/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_69-refine-protected-loop-interval_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:03:54,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:03:54,069 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:03:54,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:03:54,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:03:54,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:03:54,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:03:54,092 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:03:54,093 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:03:54,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:03:54,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:03:54,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:03:54,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:03:54,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:03:54,095 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:03:54,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:03:54,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:03:54,096 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:03:54,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:03:54,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:03:54,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:03:54,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:03:54,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:03:54,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:03:54,101 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:03:54,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:03:54,101 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:03:54,102 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:03:54,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:03:54,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:03:54,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:03:54,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:03:54,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:03:54,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:03:54,104 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:03:54,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:03:54,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:03:54,104 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:03:54,104 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:03:54,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:03:54,105 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:03:54,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:03:54,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:03:54,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:03:54,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:03:54,320 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:03:54,320 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:03:54,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_69-refine-protected-loop-interval_true_bound2.i [2023-08-03 16:03:55,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:03:55,710 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:03:55,711 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_69-refine-protected-loop-interval_true_bound2.i [2023-08-03 16:03:55,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/536f2681e/8a18bd79f50849f396d5f2e566a62176/FLAG0c52e74d7 [2023-08-03 16:03:55,735 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/536f2681e/8a18bd79f50849f396d5f2e566a62176 [2023-08-03 16:03:55,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:03:55,743 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:03:55,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:03:55,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:03:55,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:03:55,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:03:55" (1/1) ... [2023-08-03 16:03:55,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6459cbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:55, skipping insertion in model container [2023-08-03 16:03:55,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:03:55" (1/1) ... [2023-08-03 16:03:55,801 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:03:55,933 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_69-refine-protected-loop-interval_true_bound2.i[1107,1120] [2023-08-03 16:03:56,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:03:56,057 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:03:56,066 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_69-refine-protected-loop-interval_true_bound2.i[1107,1120] [2023-08-03 16:03:56,088 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:03:56,089 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-03 16:03:56,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:03:56,151 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:03:56,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:56 WrapperNode [2023-08-03 16:03:56,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:03:56,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:03:56,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:03:56,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:03:56,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:56" (1/1) ... [2023-08-03 16:03:56,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:56" (1/1) ... [2023-08-03 16:03:56,190 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 105 [2023-08-03 16:03:56,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:03:56,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:03:56,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:03:56,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:03:56,198 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:56" (1/1) ... [2023-08-03 16:03:56,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:56" (1/1) ... [2023-08-03 16:03:56,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:56" (1/1) ... [2023-08-03 16:03:56,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:56" (1/1) ... [2023-08-03 16:03:56,212 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:56" (1/1) ... [2023-08-03 16:03:56,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:56" (1/1) ... [2023-08-03 16:03:56,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:56" (1/1) ... [2023-08-03 16:03:56,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:56" (1/1) ... [2023-08-03 16:03:56,228 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:03:56,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:03:56,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:03:56,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:03:56,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:56" (1/1) ... [2023-08-03 16:03:56,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:03:56,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:56,259 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) [2023-08-03 16:03:56,272 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 [2023-08-03 16:03:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-03 16:03:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-03 16:03:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:03:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:03:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:03:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:03:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:03:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:03:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:03:56,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:03:56,298 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 16:03:56,393 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:03:56,395 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:03:56,539 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:03:56,546 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:03:56,546 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 16:03:56,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:03:56 BoogieIcfgContainer [2023-08-03 16:03:56,548 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:03:56,550 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:03:56,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:03:56,553 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:03:56,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:03:55" (1/3) ... [2023-08-03 16:03:56,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637ffa32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:03:56, skipping insertion in model container [2023-08-03 16:03:56,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:56" (2/3) ... [2023-08-03 16:03:56,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637ffa32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:03:56, skipping insertion in model container [2023-08-03 16:03:56,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:03:56" (3/3) ... [2023-08-03 16:03:56,555 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_69-refine-protected-loop-interval_true_bound2.i [2023-08-03 16:03:56,562 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:03:56,570 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:03:56,571 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 16:03:56,571 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:03:56,619 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:03:56,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 112 transitions, 229 flow [2023-08-03 16:03:56,703 INFO L124 PetriNetUnfolderBase]: 15/144 cut-off events. [2023-08-03 16:03:56,703 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:03:56,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 15/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 345 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2023-08-03 16:03:56,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 112 transitions, 229 flow [2023-08-03 16:03:56,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 112 transitions, 229 flow [2023-08-03 16:03:56,717 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:03:56,724 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 112 transitions, 229 flow [2023-08-03 16:03:56,727 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 112 transitions, 229 flow [2023-08-03 16:03:56,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 112 transitions, 229 flow [2023-08-03 16:03:56,758 INFO L124 PetriNetUnfolderBase]: 15/144 cut-off events. [2023-08-03 16:03:56,758 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:03:56,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 15/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 345 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2023-08-03 16:03:56,762 INFO L119 LiptonReduction]: Number of co-enabled transitions 3344 [2023-08-03 16:03:59,175 INFO L134 LiptonReduction]: Checked pairs total: 5662 [2023-08-03 16:03:59,175 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-03 16:03:59,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:03:59,194 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;@659fe06e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:03:59,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 16:03:59,200 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:03:59,200 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2023-08-03 16:03:59,200 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:03:59,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:59,201 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:03:59,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:03:59,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:59,206 INFO L85 PathProgramCache]: Analyzing trace with hash 680655626, now seen corresponding path program 1 times [2023-08-03 16:03:59,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:59,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347844885] [2023-08-03 16:03:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:59,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:03:59,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:03:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:03:59,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:03:59,346 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:03:59,346 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 16:03:59,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 16:03:59,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 16:03:59,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-03 16:03:59,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 16:03:59,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:03:59,349 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 16:03:59,352 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:03:59,353 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:03:59,372 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:03:59,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 157 transitions, 326 flow [2023-08-03 16:03:59,410 INFO L124 PetriNetUnfolderBase]: 26/226 cut-off events. [2023-08-03 16:03:59,411 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:03:59,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 226 events. 26/226 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 703 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 145. Up to 6 conditions per place. [2023-08-03 16:03:59,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 157 transitions, 326 flow [2023-08-03 16:03:59,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 157 transitions, 326 flow [2023-08-03 16:03:59,415 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:03:59,415 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 157 transitions, 326 flow [2023-08-03 16:03:59,416 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 157 transitions, 326 flow [2023-08-03 16:03:59,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 157 transitions, 326 flow [2023-08-03 16:03:59,446 INFO L124 PetriNetUnfolderBase]: 26/226 cut-off events. [2023-08-03 16:03:59,446 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:03:59,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 226 events. 26/226 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 703 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 145. Up to 6 conditions per place. [2023-08-03 16:03:59,454 INFO L119 LiptonReduction]: Number of co-enabled transitions 10648 [2023-08-03 16:04:02,434 INFO L134 LiptonReduction]: Checked pairs total: 21022 [2023-08-03 16:04:02,434 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-08-03 16:04:02,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:04:02,445 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;@659fe06e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:04:02,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 16:04:02,448 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:04:02,448 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2023-08-03 16:04:02,448 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 16:04:02,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:02,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:02,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:02,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:02,449 INFO L85 PathProgramCache]: Analyzing trace with hash -246653972, now seen corresponding path program 1 times [2023-08-03 16:04:02,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:02,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333228136] [2023-08-03 16:04:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:02,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:02,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:02,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333228136] [2023-08-03 16:04:02,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333228136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:02,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:02,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 16:04:02,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243293324] [2023-08-03 16:04:02,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:02,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:04:02,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:02,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:04:02,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:04:02,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 302 [2023-08-03 16:04:02,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-08-03 16:04:02,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:02,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 302 [2023-08-03 16:04:02,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:03,058 INFO L124 PetriNetUnfolderBase]: 1891/2894 cut-off events. [2023-08-03 16:04:03,058 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-03 16:04:03,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5619 conditions, 2894 events. 1891/2894 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14282 event pairs, 938 based on Foata normal form. 141/2361 useless extension candidates. Maximal degree in co-relation 4683. Up to 2199 conditions per place. [2023-08-03 16:04:03,077 INFO L140 encePairwiseOnDemand]: 285/302 looper letters, 51 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-08-03 16:04:03,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 258 flow [2023-08-03 16:04:03,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:03,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2023-08-03 16:04:03,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066225165562914 [2023-08-03 16:04:03,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2023-08-03 16:04:03,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2023-08-03 16:04:03,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:03,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2023-08-03 16:04:03,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2023-08-03 16:04:03,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 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) [2023-08-03 16:04:03,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 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) [2023-08-03 16:04:03,114 INFO L175 Difference]: Start difference. First operand has 43 places, 48 transitions, 108 flow. Second operand 3 states and 459 transitions. [2023-08-03 16:04:03,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 258 flow [2023-08-03 16:04:03,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 66 transitions, 256 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:04:03,120 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 156 flow [2023-08-03 16:04:03,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2023-08-03 16:04:03,126 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-03 16:04:03,127 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 156 flow [2023-08-03 16:04:03,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-08-03 16:04:03,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:03,128 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:04:03,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:04:03,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:03,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:03,132 INFO L85 PathProgramCache]: Analyzing trace with hash 182988910, now seen corresponding path program 1 times [2023-08-03 16:04:03,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:03,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474552617] [2023-08-03 16:04:03,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:03,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:03,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:03,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474552617] [2023-08-03 16:04:03,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474552617] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:03,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118859342] [2023-08-03 16:04:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:03,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:03,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:03,269 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) [2023-08-03 16:04:03,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 16:04:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:03,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:04:03,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:03,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:04:03,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118859342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:03,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:04:03,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:04:03,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274007557] [2023-08-03 16:04:03,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:03,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:03,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:03,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:03,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:04:03,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 302 [2023-08-03 16:04:03,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 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) [2023-08-03 16:04:03,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:03,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 302 [2023-08-03 16:04:03,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:03,674 INFO L124 PetriNetUnfolderBase]: 1761/2754 cut-off events. [2023-08-03 16:04:03,674 INFO L125 PetriNetUnfolderBase]: For 812/902 co-relation queries the response was YES. [2023-08-03 16:04:03,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6288 conditions, 2754 events. 1761/2754 cut-off events. For 812/902 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 14563 event pairs, 931 based on Foata normal form. 0/2437 useless extension candidates. Maximal degree in co-relation 5334. Up to 2400 conditions per place. [2023-08-03 16:04:03,694 INFO L140 encePairwiseOnDemand]: 298/302 looper letters, 41 selfloop transitions, 4 changer transitions 1/58 dead transitions. [2023-08-03 16:04:03,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 270 flow [2023-08-03 16:04:03,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:03,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:03,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 713 transitions. [2023-08-03 16:04:03,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47218543046357614 [2023-08-03 16:04:03,696 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 713 transitions. [2023-08-03 16:04:03,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 713 transitions. [2023-08-03 16:04:03,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:03,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 713 transitions. [2023-08-03 16:04:03,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 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) [2023-08-03 16:04:03,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 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) [2023-08-03 16:04:03,703 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 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) [2023-08-03 16:04:03,703 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 156 flow. Second operand 5 states and 713 transitions. [2023-08-03 16:04:03,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 270 flow [2023-08-03 16:04:03,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 257 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:03,719 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 164 flow [2023-08-03 16:04:03,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2023-08-03 16:04:03,721 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2023-08-03 16:04:03,721 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 164 flow [2023-08-03 16:04:03,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 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) [2023-08-03 16:04:03,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:03,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:03,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:03,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:03,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:03,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:03,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1977957673, now seen corresponding path program 1 times [2023-08-03 16:04:03,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:03,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614568553] [2023-08-03 16:04:03,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:03,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:03,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:03,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614568553] [2023-08-03 16:04:03,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614568553] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:03,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673505418] [2023-08-03 16:04:03,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:03,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:03,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:03,986 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) [2023-08-03 16:04:03,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 16:04:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:04,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:04:04,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:04,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:04,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673505418] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:04,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:04,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:04:04,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020366644] [2023-08-03 16:04:04,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:04,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:04,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:04,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:04,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:04:04,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 302 [2023-08-03 16:04:04,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 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) [2023-08-03 16:04:04,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:04,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 302 [2023-08-03 16:04:04,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:04,387 INFO L124 PetriNetUnfolderBase]: 1671/2551 cut-off events. [2023-08-03 16:04:04,387 INFO L125 PetriNetUnfolderBase]: For 481/549 co-relation queries the response was YES. [2023-08-03 16:04:04,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5738 conditions, 2551 events. 1671/2551 cut-off events. For 481/549 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 13063 event pairs, 895 based on Foata normal form. 2/2112 useless extension candidates. Maximal degree in co-relation 5166. Up to 2252 conditions per place. [2023-08-03 16:04:04,404 INFO L140 encePairwiseOnDemand]: 299/302 looper letters, 41 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2023-08-03 16:04:04,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 56 transitions, 268 flow [2023-08-03 16:04:04,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:04:04,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:04:04,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 577 transitions. [2023-08-03 16:04:04,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4776490066225166 [2023-08-03 16:04:04,407 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 577 transitions. [2023-08-03 16:04:04,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 577 transitions. [2023-08-03 16:04:04,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:04,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 577 transitions. [2023-08-03 16:04:04,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 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) [2023-08-03 16:04:04,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 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) [2023-08-03 16:04:04,412 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 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) [2023-08-03 16:04:04,412 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 164 flow. Second operand 4 states and 577 transitions. [2023-08-03 16:04:04,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 56 transitions, 268 flow [2023-08-03 16:04:04,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 56 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:04,414 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 163 flow [2023-08-03 16:04:04,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2023-08-03 16:04:04,416 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2023-08-03 16:04:04,416 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 163 flow [2023-08-03 16:04:04,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 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) [2023-08-03 16:04:04,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:04,417 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:04,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:04,622 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,SelfDestructingSolverStorable3 [2023-08-03 16:04:04,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:04,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:04,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2112027633, now seen corresponding path program 1 times [2023-08-03 16:04:04,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:04,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775322522] [2023-08-03 16:04:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:04,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 16:04:04,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:04,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775322522] [2023-08-03 16:04:04,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775322522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:04,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:04,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:04:04,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440741310] [2023-08-03 16:04:04,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:04,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:04:04,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:04,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:04:04,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:04:04,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 302 [2023-08-03 16:04:04,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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) [2023-08-03 16:04:04,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:04,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 302 [2023-08-03 16:04:04,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:04,789 INFO L124 PetriNetUnfolderBase]: 87/241 cut-off events. [2023-08-03 16:04:04,789 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-08-03 16:04:04,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 241 events. 87/241 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 818 event pairs, 5 based on Foata normal form. 96/316 useless extension candidates. Maximal degree in co-relation 471. Up to 151 conditions per place. [2023-08-03 16:04:04,790 INFO L140 encePairwiseOnDemand]: 293/302 looper letters, 23 selfloop transitions, 9 changer transitions 9/53 dead transitions. [2023-08-03 16:04:04,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 53 transitions, 271 flow [2023-08-03 16:04:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-08-03 16:04:04,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47130242825607066 [2023-08-03 16:04:04,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-08-03 16:04:04,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-08-03 16:04:04,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:04,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-08-03 16:04:04,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2023-08-03 16:04:04,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 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) [2023-08-03 16:04:04,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 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) [2023-08-03 16:04:04,796 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 163 flow. Second operand 3 states and 427 transitions. [2023-08-03 16:04:04,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 53 transitions, 271 flow [2023-08-03 16:04:04,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 253 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:04,799 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 143 flow [2023-08-03 16:04:04,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-08-03 16:04:04,801 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2023-08-03 16:04:04,801 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 143 flow [2023-08-03 16:04:04,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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) [2023-08-03 16:04:04,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:04,801 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:04,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 16:04:04,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:04,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:04,802 INFO L85 PathProgramCache]: Analyzing trace with hash -572013373, now seen corresponding path program 1 times [2023-08-03 16:04:04,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:04,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490143304] [2023-08-03 16:04:04,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:04,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:04,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:04,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490143304] [2023-08-03 16:04:04,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490143304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:04,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:04,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:04:04,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285674121] [2023-08-03 16:04:04,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:04,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:04,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:04,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:04,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:04:04,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 302 [2023-08-03 16:04:04,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 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) [2023-08-03 16:04:04,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:04,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 302 [2023-08-03 16:04:04,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:05,047 INFO L124 PetriNetUnfolderBase]: 95/266 cut-off events. [2023-08-03 16:04:05,047 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-08-03 16:04:05,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 266 events. 95/266 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 887 event pairs, 44 based on Foata normal form. 8/266 useless extension candidates. Maximal degree in co-relation 574. Up to 105 conditions per place. [2023-08-03 16:04:05,049 INFO L140 encePairwiseOnDemand]: 289/302 looper letters, 38 selfloop transitions, 10 changer transitions 5/58 dead transitions. [2023-08-03 16:04:05,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 297 flow [2023-08-03 16:04:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 16:04:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 16:04:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 788 transitions. [2023-08-03 16:04:05,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434878587196468 [2023-08-03 16:04:05,051 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 788 transitions. [2023-08-03 16:04:05,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 788 transitions. [2023-08-03 16:04:05,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:05,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 788 transitions. [2023-08-03 16:04:05,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 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) [2023-08-03 16:04:05,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 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) [2023-08-03 16:04:05,057 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 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) [2023-08-03 16:04:05,057 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 143 flow. Second operand 6 states and 788 transitions. [2023-08-03 16:04:05,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 297 flow [2023-08-03 16:04:05,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:05,059 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 199 flow [2023-08-03 16:04:05,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-08-03 16:04:05,060 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2023-08-03 16:04:05,060 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 199 flow [2023-08-03 16:04:05,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 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) [2023-08-03 16:04:05,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:05,060 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:05,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:04:05,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:05,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:05,061 INFO L85 PathProgramCache]: Analyzing trace with hash 385520476, now seen corresponding path program 1 times [2023-08-03 16:04:05,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:05,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380281704] [2023-08-03 16:04:05,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:05,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:05,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:05,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380281704] [2023-08-03 16:04:05,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380281704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:05,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:05,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:04:05,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200506427] [2023-08-03 16:04:05,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:05,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:04:05,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:05,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:04:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:04:05,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 302 [2023-08-03 16:04:05,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 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) [2023-08-03 16:04:05,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:05,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 302 [2023-08-03 16:04:05,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:05,264 INFO L124 PetriNetUnfolderBase]: 97/277 cut-off events. [2023-08-03 16:04:05,264 INFO L125 PetriNetUnfolderBase]: For 202/204 co-relation queries the response was YES. [2023-08-03 16:04:05,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 277 events. 97/277 cut-off events. For 202/204 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 969 event pairs, 22 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 680. Up to 72 conditions per place. [2023-08-03 16:04:05,266 INFO L140 encePairwiseOnDemand]: 292/302 looper letters, 53 selfloop transitions, 19 changer transitions 0/81 dead transitions. [2023-08-03 16:04:05,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 495 flow [2023-08-03 16:04:05,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:05,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 701 transitions. [2023-08-03 16:04:05,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642384105960265 [2023-08-03 16:04:05,268 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 701 transitions. [2023-08-03 16:04:05,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 701 transitions. [2023-08-03 16:04:05,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:05,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 701 transitions. [2023-08-03 16:04:05,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 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) [2023-08-03 16:04:05,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 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) [2023-08-03 16:04:05,273 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 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) [2023-08-03 16:04:05,273 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 199 flow. Second operand 5 states and 701 transitions. [2023-08-03 16:04:05,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 495 flow [2023-08-03 16:04:05,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:05,276 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 339 flow [2023-08-03 16:04:05,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2023-08-03 16:04:05,277 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-08-03 16:04:05,277 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 339 flow [2023-08-03 16:04:05,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 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) [2023-08-03 16:04:05,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:05,277 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:05,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:04:05,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:05,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:05,278 INFO L85 PathProgramCache]: Analyzing trace with hash 345230825, now seen corresponding path program 1 times [2023-08-03 16:04:05,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:05,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110966774] [2023-08-03 16:04:05,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:05,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:05,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:05,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110966774] [2023-08-03 16:04:05,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110966774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:05,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:05,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:04:05,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425566091] [2023-08-03 16:04:05,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:05,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:04:05,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:05,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:04:05,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:04:05,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 302 [2023-08-03 16:04:05,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 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) [2023-08-03 16:04:05,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:05,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 302 [2023-08-03 16:04:05,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:05,463 INFO L124 PetriNetUnfolderBase]: 105/297 cut-off events. [2023-08-03 16:04:05,463 INFO L125 PetriNetUnfolderBase]: For 527/529 co-relation queries the response was YES. [2023-08-03 16:04:05,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 297 events. 105/297 cut-off events. For 527/529 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1068 event pairs, 25 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 857. Up to 73 conditions per place. [2023-08-03 16:04:05,465 INFO L140 encePairwiseOnDemand]: 292/302 looper letters, 53 selfloop transitions, 32 changer transitions 0/94 dead transitions. [2023-08-03 16:04:05,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 94 transitions, 725 flow [2023-08-03 16:04:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:05,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 699 transitions. [2023-08-03 16:04:05,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4629139072847682 [2023-08-03 16:04:05,468 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 699 transitions. [2023-08-03 16:04:05,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 699 transitions. [2023-08-03 16:04:05,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:05,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 699 transitions. [2023-08-03 16:04:05,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 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) [2023-08-03 16:04:05,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 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) [2023-08-03 16:04:05,472 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 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) [2023-08-03 16:04:05,472 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 339 flow. Second operand 5 states and 699 transitions. [2023-08-03 16:04:05,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 94 transitions, 725 flow [2023-08-03 16:04:05,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 94 transitions, 725 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:04:05,475 INFO L231 Difference]: Finished difference. Result has 63 places, 69 transitions, 549 flow [2023-08-03 16:04:05,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=549, PETRI_PLACES=63, PETRI_TRANSITIONS=69} [2023-08-03 16:04:05,476 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2023-08-03 16:04:05,476 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 69 transitions, 549 flow [2023-08-03 16:04:05,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 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) [2023-08-03 16:04:05,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:05,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:05,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 16:04:05,477 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:05,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:05,477 INFO L85 PathProgramCache]: Analyzing trace with hash -314028721, now seen corresponding path program 2 times [2023-08-03 16:04:05,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:05,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800279553] [2023-08-03 16:04:05,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:05,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:05,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:05,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800279553] [2023-08-03 16:04:05,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800279553] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:05,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778621461] [2023-08-03 16:04:05,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 16:04:05,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:05,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:05,590 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) [2023-08-03 16:04:05,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 16:04:05,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 16:04:05,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 16:04:05,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 16:04:05,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:05,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:04:05,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778621461] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:05,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:04:05,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2023-08-03 16:04:05,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285106985] [2023-08-03 16:04:05,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:05,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 16:04:05,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:05,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 16:04:05,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-03 16:04:05,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 302 [2023-08-03 16:04:05,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 69 transitions, 549 flow. Second operand has 7 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 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) [2023-08-03 16:04:05,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:05,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 302 [2023-08-03 16:04:05,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:05,940 INFO L124 PetriNetUnfolderBase]: 153/423 cut-off events. [2023-08-03 16:04:05,941 INFO L125 PetriNetUnfolderBase]: For 1040/1040 co-relation queries the response was YES. [2023-08-03 16:04:05,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1427 conditions, 423 events. 153/423 cut-off events. For 1040/1040 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1672 event pairs, 68 based on Foata normal form. 16/439 useless extension candidates. Maximal degree in co-relation 1311. Up to 164 conditions per place. [2023-08-03 16:04:05,944 INFO L140 encePairwiseOnDemand]: 291/302 looper letters, 71 selfloop transitions, 26 changer transitions 5/107 dead transitions. [2023-08-03 16:04:05,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 107 transitions, 979 flow [2023-08-03 16:04:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 16:04:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 16:04:05,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1167 transitions. [2023-08-03 16:04:05,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42935982339955847 [2023-08-03 16:04:05,948 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1167 transitions. [2023-08-03 16:04:05,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1167 transitions. [2023-08-03 16:04:05,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:05,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1167 transitions. [2023-08-03 16:04:05,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 129.66666666666666) internal successors, (1167), 9 states have internal predecessors, (1167), 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) [2023-08-03 16:04:05,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 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) [2023-08-03 16:04:05,954 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 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) [2023-08-03 16:04:05,955 INFO L175 Difference]: Start difference. First operand has 63 places, 69 transitions, 549 flow. Second operand 9 states and 1167 transitions. [2023-08-03 16:04:05,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 107 transitions, 979 flow [2023-08-03 16:04:05,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 107 transitions, 979 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:04:05,960 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 809 flow [2023-08-03 16:04:05,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=809, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2023-08-03 16:04:05,962 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2023-08-03 16:04:05,962 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 809 flow [2023-08-03 16:04:05,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 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) [2023-08-03 16:04:05,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:05,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:05,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:06,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:06,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:06,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:06,172 INFO L85 PathProgramCache]: Analyzing trace with hash -851555734, now seen corresponding path program 1 times [2023-08-03 16:04:06,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:06,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849639948] [2023-08-03 16:04:06,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:06,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:06,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:06,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:06,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849639948] [2023-08-03 16:04:06,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849639948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:06,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:06,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 16:04:06,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543893374] [2023-08-03 16:04:06,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:06,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:04:06,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:06,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:04:06,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:04:06,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 302 [2023-08-03 16:04:06,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 809 flow. Second operand has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 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) [2023-08-03 16:04:06,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:06,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 302 [2023-08-03 16:04:06,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:06,462 INFO L124 PetriNetUnfolderBase]: 175/471 cut-off events. [2023-08-03 16:04:06,462 INFO L125 PetriNetUnfolderBase]: For 1782/1782 co-relation queries the response was YES. [2023-08-03 16:04:06,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1743 conditions, 471 events. 175/471 cut-off events. For 1782/1782 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1944 event pairs, 72 based on Foata normal form. 8/479 useless extension candidates. Maximal degree in co-relation 1615. Up to 190 conditions per place. [2023-08-03 16:04:06,465 INFO L140 encePairwiseOnDemand]: 290/302 looper letters, 49 selfloop transitions, 46 changer transitions 7/110 dead transitions. [2023-08-03 16:04:06,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 110 transitions, 1179 flow [2023-08-03 16:04:06,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 16:04:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 16:04:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 793 transitions. [2023-08-03 16:04:06,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43763796909492275 [2023-08-03 16:04:06,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 793 transitions. [2023-08-03 16:04:06,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 793 transitions. [2023-08-03 16:04:06,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:06,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 793 transitions. [2023-08-03 16:04:06,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.16666666666666) internal successors, (793), 6 states have internal predecessors, (793), 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) [2023-08-03 16:04:06,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 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) [2023-08-03 16:04:06,473 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 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) [2023-08-03 16:04:06,473 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 809 flow. Second operand 6 states and 793 transitions. [2023-08-03 16:04:06,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 110 transitions, 1179 flow [2023-08-03 16:04:06,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 110 transitions, 1159 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-03 16:04:06,479 INFO L231 Difference]: Finished difference. Result has 77 places, 90 transitions, 1009 flow [2023-08-03 16:04:06,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1009, PETRI_PLACES=77, PETRI_TRANSITIONS=90} [2023-08-03 16:04:06,480 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2023-08-03 16:04:06,480 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 90 transitions, 1009 flow [2023-08-03 16:04:06,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 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) [2023-08-03 16:04:06,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:06,482 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:06,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 16:04:06,483 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:06,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:06,483 INFO L85 PathProgramCache]: Analyzing trace with hash -421460787, now seen corresponding path program 1 times [2023-08-03 16:04:06,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:06,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972363602] [2023-08-03 16:04:06,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:06,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:06,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:06,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972363602] [2023-08-03 16:04:06,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972363602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:06,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:06,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 16:04:06,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835344350] [2023-08-03 16:04:06,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:06,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:04:06,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:04:06,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:04:06,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 302 [2023-08-03 16:04:06,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 90 transitions, 1009 flow. Second operand has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 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) [2023-08-03 16:04:06,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:06,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 302 [2023-08-03 16:04:06,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:06,744 INFO L124 PetriNetUnfolderBase]: 189/503 cut-off events. [2023-08-03 16:04:06,744 INFO L125 PetriNetUnfolderBase]: For 2637/2637 co-relation queries the response was YES. [2023-08-03 16:04:06,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 503 events. 189/503 cut-off events. For 2637/2637 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2105 event pairs, 76 based on Foata normal form. 8/511 useless extension candidates. Maximal degree in co-relation 1880. Up to 200 conditions per place. [2023-08-03 16:04:06,747 INFO L140 encePairwiseOnDemand]: 290/302 looper letters, 47 selfloop transitions, 52 changer transitions 10/117 dead transitions. [2023-08-03 16:04:06,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 1418 flow [2023-08-03 16:04:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 16:04:06,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 16:04:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 793 transitions. [2023-08-03 16:04:06,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43763796909492275 [2023-08-03 16:04:06,750 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 793 transitions. [2023-08-03 16:04:06,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 793 transitions. [2023-08-03 16:04:06,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:06,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 793 transitions. [2023-08-03 16:04:06,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.16666666666666) internal successors, (793), 6 states have internal predecessors, (793), 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) [2023-08-03 16:04:06,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 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) [2023-08-03 16:04:06,755 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 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) [2023-08-03 16:04:06,755 INFO L175 Difference]: Start difference. First operand has 77 places, 90 transitions, 1009 flow. Second operand 6 states and 793 transitions. [2023-08-03 16:04:06,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 1418 flow [2023-08-03 16:04:06,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 1338 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-03 16:04:06,762 INFO L231 Difference]: Finished difference. Result has 80 places, 97 transitions, 1178 flow [2023-08-03 16:04:06,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1178, PETRI_PLACES=80, PETRI_TRANSITIONS=97} [2023-08-03 16:04:06,763 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2023-08-03 16:04:06,763 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 97 transitions, 1178 flow [2023-08-03 16:04:06,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 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) [2023-08-03 16:04:06,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:06,764 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:06,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 16:04:06,764 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:06,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:06,764 INFO L85 PathProgramCache]: Analyzing trace with hash 273996226, now seen corresponding path program 2 times [2023-08-03 16:04:06,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:06,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774930309] [2023-08-03 16:04:06,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:06,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:06,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:06,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774930309] [2023-08-03 16:04:06,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774930309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:06,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:06,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 16:04:06,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809038413] [2023-08-03 16:04:06,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:06,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:04:06,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:06,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:04:06,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:04:06,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 302 [2023-08-03 16:04:06,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 97 transitions, 1178 flow. Second operand has 6 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 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) [2023-08-03 16:04:06,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:06,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 302 [2023-08-03 16:04:06,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:07,048 INFO L124 PetriNetUnfolderBase]: 187/497 cut-off events. [2023-08-03 16:04:07,048 INFO L125 PetriNetUnfolderBase]: For 3094/3094 co-relation queries the response was YES. [2023-08-03 16:04:07,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 497 events. 187/497 cut-off events. For 3094/3094 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2026 event pairs, 83 based on Foata normal form. 8/505 useless extension candidates. Maximal degree in co-relation 1929. Up to 275 conditions per place. [2023-08-03 16:04:07,051 INFO L140 encePairwiseOnDemand]: 290/302 looper letters, 68 selfloop transitions, 38 changer transitions 5/115 dead transitions. [2023-08-03 16:04:07,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 115 transitions, 1509 flow [2023-08-03 16:04:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 16:04:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 16:04:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 890 transitions. [2023-08-03 16:04:07,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4210028382213813 [2023-08-03 16:04:07,055 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 890 transitions. [2023-08-03 16:04:07,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 890 transitions. [2023-08-03 16:04:07,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:07,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 890 transitions. [2023-08-03 16:04:07,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 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) [2023-08-03 16:04:07,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 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) [2023-08-03 16:04:07,061 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 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) [2023-08-03 16:04:07,061 INFO L175 Difference]: Start difference. First operand has 80 places, 97 transitions, 1178 flow. Second operand 7 states and 890 transitions. [2023-08-03 16:04:07,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 115 transitions, 1509 flow [2023-08-03 16:04:07,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 115 transitions, 1474 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:07,071 INFO L231 Difference]: Finished difference. Result has 86 places, 101 transitions, 1338 flow [2023-08-03 16:04:07,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1338, PETRI_PLACES=86, PETRI_TRANSITIONS=101} [2023-08-03 16:04:07,071 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 43 predicate places. [2023-08-03 16:04:07,072 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 101 transitions, 1338 flow [2023-08-03 16:04:07,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 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) [2023-08-03 16:04:07,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:07,072 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:07,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 16:04:07,072 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:07,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:07,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1416796467, now seen corresponding path program 2 times [2023-08-03 16:04:07,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:07,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623827412] [2023-08-03 16:04:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:07,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:07,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:07,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623827412] [2023-08-03 16:04:07,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623827412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:07,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:07,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 16:04:07,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320416459] [2023-08-03 16:04:07,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:07,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:04:07,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:07,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:04:07,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:04:07,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 302 [2023-08-03 16:04:07,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 101 transitions, 1338 flow. Second operand has 6 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 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) [2023-08-03 16:04:07,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:07,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 302 [2023-08-03 16:04:07,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:07,414 INFO L124 PetriNetUnfolderBase]: 178/474 cut-off events. [2023-08-03 16:04:07,414 INFO L125 PetriNetUnfolderBase]: For 3721/3721 co-relation queries the response was YES. [2023-08-03 16:04:07,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 474 events. 178/474 cut-off events. For 3721/3721 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1904 event pairs, 76 based on Foata normal form. 8/482 useless extension candidates. Maximal degree in co-relation 1937. Up to 275 conditions per place. [2023-08-03 16:04:07,416 INFO L140 encePairwiseOnDemand]: 290/302 looper letters, 0 selfloop transitions, 0 changer transitions 110/110 dead transitions. [2023-08-03 16:04:07,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 1555 flow [2023-08-03 16:04:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 16:04:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 16:04:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 886 transitions. [2023-08-03 16:04:07,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911069063386946 [2023-08-03 16:04:07,419 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 886 transitions. [2023-08-03 16:04:07,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 886 transitions. [2023-08-03 16:04:07,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:07,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 886 transitions. [2023-08-03 16:04:07,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2023-08-03 16:04:07,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 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) [2023-08-03 16:04:07,425 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 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) [2023-08-03 16:04:07,425 INFO L175 Difference]: Start difference. First operand has 86 places, 101 transitions, 1338 flow. Second operand 7 states and 886 transitions. [2023-08-03 16:04:07,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 1555 flow [2023-08-03 16:04:07,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 110 transitions, 1542 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:07,433 INFO L231 Difference]: Finished difference. Result has 89 places, 0 transitions, 0 flow [2023-08-03 16:04:07,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=89, PETRI_TRANSITIONS=0} [2023-08-03 16:04:07,434 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2023-08-03 16:04:07,434 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 0 transitions, 0 flow [2023-08-03 16:04:07,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 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) [2023-08-03 16:04:07,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-03 16:04:07,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 16:04:07,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 16:04:07,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-08-03 16:04:07,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-08-03 16:04:07,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-03 16:04:07,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 16:04:07,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 16:04:07,436 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:07,439 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:04:07,439 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:04:07,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:04:07 BasicIcfg [2023-08-03 16:04:07,442 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:04:07,442 INFO L158 Benchmark]: Toolchain (without parser) took 11699.12ms. Allocated memory was 411.0MB in the beginning and 494.9MB in the end (delta: 83.9MB). Free memory was 364.2MB in the beginning and 430.6MB in the end (delta: -66.4MB). Peak memory consumption was 19.2MB. Max. memory is 16.0GB. [2023-08-03 16:04:07,442 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 335.5MB. Free memory was 292.0MB in the beginning and 291.8MB in the end (delta: 154.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:04:07,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.56ms. Allocated memory is still 411.0MB. Free memory was 364.2MB in the beginning and 344.2MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 16:04:07,442 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.54ms. Allocated memory is still 411.0MB. Free memory was 344.2MB in the beginning and 342.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:04:07,443 INFO L158 Benchmark]: Boogie Preprocessor took 37.09ms. Allocated memory is still 411.0MB. Free memory was 342.1MB in the beginning and 340.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:04:07,443 INFO L158 Benchmark]: RCFGBuilder took 319.48ms. Allocated memory is still 411.0MB. Free memory was 340.7MB in the beginning and 326.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 16:04:07,443 INFO L158 Benchmark]: TraceAbstraction took 10891.79ms. Allocated memory was 411.0MB in the beginning and 494.9MB in the end (delta: 83.9MB). Free memory was 325.3MB in the beginning and 430.6MB in the end (delta: -105.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:04:07,444 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 335.5MB. Free memory was 292.0MB in the beginning and 291.8MB in the end (delta: 154.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 408.56ms. Allocated memory is still 411.0MB. Free memory was 364.2MB in the beginning and 344.2MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.54ms. Allocated memory is still 411.0MB. Free memory was 344.2MB in the beginning and 342.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.09ms. Allocated memory is still 411.0MB. Free memory was 342.1MB in the beginning and 340.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 319.48ms. Allocated memory is still 411.0MB. Free memory was 340.7MB in the beginning and 326.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 10891.79ms. Allocated memory was 411.0MB in the beginning and 494.9MB in the end (delta: 83.9MB). Free memory was 325.3MB in the beginning and 430.6MB in the end (delta: -105.3MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 104 PlacesBefore, 27 PlacesAfterwards, 112 TransitionsBefore, 30 TransitionsAfterwards, 3344 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 5 ChoiceCompositions, 103 TotalNumberOfCompositions, 5662 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4606, independent: 4437, independent conditional: 0, independent unconditional: 4437, dependent: 169, dependent conditional: 0, dependent unconditional: 169, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1840, independent: 1805, independent conditional: 0, independent unconditional: 1805, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4606, independent: 2632, independent conditional: 0, independent unconditional: 2632, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 1840, unknown conditional: 0, unknown unconditional: 1840] , Statistics on independence cache: Total cache size (in pairs): 155, Positive cache size: 139, Positive conditional cache size: 0, Positive unconditional cache size: 139, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 144 PlacesBefore, 43 PlacesAfterwards, 157 TransitionsBefore, 48 TransitionsAfterwards, 10648 CoEnabledTransitionPairs, 7 FixpointIterations, 28 TrivialSequentialCompositions, 71 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 38 ConcurrentYvCompositions, 8 ChoiceCompositions, 145 TotalNumberOfCompositions, 21022 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10523, independent: 10212, independent conditional: 0, independent unconditional: 10212, dependent: 311, dependent conditional: 0, dependent unconditional: 311, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5594, independent: 5530, independent conditional: 0, independent unconditional: 5530, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10523, independent: 4682, independent conditional: 0, independent unconditional: 4682, dependent: 247, dependent conditional: 0, dependent unconditional: 247, unknown: 5594, unknown conditional: 0, unknown unconditional: 5594] , Statistics on independence cache: Total cache size (in pairs): 253, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 140 locations, 5 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: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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 with 2 thread instances CFG has 4 procedures, 178 locations, 7 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: 8.1s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 980 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 704 mSDsluCounter, 223 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 163 mSDsCounter, 134 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2026 IncrementalHoareTripleChecker+Invalid, 2160 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 134 mSolverCounterUnsat, 60 mSDtfsCounter, 2026 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1338occurred in iteration=11, InterpolantAutomatonStates: 66, 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, 1.1s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 670 SizeOfPredicates, 4 NumberOfNonLiveVariables, 418 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 95/107 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 16:04:07,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...