/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:23:02,426 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:23:02,506 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 22:23:02,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:23:02,511 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:23:02,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:23:02,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:23:02,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:23:02,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:23:02,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:23:02,548 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:23:02,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:23:02,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:23:02,549 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:23:02,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:23:02,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:23:02,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:23:02,550 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:23:02,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:23:02,550 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:23:02,550 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:23:02,551 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:23:02,551 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:23:02,551 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:23:02,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:23:02,552 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:23:02,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:23:02,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:23:02,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:23:02,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:23:02,553 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:23:02,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:23:02,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:23:02,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:23:02,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:23:02,554 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:23:02,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:23:02,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:23:02,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:23:02,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:23:02,822 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:23:02,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2023-08-26 22:23:03,972 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:23:04,264 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:23:04,265 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2023-08-26 22:23:04,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cda1f9ef/9d83b0b34c7f467996ab0cbd380659f7/FLAG373c73e89 [2023-08-26 22:23:04,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cda1f9ef/9d83b0b34c7f467996ab0cbd380659f7 [2023-08-26 22:23:04,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:23:04,309 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:23:04,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:23:04,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:23:04,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:23:04,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:23:04" (1/1) ... [2023-08-26 22:23:04,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789696af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04, skipping insertion in model container [2023-08-26 22:23:04,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:23:04" (1/1) ... [2023-08-26 22:23:04,366 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:23:04,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:23:04,681 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:23:04,709 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 22:23:04,711 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-26 22:23:04,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:23:04,758 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:23:04,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04 WrapperNode [2023-08-26 22:23:04,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:23:04,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:23:04,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:23:04,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:23:04,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04" (1/1) ... [2023-08-26 22:23:04,775 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04" (1/1) ... [2023-08-26 22:23:04,791 INFO L138 Inliner]: procedures = 163, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2023-08-26 22:23:04,791 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:23:04,792 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:23:04,792 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:23:04,792 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:23:04,799 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04" (1/1) ... [2023-08-26 22:23:04,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04" (1/1) ... [2023-08-26 22:23:04,802 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04" (1/1) ... [2023-08-26 22:23:04,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04" (1/1) ... [2023-08-26 22:23:04,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04" (1/1) ... [2023-08-26 22:23:04,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04" (1/1) ... [2023-08-26 22:23:04,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04" (1/1) ... [2023-08-26 22:23:04,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04" (1/1) ... [2023-08-26 22:23:04,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:23:04,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:23:04,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:23:04,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:23:04,817 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04" (1/1) ... [2023-08-26 22:23:04,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:23:04,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:23:04,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 22:23:04,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 22:23:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:23:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:23:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:23:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:23:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:23:04,878 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:23:04,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:23:04,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:23:04,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:23:04,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:23:04,879 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:23:04,979 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:23:04,981 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:23:05,198 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:23:05,204 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:23:05,204 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 22:23:05,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:23:05 BoogieIcfgContainer [2023-08-26 22:23:05,206 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:23:05,207 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:23:05,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:23:05,213 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:23:05,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:23:04" (1/3) ... [2023-08-26 22:23:05,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1442efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:23:05, skipping insertion in model container [2023-08-26 22:23:05,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:23:04" (2/3) ... [2023-08-26 22:23:05,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1442efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:23:05, skipping insertion in model container [2023-08-26 22:23:05,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:23:05" (3/3) ... [2023-08-26 22:23:05,216 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2023-08-26 22:23:05,231 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:23:05,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-26 22:23:05,232 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:23:05,301 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 22:23:05,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 89 transitions, 183 flow [2023-08-26 22:23:05,397 INFO L124 PetriNetUnfolderBase]: 3/88 cut-off events. [2023-08-26 22:23:05,397 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:23:05,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 88 events. 3/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-26 22:23:05,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 89 transitions, 183 flow [2023-08-26 22:23:05,407 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 78 transitions, 159 flow [2023-08-26 22:23:05,410 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:23:05,423 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 78 transitions, 159 flow [2023-08-26 22:23:05,426 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 78 transitions, 159 flow [2023-08-26 22:23:05,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 159 flow [2023-08-26 22:23:05,482 INFO L124 PetriNetUnfolderBase]: 1/78 cut-off events. [2023-08-26 22:23:05,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:23:05,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 78 events. 1/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2023-08-26 22:23:05,485 INFO L119 LiptonReduction]: Number of co-enabled transitions 850 [2023-08-26 22:23:08,635 INFO L134 LiptonReduction]: Checked pairs total: 2409 [2023-08-26 22:23:08,635 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-26 22:23:08,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:23:08,649 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;@27117439, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:23:08,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-26 22:23:08,652 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:23:08,653 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2023-08-26 22:23:08,653 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:23:08,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:23:08,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:23:08,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 22:23:08,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:23:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1503624025, now seen corresponding path program 1 times [2023-08-26 22:23:08,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:23:08,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841125301] [2023-08-26 22:23:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:23:08,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:23:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:23:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:23:08,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:23:08,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841125301] [2023-08-26 22:23:08,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841125301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:23:08,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:23:08,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:23:08,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451917457] [2023-08-26 22:23:08,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:23:08,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:23:08,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:23:09,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:23:09,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 22:23:09,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 150 [2023-08-26 22:23:09,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:23:09,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 150 [2023-08-26 22:23:09,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:23:09,114 INFO L124 PetriNetUnfolderBase]: 40/120 cut-off events. [2023-08-26 22:23:09,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:23:09,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 120 events. 40/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 393 event pairs, 22 based on Foata normal form. 8/119 useless extension candidates. Maximal degree in co-relation 210. Up to 57 conditions per place. [2023-08-26 22:23:09,117 INFO L140 encePairwiseOnDemand]: 145/150 looper letters, 17 selfloop transitions, 3 changer transitions 8/33 dead transitions. [2023-08-26 22:23:09,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 125 flow [2023-08-26 22:23:09,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:23:09,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:23:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 430 transitions. [2023-08-26 22:23:09,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2023-08-26 22:23:09,137 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 430 transitions. [2023-08-26 22:23:09,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 430 transitions. [2023-08-26 22:23:09,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:23:09,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 430 transitions. [2023-08-26 22:23:09,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,153 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,155 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 43 flow. Second operand 5 states and 430 transitions. [2023-08-26 22:23:09,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 125 flow [2023-08-26 22:23:09,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:23:09,159 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 57 flow [2023-08-26 22:23:09,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=57, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-26 22:23:09,164 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 6 predicate places. [2023-08-26 22:23:09,164 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 57 flow [2023-08-26 22:23:09,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:23:09,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:23:09,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:23:09,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 22:23:09,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:23:09,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2044048646, now seen corresponding path program 1 times [2023-08-26 22:23:09,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:23:09,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227341372] [2023-08-26 22:23:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:23:09,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:23:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:23:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:23:09,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:23:09,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227341372] [2023-08-26 22:23:09,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227341372] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:23:09,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:23:09,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:23:09,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980757635] [2023-08-26 22:23:09,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:23:09,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:23:09,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:23:09,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:23:09,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:23:09,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 150 [2023-08-26 22:23:09,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:23:09,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 150 [2023-08-26 22:23:09,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:23:09,343 INFO L124 PetriNetUnfolderBase]: 51/131 cut-off events. [2023-08-26 22:23:09,343 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-26 22:23:09,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 131 events. 51/131 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 418 event pairs, 22 based on Foata normal form. 2/125 useless extension candidates. Maximal degree in co-relation 276. Up to 90 conditions per place. [2023-08-26 22:23:09,344 INFO L140 encePairwiseOnDemand]: 142/150 looper letters, 20 selfloop transitions, 5 changer transitions 5/33 dead transitions. [2023-08-26 22:23:09,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 33 transitions, 147 flow [2023-08-26 22:23:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:23:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:23:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-08-26 22:23:09,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044444444444445 [2023-08-26 22:23:09,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-08-26 22:23:09,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-08-26 22:23:09,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:23:09,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-08-26 22:23:09,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,350 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 57 flow. Second operand 3 states and 227 transitions. [2023-08-26 22:23:09,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 33 transitions, 147 flow [2023-08-26 22:23:09,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 133 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-26 22:23:09,352 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 76 flow [2023-08-26 22:23:09,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-08-26 22:23:09,353 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-26 22:23:09,353 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 76 flow [2023-08-26 22:23:09,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:23:09,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:23:09,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:23:09,354 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 22:23:09,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:23:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash 157092576, now seen corresponding path program 2 times [2023-08-26 22:23:09,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:23:09,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404204820] [2023-08-26 22:23:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:23:09,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:23:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:23:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:23:09,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:23:09,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404204820] [2023-08-26 22:23:09,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404204820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:23:09,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:23:09,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 22:23:09,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860705152] [2023-08-26 22:23:09,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:23:09,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:23:09,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:23:09,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:23:09,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:23:09,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 150 [2023-08-26 22:23:09,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:23:09,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 150 [2023-08-26 22:23:09,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:23:09,576 INFO L124 PetriNetUnfolderBase]: 30/112 cut-off events. [2023-08-26 22:23:09,577 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-26 22:23:09,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 112 events. 30/112 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 383 event pairs, 13 based on Foata normal form. 9/121 useless extension candidates. Maximal degree in co-relation 277. Up to 57 conditions per place. [2023-08-26 22:23:09,578 INFO L140 encePairwiseOnDemand]: 141/150 looper letters, 13 selfloop transitions, 10 changer transitions 4/30 dead transitions. [2023-08-26 22:23:09,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 158 flow [2023-08-26 22:23:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:23:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:23:09,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2023-08-26 22:23:09,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2023-08-26 22:23:09,581 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 265 transitions. [2023-08-26 22:23:09,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 265 transitions. [2023-08-26 22:23:09,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:23:09,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 265 transitions. [2023-08-26 22:23:09,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,583 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,583 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 76 flow. Second operand 4 states and 265 transitions. [2023-08-26 22:23:09,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 158 flow [2023-08-26 22:23:09,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:23:09,587 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 102 flow [2023-08-26 22:23:09,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-08-26 22:23:09,588 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 6 predicate places. [2023-08-26 22:23:09,591 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 102 flow [2023-08-26 22:23:09,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:23:09,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:23:09,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:23:09,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 22:23:09,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:23:09,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1992926116, now seen corresponding path program 1 times [2023-08-26 22:23:09,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:23:09,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168412495] [2023-08-26 22:23:09,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:23:09,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:23:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:23:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:23:09,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:23:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168412495] [2023-08-26 22:23:09,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168412495] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:23:09,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:23:09,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:23:09,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449835505] [2023-08-26 22:23:09,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:23:09,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:23:09,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:23:09,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:23:09,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:23:09,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 150 [2023-08-26 22:23:09,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:23:09,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 150 [2023-08-26 22:23:09,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:23:09,711 INFO L124 PetriNetUnfolderBase]: 21/99 cut-off events. [2023-08-26 22:23:09,711 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-08-26 22:23:09,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 99 events. 21/99 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 353 event pairs, 6 based on Foata normal form. 5/103 useless extension candidates. Maximal degree in co-relation 296. Up to 65 conditions per place. [2023-08-26 22:23:09,715 INFO L140 encePairwiseOnDemand]: 142/150 looper letters, 14 selfloop transitions, 4 changer transitions 10/31 dead transitions. [2023-08-26 22:23:09,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 197 flow [2023-08-26 22:23:09,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:23:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:23:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-08-26 22:23:09,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-26 22:23:09,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-08-26 22:23:09,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-08-26 22:23:09,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:23:09,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-08-26 22:23:09,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,719 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 102 flow. Second operand 3 states and 225 transitions. [2023-08-26 22:23:09,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 197 flow [2023-08-26 22:23:09,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 177 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 22:23:09,722 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 96 flow [2023-08-26 22:23:09,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-26 22:23:09,723 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 6 predicate places. [2023-08-26 22:23:09,723 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 96 flow [2023-08-26 22:23:09,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:23:09,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:23:09,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:23:09,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 22:23:09,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:23:09,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1685348334, now seen corresponding path program 2 times [2023-08-26 22:23:09,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:23:09,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738301467] [2023-08-26 22:23:09,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:23:09,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:23:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:23:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:23:09,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:23:09,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738301467] [2023-08-26 22:23:09,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738301467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:23:09,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:23:09,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 22:23:09,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222073446] [2023-08-26 22:23:09,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:23:09,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:23:09,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:23:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:23:09,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:23:09,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 150 [2023-08-26 22:23:09,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:23:09,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 150 [2023-08-26 22:23:09,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:23:09,953 INFO L124 PetriNetUnfolderBase]: 7/63 cut-off events. [2023-08-26 22:23:09,954 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:23:09,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 63 events. 7/63 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 174 event pairs, 1 based on Foata normal form. 3/66 useless extension candidates. Maximal degree in co-relation 186. Up to 37 conditions per place. [2023-08-26 22:23:09,954 INFO L140 encePairwiseOnDemand]: 143/150 looper letters, 8 selfloop transitions, 5 changer transitions 11/26 dead transitions. [2023-08-26 22:23:09,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 172 flow [2023-08-26 22:23:09,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:23:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:23:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2023-08-26 22:23:09,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.395 [2023-08-26 22:23:09,956 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 237 transitions. [2023-08-26 22:23:09,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 237 transitions. [2023-08-26 22:23:09,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:23:09,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 237 transitions. [2023-08-26 22:23:09,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,958 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,958 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 96 flow. Second operand 4 states and 237 transitions. [2023-08-26 22:23:09,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 172 flow [2023-08-26 22:23:09,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 158 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 22:23:09,960 INFO L231 Difference]: Finished difference. Result has 30 places, 15 transitions, 67 flow [2023-08-26 22:23:09,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=67, PETRI_PLACES=30, PETRI_TRANSITIONS=15} [2023-08-26 22:23:09,961 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2023-08-26 22:23:09,961 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 15 transitions, 67 flow [2023-08-26 22:23:09,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:09,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:23:09,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:23:09,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:23:09,962 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 22:23:09,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:23:09,962 INFO L85 PathProgramCache]: Analyzing trace with hash 963612979, now seen corresponding path program 1 times [2023-08-26 22:23:09,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:23:09,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721544727] [2023-08-26 22:23:09,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:23:09,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:23:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:23:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:23:10,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:23:10,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721544727] [2023-08-26 22:23:10,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721544727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:23:10,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:23:10,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 22:23:10,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821713840] [2023-08-26 22:23:10,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:23:10,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:23:10,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:23:10,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:23:10,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:23:10,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 150 [2023-08-26 22:23:10,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 15 transitions, 67 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:10,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:23:10,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 150 [2023-08-26 22:23:10,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:23:10,143 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2023-08-26 22:23:10,143 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-26 22:23:10,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 26 events. 2/26 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 65. Up to 18 conditions per place. [2023-08-26 22:23:10,144 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 8 selfloop transitions, 2 changer transitions 6/18 dead transitions. [2023-08-26 22:23:10,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 113 flow [2023-08-26 22:23:10,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:23:10,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:23:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2023-08-26 22:23:10,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38166666666666665 [2023-08-26 22:23:10,146 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 229 transitions. [2023-08-26 22:23:10,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 229 transitions. [2023-08-26 22:23:10,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:23:10,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 229 transitions. [2023-08-26 22:23:10,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:10,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:10,148 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:10,148 INFO L175 Difference]: Start difference. First operand has 30 places, 15 transitions, 67 flow. Second operand 4 states and 229 transitions. [2023-08-26 22:23:10,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 113 flow [2023-08-26 22:23:10,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 18 transitions, 94 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 22:23:10,149 INFO L231 Difference]: Finished difference. Result has 24 places, 12 transitions, 46 flow [2023-08-26 22:23:10,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=24, PETRI_TRANSITIONS=12} [2023-08-26 22:23:10,150 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2023-08-26 22:23:10,150 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 12 transitions, 46 flow [2023-08-26 22:23:10,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:10,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:23:10,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:23:10,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:23:10,151 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 22:23:10,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:23:10,151 INFO L85 PathProgramCache]: Analyzing trace with hash 964416375, now seen corresponding path program 1 times [2023-08-26 22:23:10,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:23:10,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031873449] [2023-08-26 22:23:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:23:10,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:23:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:23:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:23:10,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:23:10,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031873449] [2023-08-26 22:23:10,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031873449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:23:10,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:23:10,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:23:10,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778494986] [2023-08-26 22:23:10,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:23:10,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:23:10,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:23:10,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:23:10,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 22:23:10,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 150 [2023-08-26 22:23:10,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 12 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:10,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:23:10,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 150 [2023-08-26 22:23:10,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:23:10,264 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2023-08-26 22:23:10,264 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-26 22:23:10,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 16 events. 2/16 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 37. Up to 10 conditions per place. [2023-08-26 22:23:10,264 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-26 22:23:10,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 11 transitions, 65 flow [2023-08-26 22:23:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:23:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:23:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2023-08-26 22:23:10,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116666666666667 [2023-08-26 22:23:10,266 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 247 transitions. [2023-08-26 22:23:10,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 247 transitions. [2023-08-26 22:23:10,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:23:10,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 247 transitions. [2023-08-26 22:23:10,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:10,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:10,268 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:10,268 INFO L175 Difference]: Start difference. First operand has 24 places, 12 transitions, 46 flow. Second operand 4 states and 247 transitions. [2023-08-26 22:23:10,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 11 transitions, 65 flow [2023-08-26 22:23:10,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 59 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 22:23:10,269 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2023-08-26 22:23:10,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2023-08-26 22:23:10,269 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2023-08-26 22:23:10,269 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2023-08-26 22:23:10,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:23:10,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2023-08-26 22:23:10,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-26 22:23:10,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:23:10,273 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2023-08-26 22:23:10,275 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 22:23:10,275 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 22:23:10,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 10:23:10 BasicIcfg [2023-08-26 22:23:10,278 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 22:23:10,278 INFO L158 Benchmark]: Toolchain (without parser) took 5969.26ms. Allocated memory was 408.9MB in the beginning and 526.4MB in the end (delta: 117.4MB). Free memory was 384.1MB in the beginning and 342.4MB in the end (delta: 41.7MB). Peak memory consumption was 160.5MB. Max. memory is 16.0GB. [2023-08-26 22:23:10,279 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 408.9MB. Free memory was 385.3MB in the beginning and 385.2MB in the end (delta: 79.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 22:23:10,279 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.47ms. Allocated memory is still 408.9MB. Free memory was 383.8MB in the beginning and 364.6MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 22:23:10,279 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.23ms. Allocated memory is still 408.9MB. Free memory was 364.6MB in the beginning and 362.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 22:23:10,280 INFO L158 Benchmark]: Boogie Preprocessor took 24.01ms. Allocated memory is still 408.9MB. Free memory was 362.5MB in the beginning and 361.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 22:23:10,280 INFO L158 Benchmark]: RCFGBuilder took 389.16ms. Allocated memory is still 408.9MB. Free memory was 361.0MB in the beginning and 347.1MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 22:23:10,280 INFO L158 Benchmark]: TraceAbstraction took 5070.35ms. Allocated memory was 408.9MB in the beginning and 526.4MB in the end (delta: 117.4MB). Free memory was 346.4MB in the beginning and 342.4MB in the end (delta: 4.0MB). Peak memory consumption was 122.8MB. Max. memory is 16.0GB. [2023-08-26 22:23:10,282 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 408.9MB. Free memory was 385.3MB in the beginning and 385.2MB in the end (delta: 79.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 446.47ms. Allocated memory is still 408.9MB. Free memory was 383.8MB in the beginning and 364.6MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.23ms. Allocated memory is still 408.9MB. Free memory was 364.6MB in the beginning and 362.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.01ms. Allocated memory is still 408.9MB. Free memory was 362.5MB in the beginning and 361.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 389.16ms. Allocated memory is still 408.9MB. Free memory was 361.0MB in the beginning and 347.1MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 5070.35ms. Allocated memory was 408.9MB in the beginning and 526.4MB in the end (delta: 117.4MB). Free memory was 346.4MB in the beginning and 342.4MB in the end (delta: 4.0MB). Peak memory consumption was 122.8MB. 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: 3.2s, 81 PlacesBefore, 23 PlacesAfterwards, 78 TransitionsBefore, 20 TransitionsAfterwards, 850 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 61 TotalNumberOfCompositions, 2409 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 868, independent: 690, independent conditional: 0, independent unconditional: 690, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 428, independent: 381, independent conditional: 0, independent unconditional: 381, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 868, independent: 309, independent conditional: 0, independent unconditional: 309, dependent: 131, dependent conditional: 0, dependent unconditional: 131, unknown: 428, unknown conditional: 0, unknown unconditional: 428] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, 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, 106 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: 4.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 258 IncrementalHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 10 mSDtfsCounter, 258 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=3, InterpolantAutomatonStates: 27, 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, 0.9s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 398 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2023-08-26 22:23:10,311 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...