/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/added_bound_to_unbounded/pthread-ext_09_fmaxsym_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:47:55,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:47:55,242 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:47:55,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:47:55,247 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:47:55,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:47:55,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:47:55,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:47:55,281 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:47:55,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:47:55,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:47:55,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:47:55,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:47:55,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:47:55,287 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:47:55,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:47:55,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:47:55,288 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:47:55,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:47:55,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:47:55,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:47:55,289 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:47:55,289 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:47:55,289 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:47:55,290 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:47:55,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:47:55,291 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:47:55,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:47:55,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:47:55,292 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:47:55,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:47:55,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:47:55,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:47:55,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:47:55,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:47:55,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:47:55,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:47:55,294 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:47:55,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:47:55,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:47:55,295 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:47:55,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:47:55,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:47:55,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:47:55,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:47:55,501 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:47:55,502 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:47:55,503 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_09_fmaxsym_bound2.i [2023-08-03 15:47:56,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:47:56,847 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:47:56,848 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_09_fmaxsym_bound2.i [2023-08-03 15:47:56,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a96e8a9/832834926b9148df974920f3d92a5284/FLAGa9b10c6df [2023-08-03 15:47:56,869 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a96e8a9/832834926b9148df974920f3d92a5284 [2023-08-03 15:47:56,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:47:56,872 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:47:56,873 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:47:56,873 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:47:56,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:47:56,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:47:56" (1/1) ... [2023-08-03 15:47:56,877 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3081b47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:56, skipping insertion in model container [2023-08-03 15:47:56,877 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:47:56" (1/1) ... [2023-08-03 15:47:56,914 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:47:57,193 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_09_fmaxsym_bound2.i[30422,30435] [2023-08-03 15:47:57,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:47:57,213 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:47:57,240 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-03 15:47:57,244 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-03 15:47:57,259 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_09_fmaxsym_bound2.i[30422,30435] [2023-08-03 15:47:57,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:47:57,302 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:47:57,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:57 WrapperNode [2023-08-03 15:47:57,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:47:57,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:47:57,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:47:57,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:47:57,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:57" (1/1) ... [2023-08-03 15:47:57,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:57" (1/1) ... [2023-08-03 15:47:57,342 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82 [2023-08-03 15:47:57,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:47:57,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:47:57,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:47:57,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:47:57,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:57" (1/1) ... [2023-08-03 15:47:57,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:57" (1/1) ... [2023-08-03 15:47:57,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:57" (1/1) ... [2023-08-03 15:47:57,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:57" (1/1) ... [2023-08-03 15:47:57,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:57" (1/1) ... [2023-08-03 15:47:57,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:57" (1/1) ... [2023-08-03 15:47:57,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:57" (1/1) ... [2023-08-03 15:47:57,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:57" (1/1) ... [2023-08-03 15:47:57,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:47:57,373 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:47:57,374 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:47:57,374 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:47:57,374 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:57" (1/1) ... [2023-08-03 15:47:57,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:47:57,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:47:57,406 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 15:47:57,415 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 15:47:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:47:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 15:47:57,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 15:47:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:47:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:47:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:47:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:47:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:47:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:47:57,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:47:57,445 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 15:47:57,555 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:47:57,560 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:47:57,738 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:47:57,761 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:47:57,762 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 15:47:57,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:47:57 BoogieIcfgContainer [2023-08-03 15:47:57,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:47:57,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:47:57,766 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:47:57,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:47:57,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:47:56" (1/3) ... [2023-08-03 15:47:57,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17491b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:47:57, skipping insertion in model container [2023-08-03 15:47:57,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:57" (2/3) ... [2023-08-03 15:47:57,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17491b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:47:57, skipping insertion in model container [2023-08-03 15:47:57,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:47:57" (3/3) ... [2023-08-03 15:47:57,770 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_09_fmaxsym_bound2.i [2023-08-03 15:47:57,777 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:47:57,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:47:57,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:47:57,785 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:47:57,826 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:47:57,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 76 transitions, 157 flow [2023-08-03 15:47:57,887 INFO L124 PetriNetUnfolderBase]: 7/86 cut-off events. [2023-08-03 15:47:57,887 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:47:57,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 86 events. 7/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2023-08-03 15:47:57,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 76 transitions, 157 flow [2023-08-03 15:47:57,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 76 transitions, 157 flow [2023-08-03 15:47:57,898 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:47:57,906 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 76 transitions, 157 flow [2023-08-03 15:47:57,908 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 76 transitions, 157 flow [2023-08-03 15:47:57,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 76 transitions, 157 flow [2023-08-03 15:47:57,928 INFO L124 PetriNetUnfolderBase]: 7/86 cut-off events. [2023-08-03 15:47:57,928 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:47:57,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 86 events. 7/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2023-08-03 15:47:57,930 INFO L119 LiptonReduction]: Number of co-enabled transitions 1216 [2023-08-03 15:48:00,732 INFO L134 LiptonReduction]: Checked pairs total: 1020 [2023-08-03 15:48:00,732 INFO L136 LiptonReduction]: Total number of compositions: 82 [2023-08-03 15:48:00,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:48:00,748 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;@4542692b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:48:00,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 15:48:00,752 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:48:00,752 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2023-08-03 15:48:00,752 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:48:00,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:00,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:48:00,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:48:00,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:00,757 INFO L85 PathProgramCache]: Analyzing trace with hash 352955426, now seen corresponding path program 1 times [2023-08-03 15:48:00,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:00,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284101817] [2023-08-03 15:48:00,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:00,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:00,901 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 15:48:00,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:00,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284101817] [2023-08-03 15:48:00,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284101817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:00,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:00,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:48:00,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179018025] [2023-08-03 15:48:00,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:00,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 15:48:00,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:00,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 15:48:00,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 15:48:00,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 158 [2023-08-03 15:48:00,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 10 transitions, 25 flow. Second operand has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 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 15:48:00,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:00,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 158 [2023-08-03 15:48:00,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:00,978 INFO L124 PetriNetUnfolderBase]: 10/27 cut-off events. [2023-08-03 15:48:00,979 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:48:00,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 27 events. 10/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 6 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 42. Up to 26 conditions per place. [2023-08-03 15:48:00,980 INFO L140 encePairwiseOnDemand]: 157/158 looper letters, 7 selfloop transitions, 0 changer transitions 1/9 dead transitions. [2023-08-03 15:48:00,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 9 transitions, 39 flow [2023-08-03 15:48:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 15:48:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 15:48:00,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 145 transitions. [2023-08-03 15:48:00,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4588607594936709 [2023-08-03 15:48:00,995 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 145 transitions. [2023-08-03 15:48:00,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 145 transitions. [2023-08-03 15:48:00,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:00,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 145 transitions. [2023-08-03 15:48:01,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 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 15:48:01,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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 15:48:01,009 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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 15:48:01,010 INFO L175 Difference]: Start difference. First operand has 12 places, 10 transitions, 25 flow. Second operand 2 states and 145 transitions. [2023-08-03 15:48:01,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 9 transitions, 39 flow [2023-08-03 15:48:01,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 9 transitions, 39 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:01,014 INFO L231 Difference]: Finished difference. Result has 12 places, 8 transitions, 21 flow [2023-08-03 15:48:01,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=21, PETRI_PLACES=12, PETRI_TRANSITIONS=8} [2023-08-03 15:48:01,018 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, 0 predicate places. [2023-08-03 15:48:01,019 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 8 transitions, 21 flow [2023-08-03 15:48:01,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 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 15:48:01,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:01,019 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:48:01,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:48:01,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:48:01,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1943299761, now seen corresponding path program 1 times [2023-08-03 15:48:01,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:01,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670679103] [2023-08-03 15:48:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:01,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:48:01,058 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:48:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:48:01,085 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:48:01,085 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:48:01,087 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 15:48:01,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 15:48:01,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 15:48:01,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:48:01,089 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:48:01,090 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:48:01,091 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:48:01,110 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:48:01,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 242 flow [2023-08-03 15:48:01,135 INFO L124 PetriNetUnfolderBase]: 13/140 cut-off events. [2023-08-03 15:48:01,135 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:48:01,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 140 events. 13/140 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 232 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-08-03 15:48:01,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 115 transitions, 242 flow [2023-08-03 15:48:01,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 115 transitions, 242 flow [2023-08-03 15:48:01,138 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:48:01,138 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 115 transitions, 242 flow [2023-08-03 15:48:01,139 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 115 transitions, 242 flow [2023-08-03 15:48:01,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 242 flow [2023-08-03 15:48:01,167 INFO L124 PetriNetUnfolderBase]: 13/140 cut-off events. [2023-08-03 15:48:01,168 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:48:01,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 140 events. 13/140 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 232 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-08-03 15:48:01,174 INFO L119 LiptonReduction]: Number of co-enabled transitions 5396 [2023-08-03 15:48:03,299 INFO L134 LiptonReduction]: Checked pairs total: 9076 [2023-08-03 15:48:03,300 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-03 15:48:03,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:48:03,309 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;@4542692b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:48:03,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:48:03,313 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:48:03,313 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-08-03 15:48:03,313 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:48:03,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:03,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:03,313 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:03,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1687935628, now seen corresponding path program 1 times [2023-08-03 15:48:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:03,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042246839] [2023-08-03 15:48:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:03,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:03,418 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 15:48:03,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:03,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042246839] [2023-08-03 15:48:03,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042246839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:03,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:03,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:48:03,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811833242] [2023-08-03 15:48:03,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:03,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:03,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:03,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:03,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:03,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 223 [2023-08-03 15:48:03,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 15:48:03,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:03,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 223 [2023-08-03 15:48:03,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:03,599 INFO L124 PetriNetUnfolderBase]: 772/1254 cut-off events. [2023-08-03 15:48:03,600 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-03 15:48:03,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2479 conditions, 1254 events. 772/1254 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5556 event pairs, 350 based on Foata normal form. 0/886 useless extension candidates. Maximal degree in co-relation 1567. Up to 762 conditions per place. [2023-08-03 15:48:03,607 INFO L140 encePairwiseOnDemand]: 217/223 looper letters, 35 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2023-08-03 15:48:03,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 185 flow [2023-08-03 15:48:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-08-03 15:48:03,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648729446935725 [2023-08-03 15:48:03,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-08-03 15:48:03,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-08-03 15:48:03,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:03,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-08-03 15:48:03,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 15:48:03,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 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 15:48:03,615 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 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 15:48:03,615 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 68 flow. Second operand 3 states and 311 transitions. [2023-08-03 15:48:03,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 185 flow [2023-08-03 15:48:03,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 183 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:03,617 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 100 flow [2023-08-03 15:48:03,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-08-03 15:48:03,618 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2023-08-03 15:48:03,618 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 100 flow [2023-08-03 15:48:03,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 15:48:03,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:03,618 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:48:03,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:48:03,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:03,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:03,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1391328986, now seen corresponding path program 1 times [2023-08-03 15:48:03,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:03,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696597185] [2023-08-03 15:48:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:03,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:03,732 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 15:48:03,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:03,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696597185] [2023-08-03 15:48:03,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696597185] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:48:03,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688400771] [2023-08-03 15:48:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:03,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:03,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:48:03,741 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 15:48:03,754 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 15:48:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:03,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:48:03,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:48:03,855 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 15:48:03,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:48:03,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688400771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:03,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:48:03,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:48:03,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787270590] [2023-08-03 15:48:03,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:03,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:48:03,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:03,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:48:03,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:48:03,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 223 [2023-08-03 15:48:03,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 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 15:48:03,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:03,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 223 [2023-08-03 15:48:03,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:03,993 INFO L124 PetriNetUnfolderBase]: 440/745 cut-off events. [2023-08-03 15:48:03,993 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2023-08-03 15:48:03,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 745 events. 440/745 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2992 event pairs, 18 based on Foata normal form. 0/658 useless extension candidates. Maximal degree in co-relation 667. Up to 492 conditions per place. [2023-08-03 15:48:03,998 INFO L140 encePairwiseOnDemand]: 219/223 looper letters, 44 selfloop transitions, 4 changer transitions 1/57 dead transitions. [2023-08-03 15:48:03,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 57 transitions, 270 flow [2023-08-03 15:48:03,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:03,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 520 transitions. [2023-08-03 15:48:04,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663677130044843 [2023-08-03 15:48:04,001 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 520 transitions. [2023-08-03 15:48:04,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 520 transitions. [2023-08-03 15:48:04,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:04,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 520 transitions. [2023-08-03 15:48:04,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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 15:48:04,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 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 15:48:04,008 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 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 15:48:04,009 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 100 flow. Second operand 5 states and 520 transitions. [2023-08-03 15:48:04,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 57 transitions, 270 flow [2023-08-03 15:48:04,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 57 transitions, 253 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 15:48:04,013 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 110 flow [2023-08-03 15:48:04,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-08-03 15:48:04,016 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-08-03 15:48:04,017 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 110 flow [2023-08-03 15:48:04,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 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 15:48:04,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:04,018 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:04,027 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 15:48:04,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:04,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:04,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:04,225 INFO L85 PathProgramCache]: Analyzing trace with hash 71632173, now seen corresponding path program 1 times [2023-08-03 15:48:04,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:04,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941838127] [2023-08-03 15:48:04,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:04,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:48:04,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:04,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941838127] [2023-08-03 15:48:04,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941838127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:04,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:04,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:48:04,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244669527] [2023-08-03 15:48:04,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:04,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:04,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:04,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:04,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:04,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 223 [2023-08-03 15:48:04,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 15:48:04,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:04,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 223 [2023-08-03 15:48:04,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:04,414 INFO L124 PetriNetUnfolderBase]: 805/1274 cut-off events. [2023-08-03 15:48:04,414 INFO L125 PetriNetUnfolderBase]: For 1031/1031 co-relation queries the response was YES. [2023-08-03 15:48:04,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3415 conditions, 1274 events. 805/1274 cut-off events. For 1031/1031 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5555 event pairs, 335 based on Foata normal form. 0/1134 useless extension candidates. Maximal degree in co-relation 2101. Up to 711 conditions per place. [2023-08-03 15:48:04,422 INFO L140 encePairwiseOnDemand]: 217/223 looper letters, 37 selfloop transitions, 6 changer transitions 3/49 dead transitions. [2023-08-03 15:48:04,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 256 flow [2023-08-03 15:48:04,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:04,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-08-03 15:48:04,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4633781763826607 [2023-08-03 15:48:04,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-08-03 15:48:04,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-08-03 15:48:04,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:04,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-08-03 15:48:04,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 15:48:04,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 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 15:48:04,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 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 15:48:04,427 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 110 flow. Second operand 3 states and 310 transitions. [2023-08-03 15:48:04,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 256 flow [2023-08-03 15:48:04,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 49 transitions, 255 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:48:04,430 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 143 flow [2023-08-03 15:48:04,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-08-03 15:48:04,431 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-08-03 15:48:04,431 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 143 flow [2023-08-03 15:48:04,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 15:48:04,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:04,432 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:04,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 15:48:04,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:04,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:04,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1723812925, now seen corresponding path program 1 times [2023-08-03 15:48:04,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:04,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067397659] [2023-08-03 15:48:04,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:04,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:48:04,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:04,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067397659] [2023-08-03 15:48:04,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067397659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:04,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:04,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:48:04,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359014] [2023-08-03 15:48:04,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:04,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:48:04,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:04,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:48:04,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:48:04,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 223 [2023-08-03 15:48:04,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 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 15:48:04,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:04,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 223 [2023-08-03 15:48:04,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:04,912 INFO L124 PetriNetUnfolderBase]: 1281/2015 cut-off events. [2023-08-03 15:48:04,913 INFO L125 PetriNetUnfolderBase]: For 2228/2228 co-relation queries the response was YES. [2023-08-03 15:48:04,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6102 conditions, 2015 events. 1281/2015 cut-off events. For 2228/2228 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9245 event pairs, 418 based on Foata normal form. 0/1889 useless extension candidates. Maximal degree in co-relation 4829. Up to 904 conditions per place. [2023-08-03 15:48:04,926 INFO L140 encePairwiseOnDemand]: 214/223 looper letters, 64 selfloop transitions, 16 changer transitions 6/87 dead transitions. [2023-08-03 15:48:04,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 87 transitions, 531 flow [2023-08-03 15:48:04,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:48:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:48:04,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 576 transitions. [2023-08-03 15:48:04,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4304932735426009 [2023-08-03 15:48:04,928 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 576 transitions. [2023-08-03 15:48:04,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 576 transitions. [2023-08-03 15:48:04,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:04,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 576 transitions. [2023-08-03 15:48:04,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 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 15:48:04,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 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 15:48:04,933 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 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 15:48:04,934 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 143 flow. Second operand 6 states and 576 transitions. [2023-08-03 15:48:04,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 87 transitions, 531 flow [2023-08-03 15:48:04,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 87 transitions, 501 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:48:04,939 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 255 flow [2023-08-03 15:48:04,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-08-03 15:48:04,940 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-08-03 15:48:04,940 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 255 flow [2023-08-03 15:48:04,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 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 15:48:04,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:04,941 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:04,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:48:04,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:04,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:04,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1404089337, now seen corresponding path program 2 times [2023-08-03 15:48:04,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:04,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771306274] [2023-08-03 15:48:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:04,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:05,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:48:05,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:05,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771306274] [2023-08-03 15:48:05,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771306274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:05,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:05,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:48:05,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275909479] [2023-08-03 15:48:05,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:05,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:48:05,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:05,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:48:05,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:48:05,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 223 [2023-08-03 15:48:05,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 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 15:48:05,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:05,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 223 [2023-08-03 15:48:05,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:05,403 INFO L124 PetriNetUnfolderBase]: 1874/2962 cut-off events. [2023-08-03 15:48:05,403 INFO L125 PetriNetUnfolderBase]: For 5191/5191 co-relation queries the response was YES. [2023-08-03 15:48:05,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9944 conditions, 2962 events. 1874/2962 cut-off events. For 5191/5191 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 14867 event pairs, 896 based on Foata normal form. 36/2845 useless extension candidates. Maximal degree in co-relation 8626. Up to 1946 conditions per place. [2023-08-03 15:48:05,422 INFO L140 encePairwiseOnDemand]: 214/223 looper letters, 74 selfloop transitions, 37 changer transitions 5/117 dead transitions. [2023-08-03 15:48:05,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 117 transitions, 880 flow [2023-08-03 15:48:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:48:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:48:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 661 transitions. [2023-08-03 15:48:05,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42344650864830236 [2023-08-03 15:48:05,425 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 661 transitions. [2023-08-03 15:48:05,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 661 transitions. [2023-08-03 15:48:05,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:05,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 661 transitions. [2023-08-03 15:48:05,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.42857142857143) internal successors, (661), 7 states have internal predecessors, (661), 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 15:48:05,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 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 15:48:05,432 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 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 15:48:05,436 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 255 flow. Second operand 7 states and 661 transitions. [2023-08-03 15:48:05,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 117 transitions, 880 flow [2023-08-03 15:48:05,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 117 transitions, 880 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:05,447 INFO L231 Difference]: Finished difference. Result has 57 places, 77 transitions, 653 flow [2023-08-03 15:48:05,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=57, PETRI_TRANSITIONS=77} [2023-08-03 15:48:05,449 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2023-08-03 15:48:05,449 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 77 transitions, 653 flow [2023-08-03 15:48:05,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 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 15:48:05,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:05,449 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:05,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:48:05,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:05,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:05,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1581383174, now seen corresponding path program 1 times [2023-08-03 15:48:05,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:05,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874055782] [2023-08-03 15:48:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:05,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:48:05,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:05,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874055782] [2023-08-03 15:48:05,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874055782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:05,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:05,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:48:05,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993123289] [2023-08-03 15:48:05,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:05,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:48:05,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:05,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:48:05,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:48:05,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 223 [2023-08-03 15:48:05,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 77 transitions, 653 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 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 15:48:05,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:05,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 223 [2023-08-03 15:48:05,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:06,085 INFO L124 PetriNetUnfolderBase]: 2428/3852 cut-off events. [2023-08-03 15:48:06,086 INFO L125 PetriNetUnfolderBase]: For 9756/9756 co-relation queries the response was YES. [2023-08-03 15:48:06,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14332 conditions, 3852 events. 2428/3852 cut-off events. For 9756/9756 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 20756 event pairs, 1316 based on Foata normal form. 33/3654 useless extension candidates. Maximal degree in co-relation 13128. Up to 2930 conditions per place. [2023-08-03 15:48:06,113 INFO L140 encePairwiseOnDemand]: 214/223 looper letters, 115 selfloop transitions, 22 changer transitions 5/143 dead transitions. [2023-08-03 15:48:06,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 143 transitions, 1283 flow [2023-08-03 15:48:06,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:48:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:48:06,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 666 transitions. [2023-08-03 15:48:06,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42664958360025623 [2023-08-03 15:48:06,116 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 666 transitions. [2023-08-03 15:48:06,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 666 transitions. [2023-08-03 15:48:06,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:06,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 666 transitions. [2023-08-03 15:48:06,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.14285714285714) internal successors, (666), 7 states have internal predecessors, (666), 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 15:48:06,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 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 15:48:06,120 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 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 15:48:06,120 INFO L175 Difference]: Start difference. First operand has 57 places, 77 transitions, 653 flow. Second operand 7 states and 666 transitions. [2023-08-03 15:48:06,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 143 transitions, 1283 flow [2023-08-03 15:48:06,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 143 transitions, 1279 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:06,144 INFO L231 Difference]: Finished difference. Result has 67 places, 99 transitions, 919 flow [2023-08-03 15:48:06,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=919, PETRI_PLACES=67, PETRI_TRANSITIONS=99} [2023-08-03 15:48:06,145 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2023-08-03 15:48:06,146 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 99 transitions, 919 flow [2023-08-03 15:48:06,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 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 15:48:06,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:06,146 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:06,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 15:48:06,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:06,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:06,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1403196552, now seen corresponding path program 2 times [2023-08-03 15:48:06,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:06,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36654787] [2023-08-03 15:48:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:06,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:48:06,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:06,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36654787] [2023-08-03 15:48:06,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36654787] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:06,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:06,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:48:06,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077915291] [2023-08-03 15:48:06,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:06,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:48:06,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:06,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:48:06,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:48:06,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 223 [2023-08-03 15:48:06,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 99 transitions, 919 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 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 15:48:06,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:06,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 223 [2023-08-03 15:48:06,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:06,799 INFO L124 PetriNetUnfolderBase]: 3117/4940 cut-off events. [2023-08-03 15:48:06,799 INFO L125 PetriNetUnfolderBase]: For 15562/15562 co-relation queries the response was YES. [2023-08-03 15:48:06,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19538 conditions, 4940 events. 3117/4940 cut-off events. For 15562/15562 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 28172 event pairs, 784 based on Foata normal form. 33/4631 useless extension candidates. Maximal degree in co-relation 18385. Up to 2032 conditions per place. [2023-08-03 15:48:06,850 INFO L140 encePairwiseOnDemand]: 214/223 looper letters, 116 selfloop transitions, 51 changer transitions 6/174 dead transitions. [2023-08-03 15:48:06,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 174 transitions, 1800 flow [2023-08-03 15:48:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:48:06,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:48:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 577 transitions. [2023-08-03 15:48:06,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312406576980568 [2023-08-03 15:48:06,853 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 577 transitions. [2023-08-03 15:48:06,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 577 transitions. [2023-08-03 15:48:06,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:06,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 577 transitions. [2023-08-03 15:48:06,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 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 15:48:06,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 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 15:48:06,857 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 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 15:48:06,857 INFO L175 Difference]: Start difference. First operand has 67 places, 99 transitions, 919 flow. Second operand 6 states and 577 transitions. [2023-08-03 15:48:06,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 174 transitions, 1800 flow [2023-08-03 15:48:06,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 174 transitions, 1750 flow, removed 25 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:06,962 INFO L231 Difference]: Finished difference. Result has 77 places, 124 transitions, 1348 flow [2023-08-03 15:48:06,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1348, PETRI_PLACES=77, PETRI_TRANSITIONS=124} [2023-08-03 15:48:06,963 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2023-08-03 15:48:06,963 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 124 transitions, 1348 flow [2023-08-03 15:48:06,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 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 15:48:06,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:06,964 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:06,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 15:48:06,964 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:06,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:06,964 INFO L85 PathProgramCache]: Analyzing trace with hash 474799845, now seen corresponding path program 1 times [2023-08-03 15:48:06,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:06,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844903704] [2023-08-03 15:48:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:06,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:48:07,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:07,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844903704] [2023-08-03 15:48:07,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844903704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:07,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:07,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:07,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042453566] [2023-08-03 15:48:07,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:07,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:07,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:07,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:07,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:07,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 223 [2023-08-03 15:48:07,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 124 transitions, 1348 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 15:48:07,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:07,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 223 [2023-08-03 15:48:07,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:07,316 INFO L124 PetriNetUnfolderBase]: 1272/2219 cut-off events. [2023-08-03 15:48:07,316 INFO L125 PetriNetUnfolderBase]: For 8641/8650 co-relation queries the response was YES. [2023-08-03 15:48:07,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8977 conditions, 2219 events. 1272/2219 cut-off events. For 8641/8650 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 12232 event pairs, 692 based on Foata normal form. 51/2090 useless extension candidates. Maximal degree in co-relation 8829. Up to 1457 conditions per place. [2023-08-03 15:48:07,328 INFO L140 encePairwiseOnDemand]: 219/223 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2023-08-03 15:48:07,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 93 transitions, 972 flow [2023-08-03 15:48:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-03 15:48:07,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49177877428998507 [2023-08-03 15:48:07,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-03 15:48:07,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-03 15:48:07,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:07,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-03 15:48:07,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 15:48:07,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 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 15:48:07,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 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 15:48:07,333 INFO L175 Difference]: Start difference. First operand has 77 places, 124 transitions, 1348 flow. Second operand 3 states and 329 transitions. [2023-08-03 15:48:07,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 93 transitions, 972 flow [2023-08-03 15:48:07,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 847 flow, removed 30 selfloop flow, removed 8 redundant places. [2023-08-03 15:48:07,365 INFO L231 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2023-08-03 15:48:07,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2023-08-03 15:48:07,366 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2023-08-03 15:48:07,367 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2023-08-03 15:48:07,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 15:48:07,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 15:48:07,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 15:48:07,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 15:48:07,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:48:07,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 15:48:07,368 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-08-03 15:48:07,371 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:48:07,371 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:48:07,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:48:07 BasicIcfg [2023-08-03 15:48:07,377 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:48:07,377 INFO L158 Benchmark]: Toolchain (without parser) took 10505.53ms. Allocated memory was 645.9MB in the beginning and 775.9MB in the end (delta: 130.0MB). Free memory was 597.3MB in the beginning and 622.2MB in the end (delta: -24.9MB). Peak memory consumption was 445.7MB. Max. memory is 16.0GB. [2023-08-03 15:48:07,378 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 364.9MB. Free memory is still 317.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:48:07,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.52ms. Allocated memory is still 645.9MB. Free memory was 597.3MB in the beginning and 577.5MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 15:48:07,378 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.74ms. Allocated memory is still 645.9MB. Free memory was 577.5MB in the beginning and 575.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:48:07,378 INFO L158 Benchmark]: Boogie Preprocessor took 29.46ms. Allocated memory is still 645.9MB. Free memory was 575.4MB in the beginning and 573.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:48:07,378 INFO L158 Benchmark]: RCFGBuilder took 390.26ms. Allocated memory is still 645.9MB. Free memory was 573.8MB in the beginning and 558.7MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 15:48:07,379 INFO L158 Benchmark]: TraceAbstraction took 9611.65ms. Allocated memory was 645.9MB in the beginning and 775.9MB in the end (delta: 130.0MB). Free memory was 558.3MB in the beginning and 622.2MB in the end (delta: -63.9MB). Peak memory consumption was 407.9MB. Max. memory is 16.0GB. [2023-08-03 15:48:07,381 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 364.9MB. Free memory is still 317.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 429.52ms. Allocated memory is still 645.9MB. Free memory was 597.3MB in the beginning and 577.5MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.74ms. Allocated memory is still 645.9MB. Free memory was 577.5MB in the beginning and 575.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.46ms. Allocated memory is still 645.9MB. Free memory was 575.4MB in the beginning and 573.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 390.26ms. Allocated memory is still 645.9MB. Free memory was 573.8MB in the beginning and 558.7MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 9611.65ms. Allocated memory was 645.9MB in the beginning and 775.9MB in the end (delta: 130.0MB). Free memory was 558.3MB in the beginning and 622.2MB in the end (delta: -63.9MB). Peak memory consumption was 407.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 254]: Unsoundness Warning unspecified type, defaulting to int C: short [254] - GenericResultAtLocation [Line: 254]: Unsoundness Warning unspecified type, defaulting to int C: short [254] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 73 PlacesBefore, 12 PlacesAfterwards, 76 TransitionsBefore, 10 TransitionsAfterwards, 1216 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 5 ChoiceCompositions, 82 TotalNumberOfCompositions, 1020 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 962, independent: 946, independent conditional: 0, independent unconditional: 946, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 657, independent: 652, independent conditional: 0, independent unconditional: 652, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 962, independent: 294, independent conditional: 0, independent unconditional: 294, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 657, unknown conditional: 0, unknown unconditional: 657] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 109 PlacesBefore, 29 PlacesAfterwards, 115 TransitionsBefore, 28 TransitionsAfterwards, 5396 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 7 ChoiceCompositions, 108 TotalNumberOfCompositions, 9076 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6388, independent: 6201, independent conditional: 0, independent unconditional: 6201, dependent: 187, dependent conditional: 0, dependent unconditional: 187, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3121, independent: 3098, independent conditional: 0, independent unconditional: 3098, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6388, independent: 3103, independent conditional: 0, independent unconditional: 3103, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 3121, unknown conditional: 0, unknown unconditional: 3121] , Statistics on independence cache: Total cache size (in pairs): 130, Positive cache size: 120, Positive conditional cache size: 0, Positive unconditional cache size: 120, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 714]: 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, 105 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 139 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.3s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 449 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 318 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1108 IncrementalHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 64 mSDtfsCounter, 1108 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1348occurred in iteration=7, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 264 SizeOfPredicates, 0 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 23/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 15:48:07,411 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...