/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:50:02,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:50:02,444 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 [2023-08-23 23:50:02,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:50:02,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:50:02,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:50:02,480 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:50:02,480 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:50:02,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:50:02,484 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:50:02,484 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:50:02,485 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:50:02,485 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:50:02,486 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:50:02,486 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:50:02,486 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:50:02,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:50:02,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:50:02,487 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:50:02,487 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:50:02,487 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:50:02,488 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:50:02,488 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:50:02,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:50:02,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:50:02,489 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:50:02,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:50:02,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:50:02,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:50:02,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:50:02,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:50:02,491 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:50:02,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:50:02,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:50:02,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:50:02,492 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:50:02,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:50:02,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:50:02,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:50:02,803 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:50:02,804 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:50:02,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_true.i [2023-08-23 23:50:03,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:50:04,236 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:50:04,237 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_true.i [2023-08-23 23:50:04,262 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd69797a0/d9d60c3e7c4f49ea879c6259c8e03ae4/FLAG397a2d2b1 [2023-08-23 23:50:04,276 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd69797a0/d9d60c3e7c4f49ea879c6259c8e03ae4 [2023-08-23 23:50:04,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:50:04,282 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:50:04,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:50:04,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:50:04,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:50:04,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:50:04" (1/1) ... [2023-08-23 23:50:04,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@95310bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04, skipping insertion in model container [2023-08-23 23:50:04,289 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:50:04" (1/1) ... [2023-08-23 23:50:04,327 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:50:04,484 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/13-privatized_18-first-reads_true.i[1088,1101] [2023-08-23 23:50:04,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:50:04,652 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:50:04,663 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/13-privatized_18-first-reads_true.i[1088,1101] [2023-08-23 23:50:04,682 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-23 23:50:04,684 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-23 23:50:04,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:50:04,739 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:50:04,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04 WrapperNode [2023-08-23 23:50:04,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:50:04,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:50:04,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:50:04,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:50:04,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04" (1/1) ... [2023-08-23 23:50:04,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04" (1/1) ... [2023-08-23 23:50:04,797 INFO L138 Inliner]: procedures = 163, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 48 [2023-08-23 23:50:04,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:50:04,798 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:50:04,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:50:04,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:50:04,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04" (1/1) ... [2023-08-23 23:50:04,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04" (1/1) ... [2023-08-23 23:50:04,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04" (1/1) ... [2023-08-23 23:50:04,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04" (1/1) ... [2023-08-23 23:50:04,824 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04" (1/1) ... [2023-08-23 23:50:04,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04" (1/1) ... [2023-08-23 23:50:04,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04" (1/1) ... [2023-08-23 23:50:04,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04" (1/1) ... [2023-08-23 23:50:04,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:50:04,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:50:04,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:50:04,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:50:04,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04" (1/1) ... [2023-08-23 23:50:04,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:50:04,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:50:04,866 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) [2023-08-23 23:50:04,891 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 [2023-08-23 23:50:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-23 23:50:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:50:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-23 23:50:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:50:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:50:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-23 23:50:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-23 23:50:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:50:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:50:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:50:04,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:50:04,908 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 23:50:05,041 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:50:05,042 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:50:05,216 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:50:05,221 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:50:05,222 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:50:05,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:50:05 BoogieIcfgContainer [2023-08-23 23:50:05,226 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:50:05,228 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:50:05,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:50:05,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:50:05,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:50:04" (1/3) ... [2023-08-23 23:50:05,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7918c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:50:05, skipping insertion in model container [2023-08-23 23:50:05,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:50:04" (2/3) ... [2023-08-23 23:50:05,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7918c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:50:05, skipping insertion in model container [2023-08-23 23:50:05,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:50:05" (3/3) ... [2023-08-23 23:50:05,239 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_true.i [2023-08-23 23:50:05,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:50:05,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-23 23:50:05,253 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:50:05,320 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-23 23:50:05,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 142 flow [2023-08-23 23:50:05,396 INFO L124 PetriNetUnfolderBase]: 3/66 cut-off events. [2023-08-23 23:50:05,397 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-23 23:50:05,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 66 events. 3/66 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-08-23 23:50:05,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 142 flow [2023-08-23 23:50:05,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 59 transitions, 121 flow [2023-08-23 23:50:05,408 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:50:05,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 59 transitions, 121 flow [2023-08-23 23:50:05,425 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 59 transitions, 121 flow [2023-08-23 23:50:05,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 59 transitions, 121 flow [2023-08-23 23:50:05,437 INFO L124 PetriNetUnfolderBase]: 3/59 cut-off events. [2023-08-23 23:50:05,437 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:50:05,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 3/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-08-23 23:50:05,439 INFO L119 LiptonReduction]: Number of co-enabled transitions 420 [2023-08-23 23:50:07,571 INFO L134 LiptonReduction]: Checked pairs total: 855 [2023-08-23 23:50:07,571 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-23 23:50:07,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:50:07,587 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;@6363bee3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:50:07,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-23 23:50:07,589 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:50:07,589 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-23 23:50:07,589 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:50:07,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:50:07,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-23 23:50:07,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:50:07,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:50:07,594 INFO L85 PathProgramCache]: Analyzing trace with hash 256, now seen corresponding path program 1 times [2023-08-23 23:50:07,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:50:07,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555355938] [2023-08-23 23:50:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:50:07,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:50:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:50:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:50:07,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:50:07,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555355938] [2023-08-23 23:50:07,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555355938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:50:07,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:50:07,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-23 23:50:07,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466155517] [2023-08-23 23:50:07,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:50:07,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-23 23:50:07,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:50:07,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-23 23:50:07,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-23 23:50:07,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 128 [2023-08-23 23:50:07,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 13 transitions, 29 flow. Second operand has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 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) [2023-08-23 23:50:07,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:50:07,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 128 [2023-08-23 23:50:07,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:50:07,734 INFO L124 PetriNetUnfolderBase]: 22/53 cut-off events. [2023-08-23 23:50:07,734 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:50:07,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 53 events. 22/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 145 event pairs, 20 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 100. Up to 52 conditions per place. [2023-08-23 23:50:07,736 INFO L140 encePairwiseOnDemand]: 127/128 looper letters, 11 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-08-23 23:50:07,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 12 transitions, 49 flow [2023-08-23 23:50:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-23 23:50:07,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-23 23:50:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 134 transitions. [2023-08-23 23:50:07,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2023-08-23 23:50:07,746 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 134 transitions. [2023-08-23 23:50:07,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 134 transitions. [2023-08-23 23:50:07,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:50:07,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 134 transitions. [2023-08-23 23:50:07,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 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) [2023-08-23 23:50:07,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2023-08-23 23:50:07,755 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2023-08-23 23:50:07,756 INFO L175 Difference]: Start difference. First operand has 16 places, 13 transitions, 29 flow. Second operand 2 states and 134 transitions. [2023-08-23 23:50:07,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 12 transitions, 49 flow [2023-08-23 23:50:07,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 48 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:50:07,759 INFO L231 Difference]: Finished difference. Result has 15 places, 12 transitions, 26 flow [2023-08-23 23:50:07,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=26, PETRI_PLACES=15, PETRI_TRANSITIONS=12} [2023-08-23 23:50:07,763 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -1 predicate places. [2023-08-23 23:50:07,763 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 12 transitions, 26 flow [2023-08-23 23:50:07,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 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) [2023-08-23 23:50:07,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:50:07,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-23 23:50:07,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:50:07,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:50:07,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:50:07,764 INFO L85 PathProgramCache]: Analyzing trace with hash 7820586, now seen corresponding path program 1 times [2023-08-23 23:50:07,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:50:07,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837681372] [2023-08-23 23:50:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:50:07,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:50:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:50:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:50:07,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:50:07,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837681372] [2023-08-23 23:50:07,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837681372] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:50:07,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:50:07,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:50:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223267705] [2023-08-23 23:50:07,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:50:07,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:50:07,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:50:07,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:50:07,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:50:07,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 128 [2023-08-23 23:50:07,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2023-08-23 23:50:07,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:50:07,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 128 [2023-08-23 23:50:07,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:50:07,993 INFO L124 PetriNetUnfolderBase]: 19/47 cut-off events. [2023-08-23 23:50:07,993 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:50:07,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 47 events. 19/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 114 event pairs, 12 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 96. Up to 39 conditions per place. [2023-08-23 23:50:07,994 INFO L140 encePairwiseOnDemand]: 124/128 looper letters, 6 selfloop transitions, 3 changer transitions 6/15 dead transitions. [2023-08-23 23:50:07,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 15 transitions, 62 flow [2023-08-23 23:50:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:50:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:50:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2023-08-23 23:50:07,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713541666666667 [2023-08-23 23:50:07,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 181 transitions. [2023-08-23 23:50:07,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 181 transitions. [2023-08-23 23:50:07,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:50:07,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 181 transitions. [2023-08-23 23:50:07,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2023-08-23 23:50:07,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-08-23 23:50:08,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-08-23 23:50:08,000 INFO L175 Difference]: Start difference. First operand has 15 places, 12 transitions, 26 flow. Second operand 3 states and 181 transitions. [2023-08-23 23:50:08,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 15 transitions, 62 flow [2023-08-23 23:50:08,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-23 23:50:08,001 INFO L231 Difference]: Finished difference. Result has 18 places, 8 transitions, 29 flow [2023-08-23 23:50:08,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=29, PETRI_PLACES=18, PETRI_TRANSITIONS=8} [2023-08-23 23:50:08,001 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2023-08-23 23:50:08,002 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 8 transitions, 29 flow [2023-08-23 23:50:08,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2023-08-23 23:50:08,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:50:08,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-23 23:50:08,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:50:08,002 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:50:08,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:50:08,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1074083452, now seen corresponding path program 1 times [2023-08-23 23:50:08,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:50:08,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599071990] [2023-08-23 23:50:08,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:50:08,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:50:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:50:08,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:50:08,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:50:08,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599071990] [2023-08-23 23:50:08,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599071990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:50:08,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:50:08,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:50:08,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165462087] [2023-08-23 23:50:08,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:50:08,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:50:08,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:50:08,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:50:08,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:50:08,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 128 [2023-08-23 23:50:08,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 8 transitions, 29 flow. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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) [2023-08-23 23:50:08,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:50:08,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 128 [2023-08-23 23:50:08,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:50:08,183 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-23 23:50:08,183 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:50:08,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 4/12 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2023-08-23 23:50:08,183 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-08-23 23:50:08,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 7 transitions, 39 flow [2023-08-23 23:50:08,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:50:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:50:08,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 235 transitions. [2023-08-23 23:50:08,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2023-08-23 23:50:08,186 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 235 transitions. [2023-08-23 23:50:08,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 235 transitions. [2023-08-23 23:50:08,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:50:08,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 235 transitions. [2023-08-23 23:50:08,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 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) [2023-08-23 23:50:08,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 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) [2023-08-23 23:50:08,190 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 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) [2023-08-23 23:50:08,190 INFO L175 Difference]: Start difference. First operand has 18 places, 8 transitions, 29 flow. Second operand 5 states and 235 transitions. [2023-08-23 23:50:08,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 7 transitions, 39 flow [2023-08-23 23:50:08,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-23 23:50:08,191 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-23 23:50:08,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-23 23:50:08,192 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -1 predicate places. [2023-08-23 23:50:08,192 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-23 23:50:08,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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) [2023-08-23 23:50:08,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-23 23:50:08,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-23 23:50:08,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-23 23:50:08,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:50:08,195 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-23 23:50:08,198 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:50:08,198 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:50:08,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:50:08 BasicIcfg [2023-08-23 23:50:08,201 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:50:08,202 INFO L158 Benchmark]: Toolchain (without parser) took 3919.76ms. Allocated memory was 362.8MB in the beginning and 442.5MB in the end (delta: 79.7MB). Free memory was 338.1MB in the beginning and 399.4MB in the end (delta: -61.4MB). Peak memory consumption was 19.9MB. Max. memory is 16.0GB. [2023-08-23 23:50:08,202 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 362.8MB. Free memory is still 339.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:50:08,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 455.85ms. Allocated memory is still 362.8MB. Free memory was 337.5MB in the beginning and 318.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-23 23:50:08,203 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.87ms. Allocated memory is still 362.8MB. Free memory was 318.7MB in the beginning and 317.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:50:08,203 INFO L158 Benchmark]: Boogie Preprocessor took 31.43ms. Allocated memory is still 362.8MB. Free memory was 317.1MB in the beginning and 315.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:50:08,204 INFO L158 Benchmark]: RCFGBuilder took 395.86ms. Allocated memory is still 362.8MB. Free memory was 315.5MB in the beginning and 303.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-23 23:50:08,204 INFO L158 Benchmark]: TraceAbstraction took 2972.57ms. Allocated memory was 362.8MB in the beginning and 442.5MB in the end (delta: 79.7MB). Free memory was 302.4MB in the beginning and 399.4MB in the end (delta: -97.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:50:08,206 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 362.8MB. Free memory is still 339.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 455.85ms. Allocated memory is still 362.8MB. Free memory was 337.5MB in the beginning and 318.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.87ms. Allocated memory is still 362.8MB. Free memory was 318.7MB in the beginning and 317.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.43ms. Allocated memory is still 362.8MB. Free memory was 317.1MB in the beginning and 315.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 395.86ms. Allocated memory is still 362.8MB. Free memory was 315.5MB in the beginning and 303.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2972.57ms. Allocated memory was 362.8MB in the beginning and 442.5MB in the end (delta: 79.7MB). Free memory was 302.4MB in the beginning and 399.4MB in the end (delta: -97.0MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 60 PlacesBefore, 16 PlacesAfterwards, 59 TransitionsBefore, 13 TransitionsAfterwards, 420 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 61 TotalNumberOfCompositions, 855 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 505, independent: 413, independent conditional: 0, independent unconditional: 413, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 244, independent: 223, independent conditional: 0, independent unconditional: 223, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 505, independent: 190, independent conditional: 0, independent unconditional: 190, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 244, unknown conditional: 0, unknown unconditional: 244] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 81 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 2 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-23 23:50:08,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...