/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_11_fmaxsymopt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:21:27,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:21:27,754 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:21:27,756 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:21:27,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:21:27,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:21:27,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:21:27,781 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:21:27,781 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:21:27,782 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:21:27,782 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:21:27,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:21:27,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:21:27,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:21:27,783 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:21:27,783 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:21:27,783 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:21:27,784 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:21:27,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:21:27,784 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:21:27,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:21:27,784 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:21:27,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:21:27,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:21:27,785 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:21:27,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:21:27,786 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:21:27,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:21:27,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:21:27,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:21:27,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:21:27,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:21:27,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:21:27,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:21:27,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:21:27,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:21:27,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:21:27,788 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:21:27,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:21:27,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:21:27,789 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:21:27,805 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:21:28,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:21:28,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:21:28,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:21:28,040 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:21:28,041 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:21:28,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_11_fmaxsymopt_bound2.i [2023-08-04 04:21:29,036 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:21:29,211 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:21:29,211 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_11_fmaxsymopt_bound2.i [2023-08-04 04:21:29,223 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692316159/a0f610aab58649908b08d8d7167b3da3/FLAGb0e806e06 [2023-08-04 04:21:29,240 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692316159/a0f610aab58649908b08d8d7167b3da3 [2023-08-04 04:21:29,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:21:29,246 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:21:29,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:21:29,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:21:29,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:21:29,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:21:29" (1/1) ... [2023-08-04 04:21:29,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f997a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29, skipping insertion in model container [2023-08-04 04:21:29,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:21:29" (1/1) ... [2023-08-04 04:21:29,285 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:21:29,542 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_11_fmaxsymopt_bound2.i[30540,30553] [2023-08-04 04:21:29,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:21:29,558 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:21:29,583 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-04 04:21:29,584 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-04 04:21:29,597 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_11_fmaxsymopt_bound2.i[30540,30553] [2023-08-04 04:21:29,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:21:29,631 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:21:29,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29 WrapperNode [2023-08-04 04:21:29,634 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:21:29,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:21:29,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:21:29,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:21:29,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29" (1/1) ... [2023-08-04 04:21:29,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29" (1/1) ... [2023-08-04 04:21:29,682 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 87 [2023-08-04 04:21:29,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:21:29,683 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:21:29,683 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:21:29,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:21:29,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29" (1/1) ... [2023-08-04 04:21:29,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29" (1/1) ... [2023-08-04 04:21:29,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29" (1/1) ... [2023-08-04 04:21:29,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29" (1/1) ... [2023-08-04 04:21:29,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29" (1/1) ... [2023-08-04 04:21:29,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29" (1/1) ... [2023-08-04 04:21:29,718 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29" (1/1) ... [2023-08-04 04:21:29,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29" (1/1) ... [2023-08-04 04:21:29,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:21:29,720 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:21:29,720 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:21:29,721 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:21:29,721 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29" (1/1) ... [2023-08-04 04:21:29,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:21:29,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:21:29,746 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) [2023-08-04 04:21:29,750 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 [2023-08-04 04:21:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:21:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-04 04:21:29,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-04 04:21:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:21:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:21:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:21:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:21:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:21:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:21:29,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:21:29,772 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:21:29,848 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:21:29,850 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:21:29,971 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:21:29,989 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:21:29,989 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 04:21:29,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:21:29 BoogieIcfgContainer [2023-08-04 04:21:29,991 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:21:29,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:21:29,992 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:21:29,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:21:29,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:21:29" (1/3) ... [2023-08-04 04:21:29,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664a1161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:21:29, skipping insertion in model container [2023-08-04 04:21:29,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:21:29" (2/3) ... [2023-08-04 04:21:29,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664a1161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:21:29, skipping insertion in model container [2023-08-04 04:21:29,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:21:29" (3/3) ... [2023-08-04 04:21:29,996 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_11_fmaxsymopt_bound2.i [2023-08-04 04:21:30,000 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:21:30,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:21:30,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:21:30,007 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:21:30,070 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:21:30,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 82 transitions, 169 flow [2023-08-04 04:21:30,124 INFO L124 PetriNetUnfolderBase]: 9/92 cut-off events. [2023-08-04 04:21:30,124 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:21:30,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 9/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 59. Up to 4 conditions per place. [2023-08-04 04:21:30,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 82 transitions, 169 flow [2023-08-04 04:21:30,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 82 transitions, 169 flow [2023-08-04 04:21:30,132 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:21:30,138 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 82 transitions, 169 flow [2023-08-04 04:21:30,139 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 82 transitions, 169 flow [2023-08-04 04:21:30,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 82 transitions, 169 flow [2023-08-04 04:21:30,155 INFO L124 PetriNetUnfolderBase]: 9/92 cut-off events. [2023-08-04 04:21:30,156 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:21:30,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 9/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 59. Up to 4 conditions per place. [2023-08-04 04:21:30,157 INFO L119 LiptonReduction]: Number of co-enabled transitions 1408 [2023-08-04 04:21:32,521 INFO L134 LiptonReduction]: Checked pairs total: 1293 [2023-08-04 04:21:32,521 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-04 04:21:32,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:21:32,534 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=true, 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;@6ae4790d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:21:32,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:21:32,537 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:21:32,537 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2023-08-04 04:21:32,537 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:21:32,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:32,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:21:32,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:21:32,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:32,542 INFO L85 PathProgramCache]: Analyzing trace with hash 377439783, now seen corresponding path program 1 times [2023-08-04 04:21:32,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:32,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285584108] [2023-08-04 04:21:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:32,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:21:32,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:32,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285584108] [2023-08-04 04:21:32,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285584108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:32,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:21:32,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:21:32,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357643515] [2023-08-04 04:21:32,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:32,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:21:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:32,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:21:32,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:21:32,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 168 [2023-08-04 04:21:32,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 10 transitions, 25 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2023-08-04 04:21:32,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:32,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 168 [2023-08-04 04:21:32,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:32,711 INFO L124 PetriNetUnfolderBase]: 10/26 cut-off events. [2023-08-04 04:21:32,711 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:21:32,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 26 events. 10/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 6 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 42. Up to 26 conditions per place. [2023-08-04 04:21:32,712 INFO L140 encePairwiseOnDemand]: 167/168 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2023-08-04 04:21:32,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 9 transitions, 39 flow [2023-08-04 04:21:32,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:21:32,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:21:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 157 transitions. [2023-08-04 04:21:32,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2023-08-04 04:21:32,725 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 157 transitions. [2023-08-04 04:21:32,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 157 transitions. [2023-08-04 04:21:32,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:32,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 157 transitions. [2023-08-04 04:21:32,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 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) [2023-08-04 04:21:32,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 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) [2023-08-04 04:21:32,733 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 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) [2023-08-04 04:21:32,735 INFO L175 Difference]: Start difference. First operand has 12 places, 10 transitions, 25 flow. Second operand 2 states and 157 transitions. [2023-08-04 04:21:32,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 9 transitions, 39 flow [2023-08-04 04:21:32,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 9 transitions, 39 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:21:32,737 INFO L231 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2023-08-04 04:21:32,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2023-08-04 04:21:32,741 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, 0 predicate places. [2023-08-04 04:21:32,741 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2023-08-04 04:21:32,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2023-08-04 04:21:32,743 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-04 04:21:32,743 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-04 04:21:32,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:21:32,744 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:21:32,746 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-08-04 04:21:32,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 82 transitions, 169 flow [2023-08-04 04:21:32,760 INFO L124 PetriNetUnfolderBase]: 9/92 cut-off events. [2023-08-04 04:21:32,760 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:21:32,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 9/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 59. Up to 4 conditions per place. [2023-08-04 04:21:32,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 82 transitions, 169 flow [2023-08-04 04:21:32,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 82 transitions, 169 flow [2023-08-04 04:21:32,762 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:21:32,762 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 82 transitions, 169 flow [2023-08-04 04:21:32,762 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 82 transitions, 169 flow [2023-08-04 04:21:32,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 82 transitions, 169 flow [2023-08-04 04:21:32,770 INFO L124 PetriNetUnfolderBase]: 9/92 cut-off events. [2023-08-04 04:21:32,771 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:21:32,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 9/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 59. Up to 4 conditions per place. [2023-08-04 04:21:32,772 INFO L119 LiptonReduction]: Number of co-enabled transitions 1408 [2023-08-04 04:21:34,809 INFO L134 LiptonReduction]: Checked pairs total: 1303 [2023-08-04 04:21:34,809 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-04 04:21:34,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:21:34,811 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=true, 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;@6ae4790d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:21:34,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:21:34,813 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:21:34,813 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-04 04:21:34,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:21:34,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:34,813 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:21:34,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:21:34,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:34,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1414589234, now seen corresponding path program 1 times [2023-08-04 04:21:34,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:34,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221579015] [2023-08-04 04:21:34,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:34,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:21:34,851 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:21:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:21:34,876 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:21:34,877 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:21:34,877 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:21:34,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:21:34,877 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:21:34,878 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:21:34,878 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:21:34,878 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:21:34,892 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:21:34,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 127 transitions, 266 flow [2023-08-04 04:21:34,910 INFO L124 PetriNetUnfolderBase]: 17/152 cut-off events. [2023-08-04 04:21:34,910 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:21:34,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 152 events. 17/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 276 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-08-04 04:21:34,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 127 transitions, 266 flow [2023-08-04 04:21:34,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 127 transitions, 266 flow [2023-08-04 04:21:34,913 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:21:34,913 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 127 transitions, 266 flow [2023-08-04 04:21:34,914 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 127 transitions, 266 flow [2023-08-04 04:21:34,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 127 transitions, 266 flow [2023-08-04 04:21:34,934 INFO L124 PetriNetUnfolderBase]: 17/152 cut-off events. [2023-08-04 04:21:34,934 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:21:34,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 152 events. 17/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 276 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-08-04 04:21:34,939 INFO L119 LiptonReduction]: Number of co-enabled transitions 6776 [2023-08-04 04:21:37,084 INFO L134 LiptonReduction]: Checked pairs total: 9871 [2023-08-04 04:21:37,084 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-04 04:21:37,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:21:37,087 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=true, 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;@6ae4790d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:21:37,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 04:21:37,090 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:21:37,090 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2023-08-04 04:21:37,090 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:21:37,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:37,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 04:21:37,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:21:37,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:37,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1401784268, now seen corresponding path program 1 times [2023-08-04 04:21:37,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:37,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198971920] [2023-08-04 04:21:37,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:37,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:37,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:21:37,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:37,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198971920] [2023-08-04 04:21:37,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198971920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:37,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:21:37,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:21:37,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734979169] [2023-08-04 04:21:37,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:37,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:21:37,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:37,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:21:37,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:21:37,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 243 [2023-08-04 04:21:37,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 114.5) internal successors, (229), 2 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) [2023-08-04 04:21:37,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:37,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 243 [2023-08-04 04:21:37,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:37,177 INFO L124 PetriNetUnfolderBase]: 220/448 cut-off events. [2023-08-04 04:21:37,178 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-04 04:21:37,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 448 events. 220/448 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2003 event pairs, 152 based on Foata normal form. 43/392 useless extension candidates. Maximal degree in co-relation 223. Up to 320 conditions per place. [2023-08-04 04:21:37,181 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 16 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2023-08-04 04:21:37,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 28 transitions, 100 flow [2023-08-04 04:21:37,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:21:37,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:21:37,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 244 transitions. [2023-08-04 04:21:37,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020576131687243 [2023-08-04 04:21:37,187 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 244 transitions. [2023-08-04 04:21:37,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 244 transitions. [2023-08-04 04:21:37,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:37,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 244 transitions. [2023-08-04 04:21:37,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 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) [2023-08-04 04:21:37,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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) [2023-08-04 04:21:37,190 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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) [2023-08-04 04:21:37,190 INFO L175 Difference]: Start difference. First operand has 29 places, 32 transitions, 76 flow. Second operand 2 states and 244 transitions. [2023-08-04 04:21:37,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 28 transitions, 100 flow [2023-08-04 04:21:37,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 98 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-04 04:21:37,221 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 66 flow [2023-08-04 04:21:37,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=66, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2023-08-04 04:21:37,222 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-08-04 04:21:37,222 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 66 flow [2023-08-04 04:21:37,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 114.5) internal successors, (229), 2 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) [2023-08-04 04:21:37,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:37,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:37,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:21:37,223 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:21:37,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:37,224 INFO L85 PathProgramCache]: Analyzing trace with hash 535748399, now seen corresponding path program 1 times [2023-08-04 04:21:37,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:37,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192228290] [2023-08-04 04:21:37,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:37,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:21:37,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192228290] [2023-08-04 04:21:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192228290] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:37,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:21:37,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:21:37,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971391095] [2023-08-04 04:21:37,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:37,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:21:37,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:37,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:21:37,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:21:37,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 243 [2023-08-04 04:21:37,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2023-08-04 04:21:37,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:37,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 243 [2023-08-04 04:21:37,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:37,346 INFO L124 PetriNetUnfolderBase]: 255/491 cut-off events. [2023-08-04 04:21:37,347 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-04 04:21:37,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 491 events. 255/491 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2205 event pairs, 152 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 897. Up to 320 conditions per place. [2023-08-04 04:21:37,349 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 24 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-04 04:21:37,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 143 flow [2023-08-04 04:21:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:21:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:21:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-04 04:21:37,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732510288065844 [2023-08-04 04:21:37,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-04 04:21:37,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-04 04:21:37,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:37,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-04 04:21:37,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-08-04 04:21:37,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 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) [2023-08-04 04:21:37,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 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) [2023-08-04 04:21:37,354 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 66 flow. Second operand 3 states and 345 transitions. [2023-08-04 04:21:37,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 143 flow [2023-08-04 04:21:37,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 143 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:21:37,355 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 78 flow [2023-08-04 04:21:37,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2023-08-04 04:21:37,356 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2023-08-04 04:21:37,356 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 78 flow [2023-08-04 04:21:37,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2023-08-04 04:21:37,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:37,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:37,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:21:37,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:21:37,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:37,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1153376622, now seen corresponding path program 1 times [2023-08-04 04:21:37,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:37,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853141309] [2023-08-04 04:21:37,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:37,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:21:37,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:37,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853141309] [2023-08-04 04:21:37,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853141309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:37,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:21:37,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:21:37,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527228672] [2023-08-04 04:21:37,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:37,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:21:37,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:21:37,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:21:37,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 243 [2023-08-04 04:21:37,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2023-08-04 04:21:37,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:37,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 243 [2023-08-04 04:21:37,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:37,468 INFO L124 PetriNetUnfolderBase]: 428/800 cut-off events. [2023-08-04 04:21:37,468 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-08-04 04:21:37,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1632 conditions, 800 events. 428/800 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3810 event pairs, 196 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 1625. Up to 444 conditions per place. [2023-08-04 04:21:37,471 INFO L140 encePairwiseOnDemand]: 238/243 looper letters, 29 selfloop transitions, 4 changer transitions 1/41 dead transitions. [2023-08-04 04:21:37,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 175 flow [2023-08-04 04:21:37,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:21:37,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:21:37,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-08-04 04:21:37,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663923182441701 [2023-08-04 04:21:37,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-08-04 04:21:37,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-08-04 04:21:37,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:37,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-08-04 04:21:37,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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) [2023-08-04 04:21:37,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 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) [2023-08-04 04:21:37,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 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) [2023-08-04 04:21:37,476 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 78 flow. Second operand 3 states and 340 transitions. [2023-08-04 04:21:37,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 175 flow [2023-08-04 04:21:37,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 171 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 04:21:37,477 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 100 flow [2023-08-04 04:21:37,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-04 04:21:37,478 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-08-04 04:21:37,478 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 100 flow [2023-08-04 04:21:37,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2023-08-04 04:21:37,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:37,478 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:37,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:21:37,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:21:37,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:37,479 INFO L85 PathProgramCache]: Analyzing trace with hash 613186185, now seen corresponding path program 1 times [2023-08-04 04:21:37,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:37,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411948538] [2023-08-04 04:21:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:37,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:21:37,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:37,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411948538] [2023-08-04 04:21:37,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411948538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:37,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:21:37,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:21:37,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816115541] [2023-08-04 04:21:37,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:37,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:21:37,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:37,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:21:37,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:21:37,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 243 [2023-08-04 04:21:37,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 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) [2023-08-04 04:21:37,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:37,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 243 [2023-08-04 04:21:37,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:37,586 INFO L124 PetriNetUnfolderBase]: 335/689 cut-off events. [2023-08-04 04:21:37,587 INFO L125 PetriNetUnfolderBase]: For 139/143 co-relation queries the response was YES. [2023-08-04 04:21:37,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1428 conditions, 689 events. 335/689 cut-off events. For 139/143 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3377 event pairs, 213 based on Foata normal form. 0/563 useless extension candidates. Maximal degree in co-relation 1420. Up to 445 conditions per place. [2023-08-04 04:21:37,590 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 26 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-04 04:21:37,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 184 flow [2023-08-04 04:21:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:21:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:21:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-08-04 04:21:37,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4718792866941015 [2023-08-04 04:21:37,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-08-04 04:21:37,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-08-04 04:21:37,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:37,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-08-04 04:21:37,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2023-08-04 04:21:37,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 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) [2023-08-04 04:21:37,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 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) [2023-08-04 04:21:37,594 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 100 flow. Second operand 3 states and 344 transitions. [2023-08-04 04:21:37,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 184 flow [2023-08-04 04:21:37,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:21:37,596 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 104 flow [2023-08-04 04:21:37,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-08-04 04:21:37,597 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2023-08-04 04:21:37,597 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 104 flow [2023-08-04 04:21:37,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 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) [2023-08-04 04:21:37,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:37,598 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:37,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:21:37,598 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:21:37,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:37,598 INFO L85 PathProgramCache]: Analyzing trace with hash -813053990, now seen corresponding path program 1 times [2023-08-04 04:21:37,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:37,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869570308] [2023-08-04 04:21:37,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:37,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 04:21:37,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:37,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869570308] [2023-08-04 04:21:37,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869570308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:37,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:21:37,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:21:37,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015189697] [2023-08-04 04:21:37,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:37,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:21:37,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:21:37,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:21:37,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 243 [2023-08-04 04:21:37,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-08-04 04:21:37,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:37,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 243 [2023-08-04 04:21:37,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:37,719 INFO L124 PetriNetUnfolderBase]: 580/954 cut-off events. [2023-08-04 04:21:37,719 INFO L125 PetriNetUnfolderBase]: For 249/253 co-relation queries the response was YES. [2023-08-04 04:21:37,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2291 conditions, 954 events. 580/954 cut-off events. For 249/253 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4111 event pairs, 262 based on Foata normal form. 0/764 useless extension candidates. Maximal degree in co-relation 2282. Up to 566 conditions per place. [2023-08-04 04:21:37,722 INFO L140 encePairwiseOnDemand]: 238/243 looper letters, 30 selfloop transitions, 4 changer transitions 3/44 dead transitions. [2023-08-04 04:21:37,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 44 transitions, 212 flow [2023-08-04 04:21:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:21:37,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:21:37,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2023-08-04 04:21:37,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46502057613168724 [2023-08-04 04:21:37,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2023-08-04 04:21:37,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2023-08-04 04:21:37,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:37,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2023-08-04 04:21:37,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2023-08-04 04:21:37,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 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) [2023-08-04 04:21:37,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 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) [2023-08-04 04:21:37,726 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 104 flow. Second operand 3 states and 339 transitions. [2023-08-04 04:21:37,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 44 transitions, 212 flow [2023-08-04 04:21:37,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 208 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 04:21:37,728 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 122 flow [2023-08-04 04:21:37,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-08-04 04:21:37,729 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2023-08-04 04:21:37,729 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 122 flow [2023-08-04 04:21:37,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-08-04 04:21:37,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:37,730 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:37,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:21:37,730 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:21:37,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:37,730 INFO L85 PathProgramCache]: Analyzing trace with hash 45548610, now seen corresponding path program 1 times [2023-08-04 04:21:37,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:37,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372397675] [2023-08-04 04:21:37,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:37,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:21:37,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:37,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372397675] [2023-08-04 04:21:37,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372397675] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:21:37,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006172579] [2023-08-04 04:21:37,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:37,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:21:37,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:21:37,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:21:37,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:21:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:37,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:21:37,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:21:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:21:37,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:21:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:21:37,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006172579] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:21:37,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:21:37,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 04:21:37,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28309230] [2023-08-04 04:21:37,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:21:37,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:21:37,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:37,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:21:37,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:21:37,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-08-04 04:21:37,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 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) [2023-08-04 04:21:37,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:37,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-08-04 04:21:37,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:38,057 INFO L124 PetriNetUnfolderBase]: 395/743 cut-off events. [2023-08-04 04:21:38,058 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2023-08-04 04:21:38,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 743 events. 395/743 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3522 event pairs, 207 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 1842. Up to 475 conditions per place. [2023-08-04 04:21:38,061 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 34 selfloop transitions, 3 changer transitions 2/53 dead transitions. [2023-08-04 04:21:38,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 270 flow [2023-08-04 04:21:38,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:21:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:21:38,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2023-08-04 04:21:38,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47016460905349794 [2023-08-04 04:21:38,063 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 457 transitions. [2023-08-04 04:21:38,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 457 transitions. [2023-08-04 04:21:38,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:38,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 457 transitions. [2023-08-04 04:21:38,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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) [2023-08-04 04:21:38,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 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) [2023-08-04 04:21:38,066 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 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) [2023-08-04 04:21:38,066 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 122 flow. Second operand 4 states and 457 transitions. [2023-08-04 04:21:38,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 270 flow [2023-08-04 04:21:38,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:21:38,068 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 130 flow [2023-08-04 04:21:38,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-08-04 04:21:38,069 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-08-04 04:21:38,069 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 130 flow [2023-08-04 04:21:38,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 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) [2023-08-04 04:21:38,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:38,070 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:38,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 04:21:38,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:21:38,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:21:38,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:38,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1466078325, now seen corresponding path program 2 times [2023-08-04 04:21:38,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:38,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489201709] [2023-08-04 04:21:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:38,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 04:21:38,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:38,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489201709] [2023-08-04 04:21:38,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489201709] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:21:38,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714538397] [2023-08-04 04:21:38,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 04:21:38,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:21:38,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:21:38,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:21:38,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:21:38,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-04 04:21:38,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:21:38,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:21:38,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:21:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:21:38,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:21:38,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714538397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:38,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:21:38,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2023-08-04 04:21:38,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853800664] [2023-08-04 04:21:38,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:38,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:21:38,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:38,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:21:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-04 04:21:38,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 243 [2023-08-04 04:21:38,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 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) [2023-08-04 04:21:38,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:38,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 243 [2023-08-04 04:21:38,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:38,636 INFO L124 PetriNetUnfolderBase]: 745/1249 cut-off events. [2023-08-04 04:21:38,637 INFO L125 PetriNetUnfolderBase]: For 675/675 co-relation queries the response was YES. [2023-08-04 04:21:38,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3361 conditions, 1249 events. 745/1249 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5776 event pairs, 345 based on Foata normal form. 12/1071 useless extension candidates. Maximal degree in co-relation 3350. Up to 709 conditions per place. [2023-08-04 04:21:38,641 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 34 selfloop transitions, 5 changer transitions 15/58 dead transitions. [2023-08-04 04:21:38,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 311 flow [2023-08-04 04:21:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:21:38,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:21:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 525 transitions. [2023-08-04 04:21:38,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2023-08-04 04:21:38,643 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 525 transitions. [2023-08-04 04:21:38,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 525 transitions. [2023-08-04 04:21:38,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:38,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 525 transitions. [2023-08-04 04:21:38,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-08-04 04:21:38,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 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) [2023-08-04 04:21:38,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 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) [2023-08-04 04:21:38,646 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 130 flow. Second operand 5 states and 525 transitions. [2023-08-04 04:21:38,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 311 flow [2023-08-04 04:21:38,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 303 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-04 04:21:38,648 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 141 flow [2023-08-04 04:21:38,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2023-08-04 04:21:38,650 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-08-04 04:21:38,650 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 141 flow [2023-08-04 04:21:38,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 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) [2023-08-04 04:21:38,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:38,650 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:38,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:21:38,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-04 04:21:38,855 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:21:38,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash 51380981, now seen corresponding path program 3 times [2023-08-04 04:21:38,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:38,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106692985] [2023-08-04 04:21:38,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:38,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 04:21:38,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:38,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106692985] [2023-08-04 04:21:38,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106692985] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:21:38,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830640733] [2023-08-04 04:21:38,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 04:21:38,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:21:38,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:21:38,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:21:38,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:21:38,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-04 04:21:38,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:21:38,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:21:38,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:21:39,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:21:39,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:21:39,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830640733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:39,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:21:39,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2023-08-04 04:21:39,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187191531] [2023-08-04 04:21:39,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:39,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:21:39,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:39,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:21:39,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-04 04:21:39,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 243 [2023-08-04 04:21:39,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 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) [2023-08-04 04:21:39,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:39,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 243 [2023-08-04 04:21:39,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:39,182 INFO L124 PetriNetUnfolderBase]: 732/1240 cut-off events. [2023-08-04 04:21:39,182 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2023-08-04 04:21:39,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 1240 events. 732/1240 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5644 event pairs, 514 based on Foata normal form. 12/1061 useless extension candidates. Maximal degree in co-relation 3368. Up to 1014 conditions per place. [2023-08-04 04:21:39,186 INFO L140 encePairwiseOnDemand]: 236/243 looper letters, 37 selfloop transitions, 5 changer transitions 12/58 dead transitions. [2023-08-04 04:21:39,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 336 flow [2023-08-04 04:21:39,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:21:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:21:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 524 transitions. [2023-08-04 04:21:39,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312757201646091 [2023-08-04 04:21:39,188 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 524 transitions. [2023-08-04 04:21:39,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 524 transitions. [2023-08-04 04:21:39,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:39,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 524 transitions. [2023-08-04 04:21:39,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2023-08-04 04:21:39,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 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) [2023-08-04 04:21:39,191 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 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) [2023-08-04 04:21:39,191 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 141 flow. Second operand 5 states and 524 transitions. [2023-08-04 04:21:39,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 336 flow [2023-08-04 04:21:39,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 327 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 04:21:39,195 INFO L231 Difference]: Finished difference. Result has 50 places, 33 transitions, 155 flow [2023-08-04 04:21:39,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2023-08-04 04:21:39,196 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2023-08-04 04:21:39,196 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 155 flow [2023-08-04 04:21:39,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 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) [2023-08-04 04:21:39,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:39,196 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:39,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 04:21:39,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:21:39,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:21:39,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:39,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1746064865, now seen corresponding path program 1 times [2023-08-04 04:21:39,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:39,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548342173] [2023-08-04 04:21:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:39,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 04:21:39,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:39,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548342173] [2023-08-04 04:21:39,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548342173] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:21:39,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269150844] [2023-08-04 04:21:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:39,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:21:39,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:21:39,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:21:39,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 04:21:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:39,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:21:39,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:21:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 04:21:39,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:21:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 04:21:39,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269150844] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:21:39,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:21:39,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-04 04:21:39,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62190433] [2023-08-04 04:21:39,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:21:39,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:21:39,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:39,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:21:39,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:21:39,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-08-04 04:21:39,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 33 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2023-08-04 04:21:39,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:39,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-08-04 04:21:39,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:39,637 INFO L124 PetriNetUnfolderBase]: 347/695 cut-off events. [2023-08-04 04:21:39,637 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2023-08-04 04:21:39,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 695 events. 347/695 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3167 event pairs, 213 based on Foata normal form. 0/579 useless extension candidates. Maximal degree in co-relation 1902. Up to 441 conditions per place. [2023-08-04 04:21:39,640 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 34 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-08-04 04:21:39,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 289 flow [2023-08-04 04:21:39,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:21:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:21:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2023-08-04 04:21:39,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46399176954732513 [2023-08-04 04:21:39,641 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2023-08-04 04:21:39,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2023-08-04 04:21:39,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:39,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2023-08-04 04:21:39,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 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) [2023-08-04 04:21:39,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 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) [2023-08-04 04:21:39,644 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 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) [2023-08-04 04:21:39,644 INFO L175 Difference]: Start difference. First operand has 50 places, 33 transitions, 155 flow. Second operand 4 states and 451 transitions. [2023-08-04 04:21:39,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 289 flow [2023-08-04 04:21:39,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 266 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-04 04:21:39,649 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 148 flow [2023-08-04 04:21:39,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2023-08-04 04:21:39,650 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-08-04 04:21:39,650 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 148 flow [2023-08-04 04:21:39,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2023-08-04 04:21:39,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:39,650 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:39,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 04:21:39,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:21:39,855 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:21:39,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:39,856 INFO L85 PathProgramCache]: Analyzing trace with hash 711891528, now seen corresponding path program 2 times [2023-08-04 04:21:39,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:39,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109934856] [2023-08-04 04:21:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:39,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 04:21:39,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:39,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109934856] [2023-08-04 04:21:39,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109934856] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:39,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:21:39,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-04 04:21:39,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195070920] [2023-08-04 04:21:39,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:39,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:21:39,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:39,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:21:39,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:21:39,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 243 [2023-08-04 04:21:39,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 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) [2023-08-04 04:21:39,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:39,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 243 [2023-08-04 04:21:39,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:40,084 INFO L124 PetriNetUnfolderBase]: 591/1027 cut-off events. [2023-08-04 04:21:40,085 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-08-04 04:21:40,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 1027 events. 591/1027 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4484 event pairs, 277 based on Foata normal form. 12/874 useless extension candidates. Maximal degree in co-relation 2877. Up to 577 conditions per place. [2023-08-04 04:21:40,088 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 35 selfloop transitions, 5 changer transitions 13/57 dead transitions. [2023-08-04 04:21:40,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 322 flow [2023-08-04 04:21:40,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:21:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:21:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 521 transitions. [2023-08-04 04:21:40,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4288065843621399 [2023-08-04 04:21:40,090 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 521 transitions. [2023-08-04 04:21:40,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 521 transitions. [2023-08-04 04:21:40,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:40,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 521 transitions. [2023-08-04 04:21:40,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 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) [2023-08-04 04:21:40,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 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) [2023-08-04 04:21:40,094 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 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) [2023-08-04 04:21:40,094 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 148 flow. Second operand 5 states and 521 transitions. [2023-08-04 04:21:40,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 322 flow [2023-08-04 04:21:40,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 314 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-04 04:21:40,097 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 159 flow [2023-08-04 04:21:40,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2023-08-04 04:21:40,097 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2023-08-04 04:21:40,097 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 159 flow [2023-08-04 04:21:40,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 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) [2023-08-04 04:21:40,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:40,098 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:40,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 04:21:40,098 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:21:40,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash -2004004010, now seen corresponding path program 3 times [2023-08-04 04:21:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:40,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24781174] [2023-08-04 04:21:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:40,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 04:21:40,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:40,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24781174] [2023-08-04 04:21:40,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24781174] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:40,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:21:40,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-04 04:21:40,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668550936] [2023-08-04 04:21:40,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:40,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:21:40,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:40,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:21:40,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:21:40,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 243 [2023-08-04 04:21:40,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 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) [2023-08-04 04:21:40,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:40,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 243 [2023-08-04 04:21:40,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:40,316 INFO L124 PetriNetUnfolderBase]: 578/1018 cut-off events. [2023-08-04 04:21:40,316 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2023-08-04 04:21:40,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2949 conditions, 1018 events. 578/1018 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4521 event pairs, 388 based on Foata normal form. 12/864 useless extension candidates. Maximal degree in co-relation 2935. Up to 784 conditions per place. [2023-08-04 04:21:40,320 INFO L140 encePairwiseOnDemand]: 236/243 looper letters, 39 selfloop transitions, 5 changer transitions 12/60 dead transitions. [2023-08-04 04:21:40,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 369 flow [2023-08-04 04:21:40,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:21:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:21:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 524 transitions. [2023-08-04 04:21:40,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312757201646091 [2023-08-04 04:21:40,322 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 524 transitions. [2023-08-04 04:21:40,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 524 transitions. [2023-08-04 04:21:40,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:40,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 524 transitions. [2023-08-04 04:21:40,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2023-08-04 04:21:40,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 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) [2023-08-04 04:21:40,325 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 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) [2023-08-04 04:21:40,325 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 159 flow. Second operand 5 states and 524 transitions. [2023-08-04 04:21:40,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 369 flow [2023-08-04 04:21:40,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 358 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-04 04:21:40,328 INFO L231 Difference]: Finished difference. Result has 56 places, 34 transitions, 172 flow [2023-08-04 04:21:40,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=56, PETRI_TRANSITIONS=34} [2023-08-04 04:21:40,329 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2023-08-04 04:21:40,329 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 34 transitions, 172 flow [2023-08-04 04:21:40,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 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) [2023-08-04 04:21:40,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:40,329 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:40,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 04:21:40,329 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:21:40,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:40,330 INFO L85 PathProgramCache]: Analyzing trace with hash -334298856, now seen corresponding path program 1 times [2023-08-04 04:21:40,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:40,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434128388] [2023-08-04 04:21:40,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:40,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 04:21:40,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:40,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434128388] [2023-08-04 04:21:40,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434128388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:40,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:21:40,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:21:40,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644756493] [2023-08-04 04:21:40,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:40,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:21:40,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:40,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:21:40,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:21:40,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 243 [2023-08-04 04:21:40,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 34 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-08-04 04:21:40,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:40,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 243 [2023-08-04 04:21:40,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:40,444 INFO L124 PetriNetUnfolderBase]: 189/353 cut-off events. [2023-08-04 04:21:40,444 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2023-08-04 04:21:40,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 353 events. 189/353 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1376 event pairs, 93 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 986. Up to 213 conditions per place. [2023-08-04 04:21:40,445 INFO L140 encePairwiseOnDemand]: 241/243 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2023-08-04 04:21:40,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 182 flow [2023-08-04 04:21:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:21:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:21:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-08-04 04:21:40,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869684499314129 [2023-08-04 04:21:40,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-08-04 04:21:40,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-08-04 04:21:40,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:40,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-08-04 04:21:40,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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) [2023-08-04 04:21:40,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 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) [2023-08-04 04:21:40,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 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) [2023-08-04 04:21:40,449 INFO L175 Difference]: Start difference. First operand has 56 places, 34 transitions, 172 flow. Second operand 3 states and 355 transitions. [2023-08-04 04:21:40,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 182 flow [2023-08-04 04:21:40,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 177 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-04 04:21:40,450 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-08-04 04:21:40,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-08-04 04:21:40,450 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-08-04 04:21:40,450 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-08-04 04:21:40,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-08-04 04:21:40,450 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 04:21:40,450 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 04:21:40,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 04:21:40,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 04:21:40,451 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1] [2023-08-04 04:21:40,451 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 04:21:40,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 127 transitions, 266 flow [2023-08-04 04:21:40,459 INFO L124 PetriNetUnfolderBase]: 17/152 cut-off events. [2023-08-04 04:21:40,459 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:21:40,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 152 events. 17/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 276 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-08-04 04:21:40,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 127 transitions, 266 flow [2023-08-04 04:21:40,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 127 transitions, 266 flow [2023-08-04 04:21:40,461 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:21:40,461 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 127 transitions, 266 flow [2023-08-04 04:21:40,461 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 127 transitions, 266 flow [2023-08-04 04:21:40,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 127 transitions, 266 flow [2023-08-04 04:21:40,468 INFO L124 PetriNetUnfolderBase]: 17/152 cut-off events. [2023-08-04 04:21:40,468 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:21:40,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 152 events. 17/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 276 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-08-04 04:21:40,470 INFO L119 LiptonReduction]: Number of co-enabled transitions 6776 [2023-08-04 04:21:42,613 INFO L134 LiptonReduction]: Checked pairs total: 9914 [2023-08-04 04:21:42,613 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-08-04 04:21:42,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:21:42,615 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=true, 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;@6ae4790d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:21:42,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:21:42,617 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:21:42,617 INFO L124 PetriNetUnfolderBase]: 6/34 cut-off events. [2023-08-04 04:21:42,617 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:21:42,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:21:42,617 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 04:21:42,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:21:42,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:21:42,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1002117080, now seen corresponding path program 1 times [2023-08-04 04:21:42,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:21:42,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830785209] [2023-08-04 04:21:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:42,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:21:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:21:42,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:21:42,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830785209] [2023-08-04 04:21:42,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830785209] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:21:42,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542072055] [2023-08-04 04:21:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:21:42,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:21:42,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:21:42,689 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:21:42,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 04:21:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:21:42,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:21:42,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:21:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:21:42,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:21:42,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542072055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:21:42,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:21:42,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 04:21:42,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423165505] [2023-08-04 04:21:42,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:21:42,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:21:42,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:21:42,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:21:42,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:21:42,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 244 [2023-08-04 04:21:42,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 32 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 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) [2023-08-04 04:21:42,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:21:42,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 244 [2023-08-04 04:21:42,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:21:42,805 INFO L124 PetriNetUnfolderBase]: 152/280 cut-off events. [2023-08-04 04:21:42,805 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 04:21:42,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 280 events. 152/280 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 986 event pairs, 0 based on Foata normal form. 34/268 useless extension candidates. Maximal degree in co-relation 116. Up to 161 conditions per place. [2023-08-04 04:21:42,805 INFO L140 encePairwiseOnDemand]: 236/244 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2023-08-04 04:21:42,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 170 flow [2023-08-04 04:21:42,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:21:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:21:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 581 transitions. [2023-08-04 04:21:42,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47622950819672133 [2023-08-04 04:21:42,807 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 581 transitions. [2023-08-04 04:21:42,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 581 transitions. [2023-08-04 04:21:42,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:21:42,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 581 transitions. [2023-08-04 04:21:42,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 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) [2023-08-04 04:21:42,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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) [2023-08-04 04:21:42,809 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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) [2023-08-04 04:21:42,810 INFO L175 Difference]: Start difference. First operand has 29 places, 32 transitions, 76 flow. Second operand 5 states and 581 transitions. [2023-08-04 04:21:42,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 170 flow [2023-08-04 04:21:42,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:21:42,810 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-08-04 04:21:42,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-08-04 04:21:42,810 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-08-04 04:21:42,810 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-08-04 04:21:42,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 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) [2023-08-04 04:21:42,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:21:42,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-04 04:21:43,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-04 04:21:43,015 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:21:43,016 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:21:43,016 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:21:43,016 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:21:43,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:21:43 BasicIcfg [2023-08-04 04:21:43,020 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:21:43,020 INFO L158 Benchmark]: Toolchain (without parser) took 13774.75ms. Allocated memory was 362.8MB in the beginning and 625.0MB in the end (delta: 262.1MB). Free memory was 315.7MB in the beginning and 521.9MB in the end (delta: -206.1MB). Peak memory consumption was 59.1MB. Max. memory is 16.0GB. [2023-08-04 04:21:43,020 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 362.8MB. Free memory is still 316.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:21:43,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.46ms. Allocated memory is still 362.8MB. Free memory was 315.4MB in the beginning and 295.8MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 04:21:43,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.03ms. Allocated memory is still 362.8MB. Free memory was 295.8MB in the beginning and 293.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:21:43,021 INFO L158 Benchmark]: Boogie Preprocessor took 36.79ms. Allocated memory is still 362.8MB. Free memory was 293.7MB in the beginning and 292.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:21:43,021 INFO L158 Benchmark]: RCFGBuilder took 270.28ms. Allocated memory is still 362.8MB. Free memory was 292.3MB in the beginning and 276.9MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-04 04:21:43,021 INFO L158 Benchmark]: TraceAbstraction took 13028.08ms. Allocated memory was 362.8MB in the beginning and 625.0MB in the end (delta: 262.1MB). Free memory was 276.2MB in the beginning and 521.9MB in the end (delta: -245.7MB). Peak memory consumption was 19.3MB. Max. memory is 16.0GB. [2023-08-04 04:21:43,022 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 362.8MB. Free memory is still 316.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 387.46ms. Allocated memory is still 362.8MB. Free memory was 315.4MB in the beginning and 295.8MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.03ms. Allocated memory is still 362.8MB. Free memory was 295.8MB in the beginning and 293.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.79ms. Allocated memory is still 362.8MB. Free memory was 293.7MB in the beginning and 292.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 270.28ms. Allocated memory is still 362.8MB. Free memory was 292.3MB in the beginning and 276.9MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 13028.08ms. Allocated memory was 362.8MB in the beginning and 625.0MB in the end (delta: 262.1MB). Free memory was 276.2MB in the beginning and 521.9MB in the end (delta: -245.7MB). Peak memory consumption was 19.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 254]: Unsoundness Warning unspecified type, defaulting to int C: short [254] - GenericResultAtLocation [Line: 254]: Unsoundness Warning unspecified type, defaulting to int C: short [254] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 77 PlacesBefore, 12 PlacesAfterwards, 82 TransitionsBefore, 10 TransitionsAfterwards, 1408 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 7 ChoiceCompositions, 86 TotalNumberOfCompositions, 1293 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1122, independent: 1106, independent conditional: 0, independent unconditional: 1106, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 748, independent: 743, independent conditional: 0, independent unconditional: 743, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1122, independent: 363, independent conditional: 0, independent unconditional: 363, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 748, unknown conditional: 0, unknown unconditional: 748] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 77 PlacesBefore, 12 PlacesAfterwards, 82 TransitionsBefore, 10 TransitionsAfterwards, 1408 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 7 ChoiceCompositions, 87 TotalNumberOfCompositions, 1303 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1143, independent: 1127, independent conditional: 0, independent unconditional: 1127, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 746, independent: 741, independent conditional: 0, independent unconditional: 741, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1143, independent: 386, independent conditional: 0, independent unconditional: 386, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 746, unknown conditional: 0, unknown unconditional: 746] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 117 PlacesBefore, 29 PlacesAfterwards, 127 TransitionsBefore, 32 TransitionsAfterwards, 6776 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 7 ChoiceCompositions, 116 TotalNumberOfCompositions, 9871 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6962, independent: 6798, independent conditional: 0, independent unconditional: 6798, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3676, independent: 3653, independent conditional: 0, independent unconditional: 3653, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6962, independent: 3145, independent conditional: 0, independent unconditional: 3145, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 3676, unknown conditional: 0, unknown unconditional: 3676] , Statistics on independence cache: Total cache size (in pairs): 115, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 117 PlacesBefore, 29 PlacesAfterwards, 127 TransitionsBefore, 32 TransitionsAfterwards, 6776 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 7 ChoiceCompositions, 117 TotalNumberOfCompositions, 9914 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6737, independent: 6573, independent conditional: 0, independent unconditional: 6573, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3658, independent: 3636, independent conditional: 0, independent unconditional: 3636, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6737, independent: 2937, independent conditional: 0, independent unconditional: 2937, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 3658, unknown conditional: 0, unknown unconditional: 3658] , Statistics on independence cache: Total cache size (in pairs): 110, Positive cache size: 100, Positive conditional cache size: 0, Positive unconditional cache size: 100, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 719]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 113 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 151 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.6s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 563 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 356 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1216 IncrementalHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 60 mSDtfsCounter, 1216 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 133 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=11, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 274 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 451 SizeOfPredicates, 4 NumberOfNonLiveVariables, 611 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 76/84 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 113 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 151 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.6s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79 IncrementalHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 79 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 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! [2023-08-04 04:21:43,052 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...