/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:53:45,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:53:45,815 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 22:53:45,818 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:53:45,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:53:45,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:53:45,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:53:45,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:53:45,843 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:53:45,843 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:53:45,843 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:53:45,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:53:45,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:53:45,844 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:53:45,844 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:53:45,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:53:45,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:53:45,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:53:45,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:53:45,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:53:45,845 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:53:45,850 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:53:45,850 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:53:45,851 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:53:45,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:53:45,851 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:53:45,851 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:53:45,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:53:45,852 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:53:45,852 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:53:45,852 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:53:45,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:53:45,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:53:45,857 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:53:45,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:53:45,857 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:53:46,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:53:46,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:53:46,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:53:46,192 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:53:46,192 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:53:46,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-26 22:53:47,270 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:53:47,449 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:53:47,449 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-26 22:53:47,463 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e11e509b/c7171a21c82f4e75b725b05dc393308f/FLAG39ea8a2a5 [2023-08-26 22:53:47,473 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e11e509b/c7171a21c82f4e75b725b05dc393308f [2023-08-26 22:53:47,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:53:47,478 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:53:47,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:53:47,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:53:47,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:53:47,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:53:47" (1/1) ... [2023-08-26 22:53:47,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af19006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47, skipping insertion in model container [2023-08-26 22:53:47,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:53:47" (1/1) ... [2023-08-26 22:53:47,529 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:53:47,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:53:47,932 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:53:47,941 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 22:53:47,942 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 22:53:47,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:53:47,998 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:53:48,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47 WrapperNode [2023-08-26 22:53:48,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:53:48,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:53:48,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:53:48,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:53:48,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47" (1/1) ... [2023-08-26 22:53:48,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47" (1/1) ... [2023-08-26 22:53:48,036 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 254 [2023-08-26 22:53:48,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:53:48,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:53:48,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:53:48,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:53:48,042 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47" (1/1) ... [2023-08-26 22:53:48,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47" (1/1) ... [2023-08-26 22:53:48,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47" (1/1) ... [2023-08-26 22:53:48,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47" (1/1) ... [2023-08-26 22:53:48,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47" (1/1) ... [2023-08-26 22:53:48,054 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47" (1/1) ... [2023-08-26 22:53:48,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47" (1/1) ... [2023-08-26 22:53:48,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47" (1/1) ... [2023-08-26 22:53:48,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:53:48,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:53:48,059 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:53:48,059 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:53:48,059 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47" (1/1) ... [2023-08-26 22:53:48,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:53:48,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:53:48,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 22:53:48,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 22:53:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:53:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-26 22:53:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-26 22:53:48,118 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-26 22:53:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:53:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:53:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-26 22:53:48,119 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-26 22:53:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:53:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:53:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 22:53:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:53:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 22:53:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:53:48,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:53:48,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:53:48,121 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:53:48,234 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:53:48,236 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:53:48,557 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:53:48,563 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:53:48,563 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-26 22:53:48,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:53:48 BoogieIcfgContainer [2023-08-26 22:53:48,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:53:48,566 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:53:48,566 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:53:48,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:53:48,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:53:47" (1/3) ... [2023-08-26 22:53:48,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6834276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:53:48, skipping insertion in model container [2023-08-26 22:53:48,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:53:47" (2/3) ... [2023-08-26 22:53:48,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6834276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:53:48, skipping insertion in model container [2023-08-26 22:53:48,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:53:48" (3/3) ... [2023-08-26 22:53:48,570 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-08-26 22:53:48,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:53:48,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-08-26 22:53:48,580 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:53:48,677 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 22:53:48,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 270 transitions, 562 flow [2023-08-26 22:53:48,850 INFO L124 PetriNetUnfolderBase]: 56/514 cut-off events. [2023-08-26 22:53:48,850 INFO L125 PetriNetUnfolderBase]: For 8/15 co-relation queries the response was YES. [2023-08-26 22:53:48,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 514 events. 56/514 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2184 event pairs, 0 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2023-08-26 22:53:48,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 270 transitions, 562 flow [2023-08-26 22:53:48,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 270 transitions, 562 flow [2023-08-26 22:53:48,871 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:53:48,876 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 270 transitions, 562 flow [2023-08-26 22:53:48,878 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 270 transitions, 562 flow [2023-08-26 22:53:48,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 270 transitions, 562 flow [2023-08-26 22:53:48,941 INFO L124 PetriNetUnfolderBase]: 56/514 cut-off events. [2023-08-26 22:53:48,941 INFO L125 PetriNetUnfolderBase]: For 8/15 co-relation queries the response was YES. [2023-08-26 22:53:48,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 514 events. 56/514 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2184 event pairs, 0 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2023-08-26 22:53:48,954 INFO L119 LiptonReduction]: Number of co-enabled transitions 22552 [2023-08-26 22:53:55,344 INFO L134 LiptonReduction]: Checked pairs total: 36528 [2023-08-26 22:53:55,344 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-08-26 22:53:55,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:53:55,357 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;@4793b204, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:53:55,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-26 22:53:55,358 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:53:55,359 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-08-26 22:53:55,359 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:53:55,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:53:55,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 22:53:55,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:53:55,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:53:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash 33938, now seen corresponding path program 1 times [2023-08-26 22:53:55,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:53:55,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388752892] [2023-08-26 22:53:55,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:53:55,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:53:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:53:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:53:55,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:53:55,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388752892] [2023-08-26 22:53:55,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388752892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:53:55,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:53:55,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:53:55,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526948195] [2023-08-26 22:53:55,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:53:55,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:53:55,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:53:55,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:53:55,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:53:55,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 511 [2023-08-26 22:53:55,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 83 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:55,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:53:55,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 511 [2023-08-26 22:53:55,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:53:56,341 INFO L124 PetriNetUnfolderBase]: 5193/8550 cut-off events. [2023-08-26 22:53:56,341 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-08-26 22:53:56,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16819 conditions, 8550 events. 5193/8550 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 50887 event pairs, 4888 based on Foata normal form. 232/6494 useless extension candidates. Maximal degree in co-relation 14924. Up to 8167 conditions per place. [2023-08-26 22:53:56,370 INFO L140 encePairwiseOnDemand]: 495/511 looper letters, 63 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-26 22:53:56,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 296 flow [2023-08-26 22:53:56,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:53:56,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:53:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 788 transitions. [2023-08-26 22:53:56,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5140247879973907 [2023-08-26 22:53:56,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 788 transitions. [2023-08-26 22:53:56,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 788 transitions. [2023-08-26 22:53:56,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:53:56,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 788 transitions. [2023-08-26 22:53:56,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:56,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:56,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:56,393 INFO L175 Difference]: Start difference. First operand has 70 places, 83 transitions, 188 flow. Second operand 3 states and 788 transitions. [2023-08-26 22:53:56,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 296 flow [2023-08-26 22:53:56,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 72 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:53:56,403 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 178 flow [2023-08-26 22:53:56,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-08-26 22:53:56,407 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2023-08-26 22:53:56,407 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 178 flow [2023-08-26 22:53:56,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:56,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:53:56,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 22:53:56,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:53:56,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:53:56,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:53:56,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1053528, now seen corresponding path program 1 times [2023-08-26 22:53:56,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:53:56,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420156172] [2023-08-26 22:53:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:53:56,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:53:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:53:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:53:56,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:53:56,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420156172] [2023-08-26 22:53:56,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420156172] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:53:56,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:53:56,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:53:56,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507277542] [2023-08-26 22:53:56,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:53:56,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:53:56,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:53:56,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:53:56,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:53:56,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 511 [2023-08-26 22:53:56,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:56,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:53:56,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 511 [2023-08-26 22:53:56,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:53:57,133 INFO L124 PetriNetUnfolderBase]: 5193/8549 cut-off events. [2023-08-26 22:53:57,133 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-08-26 22:53:57,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16824 conditions, 8549 events. 5193/8549 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 50920 event pairs, 4888 based on Foata normal form. 0/6262 useless extension candidates. Maximal degree in co-relation 16811. Up to 8164 conditions per place. [2023-08-26 22:53:57,176 INFO L140 encePairwiseOnDemand]: 508/511 looper letters, 62 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-26 22:53:57,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 71 transitions, 302 flow [2023-08-26 22:53:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:53:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:53:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2023-08-26 22:53:57,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035877364644488 [2023-08-26 22:53:57,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2023-08-26 22:53:57,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2023-08-26 22:53:57,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:53:57,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2023-08-26 22:53:57,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:57,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:57,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:57,185 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 178 flow. Second operand 3 states and 772 transitions. [2023-08-26 22:53:57,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 71 transitions, 302 flow [2023-08-26 22:53:57,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 71 transitions, 298 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 22:53:57,190 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 174 flow [2023-08-26 22:53:57,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2023-08-26 22:53:57,191 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2023-08-26 22:53:57,191 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 174 flow [2023-08-26 22:53:57,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:57,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:53:57,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:53:57,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:53:57,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:53:57,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:53:57,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1320588820, now seen corresponding path program 1 times [2023-08-26 22:53:57,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:53:57,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763821901] [2023-08-26 22:53:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:53:57,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:53:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:53:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:53:57,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:53:57,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763821901] [2023-08-26 22:53:57,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763821901] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:53:57,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127714584] [2023-08-26 22:53:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:53:57,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:53:57,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:53:57,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:53:57,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 22:53:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:53:57,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:53:57,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:53:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:53:57,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:53:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:53:57,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127714584] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:53:57,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:53:57,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:53:57,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645956756] [2023-08-26 22:53:57,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:53:57,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:53:57,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:53:57,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:53:57,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:53:57,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 511 [2023-08-26 22:53:57,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:57,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:53:57,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 511 [2023-08-26 22:53:57,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:53:57,996 INFO L124 PetriNetUnfolderBase]: 5193/8552 cut-off events. [2023-08-26 22:53:57,996 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-08-26 22:53:58,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16833 conditions, 8552 events. 5193/8552 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 50886 event pairs, 4888 based on Foata normal form. 3/6269 useless extension candidates. Maximal degree in co-relation 16805. Up to 8166 conditions per place. [2023-08-26 22:53:58,027 INFO L140 encePairwiseOnDemand]: 508/511 looper letters, 62 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2023-08-26 22:53:58,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 74 transitions, 320 flow [2023-08-26 22:53:58,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:53:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:53:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1486 transitions. [2023-08-26 22:53:58,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846705805609915 [2023-08-26 22:53:58,030 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1486 transitions. [2023-08-26 22:53:58,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1486 transitions. [2023-08-26 22:53:58,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:53:58,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1486 transitions. [2023-08-26 22:53:58,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.66666666666666) internal successors, (1486), 6 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:58,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 511.0) internal successors, (3577), 7 states have internal predecessors, (3577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:58,037 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 511.0) internal successors, (3577), 7 states have internal predecessors, (3577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:58,037 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 174 flow. Second operand 6 states and 1486 transitions. [2023-08-26 22:53:58,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 74 transitions, 320 flow [2023-08-26 22:53:58,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:53:58,041 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 206 flow [2023-08-26 22:53:58,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=206, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2023-08-26 22:53:58,041 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2023-08-26 22:53:58,042 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 206 flow [2023-08-26 22:53:58,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:58,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:53:58,043 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-26 22:53:58,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 22:53:58,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:53:58,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:53:58,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:53:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash -162729702, now seen corresponding path program 2 times [2023-08-26 22:53:58,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:53:58,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079961724] [2023-08-26 22:53:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:53:58,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:53:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:53:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 22:53:58,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:53:58,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079961724] [2023-08-26 22:53:58,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079961724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:53:58,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:53:58,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:53:58,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909079415] [2023-08-26 22:53:58,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:53:58,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:53:58,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:53:58,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:53:58,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:53:58,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 511 [2023-08-26 22:53:58,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:58,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:53:58,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 511 [2023-08-26 22:53:58,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:53:58,892 INFO L124 PetriNetUnfolderBase]: 5045/8162 cut-off events. [2023-08-26 22:53:58,892 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2023-08-26 22:53:58,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16178 conditions, 8162 events. 5045/8162 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 47821 event pairs, 2738 based on Foata normal form. 0/6029 useless extension candidates. Maximal degree in co-relation 16143. Up to 7871 conditions per place. [2023-08-26 22:53:58,918 INFO L140 encePairwiseOnDemand]: 506/511 looper letters, 72 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-26 22:53:58,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 81 transitions, 368 flow [2023-08-26 22:53:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:53:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:53:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 784 transitions. [2023-08-26 22:53:58,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2023-08-26 22:53:58,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 784 transitions. [2023-08-26 22:53:58,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 784 transitions. [2023-08-26 22:53:58,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:53:58,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 784 transitions. [2023-08-26 22:53:58,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:58,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:58,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:58,925 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 206 flow. Second operand 3 states and 784 transitions. [2023-08-26 22:53:58,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 81 transitions, 368 flow [2023-08-26 22:53:58,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 354 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 22:53:58,928 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 196 flow [2023-08-26 22:53:58,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2023-08-26 22:53:58,938 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2023-08-26 22:53:58,939 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 196 flow [2023-08-26 22:53:58,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:58,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:53:58,939 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-26 22:53:58,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:53:58,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:53:58,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:53:58,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1764349718, now seen corresponding path program 1 times [2023-08-26 22:53:58,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:53:58,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403177618] [2023-08-26 22:53:58,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:53:58,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:53:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:53:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:53:59,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:53:59,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403177618] [2023-08-26 22:53:59,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403177618] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:53:59,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138276780] [2023-08-26 22:53:59,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:53:59,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:53:59,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:53:59,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:53:59,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 22:53:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:53:59,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:53:59,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:53:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:53:59,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:53:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:53:59,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138276780] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:53:59,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:53:59,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 22:53:59,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320144358] [2023-08-26 22:53:59,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:53:59,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 22:53:59,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:53:59,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 22:53:59,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 22:53:59,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 511 [2023-08-26 22:53:59,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 196 flow. Second operand has 13 states, 13 states have (on average 237.30769230769232) internal successors, (3085), 13 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:53:59,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:53:59,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 511 [2023-08-26 22:53:59,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:53:59,973 INFO L124 PetriNetUnfolderBase]: 5045/8203 cut-off events. [2023-08-26 22:53:59,973 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2023-08-26 22:53:59,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16252 conditions, 8203 events. 5045/8203 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 48034 event pairs, 4776 based on Foata normal form. 6/6074 useless extension candidates. Maximal degree in co-relation 16198. Up to 7878 conditions per place. [2023-08-26 22:54:00,008 INFO L140 encePairwiseOnDemand]: 508/511 looper letters, 60 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2023-08-26 22:54:00,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 78 transitions, 374 flow [2023-08-26 22:54:00,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 22:54:00,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 22:54:00,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2909 transitions. [2023-08-26 22:54:00,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743966079582518 [2023-08-26 22:54:00,014 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2909 transitions. [2023-08-26 22:54:00,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2909 transitions. [2023-08-26 22:54:00,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:54:00,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2909 transitions. [2023-08-26 22:54:00,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 242.41666666666666) internal successors, (2909), 12 states have internal predecessors, (2909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:54:00,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 511.0) internal successors, (6643), 13 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:54:00,027 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 511.0) internal successors, (6643), 13 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:54:00,027 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 196 flow. Second operand 12 states and 2909 transitions. [2023-08-26 22:54:00,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 78 transitions, 374 flow [2023-08-26 22:54:00,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 78 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:54:00,029 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 276 flow [2023-08-26 22:54:00,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=276, PETRI_PLACES=93, PETRI_TRANSITIONS=78} [2023-08-26 22:54:00,030 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 23 predicate places. [2023-08-26 22:54:00,030 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 276 flow [2023-08-26 22:54:00,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 237.30769230769232) internal successors, (3085), 13 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:54:00,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:54:00,031 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-26 22:54:00,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 22:54:00,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:54:00,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:54:00,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:54:00,237 INFO L85 PathProgramCache]: Analyzing trace with hash 249804458, now seen corresponding path program 2 times [2023-08-26 22:54:00,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:54:00,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324216385] [2023-08-26 22:54:00,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:54:00,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:54:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:54:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:54:00,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:54:00,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324216385] [2023-08-26 22:54:00,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324216385] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:54:00,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070765626] [2023-08-26 22:54:00,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:54:00,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:54:00,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:54:00,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:54:00,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 22:54:00,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 22:54:00,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:54:00,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-26 22:54:00,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:54:00,806 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:54:00,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:54:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:54:00,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070765626] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:54:00,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:54:00,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-26 22:54:00,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915145958] [2023-08-26 22:54:00,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:54:00,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 22:54:00,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:54:00,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 22:54:00,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-26 22:54:00,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 511 [2023-08-26 22:54:00,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 78 transitions, 276 flow. Second operand has 25 states, 25 states have (on average 237.16) internal successors, (5929), 25 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:54:00,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:54:00,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 511 [2023-08-26 22:54:00,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:54:01,735 INFO L124 PetriNetUnfolderBase]: 5045/8224 cut-off events. [2023-08-26 22:54:01,736 INFO L125 PetriNetUnfolderBase]: For 749/749 co-relation queries the response was YES. [2023-08-26 22:54:01,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16339 conditions, 8224 events. 5045/8224 cut-off events. For 749/749 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 48192 event pairs, 4776 based on Foata normal form. 12/6101 useless extension candidates. Maximal degree in co-relation 16201. Up to 7878 conditions per place. [2023-08-26 22:54:01,757 INFO L140 encePairwiseOnDemand]: 508/511 looper letters, 60 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2023-08-26 22:54:01,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 90 transitions, 538 flow [2023-08-26 22:54:01,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-26 22:54:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-26 22:54:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5759 transitions. [2023-08-26 22:54:01,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46958577951728636 [2023-08-26 22:54:01,767 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5759 transitions. [2023-08-26 22:54:01,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5759 transitions. [2023-08-26 22:54:01,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:54:01,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5759 transitions. [2023-08-26 22:54:01,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 239.95833333333334) internal successors, (5759), 24 states have internal predecessors, (5759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:54:01,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 511.0) internal successors, (12775), 25 states have internal predecessors, (12775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:54:01,787 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 511.0) internal successors, (12775), 25 states have internal predecessors, (12775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:54:01,787 INFO L175 Difference]: Start difference. First operand has 93 places, 78 transitions, 276 flow. Second operand 24 states and 5759 transitions. [2023-08-26 22:54:01,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 90 transitions, 538 flow [2023-08-26 22:54:01,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 90 transitions, 466 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-26 22:54:01,790 INFO L231 Difference]: Finished difference. Result has 123 places, 90 transitions, 396 flow [2023-08-26 22:54:01,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=396, PETRI_PLACES=123, PETRI_TRANSITIONS=90} [2023-08-26 22:54:01,791 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 53 predicate places. [2023-08-26 22:54:01,791 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 90 transitions, 396 flow [2023-08-26 22:54:01,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 237.16) internal successors, (5929), 25 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:54:01,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:54:01,793 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-08-26 22:54:01,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-26 22:54:01,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:54:01,999 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:54:01,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:54:01,999 INFO L85 PathProgramCache]: Analyzing trace with hash -572071382, now seen corresponding path program 3 times [2023-08-26 22:54:01,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:54:01,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907372943] [2023-08-26 22:54:02,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:54:02,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:54:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:54:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:54:02,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:54:02,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907372943] [2023-08-26 22:54:02,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907372943] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:54:02,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27156393] [2023-08-26 22:54:02,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 22:54:02,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:54:02,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:54:02,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:54:02,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process Received shutdown request... [2023-08-26 23:08:31,908 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 23:08:31,942 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 23:08:32,928 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 [2023-08-26 23:08:33,143 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2023-08-26 23:08:33,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 137 [2023-08-26 23:08:33,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 23:08:33,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:08:33,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2023-08-26 23:08:33,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660621387] [2023-08-26 23:08:33,171 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-26 23:08:33,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 23:08:33,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:33,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 23:08:33,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-26 23:08:33,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 511 [2023-08-26 23:08:33,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 90 transitions, 396 flow. Second operand has 25 states, 25 states have (on average 237.08) internal successors, (5927), 25 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:33,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:33,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 511 [2023-08-26 23:08:33,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:33,181 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-26 23:08:33,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 23:08:33,182 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-26 23:08:33,183 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-26 23:08:33,183 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-26 23:08:33,183 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-26 23:08:33,183 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-26 23:08:33,183 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr4ASSERT_VIOLATIONASSERT (16 of 22 remaining) [2023-08-26 23:08:33,183 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-26 23:08:33,183 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-26 23:08:33,183 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-26 23:08:33,184 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-26 23:08:33,184 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-26 23:08:33,184 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-26 23:08:33,184 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2023-08-26 23:08:33,184 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2023-08-26 23:08:33,184 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-26 23:08:33,184 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-26 23:08:33,184 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 22 remaining) [2023-08-26 23:08:33,184 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-26 23:08:33,184 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-26 23:08:33,184 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-26 23:08:33,190 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-26 23:08:33,190 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr4ASSERT_VIOLATIONASSERT (0 of 22 remaining) [2023-08-26 23:08:33,194 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1] [2023-08-26 23:08:33,199 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 23:08:33,199 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 23:08:33,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 11:08:33 BasicIcfg [2023-08-26 23:08:33,201 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 23:08:33,201 INFO L158 Benchmark]: Toolchain (without parser) took 885723.68ms. Allocated memory was 398.5MB in the beginning and 841.0MB in the end (delta: 442.5MB). Free memory was 354.6MB in the beginning and 686.3MB in the end (delta: -331.8MB). Peak memory consumption was 111.8MB. Max. memory is 16.0GB. [2023-08-26 23:08:33,202 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 398.5MB. Free memory was 376.5MB in the beginning and 376.3MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 23:08:33,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 519.56ms. Allocated memory is still 398.5MB. Free memory was 354.6MB in the beginning and 317.9MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-08-26 23:08:33,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.55ms. Allocated memory is still 398.5MB. Free memory was 317.9MB in the beginning and 314.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 23:08:33,202 INFO L158 Benchmark]: Boogie Preprocessor took 21.80ms. Allocated memory is still 398.5MB. Free memory was 314.7MB in the beginning and 312.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 23:08:33,202 INFO L158 Benchmark]: RCFGBuilder took 506.14ms. Allocated memory is still 398.5MB. Free memory was 312.6MB in the beginning and 285.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 23:08:33,202 INFO L158 Benchmark]: TraceAbstraction took 884634.92ms. Allocated memory was 398.5MB in the beginning and 841.0MB in the end (delta: 442.5MB). Free memory was 284.3MB in the beginning and 686.3MB in the end (delta: -402.0MB). Peak memory consumption was 42.6MB. Max. memory is 16.0GB. [2023-08-26 23:08:33,203 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 398.5MB. Free memory was 376.5MB in the beginning and 376.3MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 519.56ms. Allocated memory is still 398.5MB. Free memory was 354.6MB in the beginning and 317.9MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.55ms. Allocated memory is still 398.5MB. Free memory was 317.9MB in the beginning and 314.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.80ms. Allocated memory is still 398.5MB. Free memory was 314.7MB in the beginning and 312.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 506.14ms. Allocated memory is still 398.5MB. Free memory was 312.6MB in the beginning and 285.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 884634.92ms. Allocated memory was 398.5MB in the beginning and 841.0MB in the end (delta: 442.5MB). Free memory was 284.3MB in the beginning and 686.3MB in the end (delta: -402.0MB). Peak memory consumption was 42.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.5s, 249 PlacesBefore, 70 PlacesAfterwards, 270 TransitionsBefore, 83 TransitionsAfterwards, 22552 CoEnabledTransitionPairs, 6 FixpointIterations, 55 TrivialSequentialCompositions, 155 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 21 ConcurrentYvCompositions, 8 ChoiceCompositions, 241 TotalNumberOfCompositions, 36528 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21341, independent: 20970, independent conditional: 0, independent unconditional: 20970, dependent: 371, dependent conditional: 0, dependent unconditional: 371, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11310, independent: 11212, independent conditional: 0, independent unconditional: 11212, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 21341, independent: 9758, independent conditional: 0, independent unconditional: 9758, dependent: 273, dependent conditional: 0, dependent unconditional: 273, unknown: 11310, unknown conditional: 0, unknown unconditional: 11310] , Statistics on independence cache: Total cache size (in pairs): 566, Positive cache size: 523, Positive conditional cache size: 0, Positive unconditional cache size: 523, Negative cache size: 43, Negative conditional cache size: 0, Negative unconditional cache size: 43, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1050]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1040]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1040]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1040]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1040]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 998]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1050]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1045]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1050]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1045]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1051]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1051]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1053]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1053]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1051]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 370 locations, 22 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: 884.5s, OverallIterations: 7, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1305 IncrementalHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 1305 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=396occurred in iteration=6, InterpolantAutomatonStates: 51, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 298 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1394 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 25/476 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 could not prove your program: Timeout Completed graceful shutdown