/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/bigshot_s2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 20:35:09,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 20:35:09,985 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 [2023-08-26 20:35:09,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 20:35:09,988 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 20:35:10,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 20:35:10,012 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 20:35:10,012 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 20:35:10,012 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 20:35:10,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 20:35:10,016 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 20:35:10,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 20:35:10,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 20:35:10,017 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 20:35:10,017 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 20:35:10,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 20:35:10,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 20:35:10,018 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 20:35:10,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 20:35:10,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 20:35:10,018 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 20:35:10,019 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 20:35:10,019 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 20:35:10,019 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 20:35:10,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 20:35:10,020 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 20:35:10,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 20:35:10,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:35:10,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 20:35:10,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 20:35:10,021 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 20:35:10,021 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 20:35:10,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 20:35:10,021 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 20:35:10,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 20:35:10,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 20:35:10,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 20:35:10,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 20:35:10,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 20:35:10,310 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 20:35:10,310 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 20:35:10,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s2.i [2023-08-26 20:35:11,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 20:35:11,664 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 20:35:11,664 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i [2023-08-26 20:35:11,686 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d524f4ede/dcb37bbe15604d668876df2c1e7c5667/FLAG4b648cb3c [2023-08-26 20:35:11,699 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d524f4ede/dcb37bbe15604d668876df2c1e7c5667 [2023-08-26 20:35:11,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 20:35:11,703 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 20:35:11,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 20:35:11,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 20:35:11,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 20:35:11,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:35:11" (1/1) ... [2023-08-26 20:35:11,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e2800b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:11, skipping insertion in model container [2023-08-26 20:35:11,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:35:11" (1/1) ... [2023-08-26 20:35:11,743 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 20:35:12,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:35:12,081 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 20:35:12,100 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [274] [2023-08-26 20:35:12,102 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [274] [2023-08-26 20:35:12,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:35:12,169 INFO L206 MainTranslator]: Completed translation [2023-08-26 20:35:12,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12 WrapperNode [2023-08-26 20:35:12,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 20:35:12,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 20:35:12,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 20:35:12,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 20:35:12,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12" (1/1) ... [2023-08-26 20:35:12,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12" (1/1) ... [2023-08-26 20:35:12,198 INFO L138 Inliner]: procedures = 323, calls = 34, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-08-26 20:35:12,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 20:35:12,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 20:35:12,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 20:35:12,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 20:35:12,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12" (1/1) ... [2023-08-26 20:35:12,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12" (1/1) ... [2023-08-26 20:35:12,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12" (1/1) ... [2023-08-26 20:35:12,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12" (1/1) ... [2023-08-26 20:35:12,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12" (1/1) ... [2023-08-26 20:35:12,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12" (1/1) ... [2023-08-26 20:35:12,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12" (1/1) ... [2023-08-26 20:35:12,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12" (1/1) ... [2023-08-26 20:35:12,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 20:35:12,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 20:35:12,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 20:35:12,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 20:35:12,216 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12" (1/1) ... [2023-08-26 20:35:12,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:35:12,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:35:12,234 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) [2023-08-26 20:35:12,250 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 [2023-08-26 20:35:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 20:35:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 20:35:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-08-26 20:35:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 20:35:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 20:35:12,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 20:35:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 20:35:12,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 20:35:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 20:35:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 20:35:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 20:35:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 20:35:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 20:35:12,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 20:35:12,258 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 20:35:12,336 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 20:35:12,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 20:35:12,449 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 20:35:12,453 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 20:35:12,454 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-26 20:35:12,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:35:12 BoogieIcfgContainer [2023-08-26 20:35:12,455 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 20:35:12,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 20:35:12,456 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 20:35:12,458 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 20:35:12,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:35:11" (1/3) ... [2023-08-26 20:35:12,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5797713b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:35:12, skipping insertion in model container [2023-08-26 20:35:12,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12" (2/3) ... [2023-08-26 20:35:12,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5797713b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:35:12, skipping insertion in model container [2023-08-26 20:35:12,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:35:12" (3/3) ... [2023-08-26 20:35:12,460 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2023-08-26 20:35:12,488 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 20:35:12,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-26 20:35:12,488 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 20:35:12,523 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 20:35:12,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 86 transitions, 188 flow [2023-08-26 20:35:12,568 INFO L124 PetriNetUnfolderBase]: 5/84 cut-off events. [2023-08-26 20:35:12,568 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 20:35:12,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 5/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-26 20:35:12,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 86 transitions, 188 flow [2023-08-26 20:35:12,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 71 transitions, 154 flow [2023-08-26 20:35:12,574 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 20:35:12,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 71 transitions, 154 flow [2023-08-26 20:35:12,581 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 71 transitions, 154 flow [2023-08-26 20:35:12,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 71 transitions, 154 flow [2023-08-26 20:35:12,593 INFO L124 PetriNetUnfolderBase]: 3/71 cut-off events. [2023-08-26 20:35:12,593 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 20:35:12,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 71 events. 3/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-08-26 20:35:12,594 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-08-26 20:35:14,609 INFO L134 LiptonReduction]: Checked pairs total: 177 [2023-08-26 20:35:14,610 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-08-26 20:35:14,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 20:35:14,632 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;@58face2b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 20:35:14,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-26 20:35:14,652 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 20:35:14,652 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-08-26 20:35:14,652 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 20:35:14,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:14,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:14,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 20:35:14,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1737152627, now seen corresponding path program 1 times [2023-08-26 20:35:14,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:14,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942634304] [2023-08-26 20:35:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:14,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:35:15,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:15,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942634304] [2023-08-26 20:35:15,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942634304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:15,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:15,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:35:15,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325158924] [2023-08-26 20:35:15,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:15,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:35:15,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:15,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:35:15,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:35:15,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 148 [2023-08-26 20:35:15,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2023-08-26 20:35:15,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:15,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 148 [2023-08-26 20:35:15,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:15,109 INFO L124 PetriNetUnfolderBase]: 5/20 cut-off events. [2023-08-26 20:35:15,109 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 20:35:15,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 5/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 2 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 29. Up to 17 conditions per place. [2023-08-26 20:35:15,110 INFO L140 encePairwiseOnDemand]: 146/148 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-08-26 20:35:15,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2023-08-26 20:35:15,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:35:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:35:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-08-26 20:35:15,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2023-08-26 20:35:15,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-08-26 20:35:15,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-08-26 20:35:15,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:15,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-08-26 20:35:15,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2023-08-26 20:35:15,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 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) [2023-08-26 20:35:15,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 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) [2023-08-26 20:35:15,132 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 231 transitions. [2023-08-26 20:35:15,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2023-08-26 20:35:15,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 20:35:15,135 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 32 flow [2023-08-26 20:35:15,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-08-26 20:35:15,138 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-08-26 20:35:15,138 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 32 flow [2023-08-26 20:35:15,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2023-08-26 20:35:15,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:15,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:15,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 20:35:15,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 20:35:15,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:15,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1979471635, now seen corresponding path program 1 times [2023-08-26 20:35:15,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:15,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878143827] [2023-08-26 20:35:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:15,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:35:15,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:15,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878143827] [2023-08-26 20:35:15,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878143827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:15,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:15,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 20:35:15,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199329188] [2023-08-26 20:35:15,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:15,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 20:35:15,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 20:35:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-26 20:35:15,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 148 [2023-08-26 20:35:15,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 8 states, 8 states have (on average 46.5) internal successors, (372), 8 states have internal predecessors, (372), 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) [2023-08-26 20:35:15,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:15,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 148 [2023-08-26 20:35:15,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:15,728 INFO L124 PetriNetUnfolderBase]: 9/28 cut-off events. [2023-08-26 20:35:15,728 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 20:35:15,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 1 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 45. Up to 13 conditions per place. [2023-08-26 20:35:15,728 INFO L140 encePairwiseOnDemand]: 144/148 looper letters, 14 selfloop transitions, 5 changer transitions 0/19 dead transitions. [2023-08-26 20:35:15,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 82 flow [2023-08-26 20:35:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 20:35:15,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 20:35:15,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 245 transitions. [2023-08-26 20:35:15,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3310810810810811 [2023-08-26 20:35:15,730 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 245 transitions. [2023-08-26 20:35:15,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 245 transitions. [2023-08-26 20:35:15,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:15,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 245 transitions. [2023-08-26 20:35:15,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 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) [2023-08-26 20:35:15,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 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) [2023-08-26 20:35:15,733 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 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) [2023-08-26 20:35:15,733 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 5 states and 245 transitions. [2023-08-26 20:35:15,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 82 flow [2023-08-26 20:35:15,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:35:15,733 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 58 flow [2023-08-26 20:35:15,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-26 20:35:15,734 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-08-26 20:35:15,734 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 58 flow [2023-08-26 20:35:15,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.5) internal successors, (372), 8 states have internal predecessors, (372), 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) [2023-08-26 20:35:15,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:15,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:15,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 20:35:15,735 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 20:35:15,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:15,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1233626283, now seen corresponding path program 1 times [2023-08-26 20:35:15,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:15,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944423228] [2023-08-26 20:35:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:15,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:35:15,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:15,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944423228] [2023-08-26 20:35:15,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944423228] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:35:15,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132310934] [2023-08-26 20:35:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:15,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:35:15,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:35:15,966 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) [2023-08-26 20:35:16,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 20:35:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:16,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-26 20:35:16,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:35:16,144 INFO L322 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-08-26 20:35:16,147 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-08-26 20:35:16,158 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 [2023-08-26 20:35:16,203 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 [2023-08-26 20:35:16,268 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-26 20:35:16,268 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 19 treesize of output 18 [2023-08-26 20:35:16,329 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-26 20:35:16,329 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 20:35:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:35:16,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:35:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:35:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132310934] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:35:16,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:35:16,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2023-08-26 20:35:16,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832793701] [2023-08-26 20:35:16,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:35:16,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 20:35:16,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:16,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 20:35:16,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-08-26 20:35:16,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 148 [2023-08-26 20:35:16,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 58 flow. Second operand has 18 states, 18 states have (on average 42.0) internal successors, (756), 18 states have internal predecessors, (756), 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) [2023-08-26 20:35:16,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:16,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 148 [2023-08-26 20:35:16,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:16,738 INFO L124 PetriNetUnfolderBase]: 14/45 cut-off events. [2023-08-26 20:35:16,738 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 20:35:16,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 45 events. 14/45 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 1 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 113. Up to 14 conditions per place. [2023-08-26 20:35:16,739 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 17 selfloop transitions, 8 changer transitions 5/30 dead transitions. [2023-08-26 20:35:16,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 163 flow [2023-08-26 20:35:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 20:35:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 20:35:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 393 transitions. [2023-08-26 20:35:16,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29504504504504503 [2023-08-26 20:35:16,741 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 393 transitions. [2023-08-26 20:35:16,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 393 transitions. [2023-08-26 20:35:16,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:16,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 393 transitions. [2023-08-26 20:35:16,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 43.666666666666664) internal successors, (393), 9 states have internal predecessors, (393), 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) [2023-08-26 20:35:16,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 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) [2023-08-26 20:35:16,744 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 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) [2023-08-26 20:35:16,744 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 58 flow. Second operand 9 states and 393 transitions. [2023-08-26 20:35:16,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 163 flow [2023-08-26 20:35:16,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 157 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 20:35:16,746 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 98 flow [2023-08-26 20:35:16,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=98, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-08-26 20:35:16,746 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 14 predicate places. [2023-08-26 20:35:16,746 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 98 flow [2023-08-26 20:35:16,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.0) internal successors, (756), 18 states have internal predecessors, (756), 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) [2023-08-26 20:35:16,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:16,747 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:16,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 20:35:16,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:35:16,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 20:35:16,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1523647213, now seen corresponding path program 2 times [2023-08-26 20:35:16,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:16,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142203311] [2023-08-26 20:35:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:16,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:35:17,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:17,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142203311] [2023-08-26 20:35:17,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142203311] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:35:17,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510739206] [2023-08-26 20:35:17,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 20:35:17,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:35:17,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:35:17,374 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) [2023-08-26 20:35:17,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 20:35:17,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 20:35:17,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 20:35:17,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-26 20:35:17,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:35:17,494 INFO L322 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2023-08-26 20:35:17,495 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 46 [2023-08-26 20:35:17,505 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2023-08-26 20:35:17,540 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 20:35:17,540 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 20:35:17,568 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 [2023-08-26 20:35:17,638 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 [2023-08-26 20:35:17,686 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 [2023-08-26 20:35:17,714 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 [2023-08-26 20:35:17,747 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 [2023-08-26 20:35:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:35:17,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:35:17,794 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2023-08-26 20:35:17,798 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-08-26 20:35:17,802 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-08-26 20:35:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2023-08-26 20:35:17,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510739206] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:35:17,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:35:17,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-08-26 20:35:17,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430090655] [2023-08-26 20:35:17,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:35:17,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-26 20:35:17,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:17,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-26 20:35:17,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=484, Unknown=10, NotChecked=138, Total=702 [2023-08-26 20:35:17,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 148 [2023-08-26 20:35:17,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 98 flow. Second operand has 27 states, 27 states have (on average 40.629629629629626) internal successors, (1097), 27 states have internal predecessors, (1097), 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) [2023-08-26 20:35:17,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:17,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 148 [2023-08-26 20:35:17,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:18,498 INFO L124 PetriNetUnfolderBase]: 17/52 cut-off events. [2023-08-26 20:35:18,498 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-08-26 20:35:18,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 52 events. 17/52 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 1 based on Foata normal form. 4/56 useless extension candidates. Maximal degree in co-relation 194. Up to 18 conditions per place. [2023-08-26 20:35:18,499 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 16 selfloop transitions, 18 changer transitions 4/38 dead transitions. [2023-08-26 20:35:18,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 274 flow [2023-08-26 20:35:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 20:35:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 20:35:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 548 transitions. [2023-08-26 20:35:18,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28482328482328484 [2023-08-26 20:35:18,503 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 548 transitions. [2023-08-26 20:35:18,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 548 transitions. [2023-08-26 20:35:18,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:18,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 548 transitions. [2023-08-26 20:35:18,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 42.15384615384615) internal successors, (548), 13 states have internal predecessors, (548), 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) [2023-08-26 20:35:18,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 148.0) internal successors, (2072), 14 states have internal predecessors, (2072), 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) [2023-08-26 20:35:18,506 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 148.0) internal successors, (2072), 14 states have internal predecessors, (2072), 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) [2023-08-26 20:35:18,506 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 98 flow. Second operand 13 states and 548 transitions. [2023-08-26 20:35:18,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 274 flow [2023-08-26 20:35:18,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 236 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-08-26 20:35:18,508 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 175 flow [2023-08-26 20:35:18,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=175, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-08-26 20:35:18,508 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 22 predicate places. [2023-08-26 20:35:18,508 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 175 flow [2023-08-26 20:35:18,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 40.629629629629626) internal successors, (1097), 27 states have internal predecessors, (1097), 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) [2023-08-26 20:35:18,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:18,509 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:18,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 20:35:18,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-26 20:35:18,714 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 20:35:18,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:18,714 INFO L85 PathProgramCache]: Analyzing trace with hash 11124395, now seen corresponding path program 3 times [2023-08-26 20:35:18,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:18,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463160495] [2023-08-26 20:35:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:18,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:19,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:35:19,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:19,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463160495] [2023-08-26 20:35:19,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463160495] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:35:19,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37230941] [2023-08-26 20:35:19,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 20:35:19,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:35:19,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:35:19,047 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) [2023-08-26 20:35:19,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 20:35:19,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-26 20:35:19,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 20:35:19,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 60 conjunts are in the unsatisfiable core [2023-08-26 20:35:19,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:35:19,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 20:35:19,146 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 [2023-08-26 20:35:19,159 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-26 20:35:19,159 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-08-26 20:35:19,190 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 [2023-08-26 20:35:19,250 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-26 20:35:19,250 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 19 treesize of output 18 [2023-08-26 20:35:19,296 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-26 20:35:19,296 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 20:35:19,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 20:35:19,370 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-26 20:35:19,371 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 20:35:19,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 20:35:19,413 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-26 20:35:19,413 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 20:35:19,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 20:35:19,454 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-26 20:35:19,454 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 20:35:19,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 20:35:19,496 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-26 20:35:19,496 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 20:35:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:35:19,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:35:39,758 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_169 Int) (v_ArrVal_167 Int) (v_ArrVal_166 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_57| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_56| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_59| Int) (v_ArrVal_171 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_58| Int)) (or (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_166) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_59| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_167) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_58| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_169) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_57| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_171) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_56| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) 0)) c_~v~0.base) c_~v~0.offset)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_57| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_58| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_58| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_59| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_56| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_57| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_59| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 1)))) is different from false [2023-08-26 20:35:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 2 times theorem prover too weak. 0 trivial. 5 not checked. [2023-08-26 20:35:52,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37230941] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:35:52,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:35:52,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 29 [2023-08-26 20:35:52,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876821639] [2023-08-26 20:35:52,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:35:52,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-26 20:35:52,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:52,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-26 20:35:52,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=680, Unknown=13, NotChecked=54, Total=870 [2023-08-26 20:35:52,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 148 [2023-08-26 20:35:52,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 175 flow. Second operand has 30 states, 30 states have (on average 40.6) internal successors, (1218), 30 states have internal predecessors, (1218), 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) [2023-08-26 20:35:52,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:52,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 148 [2023-08-26 20:35:52,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:59,503 WARN L234 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 79 DAG size of output: 77 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 20:36:13,160 WARN L234 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 78 DAG size of output: 76 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 20:36:30,000 WARN L234 SmtUtils]: Spent 9.92s on a formula simplification. DAG size of input: 79 DAG size of output: 77 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 20:36:38,742 INFO L124 PetriNetUnfolderBase]: 11/43 cut-off events. [2023-08-26 20:36:38,742 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-26 20:36:38,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 43 events. 11/43 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 1 based on Foata normal form. 5/48 useless extension candidates. Maximal degree in co-relation 154. Up to 11 conditions per place. [2023-08-26 20:36:38,742 INFO L140 encePairwiseOnDemand]: 142/148 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2023-08-26 20:36:38,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 32 transitions, 242 flow [2023-08-26 20:36:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 20:36:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 20:36:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 577 transitions. [2023-08-26 20:36:38,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2784749034749035 [2023-08-26 20:36:38,744 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 577 transitions. [2023-08-26 20:36:38,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 577 transitions. [2023-08-26 20:36:38,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:36:38,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 577 transitions. [2023-08-26 20:36:38,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 41.214285714285715) internal successors, (577), 14 states have internal predecessors, (577), 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) [2023-08-26 20:36:38,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 148.0) internal successors, (2220), 15 states have internal predecessors, (2220), 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) [2023-08-26 20:36:38,748 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 148.0) internal successors, (2220), 15 states have internal predecessors, (2220), 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) [2023-08-26 20:36:38,748 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 175 flow. Second operand 14 states and 577 transitions. [2023-08-26 20:36:38,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 32 transitions, 242 flow [2023-08-26 20:36:38,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 32 transitions, 188 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-08-26 20:36:38,749 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-26 20:36:38,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-26 20:36:38,750 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 24 predicate places. [2023-08-26 20:36:38,750 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-26 20:36:38,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 40.6) internal successors, (1218), 30 states have internal predecessors, (1218), 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) [2023-08-26 20:36:38,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2023-08-26 20:36:38,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-26 20:36:38,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-26 20:36:38,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 20:36:38,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:36:38,958 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-26 20:36:38,960 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 20:36:38,960 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 20:36:38,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 08:36:38 BasicIcfg [2023-08-26 20:36:38,962 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 20:36:38,962 INFO L158 Benchmark]: Toolchain (without parser) took 87258.79ms. Allocated memory was 350.2MB in the beginning and 446.7MB in the end (delta: 96.5MB). Free memory was 323.5MB in the beginning and 166.2MB in the end (delta: 157.3MB). Peak memory consumption was 253.4MB. Max. memory is 16.0GB. [2023-08-26 20:36:38,962 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 350.2MB. Free memory is still 326.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 20:36:38,962 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.57ms. Allocated memory is still 350.2MB. Free memory was 323.0MB in the beginning and 290.8MB in the end (delta: 32.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-26 20:36:38,962 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.73ms. Allocated memory is still 350.2MB. Free memory was 290.8MB in the beginning and 288.3MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 20:36:38,963 INFO L158 Benchmark]: Boogie Preprocessor took 15.73ms. Allocated memory is still 350.2MB. Free memory was 288.3MB in the beginning and 286.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 20:36:38,963 INFO L158 Benchmark]: RCFGBuilder took 239.39ms. Allocated memory is still 350.2MB. Free memory was 286.7MB in the beginning and 272.6MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 20:36:38,963 INFO L158 Benchmark]: TraceAbstraction took 86505.34ms. Allocated memory was 350.2MB in the beginning and 446.7MB in the end (delta: 96.5MB). Free memory was 272.1MB in the beginning and 166.2MB in the end (delta: 105.9MB). Peak memory consumption was 201.0MB. Max. memory is 16.0GB. [2023-08-26 20:36:38,964 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 350.2MB. Free memory is still 326.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 464.57ms. Allocated memory is still 350.2MB. Free memory was 323.0MB in the beginning and 290.8MB in the end (delta: 32.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.73ms. Allocated memory is still 350.2MB. Free memory was 290.8MB in the beginning and 288.3MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 15.73ms. Allocated memory is still 350.2MB. Free memory was 288.3MB in the beginning and 286.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 239.39ms. Allocated memory is still 350.2MB. Free memory was 286.7MB in the beginning and 272.6MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 86505.34ms. Allocated memory was 350.2MB in the beginning and 446.7MB in the end (delta: 96.5MB). Free memory was 272.1MB in the beginning and 166.2MB in the end (delta: 105.9MB). Peak memory consumption was 201.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 274]: Unsoundness Warning unspecified type, defaulting to int C: short [274] - GenericResultAtLocation [Line: 274]: Unsoundness Warning unspecified type, defaulting to int C: short [274] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 75 PlacesBefore, 19 PlacesAfterwards, 71 TransitionsBefore, 14 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 151, independent: 141, independent conditional: 0, independent unconditional: 141, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 88, independent: 84, independent conditional: 0, independent unconditional: 84, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 151, independent: 57, independent conditional: 0, independent unconditional: 57, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 88, unknown conditional: 0, unknown unconditional: 88] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, 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 - PositiveResult [Line: 20]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 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: 86.4s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 46.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 56 mSolverCounterUnknown, 159 SdHoareTripleChecker+Valid, 21.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 159 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 21.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 130 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 804 IncrementalHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 0 mSDtfsCounter, 804 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 50 SyntacticMatches, 6 SemanticMatches, 106 ConstructedPredicates, 4 IntricatePredicates, 5 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 59.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175occurred in iteration=4, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 36.1s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 150 ConstructedInterpolants, 24 QuantifiedInterpolants, 2464 SizeOfPredicates, 27 NumberOfNonLiveVariables, 612 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 10/78 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 20:36:39,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...