/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:17:15,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:17:15,172 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 [2023-08-27 11:17:15,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:17:15,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:17:15,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:17:15,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:17:15,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:17:15,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:17:15,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:17:15,207 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:17:15,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:17:15,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:17:15,208 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:17:15,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:17:15,209 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:17:15,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:17:15,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:17:15,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:17:15,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:17:15,209 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:17:15,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:17:15,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:17:15,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:17:15,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:17:15,211 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:17:15,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:17:15,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:17:15,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:17:15,212 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:17:15,213 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:17:15,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:17:15,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:17:15,213 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:17:15,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:17:15,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:17:15,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:17:15,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:17:15,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:17:15,488 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:17:15,488 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:17:15,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2023-08-27 11:17:16,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:17:16,801 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:17:16,801 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2023-08-27 11:17:16,813 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa12b089/45145b436f1a4234a7118583e2193217/FLAG8f6e6d337 [2023-08-27 11:17:16,823 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa12b089/45145b436f1a4234a7118583e2193217 [2023-08-27 11:17:16,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:17:16,826 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:17:16,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:17:16,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:17:16,829 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:17:16,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:17:16" (1/1) ... [2023-08-27 11:17:16,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f9c0582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:16, skipping insertion in model container [2023-08-27 11:17:16,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:17:16" (1/1) ... [2023-08-27 11:17:16,869 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:17:17,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:17:17,125 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:17:17,140 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-27 11:17:17,141 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-27 11:17:17,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:17:17,173 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:17:17,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:17 WrapperNode [2023-08-27 11:17:17,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:17:17,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:17:17,174 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:17:17,174 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:17:17,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:17" (1/1) ... [2023-08-27 11:17:17,187 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:17" (1/1) ... [2023-08-27 11:17:17,203 INFO L138 Inliner]: procedures = 162, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2023-08-27 11:17:17,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:17:17,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:17:17,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:17:17,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:17:17,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:17" (1/1) ... [2023-08-27 11:17:17,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:17" (1/1) ... [2023-08-27 11:17:17,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:17" (1/1) ... [2023-08-27 11:17:17,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:17" (1/1) ... [2023-08-27 11:17:17,228 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:17" (1/1) ... [2023-08-27 11:17:17,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:17" (1/1) ... [2023-08-27 11:17:17,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:17" (1/1) ... [2023-08-27 11:17:17,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:17" (1/1) ... [2023-08-27 11:17:17,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:17:17,232 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:17:17,232 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:17:17,232 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:17:17,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:17" (1/1) ... [2023-08-27 11:17:17,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:17:17,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:17:17,266 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) [2023-08-27 11:17:17,281 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 [2023-08-27 11:17:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:17:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:17:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:17:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:17:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:17:17,294 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:17:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:17:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:17:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:17:17,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:17:17,296 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 11:17:17,377 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:17:17,378 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:17:17,480 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:17:17,484 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:17:17,484 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 11:17:17,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:17:17 BoogieIcfgContainer [2023-08-27 11:17:17,485 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:17:17,487 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:17:17,487 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:17:17,489 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:17:17,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:17:16" (1/3) ... [2023-08-27 11:17:17,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3d850e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:17:17, skipping insertion in model container [2023-08-27 11:17:17,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:17:17" (2/3) ... [2023-08-27 11:17:17,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3d850e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:17:17, skipping insertion in model container [2023-08-27 11:17:17,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:17:17" (3/3) ... [2023-08-27 11:17:17,490 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_42-traces-ex-mini_true.i [2023-08-27 11:17:17,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:17:17,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 11:17:17,501 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:17:17,527 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 11:17:17,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 76 transitions, 157 flow [2023-08-27 11:17:17,572 INFO L124 PetriNetUnfolderBase]: 2/75 cut-off events. [2023-08-27 11:17:17,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:17:17,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 75 events. 2/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-08-27 11:17:17,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 76 transitions, 157 flow [2023-08-27 11:17:17,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 62 transitions, 127 flow [2023-08-27 11:17:17,579 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:17:17,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 62 transitions, 127 flow [2023-08-27 11:17:17,586 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 62 transitions, 127 flow [2023-08-27 11:17:17,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 62 transitions, 127 flow [2023-08-27 11:17:17,612 INFO L124 PetriNetUnfolderBase]: 0/62 cut-off events. [2023-08-27 11:17:17,612 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:17:17,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 0/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-27 11:17:17,613 INFO L119 LiptonReduction]: Number of co-enabled transitions 330 [2023-08-27 11:17:19,726 INFO L134 LiptonReduction]: Checked pairs total: 782 [2023-08-27 11:17:19,726 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-08-27 11:17:19,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:17:19,753 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;@3b68c590, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:17:19,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 11:17:19,759 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:17:19,759 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-27 11:17:19,759 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:17:19,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:17:19,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:17:19,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:17:19,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:17:19,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1152100839, now seen corresponding path program 1 times [2023-08-27 11:17:19,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:17:19,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020410784] [2023-08-27 11:17:19,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:17:19,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:17:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:17:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:17:20,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:17:20,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020410784] [2023-08-27 11:17:20,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020410784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:17:20,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:17:20,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:17:20,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907517204] [2023-08-27 11:17:20,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:17:20,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:17:20,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:17:20,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:17:20,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:17:20,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 126 [2023-08-27 11:17:20,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2023-08-27 11:17:20,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:17:20,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 126 [2023-08-27 11:17:20,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:17:20,096 INFO L124 PetriNetUnfolderBase]: 12/42 cut-off events. [2023-08-27 11:17:20,096 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:17:20,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 42 events. 12/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 9 based on Foata normal form. 4/45 useless extension candidates. Maximal degree in co-relation 74. Up to 28 conditions per place. [2023-08-27 11:17:20,097 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-27 11:17:20,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 59 flow [2023-08-27 11:17:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:17:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:17:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-08-27 11:17:20,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5767195767195767 [2023-08-27 11:17:20,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-08-27 11:17:20,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-08-27 11:17:20,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:17:20,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-08-27 11:17:20,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2023-08-27 11:17:20,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2023-08-27 11:17:20,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2023-08-27 11:17:20,117 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 27 flow. Second operand 3 states and 218 transitions. [2023-08-27 11:17:20,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 59 flow [2023-08-27 11:17:20,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:17:20,119 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 37 flow [2023-08-27 11:17:20,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, 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=37, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-27 11:17:20,122 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2023-08-27 11:17:20,123 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 37 flow [2023-08-27 11:17:20,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2023-08-27 11:17:20,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:17:20,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:17:20,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:17:20,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:17:20,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:17:20,124 INFO L85 PathProgramCache]: Analyzing trace with hash -746938268, now seen corresponding path program 1 times [2023-08-27 11:17:20,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:17:20,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176119081] [2023-08-27 11:17:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:17:20,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:17:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:17:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:17:20,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:17:20,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176119081] [2023-08-27 11:17:20,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176119081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:17:20,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:17:20,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:17:20,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406100652] [2023-08-27 11:17:20,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:17:20,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:17:20,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:17:20,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:17:20,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:17:20,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 126 [2023-08-27 11:17:20,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 37 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2023-08-27 11:17:20,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:17:20,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 126 [2023-08-27 11:17:20,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:17:20,276 INFO L124 PetriNetUnfolderBase]: 7/31 cut-off events. [2023-08-27 11:17:20,276 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 11:17:20,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 31 events. 7/31 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 2 based on Foata normal form. 5/36 useless extension candidates. Maximal degree in co-relation 63. Up to 19 conditions per place. [2023-08-27 11:17:20,277 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 8 selfloop transitions, 4 changer transitions 1/14 dead transitions. [2023-08-27 11:17:20,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 67 flow [2023-08-27 11:17:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:17:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:17:20,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2023-08-27 11:17:20,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42658730158730157 [2023-08-27 11:17:20,279 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 215 transitions. [2023-08-27 11:17:20,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 215 transitions. [2023-08-27 11:17:20,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:17:20,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 215 transitions. [2023-08-27 11:17:20,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2023-08-27 11:17:20,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 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) [2023-08-27 11:17:20,283 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 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) [2023-08-27 11:17:20,283 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 37 flow. Second operand 4 states and 215 transitions. [2023-08-27 11:17:20,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 67 flow [2023-08-27 11:17:20,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 14 transitions, 61 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:17:20,284 INFO L231 Difference]: Finished difference. Result has 19 places, 12 transitions, 39 flow [2023-08-27 11:17:20,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=39, PETRI_PLACES=19, PETRI_TRANSITIONS=12} [2023-08-27 11:17:20,284 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 3 predicate places. [2023-08-27 11:17:20,284 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 12 transitions, 39 flow [2023-08-27 11:17:20,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2023-08-27 11:17:20,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:17:20,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:17:20,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:17:20,285 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:17:20,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:17:20,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1682751061, now seen corresponding path program 1 times [2023-08-27 11:17:20,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:17:20,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513901367] [2023-08-27 11:17:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:17:20,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:17:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:17:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:17:20,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:17:20,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513901367] [2023-08-27 11:17:20,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513901367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:17:20,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:17:20,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:17:20,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289738547] [2023-08-27 11:17:20,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:17:20,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:17:20,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:17:20,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:17:20,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:17:20,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 126 [2023-08-27 11:17:20,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 39 flow. Second operand has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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) [2023-08-27 11:17:20,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:17:20,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 126 [2023-08-27 11:17:20,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:17:20,443 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2023-08-27 11:17:20,443 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:17:20,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 26 events. 6/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 2 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 55. Up to 12 conditions per place. [2023-08-27 11:17:20,445 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-08-27 11:17:20,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 65 flow [2023-08-27 11:17:20,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:17:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:17:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2023-08-27 11:17:20,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2023-08-27 11:17:20,450 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 213 transitions. [2023-08-27 11:17:20,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 213 transitions. [2023-08-27 11:17:20,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:17:20,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 213 transitions. [2023-08-27 11:17:20,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2023-08-27 11:17:20,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 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) [2023-08-27 11:17:20,455 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 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) [2023-08-27 11:17:20,455 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 39 flow. Second operand 4 states and 213 transitions. [2023-08-27 11:17:20,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 65 flow [2023-08-27 11:17:20,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 57 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:17:20,457 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-27 11:17:20,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-27 11:17:20,458 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2023-08-27 11:17:20,460 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-27 11:17:20,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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) [2023-08-27 11:17:20,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2023-08-27 11:17:20,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 11:17:20,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 11:17:20,463 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-27 11:17:20,465 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 11:17:20,466 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 11:17:20,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:17:20 BasicIcfg [2023-08-27 11:17:20,469 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 11:17:20,470 INFO L158 Benchmark]: Toolchain (without parser) took 3643.51ms. Allocated memory was 396.4MB in the beginning and 503.3MB in the end (delta: 107.0MB). Free memory was 371.3MB in the beginning and 375.3MB in the end (delta: -4.1MB). Peak memory consumption was 104.7MB. Max. memory is 16.0GB. [2023-08-27 11:17:20,472 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 396.4MB. Free memory was 372.7MB in the beginning and 372.5MB in the end (delta: 176.0kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:17:20,472 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.01ms. Allocated memory is still 396.4MB. Free memory was 371.3MB in the beginning and 352.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 11:17:20,474 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.37ms. Allocated memory is still 396.4MB. Free memory was 352.0MB in the beginning and 350.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:17:20,474 INFO L158 Benchmark]: Boogie Preprocessor took 27.10ms. Allocated memory is still 396.4MB. Free memory was 350.0MB in the beginning and 348.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:17:20,474 INFO L158 Benchmark]: RCFGBuilder took 253.29ms. Allocated memory is still 396.4MB. Free memory was 348.4MB in the beginning and 335.1MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 11:17:20,475 INFO L158 Benchmark]: TraceAbstraction took 2982.48ms. Allocated memory was 396.4MB in the beginning and 503.3MB in the end (delta: 107.0MB). Free memory was 334.5MB in the beginning and 375.3MB in the end (delta: -40.8MB). Peak memory consumption was 69.0MB. Max. memory is 16.0GB. [2023-08-27 11:17:20,479 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 396.4MB. Free memory was 372.7MB in the beginning and 372.5MB in the end (delta: 176.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 347.01ms. Allocated memory is still 396.4MB. Free memory was 371.3MB in the beginning and 352.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.37ms. Allocated memory is still 396.4MB. Free memory was 352.0MB in the beginning and 350.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.10ms. Allocated memory is still 396.4MB. Free memory was 350.0MB in the beginning and 348.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 253.29ms. Allocated memory is still 396.4MB. Free memory was 348.4MB in the beginning and 335.1MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2982.48ms. Allocated memory was 396.4MB in the beginning and 503.3MB in the end (delta: 107.0MB). Free memory was 334.5MB in the beginning and 375.3MB in the end (delta: -40.8MB). Peak memory consumption was 69.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 66 PlacesBefore, 16 PlacesAfterwards, 62 TransitionsBefore, 12 TransitionsAfterwards, 330 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 50 TotalNumberOfCompositions, 782 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 403, independent: 302, independent conditional: 0, independent unconditional: 302, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 173, independent: 153, independent conditional: 0, independent unconditional: 153, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 403, independent: 149, independent conditional: 0, independent unconditional: 149, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 173, unknown conditional: 0, unknown unconditional: 173] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 88 locations, 2 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, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 1 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=2, InterpolantAutomatonStates: 11, 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 11:17:20,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...