/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 13:05:17,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 13:05:17,641 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 13:05:17,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 13:05:17,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 13:05:17,678 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 13:05:17,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 13:05:17,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 13:05:17,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 13:05:17,683 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 13:05:17,683 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 13:05:17,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 13:05:17,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 13:05:17,685 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 13:05:17,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 13:05:17,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 13:05:17,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 13:05:17,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 13:05:17,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 13:05:17,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 13:05:17,686 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 13:05:17,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 13:05:17,687 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 13:05:17,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 13:05:17,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 13:05:17,688 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 13:05:17,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 13:05:17,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:05:17,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 13:05:17,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 13:05:17,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 13:05:17,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 13:05:17,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 13:05:17,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 13:05:17,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 13:05:17,691 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 13:05:18,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 13:05:18,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 13:05:18,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 13:05:18,063 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 13:05:18,063 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 13:05:18,064 INFO L431 ainManager$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 13:05:19,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 13:05:19,620 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 13:05:19,620 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-24 13:05:19,643 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36dd2d695/767fac557abb43e7a239587166bfd092/FLAGb6dd9de7b [2023-08-24 13:05:19,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36dd2d695/767fac557abb43e7a239587166bfd092 [2023-08-24 13:05:19,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 13:05:19,658 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 13:05:19,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 13:05:19,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 13:05:19,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 13:05:19,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:05:19" (1/1) ... [2023-08-24 13:05:19,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c3d5924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:19, skipping insertion in model container [2023-08-24 13:05:19,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:05:19" (1/1) ... [2023-08-24 13:05:19,708 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 13:05:20,069 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 13:05:20,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:05:20,183 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 13:05:20,213 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 13:05:20,215 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 13:05:20,236 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 13:05:20,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:05:20,334 INFO L206 MainTranslator]: Completed translation [2023-08-24 13:05:20,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:20 WrapperNode [2023-08-24 13:05:20,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 13:05:20,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 13:05:20,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 13:05:20,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 13:05:20,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:20" (1/1) ... [2023-08-24 13:05:20,361 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:20" (1/1) ... [2023-08-24 13:05:20,389 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 233 [2023-08-24 13:05:20,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 13:05:20,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 13:05:20,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 13:05:20,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 13:05:20,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:20" (1/1) ... [2023-08-24 13:05:20,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:20" (1/1) ... [2023-08-24 13:05:20,403 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:20" (1/1) ... [2023-08-24 13:05:20,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:20" (1/1) ... [2023-08-24 13:05:20,413 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:20" (1/1) ... [2023-08-24 13:05:20,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:20" (1/1) ... [2023-08-24 13:05:20,425 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:20" (1/1) ... [2023-08-24 13:05:20,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:20" (1/1) ... [2023-08-24 13:05:20,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 13:05:20,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 13:05:20,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 13:05:20,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 13:05:20,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:20" (1/1) ... [2023-08-24 13:05:20,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:05:20,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:05:20,478 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 13:05:20,500 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 13:05:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 13:05:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-24 13:05:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-24 13:05:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-24 13:05:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 13:05:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 13:05:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-24 13:05:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-24 13:05:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 13:05:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 13:05:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 13:05:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 13:05:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-24 13:05:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 13:05:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 13:05:20,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 13:05:20,522 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 13:05:20,708 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 13:05:20,710 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 13:05:21,001 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 13:05:21,009 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 13:05:21,009 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-24 13:05:21,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:05:21 BoogieIcfgContainer [2023-08-24 13:05:21,012 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 13:05:21,014 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 13:05:21,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 13:05:21,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 13:05:21,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:05:19" (1/3) ... [2023-08-24 13:05:21,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3811afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:05:21, skipping insertion in model container [2023-08-24 13:05:21,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:05:20" (2/3) ... [2023-08-24 13:05:21,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3811afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:05:21, skipping insertion in model container [2023-08-24 13:05:21,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:05:21" (3/3) ... [2023-08-24 13:05:21,019 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-08-24 13:05:21,031 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 13:05:21,031 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 13:05:21,032 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 13:05:21,139 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 13:05:21,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 234 transitions, 490 flow [2023-08-24 13:05:21,362 INFO L124 PetriNetUnfolderBase]: 54/442 cut-off events. [2023-08-24 13:05:21,362 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-24 13:05:21,377 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 13:05:21,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 234 transitions, 490 flow [2023-08-24 13:05:21,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 231 transitions, 476 flow [2023-08-24 13:05:21,391 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 13:05:21,401 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 231 transitions, 476 flow [2023-08-24 13:05:21,409 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 231 transitions, 476 flow [2023-08-24 13:05:21,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 231 transitions, 476 flow [2023-08-24 13:05:21,493 INFO L124 PetriNetUnfolderBase]: 50/429 cut-off events. [2023-08-24 13:05:21,493 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 13:05:21,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 429 events. 50/429 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1724 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2023-08-24 13:05:21,509 INFO L119 LiptonReduction]: Number of co-enabled transitions 16074 [2023-08-24 13:05:27,174 INFO L134 LiptonReduction]: Checked pairs total: 23489 [2023-08-24 13:05:27,174 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-08-24 13:05:27,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 13:05:27,192 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;@190f0697, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 13:05:27,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 13:05:27,200 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 13:05:27,200 INFO L124 PetriNetUnfolderBase]: 8/77 cut-off events. [2023-08-24 13:05:27,200 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 13:05:27,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:05:27,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:05:27,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:05:27,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:05:27,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1709863412, now seen corresponding path program 1 times [2023-08-24 13:05:27,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:05:27,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824939346] [2023-08-24 13:05:27,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:05:27,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:05:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:05:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:05:27,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:05:27,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824939346] [2023-08-24 13:05:27,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824939346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:05:27,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:05:27,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 13:05:27,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219533169] [2023-08-24 13:05:27,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:05:27,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:05:27,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:05:27,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:05:27,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:05:27,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 420 [2023-08-24 13:05:27,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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 13:05:27,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:05:27,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 420 [2023-08-24 13:05:27,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:05:28,112 INFO L124 PetriNetUnfolderBase]: 3149/5413 cut-off events. [2023-08-24 13:05:28,113 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2023-08-24 13:05:28,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10401 conditions, 5413 events. 3149/5413 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 31367 event pairs, 2924 based on Foata normal form. 267/4774 useless extension candidates. Maximal degree in co-relation 9391. Up to 4918 conditions per place. [2023-08-24 13:05:28,132 INFO L140 encePairwiseOnDemand]: 406/420 looper letters, 36 selfloop transitions, 2 changer transitions 14/55 dead transitions. [2023-08-24 13:05:28,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 220 flow [2023-08-24 13:05:28,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:05:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:05:28,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2023-08-24 13:05:28,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261904761904762 [2023-08-24 13:05:28,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2023-08-24 13:05:28,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2023-08-24 13:05:28,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:05:28,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2023-08-24 13:05:28,160 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 13:05:28,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 13:05:28,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 13:05:28,167 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 144 flow. Second operand 3 states and 663 transitions. [2023-08-24 13:05:28,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 220 flow [2023-08-24 13:05:28,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 13:05:28,175 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 103 flow [2023-08-24 13:05:28,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=53, 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=103, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2023-08-24 13:05:28,179 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2023-08-24 13:05:28,179 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 103 flow [2023-08-24 13:05:28,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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 13:05:28,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:05:28,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:05:28,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 13:05:28,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:05:28,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:05:28,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1462278908, now seen corresponding path program 1 times [2023-08-24 13:05:28,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:05:28,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155064741] [2023-08-24 13:05:28,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:05:28,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:05:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:05:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:05:28,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:05:28,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155064741] [2023-08-24 13:05:28,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155064741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:05:28,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977234177] [2023-08-24 13:05:28,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:05:28,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:05:28,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:05:28,329 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 13:05:28,336 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 13:05:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:05:28,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-24 13:05:28,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:05:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:05:28,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 13:05:28,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977234177] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:05:28,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 13:05:28,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-24 13:05:28,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119776695] [2023-08-24 13:05:28,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:05:28,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:05:28,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:05:28,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:05:28,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:05:28,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 420 [2023-08-24 13:05:28,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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 13:05:28,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:05:28,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 420 [2023-08-24 13:05:28,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:05:28,855 INFO L124 PetriNetUnfolderBase]: 1468/2471 cut-off events. [2023-08-24 13:05:28,856 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-24 13:05:28,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4910 conditions, 2471 events. 1468/2471 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 12498 event pairs, 640 based on Foata normal form. 0/2082 useless extension candidates. Maximal degree in co-relation 4897. Up to 2370 conditions per place. [2023-08-24 13:05:28,867 INFO L140 encePairwiseOnDemand]: 417/420 looper letters, 44 selfloop transitions, 2 changer transitions 1/50 dead transitions. [2023-08-24 13:05:28,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 215 flow [2023-08-24 13:05:28,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:05:28,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:05:28,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2023-08-24 13:05:28,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182539682539683 [2023-08-24 13:05:28,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2023-08-24 13:05:28,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2023-08-24 13:05:28,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:05:28,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2023-08-24 13:05:28,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 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 13:05:28,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 13:05:28,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 13:05:28,883 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 103 flow. Second operand 3 states and 653 transitions. [2023-08-24 13:05:28,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 215 flow [2023-08-24 13:05:28,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 211 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 13:05:28,886 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 107 flow [2023-08-24 13:05:28,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-08-24 13:05:28,887 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2023-08-24 13:05:28,887 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 107 flow [2023-08-24 13:05:28,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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 13:05:28,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:05:28,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:05:28,900 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 13:05:29,094 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 13:05:29,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:05:29,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:05:29,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1599280673, now seen corresponding path program 1 times [2023-08-24 13:05:29,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:05:29,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555056823] [2023-08-24 13:05:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:05:29,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:05:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:05:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:05:29,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:05:29,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555056823] [2023-08-24 13:05:29,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555056823] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:05:29,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637230894] [2023-08-24 13:05:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:05:29,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:05:29,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:05:29,235 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 13:05:29,238 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 13:05:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:05:29,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-24 13:05:29,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:05:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:05:29,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:05:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:05:29,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637230894] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:05:29,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:05:29,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-24 13:05:29,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42572194] [2023-08-24 13:05:29,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:05:29,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 13:05:29,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:05:29,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 13:05:29,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 13:05:29,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 420 [2023-08-24 13:05:29,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 107 flow. Second operand has 7 states, 7 states have (on average 204.14285714285714) internal successors, (1429), 7 states have internal predecessors, (1429), 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 13:05:29,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:05:29,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 420 [2023-08-24 13:05:29,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:05:29,768 INFO L124 PetriNetUnfolderBase]: 1468/2508 cut-off events. [2023-08-24 13:05:29,769 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-24 13:05:29,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4977 conditions, 2508 events. 1468/2508 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 12606 event pairs, 1368 based on Foata normal form. 3/2123 useless extension candidates. Maximal degree in co-relation 4949. Up to 2380 conditions per place. [2023-08-24 13:05:29,780 INFO L140 encePairwiseOnDemand]: 417/420 looper letters, 36 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2023-08-24 13:05:29,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 201 flow [2023-08-24 13:05:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:05:29,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:05:29,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1250 transitions. [2023-08-24 13:05:29,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2023-08-24 13:05:29,784 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1250 transitions. [2023-08-24 13:05:29,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1250 transitions. [2023-08-24 13:05:29,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:05:29,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1250 transitions. [2023-08-24 13:05:29,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.33333333333334) internal successors, (1250), 6 states have internal predecessors, (1250), 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 13:05:29,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 13:05:29,794 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 13:05:29,794 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 107 flow. Second operand 6 states and 1250 transitions. [2023-08-24 13:05:29,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 201 flow [2023-08-24 13:05:29,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 13:05:29,796 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 139 flow [2023-08-24 13:05:29,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-24 13:05:29,798 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-08-24 13:05:29,798 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 139 flow [2023-08-24 13:05:29,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.14285714285714) internal successors, (1429), 7 states have internal predecessors, (1429), 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 13:05:29,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:05:29,799 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:05:29,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 13:05:30,004 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 13:05:30,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:05:30,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:05:30,005 INFO L85 PathProgramCache]: Analyzing trace with hash -248668621, now seen corresponding path program 2 times [2023-08-24 13:05:30,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:05:30,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087757979] [2023-08-24 13:05:30,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:05:30,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:05:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:05:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 13:05:30,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:05:30,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087757979] [2023-08-24 13:05:30,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087757979] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:05:30,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564826376] [2023-08-24 13:05:30,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 13:05:30,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:05:30,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:05:30,127 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 13:05:30,130 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 13:05:30,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 13:05:30,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:05:30,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 13:05:30,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:05:30,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:05:30,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:05:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:05:30,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564826376] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:05:30,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:05:30,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-08-24 13:05:30,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598343617] [2023-08-24 13:05:30,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:05:30,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 13:05:30,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:05:30,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 13:05:30,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-08-24 13:05:30,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 420 [2023-08-24 13:05:30,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 139 flow. Second operand has 14 states, 14 states have (on average 196.35714285714286) internal successors, (2749), 14 states have internal predecessors, (2749), 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 13:05:30,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:05:30,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 420 [2023-08-24 13:05:30,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:05:30,529 INFO L124 PetriNetUnfolderBase]: 17/58 cut-off events. [2023-08-24 13:05:30,529 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-24 13:05:30,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 58 events. 17/58 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 1 based on Foata normal form. 15/73 useless extension candidates. Maximal degree in co-relation 155. Up to 34 conditions per place. [2023-08-24 13:05:30,530 INFO L140 encePairwiseOnDemand]: 415/420 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-24 13:05:30,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 198 flow [2023-08-24 13:05:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 13:05:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 13:05:30,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2756 transitions. [2023-08-24 13:05:30,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46870748299319726 [2023-08-24 13:05:30,540 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2756 transitions. [2023-08-24 13:05:30,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2756 transitions. [2023-08-24 13:05:30,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:05:30,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2756 transitions. [2023-08-24 13:05:30,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 196.85714285714286) internal successors, (2756), 14 states have internal predecessors, (2756), 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 13:05:30,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 420.0) internal successors, (6300), 15 states have internal predecessors, (6300), 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 13:05:30,560 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 420.0) internal successors, (6300), 15 states have internal predecessors, (6300), 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 13:05:30,560 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 139 flow. Second operand 14 states and 2756 transitions. [2023-08-24 13:05:30,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 198 flow [2023-08-24 13:05:30,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 182 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-24 13:05:30,563 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-24 13:05:30,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-24 13:05:30,565 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -15 predicate places. [2023-08-24 13:05:30,565 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-24 13:05:30,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 196.35714285714286) internal successors, (2749), 14 states have internal predecessors, (2749), 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 13:05:30,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-24 13:05:30,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-24 13:05:30,583 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 13:05:30,781 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 13:05:30,781 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-08-24 13:05:30,784 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-08-24 13:05:30,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 234 transitions, 490 flow [2023-08-24 13:05:30,826 INFO L124 PetriNetUnfolderBase]: 54/442 cut-off events. [2023-08-24 13:05:30,826 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-24 13:05:30,828 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 13:05:30,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 234 transitions, 490 flow [2023-08-24 13:05:30,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 232 transitions, 480 flow [2023-08-24 13:05:30,830 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 13:05:30,830 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 214 places, 232 transitions, 480 flow [2023-08-24 13:05:30,830 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 214 places, 232 transitions, 480 flow [2023-08-24 13:05:30,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 232 transitions, 480 flow [2023-08-24 13:05:30,861 INFO L124 PetriNetUnfolderBase]: 50/430 cut-off events. [2023-08-24 13:05:30,861 INFO L125 PetriNetUnfolderBase]: For 4/8 co-relation queries the response was YES. [2023-08-24 13:05:30,863 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 13:05:30,873 INFO L119 LiptonReduction]: Number of co-enabled transitions 16132 [2023-08-24 13:05:36,057 INFO L134 LiptonReduction]: Checked pairs total: 25494 [2023-08-24 13:05:36,057 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-08-24 13:05:36,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 13:05:36,064 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;@190f0697, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 13:05:36,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 13:05:36,071 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 13:05:36,071 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-08-24 13:05:36,071 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 13:05:36,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:05:36,072 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-24 13:05:36,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:05:36,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:05:36,072 INFO L85 PathProgramCache]: Analyzing trace with hash 281851474, now seen corresponding path program 1 times [2023-08-24 13:05:36,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:05:36,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632190185] [2023-08-24 13:05:36,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:05:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:05:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:05:36,107 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 13:05:36,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:05:36,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632190185] [2023-08-24 13:05:36,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632190185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:05:36,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:05:36,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 13:05:36,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633421966] [2023-08-24 13:05:36,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:05:36,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:05:36,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:05:36,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:05:36,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:05:36,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 422 [2023-08-24 13:05:36,113 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 13:05:36,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:05:36,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 422 [2023-08-24 13:05:36,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:05:36,577 INFO L124 PetriNetUnfolderBase]: 3149/5351 cut-off events. [2023-08-24 13:05:36,578 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-08-24 13:05:36,582 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 161. Compared 30525 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 13:05:36,590 INFO L140 encePairwiseOnDemand]: 408/422 looper letters, 37 selfloop transitions, 2 changer transitions 9/55 dead transitions. [2023-08-24 13:05:36,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 222 flow [2023-08-24 13:05:36,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:05:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:05:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2023-08-24 13:05:36,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523696682464455 [2023-08-24 13:05:36,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2023-08-24 13:05:36,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2023-08-24 13:05:36,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:05:36,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2023-08-24 13:05:36,594 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 13:05:36,596 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 13:05:36,596 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 13:05:36,596 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 146 flow. Second operand 3 states and 663 transitions. [2023-08-24 13:05:36,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 222 flow [2023-08-24 13:05:36,598 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 13:05:36,600 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 112 flow [2023-08-24 13:05:36,600 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=112, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-08-24 13:05:36,603 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-24 13:05:36,604 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 112 flow [2023-08-24 13:05:36,604 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 13:05:36,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:05:36,604 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-24 13:05:36,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 13:05:36,604 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:05:36,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:05:36,605 INFO L85 PathProgramCache]: Analyzing trace with hash -766548030, now seen corresponding path program 1 times [2023-08-24 13:05:36,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:05:36,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081524655] [2023-08-24 13:05:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:05:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:05:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:05:36,653 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 13:05:36,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:05:36,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081524655] [2023-08-24 13:05:36,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081524655] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:05:36,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956529991] [2023-08-24 13:05:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:05:36,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:05:36,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:05:36,657 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 13:05:36,684 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 13:05:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:05:36,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-24 13:05:36,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:05:36,800 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 13:05:36,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:05:36,818 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 13:05:36,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956529991] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:05:36,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:05:36,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-24 13:05:36,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710067133] [2023-08-24 13:05:36,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:05:36,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 13:05:36,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:05:36,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 13:05:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 13:05:36,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 422 [2023-08-24 13:05:36,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 112 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 13:05:36,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:05:36,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 422 [2023-08-24 13:05:36,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:05:37,070 INFO L124 PetriNetUnfolderBase]: 1269/2249 cut-off events. [2023-08-24 13:05:37,071 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 13:05:37,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4344 conditions, 2249 events. 1269/2249 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11169 event pairs, 1188 based on Foata normal form. 0/1910 useless extension candidates. Maximal degree in co-relation 4331. Up to 2050 conditions per place. [2023-08-24 13:05:37,080 INFO L140 encePairwiseOnDemand]: 419/422 looper letters, 37 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2023-08-24 13:05:37,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 208 flow [2023-08-24 13:05:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:05:37,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:05:37,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1251 transitions. [2023-08-24 13:05:37,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940758293838863 [2023-08-24 13:05:37,084 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1251 transitions. [2023-08-24 13:05:37,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1251 transitions. [2023-08-24 13:05:37,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:05:37,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1251 transitions. [2023-08-24 13:05:37,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.5) internal successors, (1251), 6 states have internal predecessors, (1251), 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 13:05:37,090 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 13:05:37,091 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 13:05:37,091 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 112 flow. Second operand 6 states and 1251 transitions. [2023-08-24 13:05:37,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 208 flow [2023-08-24 13:05:37,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 204 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 13:05:37,093 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 144 flow [2023-08-24 13:05:37,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-08-24 13:05:37,096 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-24 13:05:37,097 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 144 flow [2023-08-24 13:05:37,097 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 13:05:37,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:05:37,098 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-24 13:05:37,107 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 13:05:37,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:05:37,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:05:37,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:05:37,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1264217518, now seen corresponding path program 2 times [2023-08-24 13:05:37,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:05:37,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815315700] [2023-08-24 13:05:37,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:05:37,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:05:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:05:37,482 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 13:05:37,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:05:37,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815315700] [2023-08-24 13:05:37,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815315700] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:05:37,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265425151] [2023-08-24 13:05:37,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 13:05:37,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:05:37,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:05:37,484 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 13:05:37,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 13:05:37,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 13:05:37,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:05:37,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 13:05:37,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:05:37,662 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 13:05:37,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:05:37,707 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 13:05:37,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265425151] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:05:37,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:05:37,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-24 13:05:37,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694932028] [2023-08-24 13:05:37,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:05:37,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 13:05:37,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:05:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 13:05:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-24 13:05:37,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 422 [2023-08-24 13:05:37,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 144 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 13:05:37,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:05:37,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 422 [2023-08-24 13:05:37,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:05:38,001 INFO L124 PetriNetUnfolderBase]: 1269/2255 cut-off events. [2023-08-24 13:05:38,001 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-24 13:05:38,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4381 conditions, 2255 events. 1269/2255 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11161 event pairs, 1188 based on Foata normal form. 6/1923 useless extension candidates. Maximal degree in co-relation 4322. Up to 2050 conditions per place. [2023-08-24 13:05:38,016 INFO L140 encePairwiseOnDemand]: 419/422 looper letters, 37 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2023-08-24 13:05:38,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 55 transitions, 276 flow [2023-08-24 13:05:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 13:05:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 13:05:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2466 transitions. [2023-08-24 13:05:38,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48696682464454977 [2023-08-24 13:05:38,023 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2466 transitions. [2023-08-24 13:05:38,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2466 transitions. [2023-08-24 13:05:38,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:05:38,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2466 transitions. [2023-08-24 13:05:38,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 205.5) internal successors, (2466), 12 states have internal predecessors, (2466), 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 13:05:38,038 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 13:05:38,039 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 13:05:38,039 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 144 flow. Second operand 12 states and 2466 transitions. [2023-08-24 13:05:38,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 55 transitions, 276 flow [2023-08-24 13:05:38,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 262 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-24 13:05:38,042 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 214 flow [2023-08-24 13:05:38,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=214, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-08-24 13:05:38,044 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-08-24 13:05:38,044 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 214 flow [2023-08-24 13:05:38,045 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 13:05:38,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:05:38,045 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-24 13:05:38,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-24 13:05:38,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:05:38,252 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:05:38,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:05:38,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1896309678, now seen corresponding path program 3 times [2023-08-24 13:05:38,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:05:38,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438007527] [2023-08-24 13:05:38,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:05:38,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:05:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:05:38,655 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 13:05:38,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:05:38,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438007527] [2023-08-24 13:05:38,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438007527] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:05:38,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531975103] [2023-08-24 13:05:38,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 13:05:38,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:05:38,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:05:38,657 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 13:05:38,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 13:09:04,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-24 13:09:04,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:09:04,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 13:09:04,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:09:04,904 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 13:09:04,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:09:05,082 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 13:09:05,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531975103] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:09:05,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:09:05,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-24 13:09:05,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462396048] [2023-08-24 13:09:05,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:09:05,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 13:09:05,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:09:05,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 13:09:05,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-24 13:09:05,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 422 [2023-08-24 13:09:05,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 214 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 13:09:05,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:09:05,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 422 [2023-08-24 13:09:05,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:09:05,467 INFO L124 PetriNetUnfolderBase]: 1269/2267 cut-off events. [2023-08-24 13:09:05,467 INFO L125 PetriNetUnfolderBase]: For 470/470 co-relation queries the response was YES. [2023-08-24 13:09:05,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4465 conditions, 2267 events. 1269/2267 cut-off events. For 470/470 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11161 event pairs, 1188 based on Foata normal form. 12/1941 useless extension candidates. Maximal degree in co-relation 4328. Up to 2050 conditions per place. [2023-08-24 13:09:05,478 INFO L140 encePairwiseOnDemand]: 419/422 looper letters, 37 selfloop transitions, 23 changer transitions 0/67 dead transitions. [2023-08-24 13:09:05,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 67 transitions, 430 flow [2023-08-24 13:09:05,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 13:09:05,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 13:09:05,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4896 transitions. [2023-08-24 13:09:05,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834123222748815 [2023-08-24 13:09:05,490 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4896 transitions. [2023-08-24 13:09:05,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4896 transitions. [2023-08-24 13:09:05,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:09:05,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4896 transitions. [2023-08-24 13:09:05,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 204.0) internal successors, (4896), 24 states have internal predecessors, (4896), 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 13:09:05,521 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 13:09:05,523 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 13:09:05,523 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 214 flow. Second operand 24 states and 4896 transitions. [2023-08-24 13:09:05,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 67 transitions, 430 flow [2023-08-24 13:09:05,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 67 transitions, 358 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-24 13:09:05,527 INFO L231 Difference]: Finished difference. Result has 103 places, 67 transitions, 334 flow [2023-08-24 13:09:05,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=334, PETRI_PLACES=103, PETRI_TRANSITIONS=67} [2023-08-24 13:09:05,527 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2023-08-24 13:09:05,527 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 67 transitions, 334 flow [2023-08-24 13:09:05,528 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 13:09:05,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:09:05,529 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-08-24 13:09:05,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 13:09:05,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:09:05,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:09:05,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:09:05,744 INFO L85 PathProgramCache]: Analyzing trace with hash 829435986, now seen corresponding path program 4 times [2023-08-24 13:09:05,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:09:05,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332562060] [2023-08-24 13:09:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:09:05,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:09:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:09:06,803 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 13:09:06,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:09:06,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332562060] [2023-08-24 13:09:06,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332562060] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:09:06,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129446488] [2023-08-24 13:09:06,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 13:09:06,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:09:06,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:09:06,805 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 13:09:06,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 13:09:07,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 13:09:07,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:09:07,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-24 13:09:07,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:09:07,325 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 13:09:07,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:09:07,947 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 13:09:07,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129446488] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:09:07,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:09:07,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-24 13:09:07,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094199209] [2023-08-24 13:09:07,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:09:07,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-24 13:09:07,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:09:07,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-24 13:09:07,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-24 13:09:07,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 422 [2023-08-24 13:09:07,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 67 transitions, 334 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 13:09:07,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:09:07,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 422 [2023-08-24 13:09:07,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:09:08,529 INFO L124 PetriNetUnfolderBase]: 1269/2291 cut-off events. [2023-08-24 13:09:08,531 INFO L125 PetriNetUnfolderBase]: For 5240/5240 co-relation queries the response was YES. [2023-08-24 13:09:08,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4609 conditions, 2291 events. 1269/2291 cut-off events. For 5240/5240 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11165 event pairs, 1188 based on Foata normal form. 24/1977 useless extension candidates. Maximal degree in co-relation 4340. Up to 2050 conditions per place. [2023-08-24 13:09:08,542 INFO L140 encePairwiseOnDemand]: 419/422 looper letters, 37 selfloop transitions, 47 changer transitions 0/91 dead transitions. [2023-08-24 13:09:08,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 91 transitions, 694 flow [2023-08-24 13:09:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-24 13:09:08,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-24 13:09:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 9756 transitions. [2023-08-24 13:09:08,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816350710900474 [2023-08-24 13:09:08,564 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 9756 transitions. [2023-08-24 13:09:08,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 9756 transitions. [2023-08-24 13:09:08,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:09:08,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 9756 transitions. [2023-08-24 13:09:08,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 203.25) internal successors, (9756), 48 states have internal predecessors, (9756), 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 13:09:08,611 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 13:09:08,616 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 13:09:08,616 INFO L175 Difference]: Start difference. First operand has 103 places, 67 transitions, 334 flow. Second operand 48 states and 9756 transitions. [2023-08-24 13:09:08,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 91 transitions, 694 flow [2023-08-24 13:09:08,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 91 transitions, 550 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-08-24 13:09:08,624 INFO L231 Difference]: Finished difference. Result has 163 places, 91 transitions, 574 flow [2023-08-24 13:09:08,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=574, PETRI_PLACES=163, PETRI_TRANSITIONS=91} [2023-08-24 13:09:08,625 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2023-08-24 13:09:08,625 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 91 transitions, 574 flow [2023-08-24 13:09:08,627 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 13:09:08,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:09:08,628 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-08-24 13:09:08,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-24 13:09:08,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:09:08,837 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:09:08,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:09:08,837 INFO L85 PathProgramCache]: Analyzing trace with hash -215656366, now seen corresponding path program 5 times [2023-08-24 13:09:08,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:09:08,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797529712] [2023-08-24 13:09:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:09:08,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:09:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:09:12,174 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 13:09:12,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:09:12,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797529712] [2023-08-24 13:09:12,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797529712] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:09:12,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992445429] [2023-08-24 13:09:12,175 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 13:09:12,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:09:12,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:09:12,177 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 13:09:12,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Received shutdown request... [2023-08-24 13:19:51,925 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 13:19:51,925 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 13:19:52,938 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 13:19:53,133 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process [2023-08-24 13:19:53,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 137 [2023-08-24 13:19:53,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 13:19:53,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-24 13:19:53,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2023-08-24 13:19:53,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335896445] [2023-08-24 13:19:53,158 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-24 13:19:53,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-24 13:19:53,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:19:53,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-24 13:19:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-24 13:19:53,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 422 [2023-08-24 13:19:53,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 91 transitions, 574 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 13:19:53,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:19:53,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 422 [2023-08-24 13:19:53,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:19:53,170 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 13:19:53,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 13:19:53,170 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-24 13:19:53,170 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 13:19:53,170 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-08-24 13:19:53,171 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT (2/2) [2023-08-24 13:19:53,172 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 13:19:53,172 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 13:19:53,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:19:53 BasicIcfg [2023-08-24 13:19:53,175 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 13:19:53,175 INFO L158 Benchmark]: Toolchain (without parser) took 873517.60ms. Allocated memory was 348.1MB in the beginning and 503.3MB in the end (delta: 155.2MB). Free memory was 321.2MB in the beginning and 256.3MB in the end (delta: 64.9MB). Peak memory consumption was 222.2MB. Max. memory is 16.0GB. [2023-08-24 13:19:53,175 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 348.1MB. Free memory was 325.3MB in the beginning and 325.1MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 13:19:53,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 677.10ms. Allocated memory is still 348.1MB. Free memory was 321.2MB in the beginning and 284.8MB in the end (delta: 36.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-24 13:19:53,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.99ms. Allocated memory is still 348.1MB. Free memory was 284.8MB in the beginning and 281.4MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 13:19:53,176 INFO L158 Benchmark]: Boogie Preprocessor took 42.36ms. Allocated memory is still 348.1MB. Free memory was 281.4MB in the beginning and 279.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 13:19:53,176 INFO L158 Benchmark]: RCFGBuilder took 574.17ms. Allocated memory is still 348.1MB. Free memory was 279.3MB in the beginning and 254.6MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-24 13:19:53,177 INFO L158 Benchmark]: TraceAbstraction took 872161.14ms. Allocated memory was 348.1MB in the beginning and 503.3MB in the end (delta: 155.2MB). Free memory was 254.1MB in the beginning and 256.3MB in the end (delta: -2.2MB). Peak memory consumption was 155.1MB. Max. memory is 16.0GB. [2023-08-24 13:19:53,178 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 348.1MB. Free memory was 325.3MB in the beginning and 325.1MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 677.10ms. Allocated memory is still 348.1MB. Free memory was 321.2MB in the beginning and 284.8MB in the end (delta: 36.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.99ms. Allocated memory is still 348.1MB. Free memory was 284.8MB in the beginning and 281.4MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 42.36ms. Allocated memory is still 348.1MB. Free memory was 281.4MB in the beginning and 279.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 574.17ms. Allocated memory is still 348.1MB. Free memory was 279.3MB in the beginning and 254.6MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 872161.14ms. Allocated memory was 348.1MB in the beginning and 503.3MB in the end (delta: 155.2MB). Free memory was 254.1MB in the beginning and 256.3MB in the end (delta: -2.2MB). Peak memory consumption was 155.1MB. 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: 5.8s, 213 PlacesBefore, 54 PlacesAfterwards, 231 TransitionsBefore, 65 TransitionsAfterwards, 16074 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 114 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 18 ConcurrentYvCompositions, 7 ChoiceCompositions, 186 TotalNumberOfCompositions, 23489 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14015, independent: 13699, independent conditional: 0, independent unconditional: 13699, dependent: 316, dependent conditional: 0, dependent unconditional: 316, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8332, independent: 8247, independent conditional: 0, independent unconditional: 8247, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14015, independent: 5452, independent conditional: 0, independent unconditional: 5452, dependent: 231, dependent conditional: 0, dependent unconditional: 231, unknown: 8332, unknown conditional: 0, unknown unconditional: 8332] , Statistics on independence cache: Total cache size (in pairs): 408, Positive cache size: 374, Positive conditional cache size: 0, Positive unconditional cache size: 374, 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 214 PlacesBefore, 54 PlacesAfterwards, 232 TransitionsBefore, 65 TransitionsAfterwards, 16132 CoEnabledTransitionPairs, 7 FixpointIterations, 45 TrivialSequentialCompositions, 114 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 20 ConcurrentYvCompositions, 7 ChoiceCompositions, 188 TotalNumberOfCompositions, 25494 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13904, independent: 13526, independent conditional: 0, independent unconditional: 13526, dependent: 378, dependent conditional: 0, dependent unconditional: 378, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8291, independent: 8204, independent conditional: 0, independent unconditional: 8204, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13904, independent: 5322, independent conditional: 0, independent unconditional: 5322, dependent: 291, dependent conditional: 0, dependent unconditional: 291, unknown: 8291, unknown conditional: 0, unknown unconditional: 8291] , Statistics on independence cache: Total cache size (in pairs): 390, Positive cache size: 348, Positive conditional cache size: 0, Positive unconditional cache size: 348, Negative cache size: 42, Negative conditional cache size: 0, Negative unconditional cache size: 42, 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: 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: 9.6s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 409 IncrementalHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 409 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=0, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 199 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1058 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 16/41 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency 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: 862.4s, OverallIterations: 6, TraceHistogramMax: 46, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 979 IncrementalHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 979 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=574occurred 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, 206.4s SatisfiabilityAnalysisTime, 5.6s 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