/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 16:46:34,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 16:46:34,319 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-VariableLbe.epf [2023-08-24 16:46:34,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 16:46:34,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 16:46:34,364 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 16:46:34,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 16:46:34,365 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 16:46:34,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 16:46:34,370 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 16:46:34,370 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 16:46:34,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 16:46:34,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 16:46:34,371 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 16:46:34,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 16:46:34,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 16:46:34,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 16:46:34,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 16:46:34,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 16:46:34,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 16:46:34,373 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 16:46:34,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 16:46:34,374 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 16:46:34,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 16:46:34,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 16:46:34,375 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 16:46:34,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 16:46:34,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 16:46:34,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 16:46:34,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 16:46:34,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 16:46:34,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 16:46:34,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 16:46:34,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 16:46:34,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 16:46:34,377 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 16:46:34,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 16:46:34,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 16:46:34,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 16:46:34,684 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 16:46:34,686 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 16:46:34,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c [2023-08-24 16:46:35,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 16:46:36,062 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 16:46:36,063 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-5.wvr.c [2023-08-24 16:46:36,071 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa52d7d5/31c205fbccd44097914c4a45db0f738a/FLAG77c52e05b [2023-08-24 16:46:36,087 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa52d7d5/31c205fbccd44097914c4a45db0f738a [2023-08-24 16:46:36,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 16:46:36,093 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 16:46:36,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 16:46:36,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 16:46:36,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 16:46:36,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:46:36" (1/1) ... [2023-08-24 16:46:36,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5657b4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36, skipping insertion in model container [2023-08-24 16:46:36,101 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:46:36" (1/1) ... [2023-08-24 16:46:36,124 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 16:46:36,282 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/unroll-5.wvr.c[2644,2657] [2023-08-24 16:46:36,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 16:46:36,295 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 16:46:36,324 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/unroll-5.wvr.c[2644,2657] [2023-08-24 16:46:36,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 16:46:36,339 INFO L206 MainTranslator]: Completed translation [2023-08-24 16:46:36,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36 WrapperNode [2023-08-24 16:46:36,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 16:46:36,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 16:46:36,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 16:46:36,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 16:46:36,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36" (1/1) ... [2023-08-24 16:46:36,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36" (1/1) ... [2023-08-24 16:46:36,399 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 168 [2023-08-24 16:46:36,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 16:46:36,401 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 16:46:36,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 16:46:36,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 16:46:36,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36" (1/1) ... [2023-08-24 16:46:36,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36" (1/1) ... [2023-08-24 16:46:36,422 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36" (1/1) ... [2023-08-24 16:46:36,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36" (1/1) ... [2023-08-24 16:46:36,428 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36" (1/1) ... [2023-08-24 16:46:36,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36" (1/1) ... [2023-08-24 16:46:36,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36" (1/1) ... [2023-08-24 16:46:36,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36" (1/1) ... [2023-08-24 16:46:36,450 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 16:46:36,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 16:46:36,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 16:46:36,451 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 16:46:36,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36" (1/1) ... [2023-08-24 16:46:36,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 16:46:36,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:46:36,482 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) [2023-08-24 16:46:36,508 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 [2023-08-24 16:46:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 16:46:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 16:46:36,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 16:46:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 16:46:36,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 16:46:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 16:46:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 16:46:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 16:46:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 16:46:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 16:46:36,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 16:46:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 16:46:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 16:46:36,525 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 16:46:36,636 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 16:46:36,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 16:46:36,921 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 16:46:36,929 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 16:46:36,929 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 16:46:36,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:46:36 BoogieIcfgContainer [2023-08-24 16:46:36,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 16:46:36,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 16:46:36,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 16:46:36,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 16:46:36,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 04:46:36" (1/3) ... [2023-08-24 16:46:36,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203a93ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:46:36, skipping insertion in model container [2023-08-24 16:46:36,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:46:36" (2/3) ... [2023-08-24 16:46:36,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203a93ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:46:36, skipping insertion in model container [2023-08-24 16:46:36,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:46:36" (3/3) ... [2023-08-24 16:46:36,943 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2023-08-24 16:46:36,959 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 16:46:36,959 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 16:46:36,960 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 16:46:37,047 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 16:46:37,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 197 transitions, 410 flow [2023-08-24 16:46:37,165 INFO L124 PetriNetUnfolderBase]: 17/195 cut-off events. [2023-08-24 16:46:37,166 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 16:46:37,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 195 events. 17/195 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 165 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-24 16:46:37,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 197 transitions, 410 flow [2023-08-24 16:46:37,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 187 transitions, 386 flow [2023-08-24 16:46:37,179 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 16:46:37,187 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 187 transitions, 386 flow [2023-08-24 16:46:37,189 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 187 transitions, 386 flow [2023-08-24 16:46:37,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 187 transitions, 386 flow [2023-08-24 16:46:37,228 INFO L124 PetriNetUnfolderBase]: 17/187 cut-off events. [2023-08-24 16:46:37,228 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 16:46:37,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 187 events. 17/187 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 146 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-24 16:46:37,232 INFO L119 LiptonReduction]: Number of co-enabled transitions 3892 [2023-08-24 16:46:42,545 INFO L134 LiptonReduction]: Checked pairs total: 3871 [2023-08-24 16:46:42,545 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-08-24 16:46:42,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 16:46:42,562 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=LoopsAndPotentialCycles, 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;@d3baacf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 16:46:42,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 16:46:42,566 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 16:46:42,566 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2023-08-24 16:46:42,566 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 16:46:42,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:46:42,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:46:42,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 16:46:42,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:46:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2087323625, now seen corresponding path program 1 times [2023-08-24 16:46:42,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:46:42,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744852917] [2023-08-24 16:46:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:46:42,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:46:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:46:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:46:42,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:46:42,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744852917] [2023-08-24 16:46:42,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744852917] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:46:42,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:46:42,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 16:46:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053282816] [2023-08-24 16:46:42,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:46:42,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 16:46:42,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:46:43,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 16:46:43,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 16:46:43,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 425 [2023-08-24 16:46:43,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2023-08-24 16:46:43,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:46:43,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 425 [2023-08-24 16:46:43,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:46:43,078 INFO L124 PetriNetUnfolderBase]: 45/80 cut-off events. [2023-08-24 16:46:43,078 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 16:46:43,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 80 events. 45/80 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 181 event pairs, 18 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 120. Up to 76 conditions per place. [2023-08-24 16:46:43,082 INFO L140 encePairwiseOnDemand]: 422/425 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-08-24 16:46:43,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-08-24 16:46:43,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 16:46:43,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 16:46:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-08-24 16:46:43,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403921568627451 [2023-08-24 16:46:43,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-08-24 16:46:43,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-08-24 16:46:43,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:46:43,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-08-24 16:46:43,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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) [2023-08-24 16:46:43,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 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) [2023-08-24 16:46:43,120 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 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) [2023-08-24 16:46:43,121 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 515 transitions. [2023-08-24 16:46:43,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-08-24 16:46:43,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 16:46:43,125 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-08-24 16:46:43,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-08-24 16:46:43,129 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-08-24 16:46:43,129 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-08-24 16:46:43,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2023-08-24 16:46:43,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:46:43,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:46:43,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 16:46:43,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 16:46:43,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:46:43,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1641912843, now seen corresponding path program 1 times [2023-08-24 16:46:43,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:46:43,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897635136] [2023-08-24 16:46:43,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:46:43,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:46:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:46:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 16:46:43,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:46:43,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897635136] [2023-08-24 16:46:43,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897635136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:46:43,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:46:43,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 16:46:43,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880100491] [2023-08-24 16:46:43,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:46:43,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 16:46:43,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:46:43,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 16:46:43,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 16:46:43,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 425 [2023-08-24 16:46:43,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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) [2023-08-24 16:46:43,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:46:43,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 425 [2023-08-24 16:46:43,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:46:43,347 INFO L124 PetriNetUnfolderBase]: 66/117 cut-off events. [2023-08-24 16:46:43,347 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 16:46:43,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 117 events. 66/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 319 event pairs, 9 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 234. Up to 85 conditions per place. [2023-08-24 16:46:43,349 INFO L140 encePairwiseOnDemand]: 421/425 looper letters, 22 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2023-08-24 16:46:43,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 28 transitions, 125 flow [2023-08-24 16:46:43,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 16:46:43,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 16:46:43,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-08-24 16:46:43,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898039215686275 [2023-08-24 16:46:43,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-08-24 16:46:43,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-08-24 16:46:43,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:46:43,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-08-24 16:46:43,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 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) [2023-08-24 16:46:43,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 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) [2023-08-24 16:46:43,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 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) [2023-08-24 16:46:43,358 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 3 states and 497 transitions. [2023-08-24 16:46:43,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 28 transitions, 125 flow [2023-08-24 16:46:43,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 121 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 16:46:43,359 INFO L231 Difference]: Finished difference. Result has 22 places, 20 transitions, 65 flow [2023-08-24 16:46:43,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=22, PETRI_TRANSITIONS=20} [2023-08-24 16:46:43,360 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2023-08-24 16:46:43,360 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 20 transitions, 65 flow [2023-08-24 16:46:43,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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) [2023-08-24 16:46:43,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:46:43,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:46:43,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 16:46:43,362 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 16:46:43,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:46:43,367 INFO L85 PathProgramCache]: Analyzing trace with hash -806247694, now seen corresponding path program 1 times [2023-08-24 16:46:43,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:46:43,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614343655] [2023-08-24 16:46:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:46:43,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:46:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:46:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 16:46:43,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:46:43,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614343655] [2023-08-24 16:46:43,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614343655] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:46:43,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:46:43,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 16:46:43,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665152120] [2023-08-24 16:46:43,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:46:43,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 16:46:43,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:46:43,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 16:46:43,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 16:46:43,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 425 [2023-08-24 16:46:43,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 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) [2023-08-24 16:46:43,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:46:43,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 425 [2023-08-24 16:46:43,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:46:43,586 INFO L124 PetriNetUnfolderBase]: 74/143 cut-off events. [2023-08-24 16:46:43,586 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-24 16:46:43,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 143 events. 74/143 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 477 event pairs, 21 based on Foata normal form. 8/144 useless extension candidates. Maximal degree in co-relation 330. Up to 83 conditions per place. [2023-08-24 16:46:43,587 INFO L140 encePairwiseOnDemand]: 421/425 looper letters, 29 selfloop transitions, 4 changer transitions 2/36 dead transitions. [2023-08-24 16:46:43,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 36 transitions, 180 flow [2023-08-24 16:46:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 16:46:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 16:46:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 704 transitions. [2023-08-24 16:46:43,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41411764705882353 [2023-08-24 16:46:43,589 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 704 transitions. [2023-08-24 16:46:43,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 704 transitions. [2023-08-24 16:46:43,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:46:43,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 704 transitions. [2023-08-24 16:46:43,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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) [2023-08-24 16:46:43,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 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) [2023-08-24 16:46:43,595 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 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) [2023-08-24 16:46:43,595 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 65 flow. Second operand 4 states and 704 transitions. [2023-08-24 16:46:43,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 36 transitions, 180 flow [2023-08-24 16:46:43,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 36 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 16:46:43,597 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 89 flow [2023-08-24 16:46:43,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-08-24 16:46:43,598 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2023-08-24 16:46:43,598 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 89 flow [2023-08-24 16:46:43,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 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) [2023-08-24 16:46:43,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:46:43,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:46:43,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 16:46:43,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 16:46:43,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:46:43,599 INFO L85 PathProgramCache]: Analyzing trace with hash 229992477, now seen corresponding path program 1 times [2023-08-24 16:46:43,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:46:43,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584814909] [2023-08-24 16:46:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:46:43,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:46:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:46:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 16:46:43,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:46:43,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584814909] [2023-08-24 16:46:43,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584814909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:46:43,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:46:43,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 16:46:43,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029707395] [2023-08-24 16:46:43,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:46:43,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 16:46:43,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:46:43,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 16:46:43,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 16:46:43,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 425 [2023-08-24 16:46:43,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 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) [2023-08-24 16:46:43,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:46:43,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 425 [2023-08-24 16:46:43,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:46:43,835 INFO L124 PetriNetUnfolderBase]: 85/157 cut-off events. [2023-08-24 16:46:43,835 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2023-08-24 16:46:43,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 157 events. 85/157 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 474 event pairs, 2 based on Foata normal form. 10/166 useless extension candidates. Maximal degree in co-relation 447. Up to 72 conditions per place. [2023-08-24 16:46:43,837 INFO L140 encePairwiseOnDemand]: 419/425 looper letters, 34 selfloop transitions, 8 changer transitions 4/46 dead transitions. [2023-08-24 16:46:43,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 46 transitions, 255 flow [2023-08-24 16:46:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 16:46:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 16:46:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 989 transitions. [2023-08-24 16:46:43,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38784313725490194 [2023-08-24 16:46:43,840 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 989 transitions. [2023-08-24 16:46:43,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 989 transitions. [2023-08-24 16:46:43,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:46:43,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 989 transitions. [2023-08-24 16:46:43,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 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) [2023-08-24 16:46:43,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 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) [2023-08-24 16:46:43,848 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 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) [2023-08-24 16:46:43,849 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 89 flow. Second operand 6 states and 989 transitions. [2023-08-24 16:46:43,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 46 transitions, 255 flow [2023-08-24 16:46:43,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 241 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-24 16:46:43,853 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 120 flow [2023-08-24 16:46:43,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-24 16:46:43,855 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2023-08-24 16:46:43,855 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 120 flow [2023-08-24 16:46:43,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 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) [2023-08-24 16:46:43,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:46:43,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:46:43,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 16:46:43,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 16:46:43,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:46:43,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1530037243, now seen corresponding path program 2 times [2023-08-24 16:46:43,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:46:43,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148930111] [2023-08-24 16:46:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:46:43,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:46:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:46:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 16:46:43,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:46:43,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148930111] [2023-08-24 16:46:43,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148930111] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:46:43,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:46:43,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 16:46:43,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631723665] [2023-08-24 16:46:43,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:46:43,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 16:46:43,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:46:43,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 16:46:43,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 16:46:43,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 425 [2023-08-24 16:46:43,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 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) [2023-08-24 16:46:43,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:46:43,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 425 [2023-08-24 16:46:43,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:46:44,050 INFO L124 PetriNetUnfolderBase]: 73/137 cut-off events. [2023-08-24 16:46:44,050 INFO L125 PetriNetUnfolderBase]: For 157/164 co-relation queries the response was YES. [2023-08-24 16:46:44,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 137 events. 73/137 cut-off events. For 157/164 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 351 event pairs, 22 based on Foata normal form. 11/147 useless extension candidates. Maximal degree in co-relation 429. Up to 91 conditions per place. [2023-08-24 16:46:44,052 INFO L140 encePairwiseOnDemand]: 421/425 looper letters, 30 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-08-24 16:46:44,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 39 transitions, 246 flow [2023-08-24 16:46:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 16:46:44,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 16:46:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 670 transitions. [2023-08-24 16:46:44,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941176470588235 [2023-08-24 16:46:44,055 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 670 transitions. [2023-08-24 16:46:44,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 670 transitions. [2023-08-24 16:46:44,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:46:44,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 670 transitions. [2023-08-24 16:46:44,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 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) [2023-08-24 16:46:44,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 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) [2023-08-24 16:46:44,061 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 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) [2023-08-24 16:46:44,061 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 120 flow. Second operand 4 states and 670 transitions. [2023-08-24 16:46:44,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 39 transitions, 246 flow [2023-08-24 16:46:44,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 231 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-24 16:46:44,064 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 148 flow [2023-08-24 16:46:44,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-24 16:46:44,067 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 13 predicate places. [2023-08-24 16:46:44,067 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 148 flow [2023-08-24 16:46:44,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 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) [2023-08-24 16:46:44,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:46:44,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:46:44,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 16:46:44,068 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 16:46:44,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:46:44,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1425131543, now seen corresponding path program 3 times [2023-08-24 16:46:44,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:46:44,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859863310] [2023-08-24 16:46:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:46:44,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:46:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:46:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 16:46:44,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:46:44,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859863310] [2023-08-24 16:46:44,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859863310] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:46:44,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344203270] [2023-08-24 16:46:44,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 16:46:44,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:46:44,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:46:44,198 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) [2023-08-24 16:46:44,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 16:46:44,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 16:46:44,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:46:44,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-24 16:46:44,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:46:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 16:46:44,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 16:46:44,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344203270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:46:44,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 16:46:44,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-08-24 16:46:44,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278734154] [2023-08-24 16:46:44,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:46:44,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 16:46:44,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:46:44,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 16:46:44,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 16:46:44,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 425 [2023-08-24 16:46:44,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 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) [2023-08-24 16:46:44,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:46:44,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 425 [2023-08-24 16:46:44,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:46:44,413 INFO L124 PetriNetUnfolderBase]: 75/137 cut-off events. [2023-08-24 16:46:44,413 INFO L125 PetriNetUnfolderBase]: For 278/285 co-relation queries the response was YES. [2023-08-24 16:46:44,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 137 events. 75/137 cut-off events. For 278/285 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 339 event pairs, 22 based on Foata normal form. 13/149 useless extension candidates. Maximal degree in co-relation 520. Up to 97 conditions per place. [2023-08-24 16:46:44,414 INFO L140 encePairwiseOnDemand]: 421/425 looper letters, 27 selfloop transitions, 9 changer transitions 1/39 dead transitions. [2023-08-24 16:46:44,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 277 flow [2023-08-24 16:46:44,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 16:46:44,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 16:46:44,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 670 transitions. [2023-08-24 16:46:44,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941176470588235 [2023-08-24 16:46:44,417 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 670 transitions. [2023-08-24 16:46:44,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 670 transitions. [2023-08-24 16:46:44,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:46:44,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 670 transitions. [2023-08-24 16:46:44,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 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) [2023-08-24 16:46:44,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 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) [2023-08-24 16:46:44,421 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 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) [2023-08-24 16:46:44,421 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 148 flow. Second operand 4 states and 670 transitions. [2023-08-24 16:46:44,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 277 flow [2023-08-24 16:46:44,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 254 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-24 16:46:44,423 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 173 flow [2023-08-24 16:46:44,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-08-24 16:46:44,424 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 16 predicate places. [2023-08-24 16:46:44,424 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 173 flow [2023-08-24 16:46:44,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 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) [2023-08-24 16:46:44,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:46:44,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:46:44,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 16:46:44,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-24 16:46:44,635 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 16:46:44,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:46:44,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1884884534, now seen corresponding path program 1 times [2023-08-24 16:46:44,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:46:44,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711286439] [2023-08-24 16:46:44,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:46:44,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:46:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:46:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 16:46:44,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:46:44,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711286439] [2023-08-24 16:46:44,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711286439] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:46:44,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737515032] [2023-08-24 16:46:44,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:46:44,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:46:44,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:46:44,830 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) [2023-08-24 16:46:44,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 16:46:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:46:44,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-24 16:46:44,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:46:44,997 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 16:46:45,032 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:46:45,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 16:46:45,103 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-24 16:46:45,257 INFO L322 Elim1Store]: treesize reduction 39, result has 69.8 percent of original size [2023-08-24 16:46:45,257 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 95 treesize of output 122 [2023-08-24 16:46:45,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:46:45,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:46:45,630 WARN L839 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_137 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_137) c_~f~0.base))) (let ((.cse0 (select .cse1 (+ c_~f~0.offset (* (select .cse1 (+ (* (select .cse1 (+ (* 4 (select .cse1 (+ c_~f~0.offset (* ~x2~0 4)))) c_~f~0.offset)) 4) c_~f~0.offset)) 4))))) (or (< .cse0 0) (<= c_~size~0 .cse0) (= c_~x1~0 (select .cse1 (+ (* 4 .cse0) c_~f~0.offset))))))) is different from false [2023-08-24 16:46:45,647 WARN L839 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_137 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_137) c_~f~0.base))) (let ((.cse0 (select .cse1 (+ c_~f~0.offset (* (select .cse1 (+ (* (select .cse1 (+ (* 4 (select .cse1 (+ c_~f~0.offset (* ~x2~0 4)))) c_~f~0.offset)) 4) c_~f~0.offset)) 4))))) (or (< .cse0 0) (<= c_~size~0 .cse0) (= (select .cse1 (+ (* 4 .cse0) c_~f~0.offset)) (select (select |c_#memory_int| c_~f~0.base) (+ (* c_~x1~0 4) c_~f~0.offset))))))) is different from false [2023-08-24 16:46:45,798 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:46:45,799 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 371 treesize of output 215 [2023-08-24 16:46:45,894 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:46:45,895 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 1432 treesize of output 1264 [2023-08-24 16:46:46,055 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:46:46,055 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 183 treesize of output 277 [2023-08-24 16:46:46,200 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:46:46,200 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 238 treesize of output 210 [2023-08-24 16:46:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-24 16:46:50,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737515032] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:46:50,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:46:50,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2023-08-24 16:46:50,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919402689] [2023-08-24 16:46:50,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:46:50,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 16:46:50,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:46:50,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 16:46:50,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=151, Unknown=2, NotChecked=50, Total=240 [2023-08-24 16:46:50,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 425 [2023-08-24 16:46:50,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 173 flow. Second operand has 16 states, 16 states have (on average 116.6875) internal successors, (1867), 16 states have internal predecessors, (1867), 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) [2023-08-24 16:46:50,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:46:50,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 425 [2023-08-24 16:46:50,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:46:51,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 16:46:52,450 INFO L124 PetriNetUnfolderBase]: 209/372 cut-off events. [2023-08-24 16:46:52,450 INFO L125 PetriNetUnfolderBase]: For 662/694 co-relation queries the response was YES. [2023-08-24 16:46:52,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1442 conditions, 372 events. 209/372 cut-off events. For 662/694 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1381 event pairs, 8 based on Foata normal form. 43/408 useless extension candidates. Maximal degree in co-relation 770. Up to 177 conditions per place. [2023-08-24 16:46:52,453 INFO L140 encePairwiseOnDemand]: 417/425 looper letters, 35 selfloop transitions, 15 changer transitions 64/116 dead transitions. [2023-08-24 16:46:52,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 116 transitions, 819 flow [2023-08-24 16:46:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-24 16:46:52,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-24 16:46:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2500 transitions. [2023-08-24 16:46:52,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2801120448179272 [2023-08-24 16:46:52,461 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2500 transitions. [2023-08-24 16:46:52,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2500 transitions. [2023-08-24 16:46:52,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:46:52,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2500 transitions. [2023-08-24 16:46:52,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 119.04761904761905) internal successors, (2500), 21 states have internal predecessors, (2500), 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) [2023-08-24 16:46:52,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 425.0) internal successors, (9350), 22 states have internal predecessors, (9350), 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) [2023-08-24 16:46:52,480 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 425.0) internal successors, (9350), 22 states have internal predecessors, (9350), 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) [2023-08-24 16:46:52,480 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 173 flow. Second operand 21 states and 2500 transitions. [2023-08-24 16:46:52,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 116 transitions, 819 flow [2023-08-24 16:46:52,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 116 transitions, 779 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-24 16:46:52,484 INFO L231 Difference]: Finished difference. Result has 63 places, 34 transitions, 269 flow [2023-08-24 16:46:52,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=269, PETRI_PLACES=63, PETRI_TRANSITIONS=34} [2023-08-24 16:46:52,485 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 42 predicate places. [2023-08-24 16:46:52,485 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 34 transitions, 269 flow [2023-08-24 16:46:52,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 116.6875) internal successors, (1867), 16 states have internal predecessors, (1867), 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) [2023-08-24 16:46:52,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:46:52,486 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:46:52,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 16:46:52,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-08-24 16:46:52,693 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 16:46:52,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:46:52,694 INFO L85 PathProgramCache]: Analyzing trace with hash -102314750, now seen corresponding path program 2 times [2023-08-24 16:46:52,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:46:52,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084408169] [2023-08-24 16:46:52,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:46:52,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:46:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:46:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 16:46:52,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:46:52,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084408169] [2023-08-24 16:46:52,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084408169] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:46:52,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721494213] [2023-08-24 16:46:52,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 16:46:52,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:46:52,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:46:52,935 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) [2023-08-24 16:46:52,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 16:46:53,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 16:46:53,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:46:53,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-24 16:46:53,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:46:53,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 16:46:53,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:46:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 16:46:53,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721494213] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:46:53,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:46:53,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-24 16:46:53,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440163647] [2023-08-24 16:46:53,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:46:53,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 16:46:53,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:46:53,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 16:46:53,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-24 16:46:53,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 425 [2023-08-24 16:46:53,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 34 transitions, 269 flow. Second operand has 12 states, 12 states have (on average 170.58333333333334) internal successors, (2047), 12 states have internal predecessors, (2047), 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) [2023-08-24 16:46:53,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:46:53,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 425 [2023-08-24 16:46:53,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:46:54,307 INFO L124 PetriNetUnfolderBase]: 151/267 cut-off events. [2023-08-24 16:46:54,307 INFO L125 PetriNetUnfolderBase]: For 1216/1232 co-relation queries the response was YES. [2023-08-24 16:46:54,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 267 events. 151/267 cut-off events. For 1216/1232 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 850 event pairs, 9 based on Foata normal form. 48/312 useless extension candidates. Maximal degree in co-relation 1455. Up to 147 conditions per place. [2023-08-24 16:46:54,309 INFO L140 encePairwiseOnDemand]: 420/425 looper letters, 66 selfloop transitions, 18 changer transitions 0/86 dead transitions. [2023-08-24 16:46:54,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 811 flow [2023-08-24 16:46:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 16:46:54,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 16:46:54,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1738 transitions. [2023-08-24 16:46:54,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40894117647058825 [2023-08-24 16:46:54,315 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1738 transitions. [2023-08-24 16:46:54,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1738 transitions. [2023-08-24 16:46:54,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:46:54,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1738 transitions. [2023-08-24 16:46:54,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.8) internal successors, (1738), 10 states have internal predecessors, (1738), 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) [2023-08-24 16:46:54,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 425.0) internal successors, (4675), 11 states have internal predecessors, (4675), 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) [2023-08-24 16:46:54,327 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 425.0) internal successors, (4675), 11 states have internal predecessors, (4675), 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) [2023-08-24 16:46:54,327 INFO L175 Difference]: Start difference. First operand has 63 places, 34 transitions, 269 flow. Second operand 10 states and 1738 transitions. [2023-08-24 16:46:54,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 811 flow [2023-08-24 16:46:54,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 86 transitions, 705 flow, removed 44 selfloop flow, removed 12 redundant places. [2023-08-24 16:46:54,332 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 330 flow [2023-08-24 16:46:54,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=330, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-24 16:46:54,333 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 29 predicate places. [2023-08-24 16:46:54,333 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 330 flow [2023-08-24 16:46:54,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 170.58333333333334) internal successors, (2047), 12 states have internal predecessors, (2047), 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) [2023-08-24 16:46:54,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:46:54,334 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:46:54,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 16:46:54,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:46:54,540 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 16:46:54,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:46:54,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1112048388, now seen corresponding path program 3 times [2023-08-24 16:46:54,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:46:54,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836355733] [2023-08-24 16:46:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:46:54,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:46:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:46:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:46:57,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:46:57,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836355733] [2023-08-24 16:46:57,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836355733] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:46:57,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446222114] [2023-08-24 16:46:57,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 16:46:57,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:46:57,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:46:57,810 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) [2023-08-24 16:46:57,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 16:46:58,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-24 16:46:58,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:46:58,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 61 conjunts are in the unsatisfiable core [2023-08-24 16:46:58,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:46:58,140 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 16:46:58,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:46:58,236 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:46:58,580 INFO L322 Elim1Store]: treesize reduction 63, result has 22.2 percent of original size [2023-08-24 16:46:58,581 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 56 [2023-08-24 16:46:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 16:46:58,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:46:59,497 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:46:59,497 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1022 treesize of output 578 [2023-08-24 16:47:00,372 INFO L322 Elim1Store]: treesize reduction 5, result has 98.8 percent of original size [2023-08-24 16:47:00,373 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 1440 treesize of output 1619 [2023-08-24 16:47:01,627 INFO L322 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-08-24 16:47:01,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 1136 treesize of output 1160 [2023-08-24 16:47:03,397 INFO L322 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-08-24 16:47:03,398 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 449 treesize of output 701 [2023-08-24 16:47:38,476 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-24 16:48:11,208 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 16:51:16,757 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-24 16:53:42,284 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 16:54:00,087 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-24 16:57:08,116 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 16:57:12,625 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-24 16:57:31,835 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 16:58:28,852 WARN L234 SmtUtils]: Spent 13.23s on a formula simplification. DAG size of input: 762 DAG size of output: 837 (called from [L 729] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-08-24 17:00:40,859 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 [2023-08-24 17:00:40,860 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 [2023-08-24 17:00:40,860 WARN L266 SmtUtils]: Removed 1 from assertion stack [2023-08-24 17:00:40,862 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 17:00:40,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 17:00:41,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 17:00:41,072 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-56-12-192-19-192-19-8-16-66-16-66-16-8-14-192-19-66-16-3-7-3-5-3-7-2-3-1 context. [2023-08-24 17:00:41,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 17:00:41,074 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 17:00:41,074 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1] [2023-08-24 17:00:41,078 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 17:00:41,078 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 17:00:41,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 05:00:41 BasicIcfg [2023-08-24 17:00:41,086 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 17:00:41,087 INFO L158 Benchmark]: Toolchain (without parser) took 844993.24ms. Allocated memory was 346.0MB in the beginning and 1.3GB in the end (delta: 947.9MB). Free memory was 321.4MB in the beginning and 618.0MB in the end (delta: -296.6MB). Peak memory consumption was 799.5MB. Max. memory is 16.0GB. [2023-08-24 17:00:41,087 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 346.0MB. Free memory was 323.2MB in the beginning and 323.0MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 17:00:41,088 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.31ms. Allocated memory is still 346.0MB. Free memory was 321.4MB in the beginning and 308.6MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 17:00:41,089 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.73ms. Allocated memory is still 346.0MB. Free memory was 308.6MB in the beginning and 306.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 17:00:41,089 INFO L158 Benchmark]: Boogie Preprocessor took 49.68ms. Allocated memory is still 346.0MB. Free memory was 306.5MB in the beginning and 304.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 17:00:41,089 INFO L158 Benchmark]: RCFGBuilder took 480.04ms. Allocated memory is still 346.0MB. Free memory was 304.9MB in the beginning and 286.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 17:00:41,090 INFO L158 Benchmark]: TraceAbstraction took 844152.63ms. Allocated memory was 346.0MB in the beginning and 1.3GB in the end (delta: 947.9MB). Free memory was 286.0MB in the beginning and 618.0MB in the end (delta: -332.0MB). Peak memory consumption was 763.8MB. Max. memory is 16.0GB. [2023-08-24 17:00:41,093 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 346.0MB. Free memory was 323.2MB in the beginning and 323.0MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 244.31ms. Allocated memory is still 346.0MB. Free memory was 321.4MB in the beginning and 308.6MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.73ms. Allocated memory is still 346.0MB. Free memory was 308.6MB in the beginning and 306.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 49.68ms. Allocated memory is still 346.0MB. Free memory was 306.5MB in the beginning and 304.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 480.04ms. Allocated memory is still 346.0MB. Free memory was 304.9MB in the beginning and 286.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 844152.63ms. Allocated memory was 346.0MB in the beginning and 1.3GB in the end (delta: 947.9MB). Free memory was 286.0MB in the beginning and 618.0MB in the end (delta: -332.0MB). Peak memory consumption was 763.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 177 PlacesBefore, 21 PlacesAfterwards, 187 TransitionsBefore, 17 TransitionsAfterwards, 3892 CoEnabledTransitionPairs, 8 FixpointIterations, 75 TrivialSequentialCompositions, 78 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 36 ConcurrentYvCompositions, 14 ChoiceCompositions, 228 TotalNumberOfCompositions, 3871 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3827, independent: 3816, independent conditional: 0, independent unconditional: 3816, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2355, independent: 2349, independent conditional: 0, independent unconditional: 2349, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3827, independent: 1467, independent conditional: 0, independent unconditional: 1467, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 2355, unknown conditional: 0, unknown unconditional: 2355] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-56-12-192-19-192-19-8-16-66-16-66-16-8-14-192-19-66-16-3-7-3-5-3-7-2-3-1 context. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-56-12-192-19-192-19-8-16-66-16-66-16-8-14-192-19-66-16-3-7-3-5-3-7-2-3-1 context. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-56-12-192-19-192-19-8-16-66-16-66-16-8-14-192-19-66-16-3-7-3-5-3-7-2-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 265 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 844.0s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 267 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 267 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 196 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 901 IncrementalHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 11 mSDtfsCounter, 901 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=330occurred in iteration=8, InterpolantAutomatonStates: 55, 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, 0.5s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 204 ConstructedInterpolants, 10 QuantifiedInterpolants, 2801 SizeOfPredicates, 24 NumberOfNonLiveVariables, 557 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 24/41 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