/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:35:53,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:35:53,140 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 12:35:53,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:35:53,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:35:53,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:35:53,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:35:53,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:35:53,218 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:35:53,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:35:53,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:35:53,223 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:35:53,223 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:35:53,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:35:53,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:35:53,224 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:35:53,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:35:53,225 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:35:53,225 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:35:53,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:35:53,225 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:35:53,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:35:53,226 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:35:53,226 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:35:53,227 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:35:53,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:35:53,227 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:35:53,227 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:35:53,227 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:35:53,228 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:35:53,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:35:53,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:35:53,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:35:53,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:35:53,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:35:53,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:35:53,510 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:35:53,510 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:35:53,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-11-17 12:35:54,754 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:35:54,958 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:35:54,958 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-11-17 12:35:54,971 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a204dca0/0787457fc40b4ad8bd4705cf5358d0a3/FLAG3289f410a [2023-11-17 12:35:55,338 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a204dca0/0787457fc40b4ad8bd4705cf5358d0a3 [2023-11-17 12:35:55,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:35:55,341 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:35:55,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:35:55,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:35:55,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:35:55,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:35:55" (1/1) ... [2023-11-17 12:35:55,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4658b961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55, skipping insertion in model container [2023-11-17 12:35:55,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:35:55" (1/1) ... [2023-11-17 12:35:55,376 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:35:55,513 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c[2730,2743] [2023-11-17 12:35:55,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:35:55,529 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:35:55,549 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c[2730,2743] [2023-11-17 12:35:55,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:35:55,560 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:35:55,560 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:35:55,567 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:35:55,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55 WrapperNode [2023-11-17 12:35:55,567 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:35:55,568 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:35:55,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:35:55,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:35:55,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55" (1/1) ... [2023-11-17 12:35:55,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55" (1/1) ... [2023-11-17 12:35:55,613 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 156 [2023-11-17 12:35:55,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:35:55,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:35:55,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:35:55,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:35:55,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55" (1/1) ... [2023-11-17 12:35:55,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55" (1/1) ... [2023-11-17 12:35:55,626 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55" (1/1) ... [2023-11-17 12:35:55,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55" (1/1) ... [2023-11-17 12:35:55,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55" (1/1) ... [2023-11-17 12:35:55,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55" (1/1) ... [2023-11-17 12:35:55,641 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55" (1/1) ... [2023-11-17 12:35:55,643 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55" (1/1) ... [2023-11-17 12:35:55,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:35:55,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:35:55,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:35:55,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:35:55,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55" (1/1) ... [2023-11-17 12:35:55,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:35:55,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:35:55,685 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 12:35:55,686 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 12:35:55,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:35:55,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:35:55,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:35:55,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:35:55,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:35:55,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:35:55,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:35:55,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:35:55,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:35:55,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:35:55,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:35:55,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:35:55,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:35:55,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 12:35:55,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:35:55,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:35:55,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:35:55,710 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 12:35:55,814 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:35:55,816 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:35:56,161 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:35:56,451 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:35:56,451 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 12:35:56,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:35:56 BoogieIcfgContainer [2023-11-17 12:35:56,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:35:56,455 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:35:56,455 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:35:56,458 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:35:56,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:35:55" (1/3) ... [2023-11-17 12:35:56,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2aa62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:35:56, skipping insertion in model container [2023-11-17 12:35:56,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:35:55" (2/3) ... [2023-11-17 12:35:56,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2aa62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:35:56, skipping insertion in model container [2023-11-17 12:35:56,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:35:56" (3/3) ... [2023-11-17 12:35:56,461 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2023-11-17 12:35:56,477 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:35:56,478 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:35:56,478 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:35:56,530 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 12:35:56,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 41 transitions, 103 flow [2023-11-17 12:35:56,610 INFO L124 PetriNetUnfolderBase]: 7/38 cut-off events. [2023-11-17 12:35:56,610 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:35:56,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 7/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2023-11-17 12:35:56,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 41 transitions, 103 flow [2023-11-17 12:35:56,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 92 flow [2023-11-17 12:35:56,634 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:35:56,649 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 37 transitions, 92 flow [2023-11-17 12:35:56,652 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 37 transitions, 92 flow [2023-11-17 12:35:56,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 92 flow [2023-11-17 12:35:56,671 INFO L124 PetriNetUnfolderBase]: 7/37 cut-off events. [2023-11-17 12:35:56,671 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:35:56,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 7/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2023-11-17 12:35:56,673 INFO L119 LiptonReduction]: Number of co-enabled transitions 344 [2023-11-17 12:35:57,032 INFO L134 LiptonReduction]: Checked pairs total: 684 [2023-11-17 12:35:57,032 INFO L136 LiptonReduction]: Total number of compositions: 10 [2023-11-17 12:35:57,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:35:57,051 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;@479c9509, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:35:57,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 12:35:57,060 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:35:57,060 INFO L124 PetriNetUnfolderBase]: 7/29 cut-off events. [2023-11-17 12:35:57,060 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:35:57,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:35:57,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:35:57,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:35:57,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:35:57,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1954440945, now seen corresponding path program 1 times [2023-11-17 12:35:57,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:35:57,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792888012] [2023-11-17 12:35:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:35:57,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:35:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:35:57,727 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 12:35:57,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:35:57,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792888012] [2023-11-17 12:35:57,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792888012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:35:57,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:35:57,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 12:35:57,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356055298] [2023-11-17 12:35:57,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:35:57,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:35:57,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:35:57,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:35:57,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:35:57,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2023-11-17 12:35:57,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 78 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 12:35:57,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:35:57,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2023-11-17 12:35:57,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:35:58,018 INFO L124 PetriNetUnfolderBase]: 583/832 cut-off events. [2023-11-17 12:35:58,019 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-17 12:35:58,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1745 conditions, 832 events. 583/832 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2629 event pairs, 183 based on Foata normal form. 1/590 useless extension candidates. Maximal degree in co-relation 1298. Up to 450 conditions per place. [2023-11-17 12:35:58,026 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 47 selfloop transitions, 3 changer transitions 1/51 dead transitions. [2023-11-17 12:35:58,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 51 transitions, 237 flow [2023-11-17 12:35:58,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:35:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:35:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2023-11-17 12:35:58,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2023-11-17 12:35:58,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 82 transitions. [2023-11-17 12:35:58,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 82 transitions. [2023-11-17 12:35:58,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:35:58,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 82 transitions. [2023-11-17 12:35:58,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 12:35:58,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 12:35:58,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 12:35:58,047 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 78 flow. Second operand 3 states and 82 transitions. [2023-11-17 12:35:58,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 51 transitions, 237 flow [2023-11-17 12:35:58,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 51 transitions, 215 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 12:35:58,053 INFO L231 Difference]: Finished difference. Result has 30 places, 32 transitions, 85 flow [2023-11-17 12:35:58,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=30, PETRI_TRANSITIONS=32} [2023-11-17 12:35:58,057 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2023-11-17 12:35:58,057 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 32 transitions, 85 flow [2023-11-17 12:35:58,058 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 12:35:58,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:35:58,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:35:58,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:35:58,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:35:58,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:35:58,059 INFO L85 PathProgramCache]: Analyzing trace with hash 783352477, now seen corresponding path program 1 times [2023-11-17 12:35:58,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:35:58,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590396797] [2023-11-17 12:35:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:35:58,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:35:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:35:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:35:58,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:35:58,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590396797] [2023-11-17 12:35:58,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590396797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:35:58,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:35:58,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:35:58,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43016342] [2023-11-17 12:35:58,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:35:58,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:35:58,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:35:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:35:58,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:35:58,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 51 [2023-11-17 12:35:58,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 32 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 12:35:58,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:35:58,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 51 [2023-11-17 12:35:58,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:35:58,452 INFO L124 PetriNetUnfolderBase]: 1045/1509 cut-off events. [2023-11-17 12:35:58,452 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2023-11-17 12:35:58,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3311 conditions, 1509 events. 1045/1509 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5357 event pairs, 581 based on Foata normal form. 50/1209 useless extension candidates. Maximal degree in co-relation 1562. Up to 833 conditions per place. [2023-11-17 12:35:58,462 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 67 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2023-11-17 12:35:58,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 79 transitions, 357 flow [2023-11-17 12:35:58,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:35:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:35:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2023-11-17 12:35:58,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40522875816993464 [2023-11-17 12:35:58,465 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 124 transitions. [2023-11-17 12:35:58,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 124 transitions. [2023-11-17 12:35:58,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:35:58,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 124 transitions. [2023-11-17 12:35:58,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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 12:35:58,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 12:35:58,468 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 12:35:58,468 INFO L175 Difference]: Start difference. First operand has 30 places, 32 transitions, 85 flow. Second operand 6 states and 124 transitions. [2023-11-17 12:35:58,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 79 transitions, 357 flow [2023-11-17 12:35:58,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 79 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:35:58,471 INFO L231 Difference]: Finished difference. Result has 37 places, 42 transitions, 159 flow [2023-11-17 12:35:58,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=37, PETRI_TRANSITIONS=42} [2023-11-17 12:35:58,472 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-11-17 12:35:58,472 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 42 transitions, 159 flow [2023-11-17 12:35:58,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 12:35:58,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:35:58,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:35:58,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:35:58,473 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:35:58,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:35:58,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1516082256, now seen corresponding path program 1 times [2023-11-17 12:35:58,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:35:58,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553266520] [2023-11-17 12:35:58,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:35:58,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:35:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:35:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:35:58,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:35:58,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553266520] [2023-11-17 12:35:58,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553266520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:35:58,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:35:58,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:35:58,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839134572] [2023-11-17 12:35:58,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:35:58,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:35:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:35:58,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:35:58,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:35:58,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-17 12:35:58,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 42 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 12:35:58,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:35:58,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-17 12:35:58,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:35:58,823 INFO L124 PetriNetUnfolderBase]: 755/1113 cut-off events. [2023-11-17 12:35:58,824 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2023-11-17 12:35:58,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2690 conditions, 1113 events. 755/1113 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3726 event pairs, 408 based on Foata normal form. 0/905 useless extension candidates. Maximal degree in co-relation 1969. Up to 833 conditions per place. [2023-11-17 12:35:58,829 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 29 selfloop transitions, 6 changer transitions 35/70 dead transitions. [2023-11-17 12:35:58,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 70 transitions, 375 flow [2023-11-17 12:35:58,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:35:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:35:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2023-11-17 12:35:58,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3660130718954248 [2023-11-17 12:35:58,834 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 112 transitions. [2023-11-17 12:35:58,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 112 transitions. [2023-11-17 12:35:58,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:35:58,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 112 transitions. [2023-11-17 12:35:58,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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 12:35:58,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 12:35:58,838 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 12:35:58,838 INFO L175 Difference]: Start difference. First operand has 37 places, 42 transitions, 159 flow. Second operand 6 states and 112 transitions. [2023-11-17 12:35:58,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 70 transitions, 375 flow [2023-11-17 12:35:58,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 70 transitions, 375 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 12:35:58,842 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 140 flow [2023-11-17 12:35:58,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2023-11-17 12:35:58,844 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-11-17 12:35:58,844 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 140 flow [2023-11-17 12:35:58,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 12:35:58,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:35:58,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:35:58,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:35:58,845 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:35:58,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:35:58,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1792176129, now seen corresponding path program 1 times [2023-11-17 12:35:58,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:35:58,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611246739] [2023-11-17 12:35:58,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:35:58,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:35:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:35:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:35:58,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:35:58,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611246739] [2023-11-17 12:35:58,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611246739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:35:58,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670783847] [2023-11-17 12:35:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:35:58,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:35:58,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:35:58,967 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 12:35:58,983 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 12:35:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:35:59,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 12:35:59,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:35:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:35:59,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:35:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:35:59,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670783847] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:35:59,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:35:59,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-17 12:35:59,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515138707] [2023-11-17 12:35:59,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:35:59,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:35:59,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:35:59,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:35:59,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:35:59,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 51 [2023-11-17 12:35:59,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 12:35:59,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:35:59,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 51 [2023-11-17 12:35:59,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:35:59,385 INFO L124 PetriNetUnfolderBase]: 766/1090 cut-off events. [2023-11-17 12:35:59,385 INFO L125 PetriNetUnfolderBase]: For 548/548 co-relation queries the response was YES. [2023-11-17 12:35:59,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2819 conditions, 1090 events. 766/1090 cut-off events. For 548/548 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3606 event pairs, 360 based on Foata normal form. 0/950 useless extension candidates. Maximal degree in co-relation 2775. Up to 834 conditions per place. [2023-11-17 12:35:59,392 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 47 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-11-17 12:35:59,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 298 flow [2023-11-17 12:35:59,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:35:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:35:59,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2023-11-17 12:35:59,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33725490196078434 [2023-11-17 12:35:59,394 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 86 transitions. [2023-11-17 12:35:59,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 86 transitions. [2023-11-17 12:35:59,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:35:59,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 86 transitions. [2023-11-17 12:35:59,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 12:35:59,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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 12:35:59,396 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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 12:35:59,396 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 140 flow. Second operand 5 states and 86 transitions. [2023-11-17 12:35:59,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 298 flow [2023-11-17 12:35:59,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 51 transitions, 258 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-17 12:35:59,404 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 130 flow [2023-11-17 12:35:59,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-11-17 12:35:59,405 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-11-17 12:35:59,405 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 130 flow [2023-11-17 12:35:59,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 12:35:59,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:35:59,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:35:59,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 12:35:59,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:35:59,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:35:59,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:35:59,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1342087725, now seen corresponding path program 1 times [2023-11-17 12:35:59,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:35:59,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110971522] [2023-11-17 12:35:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:35:59,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:35:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:35:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:35:59,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:35:59,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110971522] [2023-11-17 12:35:59,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110971522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:35:59,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375354289] [2023-11-17 12:35:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:35:59,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:35:59,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:35:59,786 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 12:35:59,805 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 12:35:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:35:59,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 12:35:59,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:35:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:35:59,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:36:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:36:00,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375354289] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:36:00,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:36:00,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2023-11-17 12:36:00,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443804784] [2023-11-17 12:36:00,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:36:00,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 12:36:00,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:36:00,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 12:36:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:36:00,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-17 12:36:00,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 130 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 12:36:00,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:36:00,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-17 12:36:00,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:36:00,272 INFO L124 PetriNetUnfolderBase]: 942/1317 cut-off events. [2023-11-17 12:36:00,273 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2023-11-17 12:36:00,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 1317 events. 942/1317 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4293 event pairs, 249 based on Foata normal form. 0/1071 useless extension candidates. Maximal degree in co-relation 3258. Up to 564 conditions per place. [2023-11-17 12:36:00,281 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 57 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2023-11-17 12:36:00,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 354 flow [2023-11-17 12:36:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:36:00,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:36:00,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2023-11-17 12:36:00,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30532212885154064 [2023-11-17 12:36:00,283 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 109 transitions. [2023-11-17 12:36:00,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 109 transitions. [2023-11-17 12:36:00,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:36:00,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 109 transitions. [2023-11-17 12:36:00,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 12:36:00,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 12:36:00,286 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 12:36:00,286 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 130 flow. Second operand 7 states and 109 transitions. [2023-11-17 12:36:00,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 354 flow [2023-11-17 12:36:00,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 336 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-17 12:36:00,289 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 167 flow [2023-11-17 12:36:00,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-11-17 12:36:00,291 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-11-17 12:36:00,291 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 167 flow [2023-11-17 12:36:00,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 12:36:00,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:36:00,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:36:00,301 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 12:36:00,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:36:00,501 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:36:00,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:36:00,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1788588648, now seen corresponding path program 1 times [2023-11-17 12:36:00,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:36:00,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756297014] [2023-11-17 12:36:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:36:00,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:36:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:36:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 12:36:00,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:36:00,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756297014] [2023-11-17 12:36:00,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756297014] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:36:00,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877949290] [2023-11-17 12:36:00,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:36:00,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:36:00,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:36:00,617 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 12:36:00,639 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 12:36:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:36:00,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 12:36:00,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:36:00,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 12:36:00,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:36:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 12:36:00,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877949290] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:36:00,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:36:00,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-11-17 12:36:00,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095003564] [2023-11-17 12:36:00,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:36:00,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:36:00,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:36:00,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:36:00,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:36:00,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 51 [2023-11-17 12:36:00,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 12:36:00,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:36:00,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 51 [2023-11-17 12:36:00,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:36:00,975 INFO L124 PetriNetUnfolderBase]: 888/1231 cut-off events. [2023-11-17 12:36:00,975 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2023-11-17 12:36:00,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 1231 events. 888/1231 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3890 event pairs, 407 based on Foata normal form. 66/1093 useless extension candidates. Maximal degree in co-relation 3589. Up to 982 conditions per place. [2023-11-17 12:36:00,983 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 52 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2023-11-17 12:36:00,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 359 flow [2023-11-17 12:36:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:36:00,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:36:00,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2023-11-17 12:36:00,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33725490196078434 [2023-11-17 12:36:00,985 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 86 transitions. [2023-11-17 12:36:00,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 86 transitions. [2023-11-17 12:36:00,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:36:00,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 86 transitions. [2023-11-17 12:36:00,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 12:36:00,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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 12:36:00,986 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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 12:36:00,986 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 167 flow. Second operand 5 states and 86 transitions. [2023-11-17 12:36:00,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 359 flow [2023-11-17 12:36:00,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 354 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 12:36:00,990 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 183 flow [2023-11-17 12:36:00,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-11-17 12:36:00,992 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-11-17 12:36:00,992 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 183 flow [2023-11-17 12:36:00,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 12:36:00,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:36:00,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:36:01,003 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 12:36:01,204 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 12:36:01,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:36:01,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:36:01,204 INFO L85 PathProgramCache]: Analyzing trace with hash -765871246, now seen corresponding path program 1 times [2023-11-17 12:36:01,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:36:01,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240273109] [2023-11-17 12:36:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:36:01,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:36:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:36:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:36:02,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:36:02,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240273109] [2023-11-17 12:36:02,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240273109] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:36:02,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340883508] [2023-11-17 12:36:02,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:36:02,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:36:02,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:36:02,651 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 12:36:02,672 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 12:36:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:36:02,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-17 12:36:02,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:36:03,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:36:03,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:36:03,222 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 12:36:03,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2023-11-17 12:36:03,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:36:03,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:36:03,308 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 12:36:03,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2023-11-17 12:36:03,441 INFO L349 Elim1Store]: treesize reduction 36, result has 52.0 percent of original size [2023-11-17 12:36:03,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 54 [2023-11-17 12:36:04,327 INFO L349 Elim1Store]: treesize reduction 72, result has 71.1 percent of original size [2023-11-17 12:36:04,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 120 treesize of output 244 [2023-11-17 12:36:05,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:36:05,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:36:11,703 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_260 (Array Int Int))) (= (mod (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_260))) (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~csum~0 (select (select .cse0 c_~B~0.base) c_~B~0.offset))) 4294967296) (mod (+ c_~asum~0 c_~bsum~0) 4294967296))) is different from false [2023-11-17 12:36:11,719 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_259 (Array Int Int)) (v_ArrVal_260 (Array Int Int))) (= (mod (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_259) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_260))) (+ (select (select .cse0 c_~B~0.base) c_~B~0.offset) (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~csum~0)) 4294967296) (mod (+ c_~asum~0 c_~bsum~0) 4294967296))) is different from false [2023-11-17 12:36:11,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:36:11,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1430 treesize of output 922 [2023-11-17 12:36:11,811 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:36:11,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 422 treesize of output 414 [2023-11-17 12:36:11,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:36:11,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 406 treesize of output 382 Received shutdown request... [2023-11-17 12:44:53,590 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 12:44:53,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-17 12:44:53,614 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:44:53,616 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:44:53,797 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 12:44:53,797 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-8-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ∧-12-3-6-1 context. [2023-11-17 12:44:53,799 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 12:44:53,799 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 12:44:53,800 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 12:44:53,800 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:44:53,803 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:44:53,803 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:44:53,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:44:53 BasicIcfg [2023-11-17 12:44:53,806 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:44:53,807 INFO L158 Benchmark]: Toolchain (without parser) took 538465.65ms. Allocated memory was 283.1MB in the beginning and 706.7MB in the end (delta: 423.6MB). Free memory was 231.8MB in the beginning and 289.2MB in the end (delta: -57.5MB). Peak memory consumption was 430.2MB. Max. memory is 8.0GB. [2023-11-17 12:44:53,807 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 195.0MB. Free memory was 147.1MB in the beginning and 146.9MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:44:53,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.69ms. Allocated memory is still 283.1MB. Free memory was 231.8MB in the beginning and 219.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 12:44:53,808 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.39ms. Allocated memory is still 283.1MB. Free memory was 219.6MB in the beginning and 217.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:44:53,808 INFO L158 Benchmark]: Boogie Preprocessor took 31.91ms. Allocated memory is still 283.1MB. Free memory was 217.5MB in the beginning and 215.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 12:44:53,808 INFO L158 Benchmark]: RCFGBuilder took 806.02ms. Allocated memory is still 283.1MB. Free memory was 215.9MB in the beginning and 238.0MB in the end (delta: -22.1MB). Peak memory consumption was 51.8MB. Max. memory is 8.0GB. [2023-11-17 12:44:53,809 INFO L158 Benchmark]: TraceAbstraction took 537351.71ms. Allocated memory was 283.1MB in the beginning and 706.7MB in the end (delta: 423.6MB). Free memory was 237.5MB in the beginning and 289.2MB in the end (delta: -51.8MB). Peak memory consumption was 435.0MB. Max. memory is 8.0GB. [2023-11-17 12:44:53,810 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 195.0MB. Free memory was 147.1MB in the beginning and 146.9MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.69ms. Allocated memory is still 283.1MB. Free memory was 231.8MB in the beginning and 219.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.39ms. Allocated memory is still 283.1MB. Free memory was 219.6MB in the beginning and 217.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.91ms. Allocated memory is still 283.1MB. Free memory was 217.5MB in the beginning and 215.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 806.02ms. Allocated memory is still 283.1MB. Free memory was 215.9MB in the beginning and 238.0MB in the end (delta: -22.1MB). Peak memory consumption was 51.8MB. Max. memory is 8.0GB. * TraceAbstraction took 537351.71ms. Allocated memory was 283.1MB in the beginning and 706.7MB in the end (delta: 423.6MB). Free memory was 237.5MB in the beginning and 289.2MB in the end (delta: -51.8MB). Peak memory consumption was 435.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4s, 40 PlacesBefore, 33 PlacesAfterwards, 37 TransitionsBefore, 30 TransitionsAfterwards, 344 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 684 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 551, independent: 525, independent conditional: 0, independent unconditional: 525, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 237, independent: 221, independent conditional: 0, independent unconditional: 221, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 237, independent: 221, independent conditional: 0, independent unconditional: 221, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 53, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 551, independent: 304, independent conditional: 0, independent unconditional: 304, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 237, unknown conditional: 0, unknown unconditional: 237] , Statistics on independence cache: Total cache size (in pairs): 96, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-8-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ∧-12-3-6-1 context. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-8-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ∧-12-3-6-1 context. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-8-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ∧-12-3-6-1 context. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-8-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ∧-12-3-6-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 54 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 537.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 178 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 178 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 701 IncrementalHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 0 mSDtfsCounter, 701 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 147 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=6, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 1065 SizeOfPredicates, 8 NumberOfNonLiveVariables, 883 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 37/44 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown