/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 INSUFFICIENT_FIRST -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 21:54:37,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:54:37,823 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:54:37,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:54:37,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:54:37,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:54:37,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:54:37,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:54:37,854 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:54:37,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:54:37,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:54:37,858 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:54:37,859 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:54:37,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:54:37,860 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:54:37,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:54:37,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:54:37,861 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:54:37,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:54:37,861 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:54:37,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:54:37,862 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:54:37,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:54:37,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:54:37,863 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:54:37,864 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:54:37,864 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:54:37,865 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:54:37,865 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:54:37,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:54:37,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:54:37,866 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:54:37,866 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:54:37,866 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:54:37,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:54:37,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:54:37,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:54:37,867 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:54:37,867 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:54:37,867 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:54:37,867 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:54:37,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:54:38,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:54:38,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:54:38,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:54:38,112 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:54:38,112 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:54:38,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_09_fmaxsym_bound2.i [2023-08-03 21:54:39,248 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:54:39,450 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:54:39,451 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_09_fmaxsym_bound2.i [2023-08-03 21:54:39,463 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b408ef733/c1d120a3c1ff42a3be5e764001cd545a/FLAGeffb8fe4a [2023-08-03 21:54:39,475 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b408ef733/c1d120a3c1ff42a3be5e764001cd545a [2023-08-03 21:54:39,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:54:39,478 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:54:39,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:54:39,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:54:39,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:54:39,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:54:39" (1/1) ... [2023-08-03 21:54:39,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267f26fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39, skipping insertion in model container [2023-08-03 21:54:39,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:54:39" (1/1) ... [2023-08-03 21:54:39,514 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:54:39,768 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 21:54:39,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:54:39,789 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:54:39,819 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-03 21:54:39,821 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-03 21:54:39,845 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 21:54:39,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:54:39,889 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:54:39,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39 WrapperNode [2023-08-03 21:54:39,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:54:39,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:54:39,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:54:39,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:54:39,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39" (1/1) ... [2023-08-03 21:54:39,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39" (1/1) ... [2023-08-03 21:54:39,947 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82 [2023-08-03 21:54:39,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:54:39,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:54:39,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:54:39,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:54:39,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39" (1/1) ... [2023-08-03 21:54:39,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39" (1/1) ... [2023-08-03 21:54:39,960 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39" (1/1) ... [2023-08-03 21:54:39,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39" (1/1) ... [2023-08-03 21:54:39,978 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39" (1/1) ... [2023-08-03 21:54:39,981 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39" (1/1) ... [2023-08-03 21:54:39,982 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39" (1/1) ... [2023-08-03 21:54:39,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39" (1/1) ... [2023-08-03 21:54:39,985 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:54:39,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:54:39,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:54:39,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:54:39,987 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39" (1/1) ... [2023-08-03 21:54:39,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:54:40,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:54:40,017 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 21:54:40,025 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 21:54:40,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:54:40,050 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 21:54:40,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 21:54:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:54:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:54:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:54:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:54:40,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:54:40,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:54:40,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:54:40,054 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 21:54:40,161 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:54:40,163 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:54:40,301 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:54:40,334 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:54:40,334 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 21:54:40,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:54:40 BoogieIcfgContainer [2023-08-03 21:54:40,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:54:40,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:54:40,344 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:54:40,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:54:40,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:54:39" (1/3) ... [2023-08-03 21:54:40,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69505b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:54:40, skipping insertion in model container [2023-08-03 21:54:40,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:54:39" (2/3) ... [2023-08-03 21:54:40,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69505b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:54:40, skipping insertion in model container [2023-08-03 21:54:40,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:54:40" (3/3) ... [2023-08-03 21:54:40,349 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_09_fmaxsym_bound2.i [2023-08-03 21:54:40,359 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:54:40,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:54:40,368 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:54:40,369 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:54:40,439 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:54:40,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 76 transitions, 157 flow [2023-08-03 21:54:40,512 INFO L124 PetriNetUnfolderBase]: 7/86 cut-off events. [2023-08-03 21:54:40,512 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:54:40,524 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 21:54:40,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 76 transitions, 157 flow [2023-08-03 21:54:40,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 76 transitions, 157 flow [2023-08-03 21:54:40,530 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:54:40,538 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 76 transitions, 157 flow [2023-08-03 21:54:40,540 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 76 transitions, 157 flow [2023-08-03 21:54:40,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 76 transitions, 157 flow [2023-08-03 21:54:40,566 INFO L124 PetriNetUnfolderBase]: 7/86 cut-off events. [2023-08-03 21:54:40,566 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:54:40,567 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 21:54:40,582 INFO L119 LiptonReduction]: Number of co-enabled transitions 1216 [2023-08-03 21:54:43,263 INFO L134 LiptonReduction]: Checked pairs total: 1020 [2023-08-03 21:54:43,263 INFO L136 LiptonReduction]: Total number of compositions: 82 [2023-08-03 21:54:43,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:54:43,280 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;@13c1de86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:54:43,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:54:43,284 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:54:43,284 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-03 21:54:43,284 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:54:43,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:54:43,285 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 21:54:43,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:54:43,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:54:43,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1943299761, now seen corresponding path program 1 times [2023-08-03 21:54:43,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:54:43,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075944902] [2023-08-03 21:54:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:54:43,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:54:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:54:43,401 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:54:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:54:43,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:54:43,460 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:54:43,461 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:54:43,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:54:43,464 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:54:43,471 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 21:54:43,472 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:54:43,472 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:54:43,506 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:54:43,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 242 flow [2023-08-03 21:54:43,559 INFO L124 PetriNetUnfolderBase]: 13/140 cut-off events. [2023-08-03 21:54:43,560 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:54:43,563 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 21:54:43,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 115 transitions, 242 flow [2023-08-03 21:54:43,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 115 transitions, 242 flow [2023-08-03 21:54:43,564 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:54:43,564 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 115 transitions, 242 flow [2023-08-03 21:54:43,565 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 115 transitions, 242 flow [2023-08-03 21:54:43,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 242 flow [2023-08-03 21:54:43,597 INFO L124 PetriNetUnfolderBase]: 13/140 cut-off events. [2023-08-03 21:54:43,597 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:54:43,598 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 21:54:43,602 INFO L119 LiptonReduction]: Number of co-enabled transitions 5396 [2023-08-03 21:54:45,648 INFO L134 LiptonReduction]: Checked pairs total: 9076 [2023-08-03 21:54:45,648 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-03 21:54:45,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:54:45,651 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;@13c1de86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:54:45,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:54:45,655 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:54:45,655 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2023-08-03 21:54:45,655 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:54:45,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:54:45,656 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 21:54:45,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:54:45,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:54:45,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1391328986, now seen corresponding path program 1 times [2023-08-03 21:54:45,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:54:45,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871293167] [2023-08-03 21:54:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:54:45,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:54:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:54:45,826 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 21:54:45,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:54:45,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871293167] [2023-08-03 21:54:45,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871293167] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:54:45,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457912019] [2023-08-03 21:54:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:54:45,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:54:45,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:54:45,829 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 21:54:45,830 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 21:54:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:54:45,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:54:45,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:54:45,960 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 21:54:45,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:54:45,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457912019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:54:45,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:54:45,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 21:54:45,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080699936] [2023-08-03 21:54:45,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:54:45,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:54:45,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:54:45,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:54:45,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:54:46,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 223 [2023-08-03 21:54:46,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 68 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 21:54:46,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:54:46,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 223 [2023-08-03 21:54:46,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:54:46,117 INFO L124 PetriNetUnfolderBase]: 282/484 cut-off events. [2023-08-03 21:54:46,117 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-03 21:54:46,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 484 events. 282/484 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1873 event pairs, 0 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 158. Up to 309 conditions per place. [2023-08-03 21:54:46,121 INFO L140 encePairwiseOnDemand]: 219/223 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2023-08-03 21:54:46,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 52 transitions, 202 flow [2023-08-03 21:54:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:54:46,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:54:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 521 transitions. [2023-08-03 21:54:46,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672645739910314 [2023-08-03 21:54:46,145 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 521 transitions. [2023-08-03 21:54:46,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 521 transitions. [2023-08-03 21:54:46,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:54:46,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 521 transitions. [2023-08-03 21:54:46,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:54:46,161 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 21:54:46,162 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 21:54:46,164 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 68 flow. Second operand 5 states and 521 transitions. [2023-08-03 21:54:46,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 52 transitions, 202 flow [2023-08-03 21:54:46,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 52 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:54:46,170 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-08-03 21:54:46,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-08-03 21:54:46,178 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-08-03 21:54:46,183 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-08-03 21:54:46,183 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 21:54:46,183 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:54:46,195 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 21:54:46,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:54:46,392 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:54:46,393 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 21:54:46,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 242 flow [2023-08-03 21:54:46,411 INFO L124 PetriNetUnfolderBase]: 13/140 cut-off events. [2023-08-03 21:54:46,412 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:54:46,412 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 21:54:46,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 115 transitions, 242 flow [2023-08-03 21:54:46,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 115 transitions, 242 flow [2023-08-03 21:54:46,415 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:54:46,415 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 115 transitions, 242 flow [2023-08-03 21:54:46,416 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 115 transitions, 242 flow [2023-08-03 21:54:46,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 242 flow [2023-08-03 21:54:46,439 INFO L124 PetriNetUnfolderBase]: 13/140 cut-off events. [2023-08-03 21:54:46,440 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:54:46,441 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 21:54:46,443 INFO L119 LiptonReduction]: Number of co-enabled transitions 5396 [2023-08-03 21:54:48,394 INFO L134 LiptonReduction]: Checked pairs total: 8707 [2023-08-03 21:54:48,394 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-03 21:54:48,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:54:48,397 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;@13c1de86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:54:48,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:54:48,401 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:54:48,401 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-08-03 21:54:48,401 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 21:54:48,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:54:48,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:54:48,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:54:48,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:54:48,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1127019574, now seen corresponding path program 1 times [2023-08-03 21:54:48,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:54:48,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231010450] [2023-08-03 21:54:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:54:48,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:54:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:54:48,498 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 21:54:48,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:54:48,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231010450] [2023-08-03 21:54:48,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231010450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:54:48,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:54:48,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:54:48,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345933799] [2023-08-03 21:54:48,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:54:48,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:54:48,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:54:48,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:54:48,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:54:48,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 218 [2023-08-03 21:54:48,532 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 21:54:48,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:54:48,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 218 [2023-08-03 21:54:48,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:54:48,706 INFO L124 PetriNetUnfolderBase]: 772/1254 cut-off events. [2023-08-03 21:54:48,706 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-03 21:54:48,708 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 5536 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 21:54:48,714 INFO L140 encePairwiseOnDemand]: 212/218 looper letters, 34 selfloop transitions, 5 changer transitions 1/44 dead transitions. [2023-08-03 21:54:48,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 185 flow [2023-08-03 21:54:48,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:54:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:54:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-08-03 21:54:48,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47553516819571867 [2023-08-03 21:54:48,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-08-03 21:54:48,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-08-03 21:54:48,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:54:48,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-08-03 21:54:48,717 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 21:54:48,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 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 21:54:48,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 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 21:54:48,719 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 68 flow. Second operand 3 states and 311 transitions. [2023-08-03 21:54:48,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 185 flow [2023-08-03 21:54:48,720 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 21:54:48,722 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 100 flow [2023-08-03 21:54:48,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, 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 21:54:48,724 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2023-08-03 21:54:48,724 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 100 flow [2023-08-03 21:54:48,725 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 21:54:48,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:54:48,725 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:54:48,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:54:48,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:54:48,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:54:48,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1265599137, now seen corresponding path program 1 times [2023-08-03 21:54:48,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:54:48,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663336656] [2023-08-03 21:54:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:54:48,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:54:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:54:48,807 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 21:54:48,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:54:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663336656] [2023-08-03 21:54:48,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663336656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:54:48,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:54:48,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:54:48,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613342287] [2023-08-03 21:54:48,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:54:48,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:54:48,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:54:48,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:54:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:54:48,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 218 [2023-08-03 21:54:48,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 100 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 21:54:48,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:54:48,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 218 [2023-08-03 21:54:48,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:54:49,011 INFO L124 PetriNetUnfolderBase]: 1107/1723 cut-off events. [2023-08-03 21:54:49,012 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2023-08-03 21:54:49,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3975 conditions, 1723 events. 1107/1723 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7741 event pairs, 463 based on Foata normal form. 0/1418 useless extension candidates. Maximal degree in co-relation 1365. Up to 951 conditions per place. [2023-08-03 21:54:49,019 INFO L140 encePairwiseOnDemand]: 212/218 looper letters, 37 selfloop transitions, 6 changer transitions 2/49 dead transitions. [2023-08-03 21:54:49,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 49 transitions, 244 flow [2023-08-03 21:54:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:54:49,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:54:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-08-03 21:54:49,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47553516819571867 [2023-08-03 21:54:49,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-08-03 21:54:49,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-08-03 21:54:49,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:54:49,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-08-03 21:54:49,022 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 21:54:49,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 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 21:54:49,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 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 21:54:49,024 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 100 flow. Second operand 3 states and 311 transitions. [2023-08-03 21:54:49,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 49 transitions, 244 flow [2023-08-03 21:54:49,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 49 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:54:49,028 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 130 flow [2023-08-03 21:54:49,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-03 21:54:49,029 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-08-03 21:54:49,029 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 130 flow [2023-08-03 21:54:49,029 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 21:54:49,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:54:49,030 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 21:54:49,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 21:54:49,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:54:49,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:54:49,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1417151364, now seen corresponding path program 1 times [2023-08-03 21:54:49,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:54:49,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178765049] [2023-08-03 21:54:49,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:54:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:54:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:54:49,119 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 21:54:49,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:54:49,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178765049] [2023-08-03 21:54:49,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178765049] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:54:49,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:54:49,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 21:54:49,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994146793] [2023-08-03 21:54:49,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:54:49,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:54:49,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:54:49,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:54:49,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:54:49,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2023-08-03 21:54:49,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 130 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 21:54:49,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:54:49,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2023-08-03 21:54:49,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:54:49,450 INFO L124 PetriNetUnfolderBase]: 1785/2767 cut-off events. [2023-08-03 21:54:49,450 INFO L125 PetriNetUnfolderBase]: For 1088/1088 co-relation queries the response was YES. [2023-08-03 21:54:49,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7003 conditions, 2767 events. 1785/2767 cut-off events. For 1088/1088 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 12989 event pairs, 589 based on Foata normal form. 0/2356 useless extension candidates. Maximal degree in co-relation 5563. Up to 1237 conditions per place. [2023-08-03 21:54:49,465 INFO L140 encePairwiseOnDemand]: 209/218 looper letters, 65 selfloop transitions, 16 changer transitions 6/89 dead transitions. [2023-08-03 21:54:49,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 89 transitions, 487 flow [2023-08-03 21:54:49,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 21:54:49,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 21:54:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 579 transitions. [2023-08-03 21:54:49,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4426605504587156 [2023-08-03 21:54:49,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 579 transitions. [2023-08-03 21:54:49,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 579 transitions. [2023-08-03 21:54:49,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:54:49,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 579 transitions. [2023-08-03 21:54:49,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 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 21:54:49,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 218.0) internal successors, (1526), 7 states have internal predecessors, (1526), 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 21:54:49,472 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 218.0) internal successors, (1526), 7 states have internal predecessors, (1526), 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 21:54:49,473 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 130 flow. Second operand 6 states and 579 transitions. [2023-08-03 21:54:49,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 89 transitions, 487 flow [2023-08-03 21:54:49,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 89 transitions, 457 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:54:49,479 INFO L231 Difference]: Finished difference. Result has 42 places, 46 transitions, 242 flow [2023-08-03 21:54:49,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=242, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2023-08-03 21:54:49,480 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-08-03 21:54:49,480 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 242 flow [2023-08-03 21:54:49,480 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 21:54:49,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:54:49,481 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 21:54:49,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 21:54:49,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:54:49,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:54:49,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2030223240, now seen corresponding path program 2 times [2023-08-03 21:54:49,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:54:49,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370208129] [2023-08-03 21:54:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:54:49,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:54:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:54:49,591 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 21:54:49,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:54:49,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370208129] [2023-08-03 21:54:49,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370208129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:54:49,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:54:49,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 21:54:49,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813910050] [2023-08-03 21:54:49,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:54:49,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:54:49,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:54:49,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:54:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:54:49,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2023-08-03 21:54:49,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 242 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 21:54:49,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:54:49,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2023-08-03 21:54:49,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:54:50,056 INFO L124 PetriNetUnfolderBase]: 2615/4069 cut-off events. [2023-08-03 21:54:50,056 INFO L125 PetriNetUnfolderBase]: For 4060/4060 co-relation queries the response was YES. [2023-08-03 21:54:50,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11574 conditions, 4069 events. 2615/4069 cut-off events. For 4060/4060 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20742 event pairs, 1265 based on Foata normal form. 48/3552 useless extension candidates. Maximal degree in co-relation 10075. Up to 2665 conditions per place. [2023-08-03 21:54:50,077 INFO L140 encePairwiseOnDemand]: 209/218 looper letters, 78 selfloop transitions, 37 changer transitions 5/122 dead transitions. [2023-08-03 21:54:50,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 122 transitions, 845 flow [2023-08-03 21:54:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 21:54:50,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 21:54:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 666 transitions. [2023-08-03 21:54:50,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436435124508519 [2023-08-03 21:54:50,080 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 666 transitions. [2023-08-03 21:54:50,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 666 transitions. [2023-08-03 21:54:50,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:54:50,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 666 transitions. [2023-08-03 21:54:50,082 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 21:54:50,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 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 21:54:50,087 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 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 21:54:50,087 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 242 flow. Second operand 7 states and 666 transitions. [2023-08-03 21:54:50,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 122 transitions, 845 flow [2023-08-03 21:54:50,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 122 transitions, 845 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:54:50,097 INFO L231 Difference]: Finished difference. Result has 53 places, 77 transitions, 640 flow [2023-08-03 21:54:50,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=640, PETRI_PLACES=53, PETRI_TRANSITIONS=77} [2023-08-03 21:54:50,099 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2023-08-03 21:54:50,099 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 77 transitions, 640 flow [2023-08-03 21:54:50,099 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 21:54:50,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:54:50,100 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 21:54:50,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 21:54:50,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:54:50,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:54:50,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1384041767, now seen corresponding path program 1 times [2023-08-03 21:54:50,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:54:50,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953812119] [2023-08-03 21:54:50,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:54:50,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:54:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:54:50,202 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 21:54:50,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:54:50,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953812119] [2023-08-03 21:54:50,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953812119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:54:50,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:54:50,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 21:54:50,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165062967] [2023-08-03 21:54:50,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:54:50,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:54:50,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:54:50,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:54:50,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:54:50,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2023-08-03 21:54:50,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 77 transitions, 640 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 21:54:50,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:54:50,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2023-08-03 21:54:50,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:54:50,814 INFO L124 PetriNetUnfolderBase]: 3391/5293 cut-off events. [2023-08-03 21:54:50,814 INFO L125 PetriNetUnfolderBase]: For 9244/9244 co-relation queries the response was YES. [2023-08-03 21:54:50,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16900 conditions, 5293 events. 3391/5293 cut-off events. For 9244/9244 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 28912 event pairs, 1868 based on Foata normal form. 44/4556 useless extension candidates. Maximal degree in co-relation 15438. Up to 4020 conditions per place. [2023-08-03 21:54:50,849 INFO L140 encePairwiseOnDemand]: 209/218 looper letters, 117 selfloop transitions, 22 changer transitions 5/146 dead transitions. [2023-08-03 21:54:50,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 146 transitions, 1235 flow [2023-08-03 21:54:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 21:54:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 21:54:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2023-08-03 21:54:50,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43905635648754915 [2023-08-03 21:54:50,852 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2023-08-03 21:54:50,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2023-08-03 21:54:50,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:54:50,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2023-08-03 21:54:50,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 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 21:54:50,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 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 21:54:50,857 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 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 21:54:50,857 INFO L175 Difference]: Start difference. First operand has 53 places, 77 transitions, 640 flow. Second operand 7 states and 670 transitions. [2023-08-03 21:54:50,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 146 transitions, 1235 flow [2023-08-03 21:54:50,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 146 transitions, 1231 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 21:54:50,883 INFO L231 Difference]: Finished difference. Result has 63 places, 99 transitions, 906 flow [2023-08-03 21:54:50,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=53, 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=906, PETRI_PLACES=63, PETRI_TRANSITIONS=99} [2023-08-03 21:54:50,885 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2023-08-03 21:54:50,885 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 99 transitions, 906 flow [2023-08-03 21:54:50,886 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 21:54:50,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:54:50,886 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 21:54:50,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 21:54:50,889 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:54:50,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:54:50,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2031116025, now seen corresponding path program 2 times [2023-08-03 21:54:50,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:54:50,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627683600] [2023-08-03 21:54:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:54:50,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:54:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:54:50,959 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 21:54:50,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:54:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627683600] [2023-08-03 21:54:50,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627683600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:54:50,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:54:50,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 21:54:50,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255127527] [2023-08-03 21:54:50,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:54:50,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:54:50,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:54:50,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:54:50,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:54:50,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2023-08-03 21:54:50,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 99 transitions, 906 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 21:54:50,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:54:50,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2023-08-03 21:54:50,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:54:51,703 INFO L124 PetriNetUnfolderBase]: 4354/6788 cut-off events. [2023-08-03 21:54:51,703 INFO L125 PetriNetUnfolderBase]: For 15884/15884 co-relation queries the response was YES. [2023-08-03 21:54:51,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23219 conditions, 6788 events. 4354/6788 cut-off events. For 15884/15884 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 39236 event pairs, 1113 based on Foata normal form. 44/5770 useless extension candidates. Maximal degree in co-relation 21822. Up to 2792 conditions per place. [2023-08-03 21:54:51,741 INFO L140 encePairwiseOnDemand]: 209/218 looper letters, 119 selfloop transitions, 51 changer transitions 6/178 dead transitions. [2023-08-03 21:54:51,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 178 transitions, 1769 flow [2023-08-03 21:54:51,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 21:54:51,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 21:54:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 581 transitions. [2023-08-03 21:54:51,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441896024464832 [2023-08-03 21:54:51,744 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 581 transitions. [2023-08-03 21:54:51,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 581 transitions. [2023-08-03 21:54:51,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:54:51,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 581 transitions. [2023-08-03 21:54:51,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:54:51,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 218.0) internal successors, (1526), 7 states have internal predecessors, (1526), 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 21:54:51,748 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 218.0) internal successors, (1526), 7 states have internal predecessors, (1526), 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 21:54:51,748 INFO L175 Difference]: Start difference. First operand has 63 places, 99 transitions, 906 flow. Second operand 6 states and 581 transitions. [2023-08-03 21:54:51,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 178 transitions, 1769 flow [2023-08-03 21:54:51,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 178 transitions, 1719 flow, removed 25 selfloop flow, removed 0 redundant places. [2023-08-03 21:54:51,829 INFO L231 Difference]: Finished difference. Result has 73 places, 124 transitions, 1335 flow [2023-08-03 21:54:51,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=1335, PETRI_PLACES=73, PETRI_TRANSITIONS=124} [2023-08-03 21:54:51,831 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2023-08-03 21:54:51,831 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 124 transitions, 1335 flow [2023-08-03 21:54:51,831 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 21:54:51,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:54:51,832 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 21:54:51,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 21:54:51,832 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:54:51,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:54:51,833 INFO L85 PathProgramCache]: Analyzing trace with hash -435695908, now seen corresponding path program 1 times [2023-08-03 21:54:51,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:54:51,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541181620] [2023-08-03 21:54:51,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:54:51,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:54:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:54:51,917 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 21:54:51,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:54:51,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541181620] [2023-08-03 21:54:51,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541181620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:54:51,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:54:51,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:54:51,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708816642] [2023-08-03 21:54:51,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:54:51,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:54:51,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:54:51,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:54:51,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:54:51,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 218 [2023-08-03 21:54:51,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 124 transitions, 1335 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 21:54:51,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:54:51,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 218 [2023-08-03 21:54:51,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:54:52,224 INFO L124 PetriNetUnfolderBase]: 1772/3038 cut-off events. [2023-08-03 21:54:52,225 INFO L125 PetriNetUnfolderBase]: For 9594/9606 co-relation queries the response was YES. [2023-08-03 21:54:52,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10854 conditions, 3038 events. 1772/3038 cut-off events. For 9594/9606 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17091 event pairs, 983 based on Foata normal form. 68/2628 useless extension candidates. Maximal degree in co-relation 10668. Up to 2003 conditions per place. [2023-08-03 21:54:52,238 INFO L140 encePairwiseOnDemand]: 214/218 looper letters, 0 selfloop transitions, 0 changer transitions 92/92 dead transitions. [2023-08-03 21:54:52,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 940 flow [2023-08-03 21:54:52,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:54:52,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:54:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-03 21:54:52,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030581039755352 [2023-08-03 21:54:52,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-03 21:54:52,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-03 21:54:52,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:54:52,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-03 21:54:52,242 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 21:54:52,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 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 21:54:52,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 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 21:54:52,243 INFO L175 Difference]: Start difference. First operand has 73 places, 124 transitions, 1335 flow. Second operand 3 states and 329 transitions. [2023-08-03 21:54:52,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 940 flow [2023-08-03 21:54:52,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 92 transitions, 815 flow, removed 30 selfloop flow, removed 8 redundant places. [2023-08-03 21:54:52,287 INFO L231 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2023-08-03 21:54:52,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=65, PETRI_TRANSITIONS=0} [2023-08-03 21:54:52,289 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2023-08-03 21:54:52,290 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2023-08-03 21:54:52,290 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 21:54:52,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 21:54:52,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 21:54:52,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 21:54:52,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 21:54:52,291 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2023-08-03 21:54:52,292 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (2/2) [2023-08-03 21:54:52,294 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:54:52,295 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:54:52,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:54:52 BasicIcfg [2023-08-03 21:54:52,301 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:54:52,301 INFO L158 Benchmark]: Toolchain (without parser) took 12823.59ms. Allocated memory was 515.9MB in the beginning and 620.8MB in the end (delta: 104.9MB). Free memory was 467.9MB in the beginning and 260.4MB in the end (delta: 207.6MB). Peak memory consumption was 312.8MB. Max. memory is 16.0GB. [2023-08-03 21:54:52,302 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 373.3MB. Free memory was 325.9MB in the beginning and 325.8MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:54:52,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.15ms. Allocated memory is still 515.9MB. Free memory was 467.9MB in the beginning and 448.2MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 21:54:52,302 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.77ms. Allocated memory is still 515.9MB. Free memory was 448.2MB in the beginning and 446.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:54:52,302 INFO L158 Benchmark]: Boogie Preprocessor took 37.17ms. Allocated memory is still 515.9MB. Free memory was 446.1MB in the beginning and 444.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:54:52,303 INFO L158 Benchmark]: RCFGBuilder took 355.70ms. Allocated memory is still 515.9MB. Free memory was 444.5MB in the beginning and 429.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 21:54:52,303 INFO L158 Benchmark]: TraceAbstraction took 11957.53ms. Allocated memory was 515.9MB in the beginning and 620.8MB in the end (delta: 104.9MB). Free memory was 428.7MB in the beginning and 260.4MB in the end (delta: 168.3MB). Peak memory consumption was 275.1MB. Max. memory is 16.0GB. [2023-08-03 21:54:52,305 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 373.3MB. Free memory was 325.9MB in the beginning and 325.8MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 411.15ms. Allocated memory is still 515.9MB. Free memory was 467.9MB in the beginning and 448.2MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.77ms. Allocated memory is still 515.9MB. Free memory was 448.2MB in the beginning and 446.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.17ms. Allocated memory is still 515.9MB. Free memory was 446.1MB in the beginning and 444.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 355.70ms. Allocated memory is still 515.9MB. Free memory was 444.5MB in the beginning and 429.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 11957.53ms. Allocated memory was 515.9MB in the beginning and 620.8MB in the end (delta: 104.9MB). Free memory was 428.7MB in the beginning and 260.4MB in the end (delta: 168.3MB). Peak memory consumption was 275.1MB. 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: 2.7s, 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: 2.1s, 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 109 PlacesBefore, 29 PlacesAfterwards, 115 TransitionsBefore, 28 TransitionsAfterwards, 5396 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 7 ChoiceCompositions, 103 TotalNumberOfCompositions, 8707 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6033, independent: 5846, independent conditional: 0, independent unconditional: 5846, 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: 3055, independent: 3030, independent conditional: 0, independent unconditional: 3030, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6033, independent: 2816, independent conditional: 0, independent unconditional: 2816, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 3055, unknown conditional: 0, unknown unconditional: 3055] , Statistics on independence cache: Total cache size (in pairs): 122, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, 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 for thread instance sufficiency 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: 3.0s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 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: 2.9s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 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: 5.9s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 377 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 288 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1103 IncrementalHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 24 mSDtfsCounter, 1103 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1335occurred in iteration=6, InterpolantAutomatonStates: 35, 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, 0.5s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 12/12 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 21:54:52,325 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...