/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_19-publish-precision_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:26:16,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:26:16,891 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 12:26:16,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:26:16,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:26:16,919 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:26:16,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:26:16,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:26:16,924 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:26:16,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:26:16,926 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:26:16,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:26:16,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:26:16,928 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:26:16,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:26:16,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:26:16,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:26:16,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:26:16,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:26:16,928 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:26:16,929 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:26:16,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:26:16,929 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:26:16,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:26:16,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:26:16,930 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:26:16,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:26:16,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:26:16,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:26:16,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:26:16,931 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:26:16,931 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:26:16,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:26:16,931 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:26:16,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:26:16,931 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:26:17,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:26:17,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:26:17,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:26:17,192 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:26:17,193 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:26:17,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_19-publish-precision_true.i [2023-08-26 12:26:18,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:26:18,319 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:26:18,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_19-publish-precision_true.i [2023-08-26 12:26:18,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95c862cc/e40b0df70d1d44208342178d1d438cbe/FLAGb65f3ff44 [2023-08-26 12:26:18,346 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95c862cc/e40b0df70d1d44208342178d1d438cbe [2023-08-26 12:26:18,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:26:18,350 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:26:18,351 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:26:18,351 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:26:18,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:26:18,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:26:18" (1/1) ... [2023-08-26 12:26:18,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134569bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18, skipping insertion in model container [2023-08-26 12:26:18,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:26:18" (1/1) ... [2023-08-26 12:26:18,394 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:26:18,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:26:18,641 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:26:18,662 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 12:26:18,663 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 12:26:18,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:26:18,698 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:26:18,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18 WrapperNode [2023-08-26 12:26:18,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:26:18,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:26:18,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:26:18,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:26:18,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2023-08-26 12:26:18,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2023-08-26 12:26:18,723 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 75 [2023-08-26 12:26:18,723 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:26:18,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:26:18,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:26:18,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:26:18,729 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2023-08-26 12:26:18,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2023-08-26 12:26:18,731 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2023-08-26 12:26:18,731 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2023-08-26 12:26:18,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2023-08-26 12:26:18,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2023-08-26 12:26:18,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2023-08-26 12:26:18,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2023-08-26 12:26:18,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:26:18,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:26:18,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:26:18,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:26:18,739 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (1/1) ... [2023-08-26 12:26:18,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:26:18,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:26:18,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 12:26:18,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 12:26:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 12:26:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:26:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:26:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:26:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:26:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 12:26:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 12:26:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:26:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:26:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:26:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:26:18,795 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 12:26:18,896 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:26:18,900 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:26:19,083 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:26:19,089 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:26:19,089 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:26:19,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:26:19 BoogieIcfgContainer [2023-08-26 12:26:19,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:26:19,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:26:19,092 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:26:19,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:26:19,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:26:18" (1/3) ... [2023-08-26 12:26:19,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3a0b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:26:19, skipping insertion in model container [2023-08-26 12:26:19,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:26:18" (2/3) ... [2023-08-26 12:26:19,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3a0b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:26:19, skipping insertion in model container [2023-08-26 12:26:19,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:26:19" (3/3) ... [2023-08-26 12:26:19,096 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_19-publish-precision_true.i [2023-08-26 12:26:19,108 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:26:19,108 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-26 12:26:19,109 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:26:19,180 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 12:26:19,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 85 transitions, 178 flow [2023-08-26 12:26:19,249 INFO L124 PetriNetUnfolderBase]: 4/84 cut-off events. [2023-08-26 12:26:19,249 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:26:19,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 4/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2023-08-26 12:26:19,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 85 transitions, 178 flow [2023-08-26 12:26:19,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 157 flow [2023-08-26 12:26:19,262 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:26:19,271 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 77 transitions, 157 flow [2023-08-26 12:26:19,273 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 77 transitions, 157 flow [2023-08-26 12:26:19,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 157 flow [2023-08-26 12:26:19,297 INFO L124 PetriNetUnfolderBase]: 4/77 cut-off events. [2023-08-26 12:26:19,297 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:26:19,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 4/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2023-08-26 12:26:19,299 INFO L119 LiptonReduction]: Number of co-enabled transitions 416 [2023-08-26 12:26:22,152 INFO L134 LiptonReduction]: Checked pairs total: 1407 [2023-08-26 12:26:22,152 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-26 12:26:22,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:26:22,164 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56b68537, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:26:22,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-26 12:26:22,165 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:26:22,165 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:26:22,165 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:26:22,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:26:22,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:26:22,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-26 12:26:22,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:26:22,169 INFO L85 PathProgramCache]: Analyzing trace with hash 329, now seen corresponding path program 1 times [2023-08-26 12:26:22,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:26:22,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437349799] [2023-08-26 12:26:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:26:22,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:26:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:26:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:26:22,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:26:22,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437349799] [2023-08-26 12:26:22,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437349799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:26:22,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:26:22,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:26:22,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196077798] [2023-08-26 12:26:22,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:26:22,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:26:22,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:26:22,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:26:22,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:26:22,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 172 [2023-08-26 12:26:22,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 39 flow. Second operand has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:26:22,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 172 [2023-08-26 12:26:22,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:26:22,294 INFO L124 PetriNetUnfolderBase]: 28/69 cut-off events. [2023-08-26 12:26:22,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:26:22,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 69 events. 28/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 181 event pairs, 28 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 134. Up to 70 conditions per place. [2023-08-26 12:26:22,296 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 13 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2023-08-26 12:26:22,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 55 flow [2023-08-26 12:26:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:26:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:26:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 171 transitions. [2023-08-26 12:26:22,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49709302325581395 [2023-08-26 12:26:22,306 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 171 transitions. [2023-08-26 12:26:22,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 171 transitions. [2023-08-26 12:26:22,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:26:22,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 171 transitions. [2023-08-26 12:26:22,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,317 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,318 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 39 flow. Second operand 2 states and 171 transitions. [2023-08-26 12:26:22,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 55 flow [2023-08-26 12:26:22,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 54 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:26:22,321 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 28 flow [2023-08-26 12:26:22,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-08-26 12:26:22,324 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -4 predicate places. [2023-08-26 12:26:22,324 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 28 flow [2023-08-26 12:26:22,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:26:22,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 12:26:22,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:26:22,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-26 12:26:22,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:26:22,326 INFO L85 PathProgramCache]: Analyzing trace with hash 10105880, now seen corresponding path program 1 times [2023-08-26 12:26:22,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:26:22,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590868286] [2023-08-26 12:26:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:26:22,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:26:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:26:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:26:22,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:26:22,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590868286] [2023-08-26 12:26:22,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590868286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:26:22,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:26:22,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:26:22,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243197983] [2023-08-26 12:26:22,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:26:22,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:26:22,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:26:22,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:26:22,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:26:22,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 172 [2023-08-26 12:26:22,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:26:22,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 172 [2023-08-26 12:26:22,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:26:22,563 INFO L124 PetriNetUnfolderBase]: 21/54 cut-off events. [2023-08-26 12:26:22,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:26:22,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 54 events. 21/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 123 event pairs, 21 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 110. Up to 54 conditions per place. [2023-08-26 12:26:22,565 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 11 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2023-08-26 12:26:22,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 12 transitions, 50 flow [2023-08-26 12:26:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:26:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:26:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2023-08-26 12:26:22,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39147286821705424 [2023-08-26 12:26:22,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2023-08-26 12:26:22,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2023-08-26 12:26:22,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:26:22,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2023-08-26 12:26:22,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,573 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 28 flow. Second operand 3 states and 202 transitions. [2023-08-26 12:26:22,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 12 transitions, 50 flow [2023-08-26 12:26:22,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:26:22,573 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2023-08-26 12:26:22,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-26 12:26:22,574 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -3 predicate places. [2023-08-26 12:26:22,574 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 28 flow [2023-08-26 12:26:22,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:26:22,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 12:26:22,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:26:22,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-26 12:26:22,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:26:22,579 INFO L85 PathProgramCache]: Analyzing trace with hash 10105879, now seen corresponding path program 1 times [2023-08-26 12:26:22,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:26:22,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688300150] [2023-08-26 12:26:22,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:26:22,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:26:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:26:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:26:22,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:26:22,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688300150] [2023-08-26 12:26:22,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688300150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:26:22,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:26:22,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:26:22,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657521707] [2023-08-26 12:26:22,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:26:22,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:26:22,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:26:22,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:26:22,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:26:22,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 172 [2023-08-26 12:26:22,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:26:22,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 172 [2023-08-26 12:26:22,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:26:22,642 INFO L124 PetriNetUnfolderBase]: 14/39 cut-off events. [2023-08-26 12:26:22,642 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:26:22,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 39 events. 14/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 14 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 81. Up to 39 conditions per place. [2023-08-26 12:26:22,642 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 7 selfloop transitions, 1 changer transitions 3/11 dead transitions. [2023-08-26 12:26:22,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 11 transitions, 48 flow [2023-08-26 12:26:22,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:26:22,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:26:22,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2023-08-26 12:26:22,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38372093023255816 [2023-08-26 12:26:22,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2023-08-26 12:26:22,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2023-08-26 12:26:22,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:26:22,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2023-08-26 12:26:22,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,645 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states and 198 transitions. [2023-08-26 12:26:22,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 11 transitions, 48 flow [2023-08-26 12:26:22,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 11 transitions, 47 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:26:22,646 INFO L231 Difference]: Finished difference. Result has 18 places, 8 transitions, 21 flow [2023-08-26 12:26:22,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=21, PETRI_PLACES=18, PETRI_TRANSITIONS=8} [2023-08-26 12:26:22,646 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -3 predicate places. [2023-08-26 12:26:22,646 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 8 transitions, 21 flow [2023-08-26 12:26:22,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:26:22,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 12:26:22,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:26:22,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-26 12:26:22,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:26:22,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1120789097, now seen corresponding path program 1 times [2023-08-26 12:26:22,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:26:22,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145746392] [2023-08-26 12:26:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:26:22,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:26:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:26:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:26:22,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:26:22,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145746392] [2023-08-26 12:26:22,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145746392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:26:22,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:26:22,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:26:22,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488508975] [2023-08-26 12:26:22,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:26:22,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:26:22,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:26:22,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:26:22,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:26:22,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 172 [2023-08-26 12:26:22,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 8 transitions, 21 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:26:22,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 172 [2023-08-26 12:26:22,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:26:22,696 INFO L124 PetriNetUnfolderBase]: 6/19 cut-off events. [2023-08-26 12:26:22,696 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:26:22,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 19 events. 6/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 4 based on Foata normal form. 3/22 useless extension candidates. Maximal degree in co-relation 42. Up to 15 conditions per place. [2023-08-26 12:26:22,696 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2023-08-26 12:26:22,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 9 transitions, 41 flow [2023-08-26 12:26:22,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:26:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:26:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2023-08-26 12:26:22,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.437984496124031 [2023-08-26 12:26:22,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2023-08-26 12:26:22,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2023-08-26 12:26:22,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:26:22,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2023-08-26 12:26:22,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,699 INFO L175 Difference]: Start difference. First operand has 18 places, 8 transitions, 21 flow. Second operand 3 states and 226 transitions. [2023-08-26 12:26:22,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 9 transitions, 41 flow [2023-08-26 12:26:22,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 9 transitions, 40 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:26:22,700 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-26 12:26:22,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-26 12:26:22,700 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -6 predicate places. [2023-08-26 12:26:22,700 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-26 12:26:22,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:26:22,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (7 of 8 remaining) [2023-08-26 12:26:22,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-26 12:26:22,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-26 12:26:22,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-26 12:26:22,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-08-26 12:26:22,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2023-08-26 12:26:22,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (1 of 8 remaining) [2023-08-26 12:26:22,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (0 of 8 remaining) [2023-08-26 12:26:22,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:26:22,703 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-26 12:26:22,706 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:26:22,706 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:26:22,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:26:22 BasicIcfg [2023-08-26 12:26:22,708 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:26:22,709 INFO L158 Benchmark]: Toolchain (without parser) took 4358.94ms. Allocated memory was 388.0MB in the beginning and 474.0MB in the end (delta: 86.0MB). Free memory was 363.2MB in the beginning and 412.1MB in the end (delta: -48.8MB). Peak memory consumption was 38.6MB. Max. memory is 16.0GB. [2023-08-26 12:26:22,709 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 388.0MB. Free memory was 364.1MB in the beginning and 363.9MB in the end (delta: 176.0kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:26:22,709 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.21ms. Allocated memory is still 388.0MB. Free memory was 363.2MB in the beginning and 343.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 12:26:22,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.51ms. Allocated memory is still 388.0MB. Free memory was 343.9MB in the beginning and 341.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:26:22,710 INFO L158 Benchmark]: Boogie Preprocessor took 14.13ms. Allocated memory is still 388.0MB. Free memory was 341.8MB in the beginning and 340.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:26:22,710 INFO L158 Benchmark]: RCFGBuilder took 352.23ms. Allocated memory is still 388.0MB. Free memory was 340.6MB in the beginning and 326.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 12:26:22,711 INFO L158 Benchmark]: TraceAbstraction took 3616.20ms. Allocated memory was 388.0MB in the beginning and 474.0MB in the end (delta: 86.0MB). Free memory was 326.3MB in the beginning and 412.1MB in the end (delta: -85.8MB). Peak memory consumption was 3.0MB. Max. memory is 16.0GB. [2023-08-26 12:26:22,712 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 388.0MB. Free memory was 364.1MB in the beginning and 363.9MB in the end (delta: 176.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 347.21ms. Allocated memory is still 388.0MB. Free memory was 363.2MB in the beginning and 343.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.51ms. Allocated memory is still 388.0MB. Free memory was 343.9MB in the beginning and 341.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 14.13ms. Allocated memory is still 388.0MB. Free memory was 341.8MB in the beginning and 340.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 352.23ms. Allocated memory is still 388.0MB. Free memory was 340.6MB in the beginning and 326.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3616.20ms. Allocated memory was 388.0MB in the beginning and 474.0MB in the end (delta: 86.0MB). Free memory was 326.3MB in the beginning and 412.1MB in the end (delta: -85.8MB). Peak memory consumption was 3.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 77 PlacesBefore, 21 PlacesAfterwards, 77 TransitionsBefore, 18 TransitionsAfterwards, 416 CoEnabledTransitionPairs, 8 FixpointIterations, 49 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 87 TotalNumberOfCompositions, 1407 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 499, independent: 329, independent conditional: 0, independent unconditional: 329, dependent: 170, dependent conditional: 0, dependent unconditional: 170, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 249, independent: 221, independent conditional: 0, independent unconditional: 221, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 499, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 249, unknown conditional: 0, unknown unconditional: 249] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 108 locations, 8 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: 3.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 51 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:26:22,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...