/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 --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:15:07,169 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:15:07,234 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 [2023-08-24 11:15:07,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:15:07,238 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:15:07,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:15:07,262 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:15:07,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:15:07,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:15:07,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:15:07,269 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:15:07,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:15:07,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:15:07,269 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:15:07,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:15:07,269 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:15:07,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:15:07,270 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:15:07,270 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:15:07,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:15:07,270 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:15:07,270 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:15:07,270 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:15:07,271 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:15:07,271 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:15:07,271 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:15:07,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:15:07,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:15:07,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:15:07,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:15:07,272 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:15:07,272 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:15:07,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:15:07,273 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:15:07,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:15:07,273 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:15:07,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:15:07,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:15:07,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:15:07,533 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:15:07,533 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:15:07,534 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2023-08-24 11:15:08,430 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:15:08,614 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:15:08,614 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2023-08-24 11:15:08,629 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/610816aef/c49627250f0e4a87aea15a9a2033fe40/FLAG006acab1e [2023-08-24 11:15:08,640 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/610816aef/c49627250f0e4a87aea15a9a2033fe40 [2023-08-24 11:15:08,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:15:08,644 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:15:08,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:15:08,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:15:08,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:15:08,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:15:08" (1/1) ... [2023-08-24 11:15:08,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@701eec5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:08, skipping insertion in model container [2023-08-24 11:15:08,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:15:08" (1/1) ... [2023-08-24 11:15:08,687 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:15:08,923 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30247,30260] [2023-08-24 11:15:08,926 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30452,30465] [2023-08-24 11:15:08,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:15:08,939 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:15:08,965 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-24 11:15:08,966 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-24 11:15:08,974 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30247,30260] [2023-08-24 11:15:08,976 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30452,30465] [2023-08-24 11:15:08,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:15:09,025 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:15:09,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:09 WrapperNode [2023-08-24 11:15:09,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:15:09,026 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:15:09,026 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:15:09,026 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:15:09,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:09" (1/1) ... [2023-08-24 11:15:09,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:09" (1/1) ... [2023-08-24 11:15:09,072 INFO L138 Inliner]: procedures = 169, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2023-08-24 11:15:09,073 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:15:09,074 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:15:09,074 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:15:09,074 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:15:09,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:09" (1/1) ... [2023-08-24 11:15:09,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:09" (1/1) ... [2023-08-24 11:15:09,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:09" (1/1) ... [2023-08-24 11:15:09,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:09" (1/1) ... [2023-08-24 11:15:09,096 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:09" (1/1) ... [2023-08-24 11:15:09,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:09" (1/1) ... [2023-08-24 11:15:09,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:09" (1/1) ... [2023-08-24 11:15:09,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:09" (1/1) ... [2023-08-24 11:15:09,100 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:15:09,101 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:15:09,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:15:09,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:15:09,101 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:09" (1/1) ... [2023-08-24 11:15:09,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:15:09,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:15:09,123 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) [2023-08-24 11:15:09,127 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 [2023-08-24 11:15:09,143 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2023-08-24 11:15:09,143 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2023-08-24 11:15:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 11:15:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2023-08-24 11:15:09,144 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2023-08-24 11:15:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:15:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 11:15:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:15:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:15:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:15:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:15:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:15:09,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:15:09,145 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 11:15:09,223 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:15:09,225 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:15:09,387 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:15:09,391 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:15:09,391 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:15:09,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:15:09 BoogieIcfgContainer [2023-08-24 11:15:09,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:15:09,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:15:09,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:15:09,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:15:09,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:15:08" (1/3) ... [2023-08-24 11:15:09,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a819033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:15:09, skipping insertion in model container [2023-08-24 11:15:09,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:15:09" (2/3) ... [2023-08-24 11:15:09,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a819033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:15:09, skipping insertion in model container [2023-08-24 11:15:09,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:15:09" (3/3) ... [2023-08-24 11:15:09,397 INFO L112 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2023-08-24 11:15:09,408 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:15:09,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-24 11:15:09,409 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:15:09,481 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 11:15:09,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 96 transitions, 208 flow [2023-08-24 11:15:09,560 INFO L124 PetriNetUnfolderBase]: 5/94 cut-off events. [2023-08-24 11:15:09,561 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 11:15:09,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 5/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2023-08-24 11:15:09,565 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 96 transitions, 208 flow [2023-08-24 11:15:09,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 85 transitions, 179 flow [2023-08-24 11:15:09,572 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:15:09,580 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 85 transitions, 179 flow [2023-08-24 11:15:09,583 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 85 transitions, 179 flow [2023-08-24 11:15:09,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 85 transitions, 179 flow [2023-08-24 11:15:09,608 INFO L124 PetriNetUnfolderBase]: 5/85 cut-off events. [2023-08-24 11:15:09,608 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 11:15:09,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 85 events. 5/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2023-08-24 11:15:09,610 INFO L119 LiptonReduction]: Number of co-enabled transitions 1042 [2023-08-24 11:15:12,419 INFO L134 LiptonReduction]: Checked pairs total: 3672 [2023-08-24 11:15:12,419 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-08-24 11:15:12,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:15:12,431 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;@2511f530, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:15:12,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-24 11:15:12,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:15:12,434 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2023-08-24 11:15:12,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:15:12,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:15:12,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 11:15:12,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 11:15:12,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:15:12,438 INFO L85 PathProgramCache]: Analyzing trace with hash 332754866, now seen corresponding path program 1 times [2023-08-24 11:15:12,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:15:12,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384792550] [2023-08-24 11:15:12,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:15:12,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:15:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:15:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:15:12,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:15:12,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384792550] [2023-08-24 11:15:12,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384792550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:15:12,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:15:12,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:15:12,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715105514] [2023-08-24 11:15:12,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:15:12,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:15:12,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:15:12,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:15:12,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:15:12,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 167 [2023-08-24 11:15:12,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2023-08-24 11:15:12,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:15:12,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 167 [2023-08-24 11:15:12,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:15:12,692 INFO L124 PetriNetUnfolderBase]: 159/314 cut-off events. [2023-08-24 11:15:12,693 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-24 11:15:12,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 314 events. 159/314 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1281 event pairs, 66 based on Foata normal form. 8/267 useless extension candidates. Maximal degree in co-relation 546. Up to 174 conditions per place. [2023-08-24 11:15:12,695 INFO L140 encePairwiseOnDemand]: 158/167 looper letters, 26 selfloop transitions, 4 changer transitions 1/35 dead transitions. [2023-08-24 11:15:12,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 147 flow [2023-08-24 11:15:12,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:15:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:15:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2023-08-24 11:15:12,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528942115768463 [2023-08-24 11:15:12,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2023-08-24 11:15:12,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2023-08-24 11:15:12,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:15:12,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2023-08-24 11:15:12,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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) [2023-08-24 11:15:12,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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) [2023-08-24 11:15:12,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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) [2023-08-24 11:15:12,715 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 63 flow. Second operand 3 states and 277 transitions. [2023-08-24 11:15:12,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 147 flow [2023-08-24 11:15:12,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 139 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 11:15:12,718 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 82 flow [2023-08-24 11:15:12,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2023-08-24 11:15:12,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2023-08-24 11:15:12,723 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 82 flow [2023-08-24 11:15:12,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2023-08-24 11:15:12,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:15:12,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:15:12,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:15:12,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 11:15:12,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:15:12,730 INFO L85 PathProgramCache]: Analyzing trace with hash 925003278, now seen corresponding path program 1 times [2023-08-24 11:15:12,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:15:12,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453442847] [2023-08-24 11:15:12,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:15:12,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:15:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:15:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:15:12,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:15:12,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453442847] [2023-08-24 11:15:12,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453442847] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:15:12,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:15:12,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:15:12,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173322906] [2023-08-24 11:15:12,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:15:12,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:15:12,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:15:12,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:15:12,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:15:12,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 167 [2023-08-24 11:15:12,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2023-08-24 11:15:12,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:15:12,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 167 [2023-08-24 11:15:12,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:15:12,874 INFO L124 PetriNetUnfolderBase]: 121/252 cut-off events. [2023-08-24 11:15:12,874 INFO L125 PetriNetUnfolderBase]: For 90/94 co-relation queries the response was YES. [2023-08-24 11:15:12,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 252 events. 121/252 cut-off events. For 90/94 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 992 event pairs, 56 based on Foata normal form. 28/265 useless extension candidates. Maximal degree in co-relation 476. Up to 135 conditions per place. [2023-08-24 11:15:12,875 INFO L140 encePairwiseOnDemand]: 161/167 looper letters, 20 selfloop transitions, 4 changer transitions 5/33 dead transitions. [2023-08-24 11:15:12,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 153 flow [2023-08-24 11:15:12,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:15:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:15:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-24 11:15:12,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5409181636726547 [2023-08-24 11:15:12,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-24 11:15:12,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-24 11:15:12,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:15:12,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-24 11:15:12,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2023-08-24 11:15:12,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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) [2023-08-24 11:15:12,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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) [2023-08-24 11:15:12,882 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 82 flow. Second operand 3 states and 271 transitions. [2023-08-24 11:15:12,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 153 flow [2023-08-24 11:15:12,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:15:12,884 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 80 flow [2023-08-24 11:15:12,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-24 11:15:12,888 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-08-24 11:15:12,889 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 80 flow [2023-08-24 11:15:12,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2023-08-24 11:15:12,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:15:12,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:15:12,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:15:12,889 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 11:15:12,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:15:12,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1025775419, now seen corresponding path program 1 times [2023-08-24 11:15:12,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:15:12,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427807010] [2023-08-24 11:15:12,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:15:12,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:15:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:15:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:15:13,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:15:13,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427807010] [2023-08-24 11:15:13,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427807010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:15:13,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:15:13,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:15:13,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989029526] [2023-08-24 11:15:13,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:15:13,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:15:13,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:15:13,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:15:13,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:15:13,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 167 [2023-08-24 11:15:13,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2023-08-24 11:15:13,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:15:13,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 167 [2023-08-24 11:15:13,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:15:13,040 INFO L124 PetriNetUnfolderBase]: 70/185 cut-off events. [2023-08-24 11:15:13,040 INFO L125 PetriNetUnfolderBase]: For 73/75 co-relation queries the response was YES. [2023-08-24 11:15:13,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 185 events. 70/185 cut-off events. For 73/75 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 767 event pairs, 32 based on Foata normal form. 12/184 useless extension candidates. Maximal degree in co-relation 306. Up to 91 conditions per place. [2023-08-24 11:15:13,044 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 17 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2023-08-24 11:15:13,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 125 flow [2023-08-24 11:15:13,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:15:13,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:15:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-08-24 11:15:13,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5329341317365269 [2023-08-24 11:15:13,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-08-24 11:15:13,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-08-24 11:15:13,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:15:13,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-08-24 11:15:13,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2023-08-24 11:15:13,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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) [2023-08-24 11:15:13,051 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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) [2023-08-24 11:15:13,051 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 80 flow. Second operand 3 states and 267 transitions. [2023-08-24 11:15:13,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 125 flow [2023-08-24 11:15:13,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:15:13,054 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 71 flow [2023-08-24 11:15:13,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-24 11:15:13,054 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2023-08-24 11:15:13,054 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 71 flow [2023-08-24 11:15:13,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2023-08-24 11:15:13,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:15:13,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:15:13,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:15:13,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 11:15:13,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:15:13,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1236650994, now seen corresponding path program 1 times [2023-08-24 11:15:13,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:15:13,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833068565] [2023-08-24 11:15:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:15:13,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:15:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:15:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:15:13,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:15:13,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833068565] [2023-08-24 11:15:13,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833068565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:15:13,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:15:13,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:15:13,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058634983] [2023-08-24 11:15:13,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:15:13,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:15:13,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:15:13,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:15:13,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:15:13,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 167 [2023-08-24 11:15:13,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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) [2023-08-24 11:15:13,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:15:13,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 167 [2023-08-24 11:15:13,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:15:13,244 INFO L124 PetriNetUnfolderBase]: 117/268 cut-off events. [2023-08-24 11:15:13,244 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-08-24 11:15:13,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 268 events. 117/268 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1103 event pairs, 23 based on Foata normal form. 6/264 useless extension candidates. Maximal degree in co-relation 490. Up to 74 conditions per place. [2023-08-24 11:15:13,245 INFO L140 encePairwiseOnDemand]: 159/167 looper letters, 21 selfloop transitions, 10 changer transitions 16/50 dead transitions. [2023-08-24 11:15:13,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 50 transitions, 242 flow [2023-08-24 11:15:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:15:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:15:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 379 transitions. [2023-08-24 11:15:13,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4538922155688623 [2023-08-24 11:15:13,247 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 379 transitions. [2023-08-24 11:15:13,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 379 transitions. [2023-08-24 11:15:13,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:15:13,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 379 transitions. [2023-08-24 11:15:13,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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) [2023-08-24 11:15:13,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2023-08-24 11:15:13,250 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2023-08-24 11:15:13,250 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 71 flow. Second operand 5 states and 379 transitions. [2023-08-24 11:15:13,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 50 transitions, 242 flow [2023-08-24 11:15:13,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 50 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:15:13,253 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 94 flow [2023-08-24 11:15:13,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-24 11:15:13,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-24 11:15:13,254 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 94 flow [2023-08-24 11:15:13,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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) [2023-08-24 11:15:13,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:15:13,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:15:13,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:15:13,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 11:15:13,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:15:13,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1822593622, now seen corresponding path program 2 times [2023-08-24 11:15:13,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:15:13,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815237232] [2023-08-24 11:15:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:15:13,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:15:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:15:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:15:13,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:15:13,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815237232] [2023-08-24 11:15:13,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815237232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:15:13,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:15:13,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:15:13,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811235549] [2023-08-24 11:15:13,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:15:13,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:15:13,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:15:13,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:15:13,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:15:13,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 167 [2023-08-24 11:15:13,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2023-08-24 11:15:13,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:15:13,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 167 [2023-08-24 11:15:13,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:15:13,350 INFO L124 PetriNetUnfolderBase]: 51/126 cut-off events. [2023-08-24 11:15:13,351 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-24 11:15:13,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 126 events. 51/126 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 392 event pairs, 27 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 192. Up to 55 conditions per place. [2023-08-24 11:15:13,351 INFO L140 encePairwiseOnDemand]: 165/167 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-24 11:15:13,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 145 flow [2023-08-24 11:15:13,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:15:13,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:15:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-08-24 11:15:13,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5369261477045908 [2023-08-24 11:15:13,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-08-24 11:15:13,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-08-24 11:15:13,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:15:13,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-08-24 11:15:13,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2023-08-24 11:15:13,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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) [2023-08-24 11:15:13,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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) [2023-08-24 11:15:13,355 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 94 flow. Second operand 3 states and 269 transitions. [2023-08-24 11:15:13,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 145 flow [2023-08-24 11:15:13,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 132 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-24 11:15:13,357 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-08-24 11:15:13,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-08-24 11:15:13,358 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-08-24 11:15:13,358 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-08-24 11:15:13,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2023-08-24 11:15:13,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-24 11:15:13,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-24 11:15:13,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-24 11:15:13,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-24 11:15:13,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-24 11:15:13,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-24 11:15:13,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:15:13,361 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-24 11:15:13,364 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:15:13,364 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:15:13,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:15:13 BasicIcfg [2023-08-24 11:15:13,369 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:15:13,369 INFO L158 Benchmark]: Toolchain (without parser) took 4725.21ms. Allocated memory was 400.6MB in the beginning and 568.3MB in the end (delta: 167.8MB). Free memory was 355.8MB in the beginning and 528.6MB in the end (delta: -172.8MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:15:13,369 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 400.6MB. Free memory is still 377.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:15:13,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.87ms. Allocated memory is still 400.6MB. Free memory was 355.5MB in the beginning and 375.5MB in the end (delta: -20.0MB). Peak memory consumption was 22.8MB. Max. memory is 16.0GB. [2023-08-24 11:15:13,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.91ms. Allocated memory is still 400.6MB. Free memory was 375.5MB in the beginning and 373.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:15:13,373 INFO L158 Benchmark]: Boogie Preprocessor took 26.60ms. Allocated memory is still 400.6MB. Free memory was 373.4MB in the beginning and 372.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:15:13,373 INFO L158 Benchmark]: RCFGBuilder took 291.77ms. Allocated memory is still 400.6MB. Free memory was 372.0MB in the beginning and 357.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 11:15:13,373 INFO L158 Benchmark]: TraceAbstraction took 3975.13ms. Allocated memory was 400.6MB in the beginning and 568.3MB in the end (delta: 167.8MB). Free memory was 356.7MB in the beginning and 528.6MB in the end (delta: -171.9MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:15:13,374 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 400.6MB. Free memory is still 377.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 379.87ms. Allocated memory is still 400.6MB. Free memory was 355.5MB in the beginning and 375.5MB in the end (delta: -20.0MB). Peak memory consumption was 22.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.91ms. Allocated memory is still 400.6MB. Free memory was 375.5MB in the beginning and 373.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.60ms. Allocated memory is still 400.6MB. Free memory was 373.4MB in the beginning and 372.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 291.77ms. Allocated memory is still 400.6MB. Free memory was 372.0MB in the beginning and 357.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3975.13ms. Allocated memory was 400.6MB in the beginning and 568.3MB in the end (delta: 167.8MB). Free memory was 356.7MB in the beginning and 528.6MB in the end (delta: -171.9MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 253]: Unsoundness Warning unspecified type, defaulting to int C: short [253] - GenericResultAtLocation [Line: 253]: Unsoundness Warning unspecified type, defaulting to int C: short [253] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 87 PlacesBefore, 30 PlacesAfterwards, 85 TransitionsBefore, 27 TransitionsAfterwards, 1042 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 3672 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1464, independent: 1267, independent conditional: 0, independent unconditional: 1267, dependent: 197, dependent conditional: 0, dependent unconditional: 197, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 581, independent: 546, independent conditional: 0, independent unconditional: 546, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1464, independent: 721, independent conditional: 0, independent unconditional: 721, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 581, unknown conditional: 0, unknown unconditional: 581] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 702]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 710]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 125 locations, 6 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: 3.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 196 IncrementalHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 12 mSDtfsCounter, 196 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=4, InterpolantAutomatonStates: 17, 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, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 11:15:13,387 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...