/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/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:42:40,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:42:40,746 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 02:42:40,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:42:40,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:42:40,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:42:40,771 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:42:40,771 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:42:40,771 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:42:40,772 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:42:40,772 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:42:40,773 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:42:40,773 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:42:40,773 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:42:40,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:42:40,774 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:42:40,774 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:42:40,775 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:42:40,775 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:42:40,775 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:42:40,775 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:42:40,782 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:42:40,782 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:42:40,782 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:42:40,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:42:40,783 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:42:40,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:42:40,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:42:40,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:42:40,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:42:40,785 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:42:40,785 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:42:40,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:42:40,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:42:40,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:42:40,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:42:41,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:42:41,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:42:41,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:42:41,130 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:42:41,130 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:42:41,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2023-08-27 02:42:42,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:42:42,601 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:42:42,601 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2023-08-27 02:42:42,617 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc897522a/c01c52c3ff5f48ea86a65eb430fdcbca/FLAGe9e50704b [2023-08-27 02:42:42,633 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc897522a/c01c52c3ff5f48ea86a65eb430fdcbca [2023-08-27 02:42:42,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:42:42,639 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:42:42,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:42:42,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:42:42,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:42:42,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:42:42" (1/1) ... [2023-08-27 02:42:42,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5627f4a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:42, skipping insertion in model container [2023-08-27 02:42:42,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:42:42" (1/1) ... [2023-08-27 02:42:42,701 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:42:42,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:42:42,996 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:42:43,026 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-27 02:42:43,028 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-27 02:42:43,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:42:43,095 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:42:43,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:43 WrapperNode [2023-08-27 02:42:43,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:42:43,099 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:42:43,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:42:43,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:42:43,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:43" (1/1) ... [2023-08-27 02:42:43,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:43" (1/1) ... [2023-08-27 02:42:43,158 INFO L138 Inliner]: procedures = 169, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2023-08-27 02:42:43,158 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:42:43,159 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:42:43,159 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:42:43,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:42:43,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:43" (1/1) ... [2023-08-27 02:42:43,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:43" (1/1) ... [2023-08-27 02:42:43,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:43" (1/1) ... [2023-08-27 02:42:43,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:43" (1/1) ... [2023-08-27 02:42:43,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:43" (1/1) ... [2023-08-27 02:42:43,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:43" (1/1) ... [2023-08-27 02:42:43,194 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:43" (1/1) ... [2023-08-27 02:42:43,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:43" (1/1) ... [2023-08-27 02:42:43,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:42:43,198 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:42:43,198 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:42:43,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:42:43,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:43" (1/1) ... [2023-08-27 02:42:43,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:42:43,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:42:43,238 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 02:42:43,264 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 02:42:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:42:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 02:42:43,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 02:42:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 02:42:43,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 02:42:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 02:42:43,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 02:42:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:42:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 02:42:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:42:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:42:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:42:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:42:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:42:43,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:42:43,281 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 02:42:43,429 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:42:43,432 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:42:43,646 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:42:43,655 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:42:43,655 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 02:42:43,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:42:43 BoogieIcfgContainer [2023-08-27 02:42:43,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:42:43,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:42:43,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:42:43,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:42:43,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:42:42" (1/3) ... [2023-08-27 02:42:43,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ddbbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:42:43, skipping insertion in model container [2023-08-27 02:42:43,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:43" (2/3) ... [2023-08-27 02:42:43,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ddbbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:42:43, skipping insertion in model container [2023-08-27 02:42:43,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:42:43" (3/3) ... [2023-08-27 02:42:43,666 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2023-08-27 02:42:43,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:42:43,682 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-27 02:42:43,682 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:42:43,756 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 02:42:43,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 99 transitions, 222 flow [2023-08-27 02:42:43,861 INFO L124 PetriNetUnfolderBase]: 2/96 cut-off events. [2023-08-27 02:42:43,862 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 02:42:43,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 2/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-27 02:42:43,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 99 transitions, 222 flow [2023-08-27 02:42:43,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 85 transitions, 185 flow [2023-08-27 02:42:43,876 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:42:43,889 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 85 transitions, 185 flow [2023-08-27 02:42:43,896 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 85 transitions, 185 flow [2023-08-27 02:42:43,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-08-27 02:42:43,937 INFO L124 PetriNetUnfolderBase]: 2/85 cut-off events. [2023-08-27 02:42:43,938 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:42:43,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 85 events. 2/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-27 02:42:43,941 INFO L119 LiptonReduction]: Number of co-enabled transitions 1930 [2023-08-27 02:42:46,346 INFO L134 LiptonReduction]: Checked pairs total: 5541 [2023-08-27 02:42:46,346 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-27 02:42:46,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:42:46,365 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;@53f08aaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:42:46,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-27 02:42:46,369 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:42:46,369 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-27 02:42:46,369 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:42:46,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:42:46,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:42:46,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 02:42:46,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:42:46,375 INFO L85 PathProgramCache]: Analyzing trace with hash 10552522, now seen corresponding path program 1 times [2023-08-27 02:42:46,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:42:46,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006726609] [2023-08-27 02:42:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:42:46,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:42:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:42:46,699 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 02:42:46,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:42:46,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006726609] [2023-08-27 02:42:46,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006726609] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:42:46,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:42:46,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:42:46,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850746681] [2023-08-27 02:42:46,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:42:46,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:42:46,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:42:46,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:42:46,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:42:46,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 164 [2023-08-27 02:42:46,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 02:42:46,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:42:46,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 164 [2023-08-27 02:42:46,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:42:46,952 INFO L124 PetriNetUnfolderBase]: 937/1470 cut-off events. [2023-08-27 02:42:46,952 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-08-27 02:42:46,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3078 conditions, 1470 events. 937/1470 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6326 event pairs, 367 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 2558. Up to 1145 conditions per place. [2023-08-27 02:42:46,981 INFO L140 encePairwiseOnDemand]: 155/164 looper letters, 40 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-27 02:42:46,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 193 flow [2023-08-27 02:42:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:42:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:42:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-27 02:42:46,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5894308943089431 [2023-08-27 02:42:46,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-27 02:42:47,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-27 02:42:47,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:42:47,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-27 02:42:47,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 02:42:47,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 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 02:42:47,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 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 02:42:47,017 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 75 flow. Second operand 3 states and 290 transitions. [2023-08-27 02:42:47,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 193 flow [2023-08-27 02:42:47,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 181 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 02:42:47,025 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 89 flow [2023-08-27 02:42:47,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-27 02:42:47,029 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-08-27 02:42:47,030 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 89 flow [2023-08-27 02:42:47,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 02:42:47,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:42:47,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:42:47,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:42:47,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 02:42:47,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:42:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1511434688, now seen corresponding path program 1 times [2023-08-27 02:42:47,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:42:47,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327957133] [2023-08-27 02:42:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:42:47,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:42:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:42:47,120 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 02:42:47,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:42:47,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327957133] [2023-08-27 02:42:47,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327957133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:42:47,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:42:47,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:42:47,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593597981] [2023-08-27 02:42:47,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:42:47,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:42:47,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:42:47,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:42:47,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:42:47,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 164 [2023-08-27 02:42:47,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 02:42:47,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:42:47,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 164 [2023-08-27 02:42:47,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:42:47,201 INFO L124 PetriNetUnfolderBase]: 126/345 cut-off events. [2023-08-27 02:42:47,201 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 02:42:47,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 345 events. 126/345 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1719 event pairs, 31 based on Foata normal form. 78/417 useless extension candidates. Maximal degree in co-relation 359. Up to 211 conditions per place. [2023-08-27 02:42:47,203 INFO L140 encePairwiseOnDemand]: 158/164 looper letters, 28 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2023-08-27 02:42:47,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 180 flow [2023-08-27 02:42:47,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:42:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:42:47,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-08-27 02:42:47,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426829268292683 [2023-08-27 02:42:47,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-08-27 02:42:47,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-08-27 02:42:47,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:42:47,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-08-27 02:42:47,206 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) [2023-08-27 02:42:47,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 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 02:42:47,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 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 02:42:47,208 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 89 flow. Second operand 3 states and 267 transitions. [2023-08-27 02:42:47,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 180 flow [2023-08-27 02:42:47,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:42:47,210 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 98 flow [2023-08-27 02:42:47,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-08-27 02:42:47,210 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-08-27 02:42:47,211 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 98 flow [2023-08-27 02:42:47,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 02:42:47,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:42:47,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:42:47,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:42:47,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 02:42:47,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:42:47,212 INFO L85 PathProgramCache]: Analyzing trace with hash -945348607, now seen corresponding path program 1 times [2023-08-27 02:42:47,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:42:47,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893688413] [2023-08-27 02:42:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:42:47,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:42:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:42:47,314 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 02:42:47,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:42:47,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893688413] [2023-08-27 02:42:47,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893688413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:42:47,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:42:47,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:42:47,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209728924] [2023-08-27 02:42:47,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:42:47,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:42:47,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:42:47,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:42:47,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:42:47,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 164 [2023-08-27 02:42:47,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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 02:42:47,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:42:47,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 164 [2023-08-27 02:42:47,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:42:47,459 INFO L124 PetriNetUnfolderBase]: 176/405 cut-off events. [2023-08-27 02:42:47,459 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-08-27 02:42:47,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 405 events. 176/405 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1690 event pairs, 71 based on Foata normal form. 10/415 useless extension candidates. Maximal degree in co-relation 290. Up to 275 conditions per place. [2023-08-27 02:42:47,462 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 50 selfloop transitions, 6 changer transitions 2/58 dead transitions. [2023-08-27 02:42:47,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 58 transitions, 292 flow [2023-08-27 02:42:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:42:47,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:42:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 435 transitions. [2023-08-27 02:42:47,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304878048780488 [2023-08-27 02:42:47,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 435 transitions. [2023-08-27 02:42:47,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 435 transitions. [2023-08-27 02:42:47,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:42:47,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 435 transitions. [2023-08-27 02:42:47,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 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 02:42:47,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 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 02:42:47,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 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 02:42:47,469 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 98 flow. Second operand 5 states and 435 transitions. [2023-08-27 02:42:47,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 58 transitions, 292 flow [2023-08-27 02:42:47,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:42:47,473 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 112 flow [2023-08-27 02:42:47,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-08-27 02:42:47,474 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-08-27 02:42:47,477 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 112 flow [2023-08-27 02:42:47,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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 02:42:47,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:42:47,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:42:47,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:42:47,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 02:42:47,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:42:47,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1641407607, now seen corresponding path program 1 times [2023-08-27 02:42:47,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:42:47,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726936811] [2023-08-27 02:42:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:42:47,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:42:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:42:47,593 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 02:42:47,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:42:47,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726936811] [2023-08-27 02:42:47,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726936811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:42:47,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:42:47,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:42:47,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846907445] [2023-08-27 02:42:47,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:42:47,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:42:47,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:42:47,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:42:47,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:42:47,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 164 [2023-08-27 02:42:47,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 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 02:42:47,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:42:47,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 164 [2023-08-27 02:42:47,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:42:47,710 INFO L124 PetriNetUnfolderBase]: 165/380 cut-off events. [2023-08-27 02:42:47,711 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-08-27 02:42:47,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 380 events. 165/380 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1551 event pairs, 51 based on Foata normal form. 14/394 useless extension candidates. Maximal degree in co-relation 758. Up to 203 conditions per place. [2023-08-27 02:42:47,713 INFO L140 encePairwiseOnDemand]: 158/164 looper letters, 47 selfloop transitions, 5 changer transitions 3/55 dead transitions. [2023-08-27 02:42:47,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 286 flow [2023-08-27 02:42:47,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:42:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:42:47,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 431 transitions. [2023-08-27 02:42:47,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525609756097561 [2023-08-27 02:42:47,715 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 431 transitions. [2023-08-27 02:42:47,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 431 transitions. [2023-08-27 02:42:47,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:42:47,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 431 transitions. [2023-08-27 02:42:47,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:42:47,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 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 02:42:47,719 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 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 02:42:47,719 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 112 flow. Second operand 5 states and 431 transitions. [2023-08-27 02:42:47,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 286 flow [2023-08-27 02:42:47,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 281 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 02:42:47,723 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 117 flow [2023-08-27 02:42:47,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-08-27 02:42:47,724 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-27 02:42:47,725 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 117 flow [2023-08-27 02:42:47,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 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 02:42:47,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:42:47,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:42:47,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 02:42:47,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 02:42:47,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:42:47,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1824938196, now seen corresponding path program 1 times [2023-08-27 02:42:47,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:42:47,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740149155] [2023-08-27 02:42:47,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:42:47,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:42:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:42:47,791 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 02:42:47,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:42:47,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740149155] [2023-08-27 02:42:47,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740149155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:42:47,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:42:47,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:42:47,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268560235] [2023-08-27 02:42:47,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:42:47,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:42:47,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:42:47,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:42:47,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:42:47,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 164 [2023-08-27 02:42:47,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 02:42:47,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:42:47,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 164 [2023-08-27 02:42:47,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:42:47,897 INFO L124 PetriNetUnfolderBase]: 170/405 cut-off events. [2023-08-27 02:42:47,902 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2023-08-27 02:42:47,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1077 conditions, 405 events. 170/405 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1731 event pairs, 61 based on Foata normal form. 8/413 useless extension candidates. Maximal degree in co-relation 850. Up to 205 conditions per place. [2023-08-27 02:42:47,905 INFO L140 encePairwiseOnDemand]: 158/164 looper letters, 35 selfloop transitions, 4 changer transitions 15/54 dead transitions. [2023-08-27 02:42:47,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 292 flow [2023-08-27 02:42:47,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:42:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:42:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2023-08-27 02:42:47,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5716463414634146 [2023-08-27 02:42:47,906 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2023-08-27 02:42:47,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2023-08-27 02:42:47,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:42:47,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2023-08-27 02:42:47,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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 02:42:47,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 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 02:42:47,910 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 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 02:42:47,910 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 117 flow. Second operand 4 states and 375 transitions. [2023-08-27 02:42:47,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 292 flow [2023-08-27 02:42:47,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 279 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 02:42:47,913 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 112 flow [2023-08-27 02:42:47,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2023-08-27 02:42:47,916 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-27 02:42:47,916 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 112 flow [2023-08-27 02:42:47,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 02:42:47,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:42:47,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:42:47,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 02:42:47,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 02:42:47,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:42:47,918 INFO L85 PathProgramCache]: Analyzing trace with hash 643317342, now seen corresponding path program 1 times [2023-08-27 02:42:47,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:42:47,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741469914] [2023-08-27 02:42:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:42:47,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:42:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 02:42:47,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 02:42:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 02:42:47,986 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 02:42:47,987 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 02:42:47,988 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONASSERT (12 of 13 remaining) [2023-08-27 02:42:47,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-27 02:42:47,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-27 02:42:47,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-27 02:42:47,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-27 02:42:47,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONASSERT (7 of 13 remaining) [2023-08-27 02:42:47,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2023-08-27 02:42:47,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2023-08-27 02:42:47,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2023-08-27 02:42:47,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-27 02:42:47,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-27 02:42:47,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-27 02:42:47,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-27 02:42:47,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:42:47,995 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-27 02:42:48,000 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:42:48,001 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:42:48,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:42:48 BasicIcfg [2023-08-27 02:42:48,045 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:42:48,045 INFO L158 Benchmark]: Toolchain (without parser) took 5406.22ms. Allocated memory was 360.7MB in the beginning and 463.5MB in the end (delta: 102.8MB). Free memory was 335.3MB in the beginning and 267.3MB in the end (delta: 68.0MB). Peak memory consumption was 172.3MB. Max. memory is 16.0GB. [2023-08-27 02:42:48,046 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 360.7MB. Free memory is still 338.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:42:48,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 455.00ms. Allocated memory is still 360.7MB. Free memory was 335.3MB in the beginning and 315.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 02:42:48,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.72ms. Allocated memory is still 360.7MB. Free memory was 315.3MB in the beginning and 313.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:42:48,050 INFO L158 Benchmark]: Boogie Preprocessor took 38.60ms. Allocated memory is still 360.7MB. Free memory was 313.2MB in the beginning and 312.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:42:48,050 INFO L158 Benchmark]: RCFGBuilder took 459.66ms. Allocated memory is still 360.7MB. Free memory was 312.2MB in the beginning and 297.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 02:42:48,051 INFO L158 Benchmark]: TraceAbstraction took 4385.05ms. Allocated memory was 360.7MB in the beginning and 463.5MB in the end (delta: 102.8MB). Free memory was 296.5MB in the beginning and 267.3MB in the end (delta: 29.2MB). Peak memory consumption was 134.5MB. Max. memory is 16.0GB. [2023-08-27 02:42:48,052 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 360.7MB. Free memory is still 338.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 455.00ms. Allocated memory is still 360.7MB. Free memory was 335.3MB in the beginning and 315.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.72ms. Allocated memory is still 360.7MB. Free memory was 315.3MB in the beginning and 313.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.60ms. Allocated memory is still 360.7MB. Free memory was 313.2MB in the beginning and 312.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 459.66ms. Allocated memory is still 360.7MB. Free memory was 312.2MB in the beginning and 297.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4385.05ms. Allocated memory was 360.7MB in the beginning and 463.5MB in the end (delta: 102.8MB). Free memory was 296.5MB in the beginning and 267.3MB in the end (delta: 29.2MB). Peak memory consumption was 134.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 93 PlacesBefore, 39 PlacesAfterwards, 85 TransitionsBefore, 30 TransitionsAfterwards, 1930 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 65 TotalNumberOfCompositions, 5541 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2832, independent: 2638, independent conditional: 0, independent unconditional: 2638, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1107, independent: 1068, independent conditional: 0, independent unconditional: 1068, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2832, independent: 1570, independent conditional: 0, independent unconditional: 1570, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 1107, unknown conditional: 0, unknown unconditional: 1107] , Statistics on independence cache: Total cache size (in pairs): 155, Positive cache size: 139, Positive conditional cache size: 0, Positive unconditional cache size: 139, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 20]: assertion can be violated assertion can be violated We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, pthread_create(&t1, 0, thread1, 0)=0, t1={5:0}, t2={7:0}, t3={6:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t2, 0, thread2, 0)=1, t1={5:0}, t2={7:0}, t3={6:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t3, 0, thread3, 0)=2, t1={5:0}, t2={7:0}, t3={6:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=2, mutex={3:0}] [L716] 2 return 0; [L707] 1 data++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L709] 1 return 0; [L721] COND TRUE 3 data >= 3 [L722] CALL 3 reach_error() [L20] COND FALSE 3 !(0) [L20] 3 __assert_fail ("0", "lazy01.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 707]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 141 locations, 13 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: 4.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 415 IncrementalHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 1 mSDtfsCounter, 415 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=4, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-27 02:42:48,070 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...