/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 -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 00:16:23,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 00:16:23,567 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 00:16:23,571 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 00:16:23,572 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 00:16:23,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 00:16:23,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 00:16:23,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 00:16:23,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 00:16:23,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 00:16:23,612 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 00:16:23,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 00:16:23,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 00:16:23,612 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 00:16:23,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 00:16:23,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 00:16:23,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 00:16:23,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 00:16:23,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 00:16:23,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 00:16:23,614 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 00:16:23,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 00:16:23,616 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 00:16:23,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 00:16:23,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 00:16:23,617 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 00:16:23,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 00:16:23,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:16:23,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 00:16:23,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 00:16:23,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 00:16:23,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 00:16:23,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 00:16:23,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 00:16:23,619 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 00:16:23,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 00:16:23,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 00:16:23,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 00:16:23,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 00:16:23,920 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 00:16:23,921 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 00:16:23,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-24 00:16:25,139 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 00:16:25,470 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 00:16:25,471 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-24 00:16:25,486 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b0ebd91f/c63df9778d0e453dbb81eeccc703516c/FLAG063416fff [2023-08-24 00:16:25,502 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b0ebd91f/c63df9778d0e453dbb81eeccc703516c [2023-08-24 00:16:25,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 00:16:25,508 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 00:16:25,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 00:16:25,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 00:16:25,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 00:16:25,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:16:25" (1/1) ... [2023-08-24 00:16:25,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48859656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:25, skipping insertion in model container [2023-08-24 00:16:25,515 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:16:25" (1/1) ... [2023-08-24 00:16:25,579 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 00:16:25,937 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2023-08-24 00:16:25,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:16:26,069 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 00:16:26,093 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 00:16:26,095 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 00:16:26,115 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2023-08-24 00:16:26,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:16:26,198 INFO L206 MainTranslator]: Completed translation [2023-08-24 00:16:26,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:26 WrapperNode [2023-08-24 00:16:26,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 00:16:26,200 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 00:16:26,200 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 00:16:26,200 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 00:16:26,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:26" (1/1) ... [2023-08-24 00:16:26,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:26" (1/1) ... [2023-08-24 00:16:26,281 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 233 [2023-08-24 00:16:26,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 00:16:26,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 00:16:26,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 00:16:26,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 00:16:26,291 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:26" (1/1) ... [2023-08-24 00:16:26,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:26" (1/1) ... [2023-08-24 00:16:26,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:26" (1/1) ... [2023-08-24 00:16:26,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:26" (1/1) ... [2023-08-24 00:16:26,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:26" (1/1) ... [2023-08-24 00:16:26,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:26" (1/1) ... [2023-08-24 00:16:26,339 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:26" (1/1) ... [2023-08-24 00:16:26,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:26" (1/1) ... [2023-08-24 00:16:26,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 00:16:26,344 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 00:16:26,344 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 00:16:26,344 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 00:16:26,345 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:26" (1/1) ... [2023-08-24 00:16:26,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:16:26,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:16:26,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 00:16:26,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 00:16:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 00:16:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-24 00:16:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-24 00:16:26,419 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-24 00:16:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 00:16:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 00:16:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-24 00:16:26,419 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-24 00:16:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 00:16:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 00:16:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 00:16:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 00:16:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-24 00:16:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 00:16:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 00:16:26,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 00:16:26,439 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 00:16:26,602 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 00:16:26,604 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 00:16:26,884 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 00:16:26,891 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 00:16:26,892 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-24 00:16:26,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:16:26 BoogieIcfgContainer [2023-08-24 00:16:26,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 00:16:26,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 00:16:26,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 00:16:26,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 00:16:26,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 12:16:25" (1/3) ... [2023-08-24 00:16:26,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a221be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:16:26, skipping insertion in model container [2023-08-24 00:16:26,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:26" (2/3) ... [2023-08-24 00:16:26,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a221be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:16:26, skipping insertion in model container [2023-08-24 00:16:26,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:16:26" (3/3) ... [2023-08-24 00:16:26,904 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-08-24 00:16:26,921 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 00:16:26,922 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 00:16:26,922 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 00:16:27,039 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 00:16:27,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 234 transitions, 490 flow [2023-08-24 00:16:27,241 INFO L124 PetriNetUnfolderBase]: 54/442 cut-off events. [2023-08-24 00:16:27,242 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-24 00:16:27,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 442 events. 54/442 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1808 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-08-24 00:16:27,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 234 transitions, 490 flow [2023-08-24 00:16:27,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 232 transitions, 480 flow [2023-08-24 00:16:27,264 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 00:16:27,276 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 214 places, 232 transitions, 480 flow [2023-08-24 00:16:27,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 214 places, 232 transitions, 480 flow [2023-08-24 00:16:27,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 232 transitions, 480 flow [2023-08-24 00:16:27,358 INFO L124 PetriNetUnfolderBase]: 50/430 cut-off events. [2023-08-24 00:16:27,358 INFO L125 PetriNetUnfolderBase]: For 4/8 co-relation queries the response was YES. [2023-08-24 00:16:27,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 430 events. 50/430 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1732 event pairs, 0 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2023-08-24 00:16:27,373 INFO L119 LiptonReduction]: Number of co-enabled transitions 16132 [2023-08-24 00:16:32,543 INFO L134 LiptonReduction]: Checked pairs total: 23801 [2023-08-24 00:16:32,544 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-08-24 00:16:32,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 00:16:32,559 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;@4896f8fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 00:16:32,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 00:16:32,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 00:16:32,563 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-08-24 00:16:32,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 00:16:32,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:16:32,564 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-24 00:16:32,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:16:32,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:16:32,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1510651644, now seen corresponding path program 1 times [2023-08-24 00:16:32,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:16:32,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539426905] [2023-08-24 00:16:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:16:32,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:16:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:16:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:32,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:16:32,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539426905] [2023-08-24 00:16:32,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539426905] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:16:32,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:16:32,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 00:16:32,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419615798] [2023-08-24 00:16:32,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:16:32,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 00:16:32,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:16:32,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 00:16:32,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 00:16:32,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 422 [2023-08-24 00:16:32,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:32,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:16:32,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 422 [2023-08-24 00:16:32,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:16:33,447 INFO L124 PetriNetUnfolderBase]: 3149/5351 cut-off events. [2023-08-24 00:16:33,447 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-08-24 00:16:33,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10341 conditions, 5351 events. 3149/5351 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30516 event pairs, 2924 based on Foata normal form. 276/4719 useless extension candidates. Maximal degree in co-relation 9337. Up to 4918 conditions per place. [2023-08-24 00:16:33,470 INFO L140 encePairwiseOnDemand]: 408/422 looper letters, 46 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-24 00:16:33,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 222 flow [2023-08-24 00:16:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 00:16:33,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 00:16:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2023-08-24 00:16:33,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523696682464455 [2023-08-24 00:16:33,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2023-08-24 00:16:33,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2023-08-24 00:16:33,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:16:33,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2023-08-24 00:16:33,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:33,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:33,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:33,499 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 146 flow. Second operand 3 states and 663 transitions. [2023-08-24 00:16:33,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 222 flow [2023-08-24 00:16:33,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 00:16:33,505 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 136 flow [2023-08-24 00:16:33,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-08-24 00:16:33,509 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-24 00:16:33,509 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 136 flow [2023-08-24 00:16:33,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:33,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:16:33,510 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-24 00:16:33,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 00:16:33,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:16:33,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:16:33,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1829540645, now seen corresponding path program 1 times [2023-08-24 00:16:33,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:16:33,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645110217] [2023-08-24 00:16:33,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:16:33,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:16:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:16:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:33,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:16:33,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645110217] [2023-08-24 00:16:33,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645110217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:16:33,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836675526] [2023-08-24 00:16:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:16:33,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:16:33,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:16:33,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:16:33,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 00:16:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:16:33,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-24 00:16:33,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:16:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:33,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:16:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:33,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836675526] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:16:33,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:16:33,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-24 00:16:33,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453092906] [2023-08-24 00:16:33,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:16:33,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 00:16:33,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:16:33,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 00:16:33,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 00:16:33,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 422 [2023-08-24 00:16:33,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 202.57142857142858) internal successors, (1418), 7 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:33,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:16:33,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 422 [2023-08-24 00:16:33,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:16:34,432 INFO L124 PetriNetUnfolderBase]: 3149/5354 cut-off events. [2023-08-24 00:16:34,432 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-08-24 00:16:34,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10357 conditions, 5354 events. 3149/5354 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30535 event pairs, 2924 based on Foata normal form. 0/4446 useless extension candidates. Maximal degree in co-relation 10344. Up to 4918 conditions per place. [2023-08-24 00:16:34,456 INFO L140 encePairwiseOnDemand]: 419/422 looper letters, 46 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-08-24 00:16:34,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 250 flow [2023-08-24 00:16:34,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 00:16:34,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 00:16:34,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1260 transitions. [2023-08-24 00:16:34,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976303317535545 [2023-08-24 00:16:34,460 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1260 transitions. [2023-08-24 00:16:34,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1260 transitions. [2023-08-24 00:16:34,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:16:34,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1260 transitions. [2023-08-24 00:16:34,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:34,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:34,478 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:34,478 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 136 flow. Second operand 6 states and 1260 transitions. [2023-08-24 00:16:34,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 250 flow [2023-08-24 00:16:34,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 246 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 00:16:34,482 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 168 flow [2023-08-24 00:16:34,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-24 00:16:34,484 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2023-08-24 00:16:34,484 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 168 flow [2023-08-24 00:16:34,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.57142857142858) internal successors, (1418), 7 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:34,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:16:34,486 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-24 00:16:34,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 00:16:34,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:16:34,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:16:34,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:16:34,698 INFO L85 PathProgramCache]: Analyzing trace with hash -105580228, now seen corresponding path program 2 times [2023-08-24 00:16:34,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:16:34,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832279669] [2023-08-24 00:16:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:16:34,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:16:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:16:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:34,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:16:34,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832279669] [2023-08-24 00:16:34,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832279669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:16:34,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306136956] [2023-08-24 00:16:34,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 00:16:34,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:16:34,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:16:34,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:16:34,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 00:16:35,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 00:16:35,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:16:35,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 00:16:35,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:16:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:35,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:16:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:35,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306136956] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:16:35,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:16:35,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-24 00:16:35,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583400508] [2023-08-24 00:16:35,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:16:35,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 00:16:35,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:16:35,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 00:16:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-24 00:16:35,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 422 [2023-08-24 00:16:35,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 168 flow. Second operand has 13 states, 13 states have (on average 202.30769230769232) internal successors, (2630), 13 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:35,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:16:35,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 422 [2023-08-24 00:16:35,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:16:35,768 INFO L124 PetriNetUnfolderBase]: 3149/5360 cut-off events. [2023-08-24 00:16:35,768 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-08-24 00:16:35,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10394 conditions, 5360 events. 3149/5360 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30529 event pairs, 2924 based on Foata normal form. 6/4459 useless extension candidates. Maximal degree in co-relation 10335. Up to 4918 conditions per place. [2023-08-24 00:16:35,788 INFO L140 encePairwiseOnDemand]: 419/422 looper letters, 46 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2023-08-24 00:16:35,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 318 flow [2023-08-24 00:16:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 00:16:35,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 00:16:35,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2475 transitions. [2023-08-24 00:16:35,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4887440758293839 [2023-08-24 00:16:35,795 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2475 transitions. [2023-08-24 00:16:35,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2475 transitions. [2023-08-24 00:16:35,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:16:35,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2475 transitions. [2023-08-24 00:16:35,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 206.25) internal successors, (2475), 12 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:35,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 422.0) internal successors, (5486), 13 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:35,811 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 422.0) internal successors, (5486), 13 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:35,811 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 168 flow. Second operand 12 states and 2475 transitions. [2023-08-24 00:16:35,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 318 flow [2023-08-24 00:16:35,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 304 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-24 00:16:35,814 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 238 flow [2023-08-24 00:16:35,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=238, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2023-08-24 00:16:35,815 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2023-08-24 00:16:35,815 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 238 flow [2023-08-24 00:16:35,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 202.30769230769232) internal successors, (2630), 13 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:35,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:16:35,817 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-24 00:16:35,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 00:16:36,022 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,SelfDestructingSolverStorable2 [2023-08-24 00:16:36,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:16:36,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:16:36,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1701347484, now seen corresponding path program 3 times [2023-08-24 00:16:36,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:16:36,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361959471] [2023-08-24 00:16:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:16:36,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:16:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:16:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:36,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:16:36,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361959471] [2023-08-24 00:16:36,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361959471] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:16:36,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248623342] [2023-08-24 00:16:36,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 00:16:36,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:16:36,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:16:36,507 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:16:36,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 00:19:20,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-24 00:19:20,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:19:20,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 00:19:20,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:19:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:19:20,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:19:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:19:21,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248623342] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:19:21,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:19:21,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-24 00:19:21,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789363011] [2023-08-24 00:19:21,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:19:21,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 00:19:21,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:19:21,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 00:19:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-24 00:19:21,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 422 [2023-08-24 00:19:21,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 238 flow. Second operand has 25 states, 25 states have (on average 202.16) internal successors, (5054), 25 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:21,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:19:21,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 422 [2023-08-24 00:19:21,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:19:21,898 INFO L124 PetriNetUnfolderBase]: 3149/5372 cut-off events. [2023-08-24 00:19:21,898 INFO L125 PetriNetUnfolderBase]: For 562/562 co-relation queries the response was YES. [2023-08-24 00:19:21,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10478 conditions, 5372 events. 3149/5372 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30525 event pairs, 2924 based on Foata normal form. 12/4477 useless extension candidates. Maximal degree in co-relation 10341. Up to 4918 conditions per place. [2023-08-24 00:19:21,925 INFO L140 encePairwiseOnDemand]: 419/422 looper letters, 46 selfloop transitions, 23 changer transitions 0/76 dead transitions. [2023-08-24 00:19:21,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 76 transitions, 472 flow [2023-08-24 00:19:21,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 00:19:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 00:19:21,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4905 transitions. [2023-08-24 00:19:21,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843009478672986 [2023-08-24 00:19:21,940 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4905 transitions. [2023-08-24 00:19:21,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4905 transitions. [2023-08-24 00:19:21,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:19:21,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4905 transitions. [2023-08-24 00:19:21,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 204.375) internal successors, (4905), 24 states have internal predecessors, (4905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:21,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 422.0) internal successors, (10550), 25 states have internal predecessors, (10550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:21,969 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 422.0) internal successors, (10550), 25 states have internal predecessors, (10550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:21,969 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 238 flow. Second operand 24 states and 4905 transitions. [2023-08-24 00:19:21,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 76 transitions, 472 flow [2023-08-24 00:19:21,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 76 transitions, 400 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-24 00:19:21,976 INFO L231 Difference]: Finished difference. Result has 110 places, 76 transitions, 358 flow [2023-08-24 00:19:21,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=358, PETRI_PLACES=110, PETRI_TRANSITIONS=76} [2023-08-24 00:19:21,978 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2023-08-24 00:19:21,978 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 76 transitions, 358 flow [2023-08-24 00:19:21,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 202.16) internal successors, (5054), 25 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:21,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:19:21,980 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-08-24 00:19:22,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 00:19:22,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:19:22,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:19:22,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:19:22,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1060403036, now seen corresponding path program 4 times [2023-08-24 00:19:22,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:19:22,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334741287] [2023-08-24 00:19:22,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:19:22,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:19:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:19:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:19:23,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:19:23,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334741287] [2023-08-24 00:19:23,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334741287] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:19:23,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653398044] [2023-08-24 00:19:23,497 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 00:19:23,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:19:23,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:19:23,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:19:23,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 00:19:23,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 00:19:23,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:19:23,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-24 00:19:23,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:19:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:19:23,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:19:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:19:24,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653398044] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:19:24,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:19:24,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-24 00:19:24,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591958502] [2023-08-24 00:19:24,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:19:24,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-24 00:19:24,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:19:24,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-24 00:19:24,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-24 00:19:24,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 422 [2023-08-24 00:19:24,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 76 transitions, 358 flow. Second operand has 49 states, 49 states have (on average 202.08163265306123) internal successors, (9902), 49 states have internal predecessors, (9902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:24,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:19:24,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 422 [2023-08-24 00:19:24,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:19:25,706 INFO L124 PetriNetUnfolderBase]: 3149/5396 cut-off events. [2023-08-24 00:19:25,707 INFO L125 PetriNetUnfolderBase]: For 5332/5332 co-relation queries the response was YES. [2023-08-24 00:19:25,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10622 conditions, 5396 events. 3149/5396 cut-off events. For 5332/5332 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30525 event pairs, 2924 based on Foata normal form. 24/4513 useless extension candidates. Maximal degree in co-relation 10353. Up to 4918 conditions per place. [2023-08-24 00:19:25,757 INFO L140 encePairwiseOnDemand]: 419/422 looper letters, 46 selfloop transitions, 47 changer transitions 0/100 dead transitions. [2023-08-24 00:19:25,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 100 transitions, 736 flow [2023-08-24 00:19:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-24 00:19:25,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-24 00:19:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 9765 transitions. [2023-08-24 00:19:25,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48207938388625593 [2023-08-24 00:19:25,786 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 9765 transitions. [2023-08-24 00:19:25,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 9765 transitions. [2023-08-24 00:19:25,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:19:25,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 9765 transitions. [2023-08-24 00:19:25,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 203.4375) internal successors, (9765), 48 states have internal predecessors, (9765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:25,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 422.0) internal successors, (20678), 49 states have internal predecessors, (20678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:25,914 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 422.0) internal successors, (20678), 49 states have internal predecessors, (20678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:25,914 INFO L175 Difference]: Start difference. First operand has 110 places, 76 transitions, 358 flow. Second operand 48 states and 9765 transitions. [2023-08-24 00:19:25,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 100 transitions, 736 flow [2023-08-24 00:19:25,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 100 transitions, 592 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-08-24 00:19:25,923 INFO L231 Difference]: Finished difference. Result has 170 places, 100 transitions, 598 flow [2023-08-24 00:19:25,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=598, PETRI_PLACES=170, PETRI_TRANSITIONS=100} [2023-08-24 00:19:25,926 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2023-08-24 00:19:25,926 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 100 transitions, 598 flow [2023-08-24 00:19:25,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 202.08163265306123) internal successors, (9902), 49 states have internal predecessors, (9902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:19:25,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:19:25,928 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-08-24 00:19:25,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 00:19:26,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:19:26,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:19:26,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:19:26,138 INFO L85 PathProgramCache]: Analyzing trace with hash 34079964, now seen corresponding path program 5 times [2023-08-24 00:19:26,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:19:26,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696775203] [2023-08-24 00:19:26,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:19:26,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:19:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:19:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:19:29,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:19:29,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696775203] [2023-08-24 00:19:29,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696775203] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:19:29,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703538735] [2023-08-24 00:19:29,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 00:19:29,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:19:29,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:19:29,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:19:29,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-08-24 00:31:00,890 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 00:31:00,890 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 00:31:01,904 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 [2023-08-24 00:31:02,091 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-08-24 00:31:02,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-08-24 00:31:02,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 00:31:02,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-24 00:31:02,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2023-08-24 00:31:02,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803997992] [2023-08-24 00:31:02,132 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-24 00:31:02,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-24 00:31:02,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:31:02,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-24 00:31:02,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-24 00:31:02,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 422 [2023-08-24 00:31:02,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 100 transitions, 598 flow. Second operand has 49 states, 49 states have (on average 202.0408163265306) internal successors, (9900), 49 states have internal predecessors, (9900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:31:02,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:31:02,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 422 [2023-08-24 00:31:02,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:31:02,144 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-24 00:31:02,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 00:31:02,144 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-24 00:31:02,146 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-24 00:31:02,146 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 00:31:02,146 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-24 00:31:02,146 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-08-24 00:31:02,150 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 00:31:02,150 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 00:31:02,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 12:31:02 BasicIcfg [2023-08-24 00:31:02,153 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 00:31:02,153 INFO L158 Benchmark]: Toolchain (without parser) took 876645.15ms. Allocated memory was 373.3MB in the beginning and 549.5MB in the end (delta: 176.2MB). Free memory was 347.3MB in the beginning and 306.6MB in the end (delta: 40.7MB). Peak memory consumption was 219.2MB. Max. memory is 16.0GB. [2023-08-24 00:31:02,154 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 373.3MB. Free memory is still 349.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 00:31:02,154 INFO L158 Benchmark]: CACSL2BoogieTranslator took 688.91ms. Allocated memory is still 373.3MB. Free memory was 346.8MB in the beginning and 309.3MB in the end (delta: 37.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-24 00:31:02,154 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.61ms. Allocated memory is still 373.3MB. Free memory was 309.3MB in the beginning and 306.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 00:31:02,154 INFO L158 Benchmark]: Boogie Preprocessor took 61.53ms. Allocated memory is still 373.3MB. Free memory was 306.1MB in the beginning and 304.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 00:31:02,155 INFO L158 Benchmark]: RCFGBuilder took 549.87ms. Allocated memory is still 373.3MB. Free memory was 304.0MB in the beginning and 330.3MB in the end (delta: -26.3MB). Peak memory consumption was 10.0MB. Max. memory is 16.0GB. [2023-08-24 00:31:02,155 INFO L158 Benchmark]: TraceAbstraction took 875257.45ms. Allocated memory was 373.3MB in the beginning and 549.5MB in the end (delta: 176.2MB). Free memory was 329.2MB in the beginning and 306.6MB in the end (delta: 22.6MB). Peak memory consumption was 198.7MB. Max. memory is 16.0GB. [2023-08-24 00:31:02,157 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 373.3MB. Free memory is still 349.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 688.91ms. Allocated memory is still 373.3MB. Free memory was 346.8MB in the beginning and 309.3MB in the end (delta: 37.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 81.61ms. Allocated memory is still 373.3MB. Free memory was 309.3MB in the beginning and 306.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 61.53ms. Allocated memory is still 373.3MB. Free memory was 306.1MB in the beginning and 304.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 549.87ms. Allocated memory is still 373.3MB. Free memory was 304.0MB in the beginning and 330.3MB in the end (delta: -26.3MB). Peak memory consumption was 10.0MB. Max. memory is 16.0GB. * TraceAbstraction took 875257.45ms. Allocated memory was 373.3MB in the beginning and 549.5MB in the end (delta: 176.2MB). Free memory was 329.2MB in the beginning and 306.6MB in the end (delta: 22.6MB). Peak memory consumption was 198.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3s, 214 PlacesBefore, 54 PlacesAfterwards, 232 TransitionsBefore, 65 TransitionsAfterwards, 16132 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 114 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 20 ConcurrentYvCompositions, 7 ChoiceCompositions, 188 TotalNumberOfCompositions, 23801 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13893, independent: 13570, independent conditional: 0, independent unconditional: 13570, dependent: 323, dependent conditional: 0, dependent unconditional: 323, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8304, independent: 8221, independent conditional: 0, independent unconditional: 8221, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13893, independent: 5349, independent conditional: 0, independent unconditional: 5349, dependent: 240, dependent conditional: 0, dependent unconditional: 240, unknown: 8304, unknown conditional: 0, unknown unconditional: 8304] , Statistics on independence cache: Total cache size (in pairs): 368, Positive cache size: 334, Positive conditional cache size: 0, Positive unconditional cache size: 334, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1049]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1050]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 320 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 875.1s, OverallIterations: 6, TraceHistogramMax: 46, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1177 IncrementalHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 1177 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=598occurred in iteration=5, InterpolantAutomatonStates: 93, 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: 0.2s SsaConstructionTime, 164.7s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2961 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 14 InterpolantComputations, 1 PerfectInterpolantSequences, 28/2066 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown