/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 INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/04-mutex_51-mutex_ptr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 04:41:34,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 04:41:35,020 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 [2023-08-27 04:41:35,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 04:41:35,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 04:41:35,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 04:41:35,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 04:41:35,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 04:41:35,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 04:41:35,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 04:41:35,076 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 04:41:35,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 04:41:35,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 04:41:35,077 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 04:41:35,077 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 04:41:35,078 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 04:41:35,078 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 04:41:35,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 04:41:35,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 04:41:35,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 04:41:35,079 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 04:41:35,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 04:41:35,079 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 04:41:35,080 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 04:41:35,080 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 04:41:35,080 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 04:41:35,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 04:41:35,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:41:35,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 04:41:35,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 04:41:35,082 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 04:41:35,082 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 04:41:35,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 04:41:35,083 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 04:41:35,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 04:41:35,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 04:41:35,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 04:41:35,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 04:41:35,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 04:41:35,451 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 04:41:35,452 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 04:41:35,453 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_51-mutex_ptr.i [2023-08-27 04:41:36,682 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 04:41:37,017 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 04:41:37,018 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_51-mutex_ptr.i [2023-08-27 04:41:37,037 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8238bd367/d18e07fe8e214376be90149bf6a1d79f/FLAG3fdf10ba1 [2023-08-27 04:41:37,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8238bd367/d18e07fe8e214376be90149bf6a1d79f [2023-08-27 04:41:37,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 04:41:37,061 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 04:41:37,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 04:41:37,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 04:41:37,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 04:41:37,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:41:37" (1/1) ... [2023-08-27 04:41:37,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c15ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37, skipping insertion in model container [2023-08-27 04:41:37,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:41:37" (1/1) ... [2023-08-27 04:41:37,120 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 04:41:37,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:41:37,514 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 04:41:37,534 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 04:41:37,536 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 04:41:37,543 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-27 04:41:37,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:41:37,604 INFO L206 MainTranslator]: Completed translation [2023-08-27 04:41:37,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37 WrapperNode [2023-08-27 04:41:37,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 04:41:37,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 04:41:37,605 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 04:41:37,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 04:41:37,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37" (1/1) ... [2023-08-27 04:41:37,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37" (1/1) ... [2023-08-27 04:41:37,641 INFO L138 Inliner]: procedures = 262, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2023-08-27 04:41:37,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 04:41:37,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 04:41:37,642 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 04:41:37,642 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 04:41:37,649 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37" (1/1) ... [2023-08-27 04:41:37,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37" (1/1) ... [2023-08-27 04:41:37,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37" (1/1) ... [2023-08-27 04:41:37,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37" (1/1) ... [2023-08-27 04:41:37,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37" (1/1) ... [2023-08-27 04:41:37,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37" (1/1) ... [2023-08-27 04:41:37,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37" (1/1) ... [2023-08-27 04:41:37,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37" (1/1) ... [2023-08-27 04:41:37,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 04:41:37,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 04:41:37,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 04:41:37,667 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 04:41:37,668 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37" (1/1) ... [2023-08-27 04:41:37,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:41:37,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:41:37,693 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) [2023-08-27 04:41:37,708 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 [2023-08-27 04:41:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 04:41:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 04:41:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 04:41:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 04:41:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 04:41:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 04:41:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 04:41:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 04:41:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 04:41:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 04:41:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 04:41:37,728 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 04:41:37,841 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 04:41:37,843 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 04:41:38,024 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 04:41:38,029 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 04:41:38,030 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 04:41:38,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:41:38 BoogieIcfgContainer [2023-08-27 04:41:38,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 04:41:38,033 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 04:41:38,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 04:41:38,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 04:41:38,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:41:37" (1/3) ... [2023-08-27 04:41:38,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0212f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:41:38, skipping insertion in model container [2023-08-27 04:41:38,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:37" (2/3) ... [2023-08-27 04:41:38,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0212f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:41:38, skipping insertion in model container [2023-08-27 04:41:38,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:41:38" (3/3) ... [2023-08-27 04:41:38,038 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_51-mutex_ptr.i [2023-08-27 04:41:38,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 04:41:38,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-27 04:41:38,054 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 04:41:38,122 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 04:41:38,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 70 transitions, 148 flow [2023-08-27 04:41:38,203 INFO L124 PetriNetUnfolderBase]: 0/69 cut-off events. [2023-08-27 04:41:38,204 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 04:41:38,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 69 events. 0/69 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-27 04:41:38,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 70 transitions, 148 flow [2023-08-27 04:41:38,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 62 transitions, 127 flow [2023-08-27 04:41:38,217 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 04:41:38,228 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 62 transitions, 127 flow [2023-08-27 04:41:38,231 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 62 transitions, 127 flow [2023-08-27 04:41:38,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 62 transitions, 127 flow [2023-08-27 04:41:38,261 INFO L124 PetriNetUnfolderBase]: 0/62 cut-off events. [2023-08-27 04:41:38,261 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:41:38,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 0/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-27 04:41:38,262 INFO L119 LiptonReduction]: Number of co-enabled transitions 448 [2023-08-27 04:41:40,376 INFO L134 LiptonReduction]: Checked pairs total: 1146 [2023-08-27 04:41:40,377 INFO L136 LiptonReduction]: Total number of compositions: 53 [2023-08-27 04:41:40,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 04:41:40,393 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;@20cab322, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 04:41:40,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-27 04:41:40,395 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 04:41:40,396 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-27 04:41:40,396 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:41:40,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:40,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 04:41:40,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:41:40,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash 7366769, now seen corresponding path program 1 times [2023-08-27 04:41:40,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:40,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758718058] [2023-08-27 04:41:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:40,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:40,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:40,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758718058] [2023-08-27 04:41:40,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758718058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:40,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:41:40,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:41:40,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331987848] [2023-08-27 04:41:40,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:40,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:41:40,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:40,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:41:40,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:41:40,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 123 [2023-08-27 04:41:40,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 33 flow. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-08-27 04:41:40,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:40,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 123 [2023-08-27 04:41:40,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:40,873 INFO L124 PetriNetUnfolderBase]: 26/67 cut-off events. [2023-08-27 04:41:40,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:41:40,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 67 events. 26/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 189 event pairs, 9 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 130. Up to 54 conditions per place. [2023-08-27 04:41:40,876 INFO L140 encePairwiseOnDemand]: 115/123 looper letters, 15 selfloop transitions, 5 changer transitions 4/24 dead transitions. [2023-08-27 04:41:40,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 99 flow [2023-08-27 04:41:40,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:41:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:41:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 246 transitions. [2023-08-27 04:41:40,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-27 04:41:40,888 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 246 transitions. [2023-08-27 04:41:40,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 246 transitions. [2023-08-27 04:41:40,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:40,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 246 transitions. [2023-08-27 04:41:40,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 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) [2023-08-27 04:41:40,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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) [2023-08-27 04:41:40,898 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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) [2023-08-27 04:41:40,900 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 33 flow. Second operand 4 states and 246 transitions. [2023-08-27 04:41:40,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 99 flow [2023-08-27 04:41:40,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 24 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:41:40,903 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 66 flow [2023-08-27 04:41:40,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=66, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2023-08-27 04:41:40,907 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2023-08-27 04:41:40,907 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 66 flow [2023-08-27 04:41:40,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-08-27 04:41:40,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:40,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:41:40,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 04:41:40,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:41:40,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:40,908 INFO L85 PathProgramCache]: Analyzing trace with hash 413654169, now seen corresponding path program 1 times [2023-08-27 04:41:40,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:40,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401713816] [2023-08-27 04:41:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:40,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:40,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:40,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401713816] [2023-08-27 04:41:40,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401713816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:40,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:41:40,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:41:40,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209745603] [2023-08-27 04:41:40,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:40,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:41:40,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:40,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:41:40,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:41:40,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 123 [2023-08-27 04:41:40,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2023-08-27 04:41:40,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:40,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 123 [2023-08-27 04:41:40,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:40,988 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-27 04:41:40,988 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 04:41:40,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 19 events. 0/19 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 32 event pairs, 0 based on Foata normal form. 5/22 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2023-08-27 04:41:40,988 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 8 selfloop transitions, 5 changer transitions 0/16 dead transitions. [2023-08-27 04:41:40,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 16 transitions, 87 flow [2023-08-27 04:41:40,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:41:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:41:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2023-08-27 04:41:40,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257452574525745 [2023-08-27 04:41:40,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 194 transitions. [2023-08-27 04:41:40,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 194 transitions. [2023-08-27 04:41:40,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:40,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 194 transitions. [2023-08-27 04:41:40,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2023-08-27 04:41:40,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2023-08-27 04:41:40,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2023-08-27 04:41:40,994 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 66 flow. Second operand 3 states and 194 transitions. [2023-08-27 04:41:40,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 16 transitions, 87 flow [2023-08-27 04:41:40,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 80 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 04:41:40,995 INFO L231 Difference]: Finished difference. Result has 24 places, 16 transitions, 64 flow [2023-08-27 04:41:40,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2023-08-27 04:41:40,995 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-08-27 04:41:40,996 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 64 flow [2023-08-27 04:41:40,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2023-08-27 04:41:40,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:40,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:41:40,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 04:41:40,996 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:41:40,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:40,997 INFO L85 PathProgramCache]: Analyzing trace with hash 151603115, now seen corresponding path program 1 times [2023-08-27 04:41:40,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:40,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630233233] [2023-08-27 04:41:40,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:40,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:41,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:41,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630233233] [2023-08-27 04:41:41,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630233233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:41,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:41:41,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 04:41:41,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358118997] [2023-08-27 04:41:41,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:41,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 04:41:41,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:41,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 04:41:41,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 04:41:41,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 123 [2023-08-27 04:41:41,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 64 flow. Second operand has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 6 states have internal predecessors, (302), 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) [2023-08-27 04:41:41,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:41,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 123 [2023-08-27 04:41:41,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:41,225 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2023-08-27 04:41:41,225 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 04:41:41,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 26 events. 4/26 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 48 event pairs, 4 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 66. Up to 16 conditions per place. [2023-08-27 04:41:41,226 INFO L140 encePairwiseOnDemand]: 116/123 looper letters, 10 selfloop transitions, 6 changer transitions 2/18 dead transitions. [2023-08-27 04:41:41,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 104 flow [2023-08-27 04:41:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 04:41:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 04:41:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 362 transitions. [2023-08-27 04:41:41,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42044134727061555 [2023-08-27 04:41:41,229 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 362 transitions. [2023-08-27 04:41:41,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 362 transitions. [2023-08-27 04:41:41,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:41,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 362 transitions. [2023-08-27 04:41:41,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 51.714285714285715) internal successors, (362), 7 states have internal predecessors, (362), 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) [2023-08-27 04:41:41,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 123.0) internal successors, (984), 8 states have internal predecessors, (984), 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) [2023-08-27 04:41:41,233 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 123.0) internal successors, (984), 8 states have internal predecessors, (984), 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) [2023-08-27 04:41:41,233 INFO L175 Difference]: Start difference. First operand has 24 places, 16 transitions, 64 flow. Second operand 7 states and 362 transitions. [2023-08-27 04:41:41,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 104 flow [2023-08-27 04:41:41,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:41:41,234 INFO L231 Difference]: Finished difference. Result has 28 places, 15 transitions, 67 flow [2023-08-27 04:41:41,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=67, PETRI_PLACES=28, PETRI_TRANSITIONS=15} [2023-08-27 04:41:41,235 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2023-08-27 04:41:41,235 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 15 transitions, 67 flow [2023-08-27 04:41:41,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 6 states have internal predecessors, (302), 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) [2023-08-27 04:41:41,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:41,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:41:41,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 04:41:41,236 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:41:41,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:41,237 INFO L85 PathProgramCache]: Analyzing trace with hash -67045302, now seen corresponding path program 1 times [2023-08-27 04:41:41,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:41,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279727716] [2023-08-27 04:41:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:41,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:41,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:41,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279727716] [2023-08-27 04:41:41,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279727716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:41,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:41:41,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 04:41:41,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584977959] [2023-08-27 04:41:41,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:41,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 04:41:41,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:41,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 04:41:41,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 04:41:41,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2023-08-27 04:41:41,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 15 transitions, 67 flow. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 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) [2023-08-27 04:41:41,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:41,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2023-08-27 04:41:41,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:41,413 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-08-27 04:41:41,413 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-27 04:41:41,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 20 events. 2/20 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 52. Up to 8 conditions per place. [2023-08-27 04:41:41,414 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 10 selfloop transitions, 6 changer transitions 1/17 dead transitions. [2023-08-27 04:41:41,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 17 transitions, 104 flow [2023-08-27 04:41:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 04:41:41,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 04:41:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 305 transitions. [2023-08-27 04:41:41,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132791327913279 [2023-08-27 04:41:41,416 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 305 transitions. [2023-08-27 04:41:41,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 305 transitions. [2023-08-27 04:41:41,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:41,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 305 transitions. [2023-08-27 04:41:41,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.833333333333336) internal successors, (305), 6 states have internal predecessors, (305), 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) [2023-08-27 04:41:41,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 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) [2023-08-27 04:41:41,419 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 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) [2023-08-27 04:41:41,419 INFO L175 Difference]: Start difference. First operand has 28 places, 15 transitions, 67 flow. Second operand 6 states and 305 transitions. [2023-08-27 04:41:41,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 17 transitions, 104 flow [2023-08-27 04:41:41,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 93 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 04:41:41,421 INFO L231 Difference]: Finished difference. Result has 27 places, 14 transitions, 64 flow [2023-08-27 04:41:41,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=64, PETRI_PLACES=27, PETRI_TRANSITIONS=14} [2023-08-27 04:41:41,423 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2023-08-27 04:41:41,423 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 14 transitions, 64 flow [2023-08-27 04:41:41,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 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) [2023-08-27 04:41:41,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:41,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:41:41,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 04:41:41,424 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:41:41,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:41,425 INFO L85 PathProgramCache]: Analyzing trace with hash -67045291, now seen corresponding path program 1 times [2023-08-27 04:41:41,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:41,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909640064] [2023-08-27 04:41:41,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:41,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:41,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:41,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909640064] [2023-08-27 04:41:41,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909640064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:41,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:41:41,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 04:41:41,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045927806] [2023-08-27 04:41:41,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:41,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 04:41:41,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:41,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 04:41:41,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 04:41:41,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2023-08-27 04:41:41,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 14 transitions, 64 flow. Second operand has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 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) [2023-08-27 04:41:41,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:41,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2023-08-27 04:41:41,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:41,659 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2023-08-27 04:41:41,659 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-27 04:41:41,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 16 events. 1/16 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 44. Up to 6 conditions per place. [2023-08-27 04:41:41,660 INFO L140 encePairwiseOnDemand]: 115/123 looper letters, 4 selfloop transitions, 4 changer transitions 7/15 dead transitions. [2023-08-27 04:41:41,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 15 transitions, 95 flow [2023-08-27 04:41:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 04:41:41,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 04:41:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 400 transitions. [2023-08-27 04:41:41,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2023-08-27 04:41:41,664 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 400 transitions. [2023-08-27 04:41:41,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 400 transitions. [2023-08-27 04:41:41,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:41,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 400 transitions. [2023-08-27 04:41:41,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 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) [2023-08-27 04:41:41,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 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) [2023-08-27 04:41:41,668 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 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) [2023-08-27 04:41:41,668 INFO L175 Difference]: Start difference. First operand has 27 places, 14 transitions, 64 flow. Second operand 8 states and 400 transitions. [2023-08-27 04:41:41,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 15 transitions, 95 flow [2023-08-27 04:41:41,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 15 transitions, 83 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 04:41:41,670 INFO L231 Difference]: Finished difference. Result has 27 places, 8 transitions, 38 flow [2023-08-27 04:41:41,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=38, PETRI_PLACES=27, PETRI_TRANSITIONS=8} [2023-08-27 04:41:41,672 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2023-08-27 04:41:41,672 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 8 transitions, 38 flow [2023-08-27 04:41:41,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 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) [2023-08-27 04:41:41,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:41,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:41:41,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 04:41:41,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:41:41,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash 151603113, now seen corresponding path program 1 times [2023-08-27 04:41:41,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:41,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704733575] [2023-08-27 04:41:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:41,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:41,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:41,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704733575] [2023-08-27 04:41:41,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704733575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:41,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:41:41,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 04:41:41,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344697061] [2023-08-27 04:41:41,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:41,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 04:41:41,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:41,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 04:41:41,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 04:41:41,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 123 [2023-08-27 04:41:41,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 8 transitions, 38 flow. Second operand has 5 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 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) [2023-08-27 04:41:41,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:41,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 123 [2023-08-27 04:41:41,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:41,819 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-27 04:41:41,819 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 04:41:41,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 8 events. 0/8 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-27 04:41:41,820 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-27 04:41:41,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 8 transitions, 51 flow [2023-08-27 04:41:41,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 04:41:41,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 04:41:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 254 transitions. [2023-08-27 04:41:41,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41300813008130083 [2023-08-27 04:41:41,821 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 254 transitions. [2023-08-27 04:41:41,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 254 transitions. [2023-08-27 04:41:41,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:41,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 254 transitions. [2023-08-27 04:41:41,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.8) internal successors, (254), 5 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) [2023-08-27 04:41:41,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 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) [2023-08-27 04:41:41,824 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 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) [2023-08-27 04:41:41,824 INFO L175 Difference]: Start difference. First operand has 27 places, 8 transitions, 38 flow. Second operand 5 states and 254 transitions. [2023-08-27 04:41:41,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 8 transitions, 51 flow [2023-08-27 04:41:41,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 8 transitions, 39 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 04:41:41,825 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-08-27 04:41:41,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=12, 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=5, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-08-27 04:41:41,825 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -3 predicate places. [2023-08-27 04:41:41,826 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-08-27 04:41:41,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 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) [2023-08-27 04:41:41,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2023-08-27 04:41:41,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2023-08-27 04:41:41,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-27 04:41:41,829 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2023-08-27 04:41:41,829 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2023-08-27 04:41:41,829 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2023-08-27 04:41:41,829 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2023-08-27 04:41:41,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 04:41:41,830 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-27 04:41:41,834 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 04:41:41,834 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 04:41:41,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:41:41 BasicIcfg [2023-08-27 04:41:41,837 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 04:41:41,837 INFO L158 Benchmark]: Toolchain (without parser) took 4776.09ms. Allocated memory was 358.6MB in the beginning and 461.4MB in the end (delta: 102.8MB). Free memory was 333.2MB in the beginning and 392.2MB in the end (delta: -59.1MB). Peak memory consumption was 45.7MB. Max. memory is 16.0GB. [2023-08-27 04:41:41,838 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 358.6MB. Free memory was 336.1MB in the beginning and 335.9MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 04:41:41,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 541.30ms. Allocated memory is still 358.6MB. Free memory was 333.2MB in the beginning and 306.1MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-27 04:41:41,838 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.36ms. Allocated memory is still 358.6MB. Free memory was 306.1MB in the beginning and 303.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 04:41:41,839 INFO L158 Benchmark]: Boogie Preprocessor took 24.16ms. Allocated memory is still 358.6MB. Free memory was 303.2MB in the beginning and 301.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 04:41:41,839 INFO L158 Benchmark]: RCFGBuilder took 364.50ms. Allocated memory is still 358.6MB. Free memory was 301.9MB in the beginning and 288.0MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 04:41:41,839 INFO L158 Benchmark]: TraceAbstraction took 3803.56ms. Allocated memory was 358.6MB in the beginning and 461.4MB in the end (delta: 102.8MB). Free memory was 287.2MB in the beginning and 392.2MB in the end (delta: -105.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 04:41:41,841 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 358.6MB. Free memory was 336.1MB in the beginning and 335.9MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 541.30ms. Allocated memory is still 358.6MB. Free memory was 333.2MB in the beginning and 306.1MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.36ms. Allocated memory is still 358.6MB. Free memory was 306.1MB in the beginning and 303.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.16ms. Allocated memory is still 358.6MB. Free memory was 303.2MB in the beginning and 301.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 364.50ms. Allocated memory is still 358.6MB. Free memory was 301.9MB in the beginning and 288.0MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3803.56ms. Allocated memory was 358.6MB in the beginning and 461.4MB in the end (delta: 102.8MB). Free memory was 287.2MB in the beginning and 392.2MB in the end (delta: -105.0MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 736]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [736] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 66 PlacesBefore, 19 PlacesAfterwards, 62 TransitionsBefore, 15 TransitionsAfterwards, 448 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, 1146 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 604, independent: 484, independent conditional: 0, independent unconditional: 484, dependent: 120, dependent conditional: 0, dependent unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 256, independent: 239, independent conditional: 0, independent unconditional: 239, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 604, independent: 245, independent conditional: 0, independent unconditional: 245, dependent: 103, dependent conditional: 0, dependent unconditional: 103, unknown: 256, unknown conditional: 0, unknown unconditional: 256] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 937]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 937]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 926]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 926]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 89 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 215 IncrementalHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 2 mSDtfsCounter, 215 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=3, InterpolantAutomatonStates: 33, 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, 0.8s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 220 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 04:41:41,856 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...