/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_20-callback_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:36:54,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:36:54,901 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 22:36:54,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:36:54,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:36:54,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:36:54,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:36:54,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:36:54,939 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:36:54,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:36:54,943 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:36:54,943 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:36:54,943 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:36:54,945 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:36:54,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:36:54,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:36:54,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:36:54,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:36:54,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:36:54,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:36:54,946 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:36:54,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:36:54,947 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:36:54,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:36:54,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:36:54,948 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:36:54,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:36:54,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:36:54,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:36:54,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:36:54,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:36:54,950 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:36:54,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:36:54,950 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:36:54,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:36:54,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:36:55,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:36:55,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:36:55,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:36:55,310 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:36:55,310 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:36:55,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2023-08-26 22:36:56,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:36:56,801 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:36:56,802 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2023-08-26 22:36:56,813 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9928a0640/be43cfb8e7454923b29e0802c55981c2/FLAG38c3ed411 [2023-08-26 22:36:56,825 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9928a0640/be43cfb8e7454923b29e0802c55981c2 [2023-08-26 22:36:56,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:36:56,828 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:36:56,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:36:56,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:36:56,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:36:56,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:36:56" (1/1) ... [2023-08-26 22:36:56,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35760c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:56, skipping insertion in model container [2023-08-26 22:36:56,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:36:56" (1/1) ... [2023-08-26 22:36:56,872 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:36:57,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:36:57,219 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:36:57,247 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-26 22:36:57,249 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-26 22:36:57,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:36:57,312 WARN L669 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 22:36:57,318 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:36:57,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:57 WrapperNode [2023-08-26 22:36:57,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:36:57,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:36:57,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:36:57,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:36:57,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:57" (1/1) ... [2023-08-26 22:36:57,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:57" (1/1) ... [2023-08-26 22:36:57,385 INFO L138 Inliner]: procedures = 173, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 151 [2023-08-26 22:36:57,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:36:57,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:36:57,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:36:57,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:36:57,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:57" (1/1) ... [2023-08-26 22:36:57,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:57" (1/1) ... [2023-08-26 22:36:57,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:57" (1/1) ... [2023-08-26 22:36:57,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:57" (1/1) ... [2023-08-26 22:36:57,418 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:57" (1/1) ... [2023-08-26 22:36:57,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:57" (1/1) ... [2023-08-26 22:36:57,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:57" (1/1) ... [2023-08-26 22:36:57,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:57" (1/1) ... [2023-08-26 22:36:57,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:36:57,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:36:57,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:36:57,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:36:57,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:57" (1/1) ... [2023-08-26 22:36:57,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:36:57,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:36:57,478 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 22:36:57,498 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 22:36:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:36:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:36:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:36:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:36:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:36:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:36:57,524 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:36:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:36:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:36:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:36:57,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:36:57,526 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 22:36:57,684 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:36:57,686 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:36:57,905 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:36:57,912 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:36:57,913 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-26 22:36:57,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:36:57 BoogieIcfgContainer [2023-08-26 22:36:57,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:36:57,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:36:57,917 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:36:57,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:36:57,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:36:56" (1/3) ... [2023-08-26 22:36:57,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a69574a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:36:57, skipping insertion in model container [2023-08-26 22:36:57,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:36:57" (2/3) ... [2023-08-26 22:36:57,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a69574a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:36:57, skipping insertion in model container [2023-08-26 22:36:57,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:36:57" (3/3) ... [2023-08-26 22:36:57,922 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2023-08-26 22:36:57,937 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:36:57,938 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-26 22:36:57,938 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:36:57,990 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:36:58,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 164 transitions, 336 flow [2023-08-26 22:36:58,093 INFO L124 PetriNetUnfolderBase]: 27/249 cut-off events. [2023-08-26 22:36:58,093 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:36:58,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 249 events. 27/249 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 754 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 120. Up to 6 conditions per place. [2023-08-26 22:36:58,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 164 transitions, 336 flow [2023-08-26 22:36:58,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 161 transitions, 330 flow [2023-08-26 22:36:58,110 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:36:58,118 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 161 transitions, 330 flow [2023-08-26 22:36:58,121 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 161 transitions, 330 flow [2023-08-26 22:36:58,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 161 transitions, 330 flow [2023-08-26 22:36:58,183 INFO L124 PetriNetUnfolderBase]: 26/246 cut-off events. [2023-08-26 22:36:58,183 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:36:58,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 26/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 739 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 120. Up to 6 conditions per place. [2023-08-26 22:36:58,188 INFO L119 LiptonReduction]: Number of co-enabled transitions 4560 [2023-08-26 22:37:01,696 INFO L134 LiptonReduction]: Checked pairs total: 6182 [2023-08-26 22:37:01,697 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-26 22:37:01,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:37:01,714 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;@1b4669ba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:37:01,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-26 22:37:01,718 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:37:01,718 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2023-08-26 22:37:01,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:37:01,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:01,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:37:01,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:37:01,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash 18709578, now seen corresponding path program 1 times [2023-08-26 22:37:01,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:01,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473051660] [2023-08-26 22:37:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:01,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:37:01,962 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 22:37:01,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:37:01,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473051660] [2023-08-26 22:37:01,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473051660] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:37:01,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:37:01,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:37:01,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040131286] [2023-08-26 22:37:01,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:37:01,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:37:01,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:37:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:37:01,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:37:02,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 317 [2023-08-26 22:37:02,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 44 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 22:37:02,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:37:02,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 317 [2023-08-26 22:37:02,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:37:02,088 INFO L124 PetriNetUnfolderBase]: 97/217 cut-off events. [2023-08-26 22:37:02,088 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:37:02,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 217 events. 97/217 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 882 event pairs, 64 based on Foata normal form. 24/174 useless extension candidates. Maximal degree in co-relation 413. Up to 203 conditions per place. [2023-08-26 22:37:02,091 INFO L140 encePairwiseOnDemand]: 303/317 looper letters, 33 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-26 22:37:02,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 156 flow [2023-08-26 22:37:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:37:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:37:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-08-26 22:37:02,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931650893796004 [2023-08-26 22:37:02,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-08-26 22:37:02,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-08-26 22:37:02,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:37:02,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-08-26 22:37:02,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 22:37:02,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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 22:37:02,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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 22:37:02,121 INFO L175 Difference]: Start difference. First operand has 37 places, 44 transitions, 96 flow. Second operand 3 states and 469 transitions. [2023-08-26 22:37:02,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 156 flow [2023-08-26 22:37:02,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 156 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:37:02,125 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 82 flow [2023-08-26 22:37:02,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-08-26 22:37:02,130 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-26 22:37:02,130 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 82 flow [2023-08-26 22:37:02,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 22:37:02,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:02,130 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:37:02,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:37:02,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:37:02,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:02,132 INFO L85 PathProgramCache]: Analyzing trace with hash 783795758, now seen corresponding path program 1 times [2023-08-26 22:37:02,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:02,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514329355] [2023-08-26 22:37:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:02,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:37:02,160 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:37:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:37:02,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:37:02,203 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:37:02,205 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-26 22:37:02,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-26 22:37:02,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-26 22:37:02,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-26 22:37:02,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-26 22:37:02,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-26 22:37:02,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-26 22:37:02,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-26 22:37:02,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-26 22:37:02,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-26 22:37:02,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-26 22:37:02,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (1 of 13 remaining) [2023-08-26 22:37:02,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (0 of 13 remaining) [2023-08-26 22:37:02,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:37:02,214 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 22:37:02,216 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:37:02,217 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:37:02,247 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:37:02,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 190 transitions, 398 flow [2023-08-26 22:37:02,303 INFO L124 PetriNetUnfolderBase]: 45/397 cut-off events. [2023-08-26 22:37:02,303 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:37:02,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 397 events. 45/397 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1518 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 251. Up to 9 conditions per place. [2023-08-26 22:37:02,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 190 transitions, 398 flow [2023-08-26 22:37:02,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 190 transitions, 398 flow [2023-08-26 22:37:02,312 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:37:02,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 190 transitions, 398 flow [2023-08-26 22:37:02,313 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 190 transitions, 398 flow [2023-08-26 22:37:02,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 190 transitions, 398 flow [2023-08-26 22:37:02,354 INFO L124 PetriNetUnfolderBase]: 45/397 cut-off events. [2023-08-26 22:37:02,354 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:37:02,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 397 events. 45/397 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1518 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 251. Up to 9 conditions per place. [2023-08-26 22:37:02,364 INFO L119 LiptonReduction]: Number of co-enabled transitions 11184 [2023-08-26 22:37:05,736 INFO L134 LiptonReduction]: Checked pairs total: 17833 [2023-08-26 22:37:05,736 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-08-26 22:37:05,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:37:05,739 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;@1b4669ba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:37:05,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-26 22:37:05,741 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:37:05,741 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2023-08-26 22:37:05,741 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:37:05,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:05,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:37:05,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:37:05,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash 30716748, now seen corresponding path program 1 times [2023-08-26 22:37:05,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:05,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211587096] [2023-08-26 22:37:05,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:05,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:37:05,810 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 22:37:05,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:37:05,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211587096] [2023-08-26 22:37:05,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211587096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:37:05,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:37:05,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:37:05,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948232929] [2023-08-26 22:37:05,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:37:05,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:37:05,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:37:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:37:05,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:37:05,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 364 [2023-08-26 22:37:05,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 64 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 22:37:05,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:37:05,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 364 [2023-08-26 22:37:05,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:37:06,126 INFO L124 PetriNetUnfolderBase]: 2413/3944 cut-off events. [2023-08-26 22:37:06,126 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-26 22:37:06,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7886 conditions, 3944 events. 2413/3944 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22283 event pairs, 1044 based on Foata normal form. 241/2920 useless extension candidates. Maximal degree in co-relation 1541. Up to 3870 conditions per place. [2023-08-26 22:37:06,149 INFO L140 encePairwiseOnDemand]: 346/364 looper letters, 51 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-26 22:37:06,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 240 flow [2023-08-26 22:37:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:37:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:37:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 550 transitions. [2023-08-26 22:37:06,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036630036630036 [2023-08-26 22:37:06,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 550 transitions. [2023-08-26 22:37:06,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 550 transitions. [2023-08-26 22:37:06,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:37:06,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 550 transitions. [2023-08-26 22:37:06,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 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 22:37:06,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 22:37:06,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 22:37:06,158 INFO L175 Difference]: Start difference. First operand has 52 places, 64 transitions, 146 flow. Second operand 3 states and 550 transitions. [2023-08-26 22:37:06,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 240 flow [2023-08-26 22:37:06,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:37:06,161 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 132 flow [2023-08-26 22:37:06,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-08-26 22:37:06,162 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-08-26 22:37:06,162 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 132 flow [2023-08-26 22:37:06,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 22:37:06,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:06,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:37:06,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:37:06,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:37:06,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:06,163 INFO L85 PathProgramCache]: Analyzing trace with hash -566156113, now seen corresponding path program 1 times [2023-08-26 22:37:06,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:06,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956242549] [2023-08-26 22:37:06,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:06,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:37:06,271 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 22:37:06,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:37:06,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956242549] [2023-08-26 22:37:06,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956242549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:37:06,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:37:06,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:37:06,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618578935] [2023-08-26 22:37:06,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:37:06,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:37:06,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:37:06,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:37:06,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:37:06,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 364 [2023-08-26 22:37:06,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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 22:37:06,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:37:06,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 364 [2023-08-26 22:37:06,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:37:06,698 INFO L124 PetriNetUnfolderBase]: 2834/4768 cut-off events. [2023-08-26 22:37:06,698 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2023-08-26 22:37:06,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9586 conditions, 4768 events. 2834/4768 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 26200 event pairs, 1243 based on Foata normal form. 0/3515 useless extension candidates. Maximal degree in co-relation 9536. Up to 3101 conditions per place. [2023-08-26 22:37:06,724 INFO L140 encePairwiseOnDemand]: 357/364 looper letters, 66 selfloop transitions, 2 changer transitions 1/74 dead transitions. [2023-08-26 22:37:06,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 324 flow [2023-08-26 22:37:06,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:37:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:37:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2023-08-26 22:37:06,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2023-08-26 22:37:06,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2023-08-26 22:37:06,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2023-08-26 22:37:06,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:37:06,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2023-08-26 22:37:06,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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 22:37:06,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 22:37:06,731 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 22:37:06,731 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 132 flow. Second operand 3 states and 553 transitions. [2023-08-26 22:37:06,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 324 flow [2023-08-26 22:37:06,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:37:06,736 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 150 flow [2023-08-26 22:37:06,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-08-26 22:37:06,738 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-08-26 22:37:06,738 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 150 flow [2023-08-26 22:37:06,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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 22:37:06,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:06,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:37:06,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:37:06,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:37:06,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:06,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1146452020, now seen corresponding path program 1 times [2023-08-26 22:37:06,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:06,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345651256] [2023-08-26 22:37:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:06,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:37:06,797 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 22:37:06,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:37:06,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345651256] [2023-08-26 22:37:06,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345651256] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:37:06,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759353489] [2023-08-26 22:37:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:06,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:37:06,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:37:06,825 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 22:37:06,826 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 22:37:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:37:06,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:37:06,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:37:06,976 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 22:37:06,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:37:06,992 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 22:37:06,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759353489] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:37:06,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:37:06,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:37:06,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950481462] [2023-08-26 22:37:06,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:37:06,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:37:06,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:37:06,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:37:06,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:37:06,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 364 [2023-08-26 22:37:06,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 161.14285714285714) internal successors, (1128), 7 states have internal predecessors, (1128), 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 22:37:06,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:37:06,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 364 [2023-08-26 22:37:06,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:37:07,093 INFO L124 PetriNetUnfolderBase]: 220/427 cut-off events. [2023-08-26 22:37:07,094 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-08-26 22:37:07,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 427 events. 220/427 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1791 event pairs, 0 based on Foata normal form. 42/432 useless extension candidates. Maximal degree in co-relation 979. Up to 192 conditions per place. [2023-08-26 22:37:07,096 INFO L140 encePairwiseOnDemand]: 359/364 looper letters, 40 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-08-26 22:37:07,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 203 flow [2023-08-26 22:37:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:37:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:37:07,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1001 transitions. [2023-08-26 22:37:07,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-08-26 22:37:07,100 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1001 transitions. [2023-08-26 22:37:07,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1001 transitions. [2023-08-26 22:37:07,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:37:07,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1001 transitions. [2023-08-26 22:37:07,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 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 22:37:07,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 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 22:37:07,107 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 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 22:37:07,107 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 150 flow. Second operand 6 states and 1001 transitions. [2023-08-26 22:37:07,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 203 flow [2023-08-26 22:37:07,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 199 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 22:37:07,110 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 65 flow [2023-08-26 22:37:07,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=65, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-08-26 22:37:07,112 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -21 predicate places. [2023-08-26 22:37:07,112 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 65 flow [2023-08-26 22:37:07,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 161.14285714285714) internal successors, (1128), 7 states have internal predecessors, (1128), 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 22:37:07,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:07,113 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:37:07,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 22:37:07,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:37:07,320 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:37:07,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1179616184, now seen corresponding path program 1 times [2023-08-26 22:37:07,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:07,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552418791] [2023-08-26 22:37:07,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:37:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:37:07,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:37:07,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552418791] [2023-08-26 22:37:07,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552418791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:37:07,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:37:07,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:37:07,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604951085] [2023-08-26 22:37:07,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:37:07,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:37:07,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:37:07,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:37:07,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:37:07,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 364 [2023-08-26 22:37:07,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 22:37:07,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:37:07,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 364 [2023-08-26 22:37:07,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:37:07,407 INFO L124 PetriNetUnfolderBase]: 160/297 cut-off events. [2023-08-26 22:37:07,408 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-08-26 22:37:07,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 297 events. 160/297 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1105 event pairs, 160 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 691. Up to 288 conditions per place. [2023-08-26 22:37:07,409 INFO L140 encePairwiseOnDemand]: 362/364 looper letters, 15 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-08-26 22:37:07,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 18 transitions, 91 flow [2023-08-26 22:37:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:37:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:37:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-08-26 22:37:07,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45146520146520147 [2023-08-26 22:37:07,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-08-26 22:37:07,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-08-26 22:37:07,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:37:07,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-08-26 22:37:07,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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 22:37:07,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 22:37:07,415 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 22:37:07,416 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 65 flow. Second operand 3 states and 493 transitions. [2023-08-26 22:37:07,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 18 transitions, 91 flow [2023-08-26 22:37:07,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 84 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-26 22:37:07,417 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 54 flow [2023-08-26 22:37:07,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-26 22:37:07,420 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -24 predicate places. [2023-08-26 22:37:07,420 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 54 flow [2023-08-26 22:37:07,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 22:37:07,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:07,421 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:37:07,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:37:07,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:37:07,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:07,422 INFO L85 PathProgramCache]: Analyzing trace with hash -260152452, now seen corresponding path program 1 times [2023-08-26 22:37:07,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:07,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958579858] [2023-08-26 22:37:07,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:07,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:37:07,443 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:37:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:37:07,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:37:07,462 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:37:07,462 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2023-08-26 22:37:07,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-26 22:37:07,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-26 22:37:07,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-26 22:37:07,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-08-26 22:37:07,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-08-26 22:37:07,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-08-26 22:37:07,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-08-26 22:37:07,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-08-26 22:37:07,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-08-26 22:37:07,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-26 22:37:07,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (2 of 14 remaining) [2023-08-26 22:37:07,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (1 of 14 remaining) [2023-08-26 22:37:07,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (0 of 14 remaining) [2023-08-26 22:37:07,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:37:07,464 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 22:37:07,465 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:37:07,465 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:37:07,485 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:37:07,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 216 transitions, 462 flow [2023-08-26 22:37:07,549 INFO L124 PetriNetUnfolderBase]: 68/586 cut-off events. [2023-08-26 22:37:07,550 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:37:07,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 586 events. 68/586 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2482 event pairs, 1 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 405. Up to 16 conditions per place. [2023-08-26 22:37:07,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 216 transitions, 462 flow [2023-08-26 22:37:07,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 216 transitions, 462 flow [2023-08-26 22:37:07,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:37:07,563 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 216 transitions, 462 flow [2023-08-26 22:37:07,563 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 216 transitions, 462 flow [2023-08-26 22:37:07,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 216 transitions, 462 flow [2023-08-26 22:37:07,609 INFO L124 PetriNetUnfolderBase]: 68/586 cut-off events. [2023-08-26 22:37:07,609 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:37:07,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 586 events. 68/586 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2482 event pairs, 1 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 405. Up to 16 conditions per place. [2023-08-26 22:37:07,626 INFO L119 LiptonReduction]: Number of co-enabled transitions 18720 [2023-08-26 22:37:11,073 INFO L134 LiptonReduction]: Checked pairs total: 28286 [2023-08-26 22:37:11,074 INFO L136 LiptonReduction]: Total number of compositions: 203 [2023-08-26 22:37:11,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:37:11,075 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;@1b4669ba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:37:11,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-26 22:37:11,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:37:11,077 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2023-08-26 22:37:11,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:37:11,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:11,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:37:11,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 22:37:11,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:11,078 INFO L85 PathProgramCache]: Analyzing trace with hash 44412969, now seen corresponding path program 1 times [2023-08-26 22:37:11,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:11,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255832581] [2023-08-26 22:37:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:11,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:37:11,099 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 22:37:11,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:37:11,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255832581] [2023-08-26 22:37:11,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255832581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:37:11,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:37:11,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:37:11,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360857101] [2023-08-26 22:37:11,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:37:11,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:37:11,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:37:11,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:37:11,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:37:11,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 419 [2023-08-26 22:37:11,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 76 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 22:37:11,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:37:11,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 419 [2023-08-26 22:37:11,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:37:13,130 INFO L124 PetriNetUnfolderBase]: 19831/28403 cut-off events. [2023-08-26 22:37:13,130 INFO L125 PetriNetUnfolderBase]: For 674/674 co-relation queries the response was YES. [2023-08-26 22:37:13,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56987 conditions, 28403 events. 19831/28403 cut-off events. For 674/674 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 179758 event pairs, 12499 based on Foata normal form. 1660/22436 useless extension candidates. Maximal degree in co-relation 6955. Up to 28118 conditions per place. [2023-08-26 22:37:13,277 INFO L140 encePairwiseOnDemand]: 398/419 looper letters, 55 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-26 22:37:13,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 270 flow [2023-08-26 22:37:13,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:37:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:37:13,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-08-26 22:37:13,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48766905330151156 [2023-08-26 22:37:13,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-08-26 22:37:13,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-08-26 22:37:13,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:37:13,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-08-26 22:37:13,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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 22:37:13,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 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 22:37:13,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 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 22:37:13,284 INFO L175 Difference]: Start difference. First operand has 62 places, 76 transitions, 182 flow. Second operand 3 states and 613 transitions. [2023-08-26 22:37:13,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 270 flow [2023-08-26 22:37:13,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:37:13,288 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 158 flow [2023-08-26 22:37:13,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-26 22:37:13,289 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2023-08-26 22:37:13,289 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 158 flow [2023-08-26 22:37:13,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 22:37:13,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:13,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:37:13,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:37:13,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 22:37:13,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:13,290 INFO L85 PathProgramCache]: Analyzing trace with hash -289190015, now seen corresponding path program 1 times [2023-08-26 22:37:13,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:13,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877406150] [2023-08-26 22:37:13,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:13,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:37:13,343 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 22:37:13,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:37:13,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877406150] [2023-08-26 22:37:13,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877406150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:37:13,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:37:13,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:37:13,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719016109] [2023-08-26 22:37:13,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:37:13,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:37:13,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:37:13,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:37:13,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:37:13,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 419 [2023-08-26 22:37:13,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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 22:37:13,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:37:13,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 419 [2023-08-26 22:37:13,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:37:15,482 INFO L124 PetriNetUnfolderBase]: 23298/34175 cut-off events. [2023-08-26 22:37:15,483 INFO L125 PetriNetUnfolderBase]: For 1101/1101 co-relation queries the response was YES. [2023-08-26 22:37:15,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68802 conditions, 34175 events. 23298/34175 cut-off events. For 1101/1101 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 218151 event pairs, 9748 based on Foata normal form. 0/26710 useless extension candidates. Maximal degree in co-relation 68756. Up to 22477 conditions per place. [2023-08-26 22:37:15,658 INFO L140 encePairwiseOnDemand]: 412/419 looper letters, 77 selfloop transitions, 2 changer transitions 1/86 dead transitions. [2023-08-26 22:37:15,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 385 flow [2023-08-26 22:37:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:37:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:37:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2023-08-26 22:37:15,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4916467780429594 [2023-08-26 22:37:15,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2023-08-26 22:37:15,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2023-08-26 22:37:15,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:37:15,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2023-08-26 22:37:15,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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 22:37:15,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 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 22:37:15,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 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 22:37:15,666 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 158 flow. Second operand 3 states and 618 transitions. [2023-08-26 22:37:15,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 385 flow [2023-08-26 22:37:15,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:37:15,670 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 176 flow [2023-08-26 22:37:15,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-26 22:37:15,671 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2023-08-26 22:37:15,671 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 176 flow [2023-08-26 22:37:15,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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 22:37:15,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:15,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:37:15,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 22:37:15,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 22:37:15,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:15,676 INFO L85 PathProgramCache]: Analyzing trace with hash 971423930, now seen corresponding path program 1 times [2023-08-26 22:37:15,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:15,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658412165] [2023-08-26 22:37:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:15,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:37:15,716 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 22:37:15,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:37:15,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658412165] [2023-08-26 22:37:15,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658412165] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:37:15,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033083833] [2023-08-26 22:37:15,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:15,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:37:15,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:37:15,721 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 22:37:15,746 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 22:37:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:37:15,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:37:15,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:37:15,811 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 22:37:15,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:37:15,830 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 22:37:15,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033083833] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:37:15,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:37:15,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:37:15,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621938866] [2023-08-26 22:37:15,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:37:15,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:37:15,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:37:15,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:37:15,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:37:15,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 419 [2023-08-26 22:37:15,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 180.14285714285714) internal successors, (1261), 7 states have internal predecessors, (1261), 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 22:37:15,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:37:15,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 419 [2023-08-26 22:37:15,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:37:16,062 INFO L124 PetriNetUnfolderBase]: 1805/2879 cut-off events. [2023-08-26 22:37:16,063 INFO L125 PetriNetUnfolderBase]: For 850/850 co-relation queries the response was YES. [2023-08-26 22:37:16,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6653 conditions, 2879 events. 1805/2879 cut-off events. For 850/850 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 15099 event pairs, 0 based on Foata normal form. 215/2883 useless extension candidates. Maximal degree in co-relation 6641. Up to 1248 conditions per place. [2023-08-26 22:37:16,075 INFO L140 encePairwiseOnDemand]: 414/419 looper letters, 62 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2023-08-26 22:37:16,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 71 transitions, 314 flow [2023-08-26 22:37:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:37:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:37:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1319 transitions. [2023-08-26 22:37:16,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44971019434026593 [2023-08-26 22:37:16,079 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1319 transitions. [2023-08-26 22:37:16,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1319 transitions. [2023-08-26 22:37:16,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:37:16,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1319 transitions. [2023-08-26 22:37:16,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 188.42857142857142) internal successors, (1319), 7 states have internal predecessors, (1319), 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 22:37:16,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 419.0) internal successors, (3352), 8 states have internal predecessors, (3352), 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 22:37:16,087 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 419.0) internal successors, (3352), 8 states have internal predecessors, (3352), 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 22:37:16,087 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 176 flow. Second operand 7 states and 1319 transitions. [2023-08-26 22:37:16,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 71 transitions, 314 flow [2023-08-26 22:37:16,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 71 transitions, 306 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-26 22:37:16,089 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 94 flow [2023-08-26 22:37:16,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=94, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2023-08-26 22:37:16,091 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -22 predicate places. [2023-08-26 22:37:16,091 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 94 flow [2023-08-26 22:37:16,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 180.14285714285714) internal successors, (1261), 7 states have internal predecessors, (1261), 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 22:37:16,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:16,091 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:37:16,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 22:37:16,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-26 22:37:16,297 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 22:37:16,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:16,298 INFO L85 PathProgramCache]: Analyzing trace with hash 48704471, now seen corresponding path program 1 times [2023-08-26 22:37:16,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:16,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528556307] [2023-08-26 22:37:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:16,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:37:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:37:16,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:37:16,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528556307] [2023-08-26 22:37:16,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528556307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:37:16,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:37:16,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:37:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436478539] [2023-08-26 22:37:16,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:37:16,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:37:16,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:37:16,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:37:16,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:37:16,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 419 [2023-08-26 22:37:16,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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 22:37:16,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:37:16,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 419 [2023-08-26 22:37:16,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:37:16,463 INFO L124 PetriNetUnfolderBase]: 1312/2006 cut-off events. [2023-08-26 22:37:16,464 INFO L125 PetriNetUnfolderBase]: For 742/742 co-relation queries the response was YES. [2023-08-26 22:37:16,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4532 conditions, 2006 events. 1312/2006 cut-off events. For 742/742 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9542 event pairs, 1312 based on Foata normal form. 0/2005 useless extension candidates. Maximal degree in co-relation 4520. Up to 1959 conditions per place. [2023-08-26 22:37:16,472 INFO L140 encePairwiseOnDemand]: 417/419 looper letters, 21 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-08-26 22:37:16,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 25 transitions, 126 flow [2023-08-26 22:37:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:37:16,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:37:16,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2023-08-26 22:37:16,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441527446300716 [2023-08-26 22:37:16,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2023-08-26 22:37:16,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2023-08-26 22:37:16,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:37:16,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2023-08-26 22:37:16,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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 22:37:16,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 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 22:37:16,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 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 22:37:16,479 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 94 flow. Second operand 3 states and 555 transitions. [2023-08-26 22:37:16,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 25 transitions, 126 flow [2023-08-26 22:37:16,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 25 transitions, 117 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 22:37:16,481 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 75 flow [2023-08-26 22:37:16,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2023-08-26 22:37:16,482 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -25 predicate places. [2023-08-26 22:37:16,482 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 75 flow [2023-08-26 22:37:16,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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 22:37:16,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:16,483 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 22:37:16,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 22:37:16,483 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 22:37:16,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:16,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1323907845, now seen corresponding path program 1 times [2023-08-26 22:37:16,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:16,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274689430] [2023-08-26 22:37:16,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:16,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:37:16,501 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:37:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:37:16,522 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:37:16,522 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:37:16,523 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-08-26 22:37:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2023-08-26 22:37:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2023-08-26 22:37:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-08-26 22:37:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2023-08-26 22:37:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2023-08-26 22:37:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2023-08-26 22:37:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2023-08-26 22:37:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2023-08-26 22:37:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-08-26 22:37:16,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2023-08-26 22:37:16,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (3 of 15 remaining) [2023-08-26 22:37:16,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (2 of 15 remaining) [2023-08-26 22:37:16,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (1 of 15 remaining) [2023-08-26 22:37:16,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (0 of 15 remaining) [2023-08-26 22:37:16,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 22:37:16,524 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 22:37:16,525 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:37:16,525 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 22:37:16,644 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 22:37:16,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 242 transitions, 528 flow [2023-08-26 22:37:16,727 INFO L124 PetriNetUnfolderBase]: 103/859 cut-off events. [2023-08-26 22:37:16,727 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:37:16,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 859 events. 103/859 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3968 event pairs, 6 based on Foata normal form. 0/684 useless extension candidates. Maximal degree in co-relation 606. Up to 32 conditions per place. [2023-08-26 22:37:16,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 242 transitions, 528 flow [2023-08-26 22:37:16,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 242 transitions, 528 flow [2023-08-26 22:37:16,736 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:37:16,736 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 242 transitions, 528 flow [2023-08-26 22:37:16,736 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 242 transitions, 528 flow [2023-08-26 22:37:16,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 242 transitions, 528 flow [2023-08-26 22:37:16,809 INFO L124 PetriNetUnfolderBase]: 103/859 cut-off events. [2023-08-26 22:37:16,809 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:37:16,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 859 events. 103/859 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3968 event pairs, 6 based on Foata normal form. 0/684 useless extension candidates. Maximal degree in co-relation 606. Up to 32 conditions per place. [2023-08-26 22:37:16,831 INFO L119 LiptonReduction]: Number of co-enabled transitions 27552 [2023-08-26 22:37:20,382 INFO L134 LiptonReduction]: Checked pairs total: 47389 [2023-08-26 22:37:20,382 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-08-26 22:37:20,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:37:20,386 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;@1b4669ba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:37:20,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-26 22:37:20,389 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:37:20,389 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2023-08-26 22:37:20,389 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:37:20,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:20,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:37:20,389 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 22:37:20,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:20,391 INFO L85 PathProgramCache]: Analyzing trace with hash 59379284, now seen corresponding path program 1 times [2023-08-26 22:37:20,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:20,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973100727] [2023-08-26 22:37:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:20,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:37:20,417 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 22:37:20,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:37:20,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973100727] [2023-08-26 22:37:20,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973100727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:37:20,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:37:20,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:37:20,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776941984] [2023-08-26 22:37:20,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:37:20,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:37:20,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:37:20,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:37:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:37:20,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 461 [2023-08-26 22:37:20,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 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 22:37:20,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:37:20,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 461 [2023-08-26 22:37:20,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:37:38,165 INFO L124 PetriNetUnfolderBase]: 223409/304951 cut-off events. [2023-08-26 22:37:38,165 INFO L125 PetriNetUnfolderBase]: For 9650/9650 co-relation queries the response was YES. [2023-08-26 22:37:38,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603062 conditions, 304951 events. 223409/304951 cut-off events. For 9650/9650 co-relation queries the response was YES. Maximal size of possible extension queue 11040. Compared 2382130 event pairs, 160443 based on Foata normal form. 68420/263903 useless extension candidates. Maximal degree in co-relation 67737. Up to 292794 conditions per place. [2023-08-26 22:37:39,787 INFO L140 encePairwiseOnDemand]: 436/461 looper letters, 65 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-26 22:37:39,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 330 flow [2023-08-26 22:37:39,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:37:39,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:37:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2023-08-26 22:37:39,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945770065075922 [2023-08-26 22:37:39,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2023-08-26 22:37:39,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2023-08-26 22:37:39,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:37:39,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2023-08-26 22:37:39,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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 22:37:39,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 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 22:37:39,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 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 22:37:39,794 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 224 flow. Second operand 3 states and 684 transitions. [2023-08-26 22:37:39,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 330 flow [2023-08-26 22:37:39,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:37:39,801 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 196 flow [2023-08-26 22:37:39,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2023-08-26 22:37:39,803 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2023-08-26 22:37:39,803 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 196 flow [2023-08-26 22:37:39,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 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 22:37:39,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:37:39,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:37:39,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 22:37:39,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 22:37:39,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:37:39,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1235301281, now seen corresponding path program 1 times [2023-08-26 22:37:39,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:37:39,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4849872] [2023-08-26 22:37:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:37:39,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:37:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:37:39,846 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 22:37:39,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:37:39,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4849872] [2023-08-26 22:37:39,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4849872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:37:39,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:37:39,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:37:39,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727379394] [2023-08-26 22:37:39,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:37:39,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:37:39,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:37:39,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:37:39,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:37:39,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 461 [2023-08-26 22:37:39,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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 22:37:39,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:37:39,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 461 [2023-08-26 22:37:39,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:37:59,150 INFO L124 PetriNetUnfolderBase]: 241678/337678 cut-off events. [2023-08-26 22:37:59,150 INFO L125 PetriNetUnfolderBase]: For 9100/9100 co-relation queries the response was YES. [2023-08-26 22:37:59,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671145 conditions, 337678 events. 241678/337678 cut-off events. For 9100/9100 co-relation queries the response was YES. Maximal size of possible extension queue 10102. Compared 2673206 event pairs, 117589 based on Foata normal form. 0/241778 useless extension candidates. Maximal degree in co-relation 671098. Up to 227232 conditions per place. [2023-08-26 22:38:00,778 INFO L140 encePairwiseOnDemand]: 445/461 looper letters, 93 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2023-08-26 22:38:00,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 476 flow [2023-08-26 22:38:00,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:38:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:38:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-08-26 22:38:00,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032537960954447 [2023-08-26 22:38:00,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-08-26 22:38:00,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-08-26 22:38:00,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:38:00,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-08-26 22:38:00,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 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 22:38:00,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 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 22:38:00,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 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 22:38:00,784 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 196 flow. Second operand 3 states and 696 transitions. [2023-08-26 22:38:00,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 476 flow [2023-08-26 22:38:00,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 106 transitions, 474 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:38:00,789 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 246 flow [2023-08-26 22:38:00,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-08-26 22:38:00,790 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 4 predicate places. [2023-08-26 22:38:00,790 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 246 flow [2023-08-26 22:38:00,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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 22:38:00,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:38:00,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:38:00,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 22:38:00,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 22:38:00,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:38:00,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1369206114, now seen corresponding path program 1 times [2023-08-26 22:38:00,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:38:00,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030898417] [2023-08-26 22:38:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:38:00,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:38:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:38:00,831 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 22:38:00,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:38:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030898417] [2023-08-26 22:38:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030898417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:38:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659893677] [2023-08-26 22:38:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:38:00,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:38:00,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:38:00,833 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 22:38:00,864 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 22:38:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:38:00,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:38:00,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:38:00,927 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 22:38:00,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:38:00,943 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 22:38:00,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659893677] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:38:00,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:38:00,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:38:00,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368147207] [2023-08-26 22:38:00,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:38:00,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:38:00,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:38:00,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:38:00,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:38:00,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 461 [2023-08-26 22:38:00,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 199.14285714285714) internal successors, (1394), 7 states have internal predecessors, (1394), 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 22:38:00,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:38:00,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 461 [2023-08-26 22:38:00,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:38:18,747 INFO L124 PetriNetUnfolderBase]: 221289/310105 cut-off events. [2023-08-26 22:38:18,747 INFO L125 PetriNetUnfolderBase]: For 48230/48230 co-relation queries the response was YES. [2023-08-26 22:38:19,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704073 conditions, 310105 events. 221289/310105 cut-off events. For 48230/48230 co-relation queries the response was YES. Maximal size of possible extension queue 9692. Compared 2501368 event pairs, 60840 based on Foata normal form. 155/255448 useless extension candidates. Maximal degree in co-relation 98737. Up to 288087 conditions per place. [2023-08-26 22:38:20,457 INFO L140 encePairwiseOnDemand]: 455/461 looper letters, 118 selfloop transitions, 9 changer transitions 0/136 dead transitions. [2023-08-26 22:38:20,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 136 transitions, 640 flow [2023-08-26 22:38:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:38:20,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:38:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1509 transitions. [2023-08-26 22:38:20,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676169817167648 [2023-08-26 22:38:20,462 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1509 transitions. [2023-08-26 22:38:20,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1509 transitions. [2023-08-26 22:38:20,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:38:20,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1509 transitions. [2023-08-26 22:38:20,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 215.57142857142858) internal successors, (1509), 7 states have internal predecessors, (1509), 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 22:38:20,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 461.0) internal successors, (3688), 8 states have internal predecessors, (3688), 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 22:38:20,471 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 461.0) internal successors, (3688), 8 states have internal predecessors, (3688), 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 22:38:20,471 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 246 flow. Second operand 7 states and 1509 transitions. [2023-08-26 22:38:20,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 136 transitions, 640 flow [2023-08-26 22:38:20,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 136 transitions, 632 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:38:20,765 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 291 flow [2023-08-26 22:38:20,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2023-08-26 22:38:20,766 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2023-08-26 22:38:20,766 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 291 flow [2023-08-26 22:38:20,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 199.14285714285714) internal successors, (1394), 7 states have internal predecessors, (1394), 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 22:38:20,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:38:20,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:38:20,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 22:38:20,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:38:20,974 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 22:38:20,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:38:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash -504088215, now seen corresponding path program 1 times [2023-08-26 22:38:20,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:38:20,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217262752] [2023-08-26 22:38:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:38:20,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:38:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:38:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:38:21,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:38:21,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217262752] [2023-08-26 22:38:21,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217262752] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:38:21,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737978004] [2023-08-26 22:38:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:38:21,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:38:21,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:38:21,017 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 22:38:21,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 22:38:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:38:21,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 22:38:21,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:38:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:38:21,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:38:21,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737978004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:38:21,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:38:21,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 22:38:21,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656754712] [2023-08-26 22:38:21,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:38:21,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:38:21,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:38:21,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:38:21,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:38:21,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 461 [2023-08-26 22:38:21,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 198.75) internal successors, (795), 4 states have internal predecessors, (795), 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 22:38:21,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:38:21,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 461 [2023-08-26 22:38:21,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:38:40,044 INFO L124 PetriNetUnfolderBase]: 219044/307430 cut-off events. [2023-08-26 22:38:40,045 INFO L125 PetriNetUnfolderBase]: For 42837/42837 co-relation queries the response was YES. [2023-08-26 22:38:40,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693462 conditions, 307430 events. 219044/307430 cut-off events. For 42837/42837 co-relation queries the response was YES. Maximal size of possible extension queue 9692. Compared 2489739 event pairs, 64700 based on Foata normal form. 750/246295 useless extension candidates. Maximal degree in co-relation 79316. Up to 285577 conditions per place. [2023-08-26 22:38:42,129 INFO L140 encePairwiseOnDemand]: 457/461 looper letters, 82 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2023-08-26 22:38:42,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 94 transitions, 486 flow [2023-08-26 22:38:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:38:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:38:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 868 transitions. [2023-08-26 22:38:42,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47071583514099785 [2023-08-26 22:38:42,133 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 868 transitions. [2023-08-26 22:38:42,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 868 transitions. [2023-08-26 22:38:42,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:38:42,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 868 transitions. [2023-08-26 22:38:42,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 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 22:38:42,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 461.0) internal successors, (2305), 5 states have internal predecessors, (2305), 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 22:38:42,167 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 461.0) internal successors, (2305), 5 states have internal predecessors, (2305), 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 22:38:42,167 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 291 flow. Second operand 4 states and 868 transitions. [2023-08-26 22:38:42,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 94 transitions, 486 flow [2023-08-26 22:38:42,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 94 transitions, 478 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-26 22:38:42,278 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 268 flow [2023-08-26 22:38:42,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2023-08-26 22:38:42,280 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2023-08-26 22:38:42,281 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 268 flow [2023-08-26 22:38:42,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.75) internal successors, (795), 4 states have internal predecessors, (795), 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 22:38:42,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:38:42,281 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-26 22:38:42,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 22:38:42,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 22:38:42,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 22:38:42,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:38:42,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1889661781, now seen corresponding path program 1 times [2023-08-26 22:38:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:38:42,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696751097] [2023-08-26 22:38:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:38:42,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:38:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:38:42,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:38:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:38:42,568 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:38:42,568 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:38:42,569 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-08-26 22:38:42,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-26 22:38:42,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-26 22:38:42,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-26 22:38:42,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-26 22:38:42,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-26 22:38:42,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-26 22:38:42,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-26 22:38:42,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-26 22:38:42,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-26 22:38:42,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-26 22:38:42,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (4 of 16 remaining) [2023-08-26 22:38:42,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (3 of 16 remaining) [2023-08-26 22:38:42,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (2 of 16 remaining) [2023-08-26 22:38:42,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (1 of 16 remaining) [2023-08-26 22:38:42,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (0 of 16 remaining) [2023-08-26 22:38:42,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 22:38:42,584 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 22:38:42,584 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:38:42,584 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-26 22:38:42,612 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-26 22:38:42,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 268 transitions, 596 flow [2023-08-26 22:38:42,759 INFO L124 PetriNetUnfolderBase]: 166/1304 cut-off events. [2023-08-26 22:38:42,759 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 22:38:42,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1415 conditions, 1304 events. 166/1304 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6790 event pairs, 23 based on Foata normal form. 0/1041 useless extension candidates. Maximal degree in co-relation 904. Up to 80 conditions per place. [2023-08-26 22:38:42,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 268 transitions, 596 flow [2023-08-26 22:38:42,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 268 transitions, 596 flow [2023-08-26 22:38:42,778 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:38:42,778 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 268 transitions, 596 flow [2023-08-26 22:38:42,778 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 268 transitions, 596 flow [2023-08-26 22:38:42,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 268 transitions, 596 flow [2023-08-26 22:38:42,949 INFO L124 PetriNetUnfolderBase]: 166/1304 cut-off events. [2023-08-26 22:38:42,949 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 22:38:42,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1415 conditions, 1304 events. 166/1304 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6790 event pairs, 23 based on Foata normal form. 0/1041 useless extension candidates. Maximal degree in co-relation 904. Up to 80 conditions per place. [2023-08-26 22:38:43,041 INFO L119 LiptonReduction]: Number of co-enabled transitions 37680 [2023-08-26 22:38:47,401 INFO L134 LiptonReduction]: Checked pairs total: 63426 [2023-08-26 22:38:47,402 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-08-26 22:38:47,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:38:47,403 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;@1b4669ba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:38:47,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-26 22:38:47,405 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:38:47,405 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2023-08-26 22:38:47,405 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:38:47,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:38:47,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:38:47,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 22:38:47,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:38:47,405 INFO L85 PathProgramCache]: Analyzing trace with hash 75967716, now seen corresponding path program 1 times [2023-08-26 22:38:47,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:38:47,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854120718] [2023-08-26 22:38:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:38:47,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:38:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:38:47,421 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 22:38:47,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:38:47,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854120718] [2023-08-26 22:38:47,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854120718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:38:47,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:38:47,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:38:47,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550381016] [2023-08-26 22:38:47,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:38:47,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:38:47,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:38:47,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:38:47,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:38:47,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 513 [2023-08-26 22:38:47,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 96 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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 22:38:47,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:38:47,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 513 [2023-08-26 22:38:47,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand