [2023-11-17 12:41:34,567 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:41:34,568 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:41:34,568 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:41:34,568 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:41:34,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34" (1/1) ... [2023-11-17 12:41:34,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34" (1/1) ... [2023-11-17 12:41:34,599 INFO L138 Inliner]: procedures = 244, calls = 54, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2023-11-17 12:41:34,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:41:34,600 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:41:34,600 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:41:34,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:41:34,608 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34" (1/1) ... [2023-11-17 12:41:34,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34" (1/1) ... [2023-11-17 12:41:34,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34" (1/1) ... [2023-11-17 12:41:34,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34" (1/1) ... [2023-11-17 12:41:34,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34" (1/1) ... [2023-11-17 12:41:34,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34" (1/1) ... [2023-11-17 12:41:34,640 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34" (1/1) ... [2023-11-17 12:41:34,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34" (1/1) ... [2023-11-17 12:41:34,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:41:34,644 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:41:34,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:41:34,644 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:41:34,644 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34" (1/1) ... [2023-11-17 12:41:34,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:41:34,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:41:34,666 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 12:41:34,707 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 12:41:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:41:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:41:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-17 12:41:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 12:41:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:41:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:41:34,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:41:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:41:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:41:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:41:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 12:41:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:41:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:41:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:41:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:41:34,716 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 12:41:34,864 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:41:34,866 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:41:35,046 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:41:35,198 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:41:35,199 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 12:41:35,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:41:35 BoogieIcfgContainer [2023-11-17 12:41:35,201 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:41:35,203 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:41:35,203 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:41:35,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:41:35,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:41:34" (1/3) ... [2023-11-17 12:41:35,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e24e96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:41:35, skipping insertion in model container [2023-11-17 12:41:35,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:41:34" (2/3) ... [2023-11-17 12:41:35,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e24e96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:41:35, skipping insertion in model container [2023-11-17 12:41:35,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:41:35" (3/3) ... [2023-11-17 12:41:35,211 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-11-17 12:41:35,223 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:41:35,223 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:41:35,223 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:41:35,262 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 12:41:35,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 98 flow [2023-11-17 12:41:35,328 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2023-11-17 12:41:35,329 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:41:35,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 6/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 29. Up to 3 conditions per place. [2023-11-17 12:41:35,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 98 flow [2023-11-17 12:41:35,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 84 flow [2023-11-17 12:41:35,342 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:41:35,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 36 transitions, 84 flow [2023-11-17 12:41:35,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 36 transitions, 84 flow [2023-11-17 12:41:35,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 84 flow [2023-11-17 12:41:35,373 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2023-11-17 12:41:35,374 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:41:35,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 4/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-11-17 12:41:35,375 INFO L119 LiptonReduction]: Number of co-enabled transitions 432 [2023-11-17 12:41:35,671 INFO L134 LiptonReduction]: Checked pairs total: 816 [2023-11-17 12:41:35,671 INFO L136 LiptonReduction]: Total number of compositions: 11 [2023-11-17 12:41:35,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:41:35,692 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;@5586c5c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:41:35,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 12:41:35,701 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:41:35,701 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2023-11-17 12:41:35,701 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:41:35,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:41:35,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:41:35,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:41:35,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:41:35,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1705161917, now seen corresponding path program 1 times [2023-11-17 12:41:35,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:41:35,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223771244] [2023-11-17 12:41:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:41:35,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:41:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:41:35,957 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 12:41:35,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:41:35,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223771244] [2023-11-17 12:41:35,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223771244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:41:35,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:41:35,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:41:35,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787160577] [2023-11-17 12:41:35,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:41:35,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:41:35,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:41:35,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:41:35,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:41:35,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2023-11-17 12:41:35,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 12:41:35,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:41:35,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2023-11-17 12:41:35,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:41:36,119 INFO L124 PetriNetUnfolderBase]: 263/448 cut-off events. [2023-11-17 12:41:36,119 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-17 12:41:36,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 448 events. 263/448 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1686 event pairs, 105 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 778. Up to 261 conditions per place. [2023-11-17 12:41:36,127 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 36 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-11-17 12:41:36,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 40 transitions, 171 flow [2023-11-17 12:41:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:41:36,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:41:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-17 12:41:36,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2023-11-17 12:41:36,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-17 12:41:36,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-17 12:41:36,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:41:36,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-17 12:41:36,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 12:41:36,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 12:41:36,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 12:41:36,151 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 62 flow. Second operand 3 states and 78 transitions. [2023-11-17 12:41:36,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 40 transitions, 171 flow [2023-11-17 12:41:36,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 161 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 12:41:36,156 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 66 flow [2023-11-17 12:41:36,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-11-17 12:41:36,159 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-11-17 12:41:36,159 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 66 flow [2023-11-17 12:41:36,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 12:41:36,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:41:36,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:41:36,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:41:36,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:41:36,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:41:36,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1582464804, now seen corresponding path program 1 times [2023-11-17 12:41:36,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:41:36,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079774656] [2023-11-17 12:41:36,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:41:36,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:41:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:41:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:41:36,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:41:36,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079774656] [2023-11-17 12:41:36,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079774656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:41:36,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:41:36,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:41:36,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391913128] [2023-11-17 12:41:36,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:41:36,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:41:36,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:41:36,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:41:36,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:41:36,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2023-11-17 12:41:36,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 12:41:36,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:41:36,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2023-11-17 12:41:36,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:41:36,335 INFO L124 PetriNetUnfolderBase]: 429/720 cut-off events. [2023-11-17 12:41:36,335 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-11-17 12:41:36,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1517 conditions, 720 events. 429/720 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3097 event pairs, 177 based on Foata normal form. 0/694 useless extension candidates. Maximal degree in co-relation 277. Up to 419 conditions per place. [2023-11-17 12:41:36,338 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 38 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-17 12:41:36,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 42 transitions, 189 flow [2023-11-17 12:41:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:41:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:41:36,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-17 12:41:36,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2023-11-17 12:41:36,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-17 12:41:36,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-17 12:41:36,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:41:36,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-17 12:41:36,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 12:41:36,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 12:41:36,345 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 12:41:36,345 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 66 flow. Second operand 3 states and 78 transitions. [2023-11-17 12:41:36,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 42 transitions, 189 flow [2023-11-17 12:41:36,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 42 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:41:36,347 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 76 flow [2023-11-17 12:41:36,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-11-17 12:41:36,347 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-11-17 12:41:36,348 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 76 flow [2023-11-17 12:41:36,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 12:41:36,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:41:36,348 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 12:41:36,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:41:36,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:41:36,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:41:36,350 INFO L85 PathProgramCache]: Analyzing trace with hash 610433822, now seen corresponding path program 1 times [2023-11-17 12:41:36,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:41:36,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622126705] [2023-11-17 12:41:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:41:36,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:41:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:41:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:41:36,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:41:36,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622126705] [2023-11-17 12:41:36,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622126705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:41:36,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378241826] [2023-11-17 12:41:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:41:36,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:41:36,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:41:36,457 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 12:41:36,463 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 12:41:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:41:36,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 12:41:36,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:41:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:41:36,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:41:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:41:36,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378241826] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:41:36,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:41:36,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-17 12:41:36,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123545683] [2023-11-17 12:41:36,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:41:36,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:41:36,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:41:36,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:41:36,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:41:36,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2023-11-17 12:41:36,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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 12:41:36,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:41:36,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2023-11-17 12:41:36,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:41:36,858 INFO L124 PetriNetUnfolderBase]: 797/1334 cut-off events. [2023-11-17 12:41:36,858 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2023-11-17 12:41:36,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2911 conditions, 1334 events. 797/1334 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5897 event pairs, 87 based on Foata normal form. 66/1400 useless extension candidates. Maximal degree in co-relation 998. Up to 276 conditions per place. [2023-11-17 12:41:36,863 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 78 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2023-11-17 12:41:36,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 86 transitions, 402 flow [2023-11-17 12:41:36,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:41:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:41:36,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2023-11-17 12:41:36,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031446540880503 [2023-11-17 12:41:36,865 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 160 transitions. [2023-11-17 12:41:36,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 160 transitions. [2023-11-17 12:41:36,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:41:36,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 160 transitions. [2023-11-17 12:41:36,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 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 12:41:36,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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 12:41:36,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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 12:41:36,867 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 76 flow. Second operand 6 states and 160 transitions. [2023-11-17 12:41:36,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 86 transitions, 402 flow [2023-11-17 12:41:36,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 86 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:41:36,868 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 114 flow [2023-11-17 12:41:36,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-11-17 12:41:36,869 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2023-11-17 12:41:36,869 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 114 flow [2023-11-17 12:41:36,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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 12:41:36,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:41:36,870 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:41:36,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 12:41:37,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:41:37,076 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:41:37,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:41:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2143770934, now seen corresponding path program 2 times [2023-11-17 12:41:37,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:41:37,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019813906] [2023-11-17 12:41:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:41:37,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:41:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:41:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 12:41:37,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:41:37,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019813906] [2023-11-17 12:41:37,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019813906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:41:37,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507654101] [2023-11-17 12:41:37,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:41:37,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:41:37,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:41:37,185 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:41:37,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 12:41:37,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:41:37,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:41:37,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 12:41:37,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:41:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 12:41:37,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:41:37,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507654101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:41:37,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:41:37,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-17 12:41:37,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667506006] [2023-11-17 12:41:37,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:41:37,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:41:37,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:41:37,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:41:37,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:41:37,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2023-11-17 12:41:37,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 12:41:37,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:41:37,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2023-11-17 12:41:37,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:41:37,444 INFO L124 PetriNetUnfolderBase]: 1191/1926 cut-off events. [2023-11-17 12:41:37,444 INFO L125 PetriNetUnfolderBase]: For 944/944 co-relation queries the response was YES. [2023-11-17 12:41:37,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4764 conditions, 1926 events. 1191/1926 cut-off events. For 944/944 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8129 event pairs, 250 based on Foata normal form. 0/1808 useless extension candidates. Maximal degree in co-relation 3332. Up to 1021 conditions per place. [2023-11-17 12:41:37,453 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 51 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2023-11-17 12:41:37,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 322 flow [2023-11-17 12:41:37,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:41:37,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:41:37,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2023-11-17 12:41:37,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481132075471698 [2023-11-17 12:41:37,454 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 95 transitions. [2023-11-17 12:41:37,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 95 transitions. [2023-11-17 12:41:37,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:41:37,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 95 transitions. [2023-11-17 12:41:37,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 12:41:37,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 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 12:41:37,455 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 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 12:41:37,456 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 114 flow. Second operand 4 states and 95 transitions. [2023-11-17 12:41:37,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 322 flow [2023-11-17 12:41:37,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 307 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 12:41:37,459 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 131 flow [2023-11-17 12:41:37,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-11-17 12:41:37,460 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 13 predicate places. [2023-11-17 12:41:37,460 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 131 flow [2023-11-17 12:41:37,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 12:41:37,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:41:37,460 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:41:37,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 12:41:37,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-17 12:41:37,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:41:37,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:41:37,667 INFO L85 PathProgramCache]: Analyzing trace with hash 420732978, now seen corresponding path program 3 times [2023-11-17 12:41:37,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:41:37,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718628817] [2023-11-17 12:41:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:41:37,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:41:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:41:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-17 12:41:37,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:41:37,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718628817] [2023-11-17 12:41:37,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718628817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:41:37,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:41:37,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:41:37,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263828306] [2023-11-17 12:41:37,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:41:37,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:41:37,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:41:37,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:41:37,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:41:37,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2023-11-17 12:41:37,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 12:41:37,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:41:37,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2023-11-17 12:41:37,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:41:37,883 INFO L124 PetriNetUnfolderBase]: 457/894 cut-off events. [2023-11-17 12:41:37,883 INFO L125 PetriNetUnfolderBase]: For 515/515 co-relation queries the response was YES. [2023-11-17 12:41:37,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 894 events. 457/894 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3714 event pairs, 134 based on Foata normal form. 132/1026 useless extension candidates. Maximal degree in co-relation 1595. Up to 477 conditions per place. [2023-11-17 12:41:37,888 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 25 selfloop transitions, 13 changer transitions 0/41 dead transitions. [2023-11-17 12:41:37,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 243 flow [2023-11-17 12:41:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:41:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:41:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-17 12:41:37,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2023-11-17 12:41:37,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-17 12:41:37,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-17 12:41:37,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:41:37,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-17 12:41:37,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 12:41:37,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 12:41:37,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 12:41:37,890 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 131 flow. Second operand 3 states and 78 transitions. [2023-11-17 12:41:37,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 243 flow [2023-11-17 12:41:37,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:41:37,892 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 156 flow [2023-11-17 12:41:37,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-17 12:41:37,893 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 14 predicate places. [2023-11-17 12:41:37,893 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 156 flow [2023-11-17 12:41:37,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 12:41:37,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:41:37,893 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:41:37,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:41:37,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:41:37,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:41:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash 815678132, now seen corresponding path program 4 times [2023-11-17 12:41:37,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:41:37,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531045620] [2023-11-17 12:41:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:41:37,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:41:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:41:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:41:37,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:41:37,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531045620] [2023-11-17 12:41:37,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531045620] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:41:37,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744868906] [2023-11-17 12:41:37,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:41:37,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:41:37,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:41:37,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:41:38,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 12:41:38,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:41:38,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:41:38,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 12:41:38,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:41:38,118 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:41:38,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:41:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:41:38,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744868906] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:41:38,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:41:38,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2023-11-17 12:41:38,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878983245] [2023-11-17 12:41:38,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:41:38,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:41:38,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:41:38,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:41:38,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:41:38,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2023-11-17 12:41:38,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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 12:41:38,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:41:38,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2023-11-17 12:41:38,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:41:38,317 INFO L124 PetriNetUnfolderBase]: 796/1587 cut-off events. [2023-11-17 12:41:38,317 INFO L125 PetriNetUnfolderBase]: For 1209/1213 co-relation queries the response was YES. [2023-11-17 12:41:38,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4843 conditions, 1587 events. 796/1587 cut-off events. For 1209/1213 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7782 event pairs, 152 based on Foata normal form. 144/1730 useless extension candidates. Maximal degree in co-relation 3668. Up to 496 conditions per place. [2023-11-17 12:41:38,344 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 79 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2023-11-17 12:41:38,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 88 transitions, 623 flow [2023-11-17 12:41:38,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:41:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:41:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2023-11-17 12:41:38,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748427672955975 [2023-11-17 12:41:38,345 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 151 transitions. [2023-11-17 12:41:38,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 151 transitions. [2023-11-17 12:41:38,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:41:38,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 151 transitions. [2023-11-17 12:41:38,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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 12:41:38,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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 12:41:38,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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 12:41:38,347 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 156 flow. Second operand 6 states and 151 transitions. [2023-11-17 12:41:38,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 88 transitions, 623 flow [2023-11-17 12:41:38,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 88 transitions, 575 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:41:38,350 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 186 flow [2023-11-17 12:41:38,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2023-11-17 12:41:38,351 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 22 predicate places. [2023-11-17 12:41:38,351 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 186 flow [2023-11-17 12:41:38,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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 12:41:38,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:41:38,351 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:41:38,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 12:41:38,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:41:38,556 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:41:38,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:41:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash 223851983, now seen corresponding path program 5 times [2023-11-17 12:41:38,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:41:38,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503573644] [2023-11-17 12:41:38,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:41:38,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:41:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:41:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 12:41:38,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:41:38,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503573644] [2023-11-17 12:41:38,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503573644] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:41:38,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486817271] [2023-11-17 12:41:38,709 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 12:41:38,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:41:38,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:41:38,711 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:41:38,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 12:41:38,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-17 12:41:38,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:41:38,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 12:41:38,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:41:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 12:41:38,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:41:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-17 12:41:38,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486817271] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:41:38,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:41:38,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2023-11-17 12:41:38,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667569074] [2023-11-17 12:41:38,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:41:38,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:41:38,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:41:38,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:41:38,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:41:38,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2023-11-17 12:41:38,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 12:41:38,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:41:38,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2023-11-17 12:41:38,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:41:38,990 INFO L124 PetriNetUnfolderBase]: 305/616 cut-off events. [2023-11-17 12:41:38,991 INFO L125 PetriNetUnfolderBase]: For 693/693 co-relation queries the response was YES. [2023-11-17 12:41:38,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1973 conditions, 616 events. 305/616 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2146 event pairs, 85 based on Foata normal form. 0/616 useless extension candidates. Maximal degree in co-relation 1119. Up to 316 conditions per place. [2023-11-17 12:41:38,993 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 46 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-11-17 12:41:38,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 348 flow [2023-11-17 12:41:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:41:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:41:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2023-11-17 12:41:38,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.419811320754717 [2023-11-17 12:41:38,994 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 89 transitions. [2023-11-17 12:41:38,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 89 transitions. [2023-11-17 12:41:38,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:41:38,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 89 transitions. [2023-11-17 12:41:38,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 12:41:38,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 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 12:41:38,995 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 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 12:41:38,995 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 186 flow. Second operand 4 states and 89 transitions. [2023-11-17 12:41:38,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 348 flow [2023-11-17 12:41:38,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 339 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 12:41:38,997 INFO L231 Difference]: Finished difference. Result has 52 places, 33 transitions, 174 flow [2023-11-17 12:41:38,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=52, PETRI_TRANSITIONS=33} [2023-11-17 12:41:38,998 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2023-11-17 12:41:38,998 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 33 transitions, 174 flow [2023-11-17 12:41:38,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 12:41:38,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:41:38,998 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:41:39,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 12:41:39,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:41:39,204 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:41:39,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:41:39,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1952670175, now seen corresponding path program 6 times [2023-11-17 12:41:39,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:41:39,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219786877] [2023-11-17 12:41:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:41:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:41:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:41:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:41:39,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:41:39,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219786877] [2023-11-17 12:41:39,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219786877] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:41:39,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613220235] [2023-11-17 12:41:39,554 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 12:41:39,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:41:39,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:41:39,555 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:41:39,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 12:41:39,780 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-11-17 12:41:39,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:41:39,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-17 12:41:39,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:41:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:41:39,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:41:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:41:40,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613220235] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:41:40,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:41:40,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2023-11-17 12:41:40,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907597651] [2023-11-17 12:41:40,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:41:40,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-17 12:41:40,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:41:40,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-17 12:41:40,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-11-17 12:41:40,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-17 12:41:40,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 33 transitions, 174 flow. Second operand has 31 states, 31 states have (on average 14.193548387096774) internal successors, (440), 31 states have internal predecessors, (440), 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 12:41:40,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:41:40,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-17 12:41:40,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:41:41,148 INFO L124 PetriNetUnfolderBase]: 242/529 cut-off events. [2023-11-17 12:41:41,148 INFO L125 PetriNetUnfolderBase]: For 701/701 co-relation queries the response was YES. [2023-11-17 12:41:41,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1684 conditions, 529 events. 242/529 cut-off events. For 701/701 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1781 event pairs, 22 based on Foata normal form. 18/547 useless extension candidates. Maximal degree in co-relation 932. Up to 109 conditions per place. [2023-11-17 12:41:41,150 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2023-11-17 12:41:41,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 89 transitions, 604 flow [2023-11-17 12:41:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 12:41:41,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 12:41:41,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 220 transitions. [2023-11-17 12:41:41,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34591194968553457 [2023-11-17 12:41:41,151 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 220 transitions. [2023-11-17 12:41:41,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 220 transitions. [2023-11-17 12:41:41,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:41:41,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 220 transitions. [2023-11-17 12:41:41,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 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 12:41:41,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 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 12:41:41,153 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 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 12:41:41,153 INFO L175 Difference]: Start difference. First operand has 52 places, 33 transitions, 174 flow. Second operand 12 states and 220 transitions. [2023-11-17 12:41:41,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 89 transitions, 604 flow [2023-11-17 12:41:41,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 89 transitions, 578 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 12:41:41,155 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-11-17 12:41:41,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-11-17 12:41:41,155 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 30 predicate places. [2023-11-17 12:41:41,155 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-11-17 12:41:41,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 14.193548387096774) internal successors, (440), 31 states have internal predecessors, (440), 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 12:41:41,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 12:41:41,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 12:41:41,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 12:41:41,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 12:41:41,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:41:41,378 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2023-11-17 12:41:41,381 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:41:41,381 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:41:41,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:41:41 BasicIcfg [2023-11-17 12:41:41,383 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:41:41,383 INFO L158 Benchmark]: Toolchain (without parser) took 7250.89ms. Allocated memory was 270.5MB in the beginning and 339.7MB in the end (delta: 69.2MB). Free memory was 220.2MB in the beginning and 268.0MB in the end (delta: -47.8MB). Peak memory consumption was 22.2MB. Max. memory is 8.0GB. [2023-11-17 12:41:41,384 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 183.5MB. Free memory is still 136.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:41:41,384 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.68ms. Allocated memory is still 270.5MB. Free memory was 220.2MB in the beginning and 193.2MB in the end (delta: 27.0MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-11-17 12:41:41,384 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.10ms. Allocated memory is still 270.5MB. Free memory was 193.2MB in the beginning and 190.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:41:41,384 INFO L158 Benchmark]: Boogie Preprocessor took 43.13ms. Allocated memory is still 270.5MB. Free memory was 190.9MB in the beginning and 189.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:41:41,384 INFO L158 Benchmark]: RCFGBuilder took 556.79ms. Allocated memory is still 270.5MB. Free memory was 189.1MB in the beginning and 208.0MB in the end (delta: -18.9MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2023-11-17 12:41:41,385 INFO L158 Benchmark]: TraceAbstraction took 6180.17ms. Allocated memory was 270.5MB in the beginning and 339.7MB in the end (delta: 69.2MB). Free memory was 207.0MB in the beginning and 268.0MB in the end (delta: -61.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-11-17 12:41:41,385 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 183.5MB. Free memory is still 136.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 433.68ms. Allocated memory is still 270.5MB. Free memory was 220.2MB in the beginning and 193.2MB in the end (delta: 27.0MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.10ms. Allocated memory is still 270.5MB. Free memory was 193.2MB in the beginning and 190.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.13ms. Allocated memory is still 270.5MB. Free memory was 190.9MB in the beginning and 189.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 556.79ms. Allocated memory is still 270.5MB. Free memory was 189.1MB in the beginning and 208.0MB in the end (delta: -18.9MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. * TraceAbstraction took 6180.17ms. Allocated memory was 270.5MB in the beginning and 339.7MB in the end (delta: 69.2MB). Free memory was 207.0MB in the beginning and 268.0MB in the end (delta: -61.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.3s, 39 PlacesBefore, 28 PlacesAfterwards, 36 TransitionsBefore, 25 TransitionsAfterwards, 432 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 816 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 527, independent: 487, independent conditional: 0, independent unconditional: 487, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 275, independent: 248, independent conditional: 0, independent unconditional: 248, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 275, independent: 235, independent conditional: 0, independent unconditional: 235, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 80, independent: 26, independent conditional: 0, independent unconditional: 26, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 527, independent: 239, independent conditional: 0, independent unconditional: 239, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 275, unknown conditional: 0, unknown unconditional: 275] , Statistics on independence cache: Total cache size (in pairs): 119, Positive cache size: 107, Positive conditional cache size: 0, Positive unconditional cache size: 107, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 919]: 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 5 procedures, 61 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.1s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 372 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 372 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2139 IncrementalHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 0 mSDtfsCounter, 2139 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 260 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=6, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 373 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 483 ConstructedInterpolants, 0 QuantifiedInterpolants, 2149 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1440 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 234/453 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 12:41:41,422 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...