/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_94-alloc_region_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:57:47,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:57:47,466 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 22:57:47,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:57:47,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:57:47,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:57:47,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:57:47,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:57:47,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:57:47,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:57:47,512 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:57:47,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:57:47,513 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:57:47,514 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:57:47,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:57:47,514 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:57:47,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:57:47,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:57:47,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:57:47,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:57:47,515 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:57:47,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:57:47,516 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:57:47,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:57:47,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:57:47,517 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:57:47,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:57:47,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:57:47,518 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:57:47,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:57:47,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:57:47,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:57:47,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:57:47,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:57:47,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:57:47,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:57:47,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:57:47,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:57:47,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:57:47,842 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:57:47,843 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:57:47,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-08-26 22:57:49,115 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:57:49,417 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:57:49,418 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-08-26 22:57:49,443 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1ccec1b9/756dc1a7024a4bfcb230ac9e2a63bce6/FLAG2b7a9966c [2023-08-26 22:57:49,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1ccec1b9/756dc1a7024a4bfcb230ac9e2a63bce6 [2023-08-26 22:57:49,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:57:49,466 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:57:49,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:57:49,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:57:49,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:57:49,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:57:49" (1/1) ... [2023-08-26 22:57:49,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@385a041d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:49, skipping insertion in model container [2023-08-26 22:57:49,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:57:49" (1/1) ... [2023-08-26 22:57:49,529 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:57:50,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:57:50,133 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:57:50,161 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:57:50,162 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:57:50,176 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [1044] [2023-08-26 22:57:50,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:57:50,305 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:57:50,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:50 WrapperNode [2023-08-26 22:57:50,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:57:50,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:57:50,307 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:57:50,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:57:50,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:50" (1/1) ... [2023-08-26 22:57:50,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:50" (1/1) ... [2023-08-26 22:57:50,362 INFO L138 Inliner]: procedures = 377, calls = 73, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 258 [2023-08-26 22:57:50,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:57:50,368 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:57:50,368 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:57:50,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:57:50,376 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:50" (1/1) ... [2023-08-26 22:57:50,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:50" (1/1) ... [2023-08-26 22:57:50,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:50" (1/1) ... [2023-08-26 22:57:50,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:50" (1/1) ... [2023-08-26 22:57:50,395 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:50" (1/1) ... [2023-08-26 22:57:50,408 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:50" (1/1) ... [2023-08-26 22:57:50,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:50" (1/1) ... [2023-08-26 22:57:50,411 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:50" (1/1) ... [2023-08-26 22:57:50,415 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:57:50,415 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:57:50,415 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:57:50,416 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:57:50,416 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:50" (1/1) ... [2023-08-26 22:57:50,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:57:50,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:57:50,444 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 22:57:50,453 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 22:57:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:57:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-26 22:57:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:57:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-26 22:57:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:57:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:57:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:57:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 22:57:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:57:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 22:57:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:57:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:57:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:57:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:57:50,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:57:50,483 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 22:57:50,607 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:57:50,609 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:57:50,906 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:57:50,914 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:57:50,914 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-26 22:57:50,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:57:50 BoogieIcfgContainer [2023-08-26 22:57:50,916 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:57:50,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:57:50,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:57:50,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:57:50,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:57:49" (1/3) ... [2023-08-26 22:57:50,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea01748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:57:50, skipping insertion in model container [2023-08-26 22:57:50,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:50" (2/3) ... [2023-08-26 22:57:50,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea01748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:57:50, skipping insertion in model container [2023-08-26 22:57:50,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:57:50" (3/3) ... [2023-08-26 22:57:50,927 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2023-08-26 22:57:50,942 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:57:50,942 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-26 22:57:50,943 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:57:51,044 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:57:51,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 274 transitions, 556 flow [2023-08-26 22:57:51,259 INFO L124 PetriNetUnfolderBase]: 48/391 cut-off events. [2023-08-26 22:57:51,259 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:57:51,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 391 events. 48/391 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1237 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-08-26 22:57:51,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 274 transitions, 556 flow [2023-08-26 22:57:51,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 271 transitions, 550 flow [2023-08-26 22:57:51,280 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:57:51,289 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 271 transitions, 550 flow [2023-08-26 22:57:51,292 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 271 transitions, 550 flow [2023-08-26 22:57:51,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 271 transitions, 550 flow [2023-08-26 22:57:51,350 INFO L124 PetriNetUnfolderBase]: 47/388 cut-off events. [2023-08-26 22:57:51,350 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:57:51,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 388 events. 47/388 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1235 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-08-26 22:57:51,364 INFO L119 LiptonReduction]: Number of co-enabled transitions 22860 [2023-08-26 22:58:01,053 INFO L134 LiptonReduction]: Checked pairs total: 50968 [2023-08-26 22:58:01,054 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-08-26 22:58:01,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:58:01,071 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;@d3c5db6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:58:01,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-26 22:58:01,074 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:58:01,074 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-26 22:58:01,074 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:58:01,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:58:01,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:58:01,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 22:58:01,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:58:01,080 INFO L85 PathProgramCache]: Analyzing trace with hash 31593574, now seen corresponding path program 1 times [2023-08-26 22:58:01,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:58:01,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69859084] [2023-08-26 22:58:01,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:58:01,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:58:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:58:01,383 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 22:58:01,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:58:01,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69859084] [2023-08-26 22:58:01,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69859084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:58:01,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:58:01,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:58:01,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616314265] [2023-08-26 22:58:01,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:58:01,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:58:01,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:58:01,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:58:01,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:58:01,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 504 [2023-08-26 22:58:01,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 98 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 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 22:58:01,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:58:01,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 504 [2023-08-26 22:58:01,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:58:01,770 INFO L124 PetriNetUnfolderBase]: 853/1824 cut-off events. [2023-08-26 22:58:01,771 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:58:01,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3545 conditions, 1824 events. 853/1824 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10947 event pairs, 0 based on Foata normal form. 151/1568 useless extension candidates. Maximal degree in co-relation 3475. Up to 1662 conditions per place. [2023-08-26 22:58:01,784 INFO L140 encePairwiseOnDemand]: 476/504 looper letters, 87 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-26 22:58:01,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 99 transitions, 384 flow [2023-08-26 22:58:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:58:01,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:58:01,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2023-08-26 22:58:01,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548941798941799 [2023-08-26 22:58:01,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2023-08-26 22:58:01,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2023-08-26 22:58:01,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:58:01,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2023-08-26 22:58:01,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 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 22:58:01,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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 22:58:01,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 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 22:58:01,820 INFO L175 Difference]: Start difference. First operand has 76 places, 98 transitions, 204 flow. Second operand 3 states and 830 transitions. [2023-08-26 22:58:01,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 99 transitions, 384 flow [2023-08-26 22:58:01,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:58:01,827 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 162 flow [2023-08-26 22:58:01,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2023-08-26 22:58:01,832 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2023-08-26 22:58:01,832 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 162 flow [2023-08-26 22:58:01,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 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 22:58:01,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:58:01,833 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:58:01,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:58:01,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 22:58:01,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:58:01,834 INFO L85 PathProgramCache]: Analyzing trace with hash 296712619, now seen corresponding path program 1 times [2023-08-26 22:58:01,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:58:01,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694698706] [2023-08-26 22:58:01,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:58:01,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:58:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:58:01,869 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:58:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:58:01,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:58:01,916 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:58:01,917 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-26 22:58:01,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-26 22:58:01,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-26 22:58:01,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-26 22:58:01,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-26 22:58:01,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-26 22:58:01,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-26 22:58:01,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-26 22:58:01,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-26 22:58:01,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (10 of 20 remaining) [2023-08-26 22:58:01,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-26 22:58:01,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-26 22:58:01,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-26 22:58:01,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-26 22:58:01,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (5 of 20 remaining) [2023-08-26 22:58:01,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-26 22:58:01,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-26 22:58:01,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-26 22:58:01,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-26 22:58:01,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (0 of 20 remaining) [2023-08-26 22:58:01,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:58:01,923 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 22:58:01,925 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:58:01,926 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:58:01,996 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:58:02,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 366 transitions, 750 flow [2023-08-26 22:58:02,092 INFO L124 PetriNetUnfolderBase]: 81/637 cut-off events. [2023-08-26 22:58:02,093 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:58:02,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 637 events. 81/637 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2635 event pairs, 0 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 393. Up to 12 conditions per place. [2023-08-26 22:58:02,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 366 transitions, 750 flow [2023-08-26 22:58:02,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 326 places, 366 transitions, 750 flow [2023-08-26 22:58:02,106 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:58:02,106 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 326 places, 366 transitions, 750 flow [2023-08-26 22:58:02,107 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 326 places, 366 transitions, 750 flow [2023-08-26 22:58:02,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 366 transitions, 750 flow [2023-08-26 22:58:02,189 INFO L124 PetriNetUnfolderBase]: 81/637 cut-off events. [2023-08-26 22:58:02,190 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:58:02,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 637 events. 81/637 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2635 event pairs, 0 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 393. Up to 12 conditions per place. [2023-08-26 22:58:02,231 INFO L119 LiptonReduction]: Number of co-enabled transitions 65340 [2023-08-26 22:58:12,920 INFO L134 LiptonReduction]: Checked pairs total: 151509 [2023-08-26 22:58:12,921 INFO L136 LiptonReduction]: Total number of compositions: 303 [2023-08-26 22:58:12,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:58:12,923 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;@d3c5db6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:58:12,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-26 22:58:12,926 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:58:12,926 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 22:58:12,926 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:58:12,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:58:12,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:58:12,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:58:12,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:58:12,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1704347114, now seen corresponding path program 1 times [2023-08-26 22:58:12,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:58:12,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269754702] [2023-08-26 22:58:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:58:12,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:58:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:58:13,036 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 22:58:13,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:58:13,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269754702] [2023-08-26 22:58:13,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269754702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:58:13,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:58:13,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:58:13,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576662222] [2023-08-26 22:58:13,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:58:13,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:58:13,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:58:13,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:58:13,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:58:13,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 669 [2023-08-26 22:58:13,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 144 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 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 22:58:13,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:58:13,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 669 [2023-08-26 22:58:13,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:58:18,253 INFO L124 PetriNetUnfolderBase]: 45691/71908 cut-off events. [2023-08-26 22:58:18,253 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-08-26 22:58:18,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140773 conditions, 71908 events. 45691/71908 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 588876 event pairs, 4443 based on Foata normal form. 5958/59973 useless extension candidates. Maximal degree in co-relation 120049. Up to 61579 conditions per place. [2023-08-26 22:58:18,600 INFO L140 encePairwiseOnDemand]: 633/669 looper letters, 139 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2023-08-26 22:58:18,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 159 transitions, 618 flow [2023-08-26 22:58:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:58:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:58:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1132 transitions. [2023-08-26 22:58:18,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5640259093173892 [2023-08-26 22:58:18,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1132 transitions. [2023-08-26 22:58:18,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1132 transitions. [2023-08-26 22:58:18,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:58:18,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1132 transitions. [2023-08-26 22:58:18,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 377.3333333333333) internal successors, (1132), 3 states have internal predecessors, (1132), 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 22:58:18,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 669.0) internal successors, (2676), 4 states have internal predecessors, (2676), 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 22:58:18,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 669.0) internal successors, (2676), 4 states have internal predecessors, (2676), 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 22:58:18,612 INFO L175 Difference]: Start difference. First operand has 110 places, 144 transitions, 306 flow. Second operand 3 states and 1132 transitions. [2023-08-26 22:58:18,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 159 transitions, 618 flow [2023-08-26 22:58:18,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 159 transitions, 618 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:58:18,621 INFO L231 Difference]: Finished difference. Result has 111 places, 110 transitions, 242 flow [2023-08-26 22:58:18,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=669, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=111, PETRI_TRANSITIONS=110} [2023-08-26 22:58:18,622 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 1 predicate places. [2023-08-26 22:58:18,622 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 110 transitions, 242 flow [2023-08-26 22:58:18,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 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 22:58:18,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:58:18,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:58:18,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:58:18,623 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:58:18,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:58:18,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1704347224, now seen corresponding path program 1 times [2023-08-26 22:58:18,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:58:18,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036573760] [2023-08-26 22:58:18,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:58:18,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:58:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:58:18,696 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 22:58:18,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:58:18,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036573760] [2023-08-26 22:58:18,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036573760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:58:18,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:58:18,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:58:18,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339286773] [2023-08-26 22:58:18,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:58:18,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:58:18,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:58:18,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:58:18,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:58:18,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 669 [2023-08-26 22:58:18,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 110 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 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 22:58:18,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:58:18,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 669 [2023-08-26 22:58:18,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:58:22,960 INFO L124 PetriNetUnfolderBase]: 46331/71853 cut-off events. [2023-08-26 22:58:22,960 INFO L125 PetriNetUnfolderBase]: For 760/760 co-relation queries the response was YES. [2023-08-26 22:58:23,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141358 conditions, 71853 events. 46331/71853 cut-off events. For 760/760 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 545753 event pairs, 21400 based on Foata normal form. 1/54504 useless extension candidates. Maximal degree in co-relation 14874. Up to 68618 conditions per place. [2023-08-26 22:58:23,292 INFO L140 encePairwiseOnDemand]: 665/669 looper letters, 116 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2023-08-26 22:58:23,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 136 transitions, 530 flow [2023-08-26 22:58:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:58:23,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:58:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1056 transitions. [2023-08-26 22:58:23,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261584454409567 [2023-08-26 22:58:23,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1056 transitions. [2023-08-26 22:58:23,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1056 transitions. [2023-08-26 22:58:23,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:58:23,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1056 transitions. [2023-08-26 22:58:23,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 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 22:58:23,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 669.0) internal successors, (2676), 4 states have internal predecessors, (2676), 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 22:58:23,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 669.0) internal successors, (2676), 4 states have internal predecessors, (2676), 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 22:58:23,302 INFO L175 Difference]: Start difference. First operand has 111 places, 110 transitions, 242 flow. Second operand 3 states and 1056 transitions. [2023-08-26 22:58:23,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 136 transitions, 530 flow [2023-08-26 22:58:23,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 136 transitions, 526 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:58:23,317 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 252 flow [2023-08-26 22:58:23,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=669, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2023-08-26 22:58:23,318 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 2 predicate places. [2023-08-26 22:58:23,318 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 252 flow [2023-08-26 22:58:23,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 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 22:58:23,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:58:23,319 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:58:23,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:58:23,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:58:23,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:58:23,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1931791118, now seen corresponding path program 1 times [2023-08-26 22:58:23,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:58:23,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898214672] [2023-08-26 22:58:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:58:23,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:58:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:58:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:58:23,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:58:23,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898214672] [2023-08-26 22:58:23,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898214672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:58:23,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:58:23,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:58:23,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843735118] [2023-08-26 22:58:23,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:58:23,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:58:23,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:58:23,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:58:23,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:58:23,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 669 [2023-08-26 22:58:23,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 314.3333333333333) internal successors, (943), 3 states have internal predecessors, (943), 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 22:58:23,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:58:23,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 669 [2023-08-26 22:58:23,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:58:27,908 INFO L124 PetriNetUnfolderBase]: 44348/69673 cut-off events. [2023-08-26 22:58:27,908 INFO L125 PetriNetUnfolderBase]: For 851/851 co-relation queries the response was YES. [2023-08-26 22:58:27,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137944 conditions, 69673 events. 44348/69673 cut-off events. For 851/851 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 553355 event pairs, 3250 based on Foata normal form. 0/53461 useless extension candidates. Maximal degree in co-relation 95811. Up to 63497 conditions per place. [2023-08-26 22:58:28,272 INFO L140 encePairwiseOnDemand]: 665/669 looper letters, 138 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2023-08-26 22:58:28,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 160 transitions, 632 flow [2023-08-26 22:58:28,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:58:28,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:58:28,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1078 transitions. [2023-08-26 22:58:28,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371200797209765 [2023-08-26 22:58:28,277 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1078 transitions. [2023-08-26 22:58:28,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1078 transitions. [2023-08-26 22:58:28,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:58:28,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1078 transitions. [2023-08-26 22:58:28,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 359.3333333333333) internal successors, (1078), 3 states have internal predecessors, (1078), 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 22:58:28,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 669.0) internal successors, (2676), 4 states have internal predecessors, (2676), 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 22:58:28,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 669.0) internal successors, (2676), 4 states have internal predecessors, (2676), 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 22:58:28,285 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 252 flow. Second operand 3 states and 1078 transitions. [2023-08-26 22:58:28,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 160 transitions, 632 flow [2023-08-26 22:58:28,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 160 transitions, 630 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:58:28,292 INFO L231 Difference]: Finished difference. Result has 113 places, 111 transitions, 262 flow [2023-08-26 22:58:28,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=669, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=113, PETRI_TRANSITIONS=111} [2023-08-26 22:58:28,294 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 3 predicate places. [2023-08-26 22:58:28,294 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 111 transitions, 262 flow [2023-08-26 22:58:28,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.3333333333333) internal successors, (943), 3 states have internal predecessors, (943), 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 22:58:28,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:58:28,295 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:58:28,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:58:28,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:58:28,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:58:28,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1025340203, now seen corresponding path program 1 times [2023-08-26 22:58:28,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:58:28,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493142187] [2023-08-26 22:58:28,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:58:28,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:58:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:58:28,328 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:58:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:58:28,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:58:28,368 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:58:28,369 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-26 22:58:28,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-08-26 22:58:28,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-08-26 22:58:28,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-08-26 22:58:28,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-08-26 22:58:28,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-08-26 22:58:28,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-08-26 22:58:28,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-08-26 22:58:28,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-08-26 22:58:28,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (15 of 25 remaining) [2023-08-26 22:58:28,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-08-26 22:58:28,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-08-26 22:58:28,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-08-26 22:58:28,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-08-26 22:58:28,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (10 of 25 remaining) [2023-08-26 22:58:28,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-08-26 22:58:28,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-08-26 22:58:28,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-08-26 22:58:28,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-08-26 22:58:28,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (5 of 25 remaining) [2023-08-26 22:58:28,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-08-26 22:58:28,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-08-26 22:58:28,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-08-26 22:58:28,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-08-26 22:58:28,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (0 of 25 remaining) [2023-08-26 22:58:28,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:58:28,377 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-26 22:58:28,378 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:58:28,378 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:58:28,429 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:58:28,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 406 places, 458 transitions, 946 flow [2023-08-26 22:58:28,611 INFO L124 PetriNetUnfolderBase]: 119/924 cut-off events. [2023-08-26 22:58:28,611 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:58:28,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952 conditions, 924 events. 119/924 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4345 event pairs, 1 based on Foata normal form. 0/746 useless extension candidates. Maximal degree in co-relation 645. Up to 16 conditions per place. [2023-08-26 22:58:28,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 406 places, 458 transitions, 946 flow [2023-08-26 22:58:28,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 406 places, 458 transitions, 946 flow [2023-08-26 22:58:28,638 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:58:28,638 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 406 places, 458 transitions, 946 flow [2023-08-26 22:58:28,639 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 406 places, 458 transitions, 946 flow [2023-08-26 22:58:28,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 406 places, 458 transitions, 946 flow [2023-08-26 22:58:28,912 INFO L124 PetriNetUnfolderBase]: 119/924 cut-off events. [2023-08-26 22:58:28,912 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:58:28,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952 conditions, 924 events. 119/924 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4345 event pairs, 1 based on Foata normal form. 0/746 useless extension candidates. Maximal degree in co-relation 645. Up to 16 conditions per place. [2023-08-26 22:58:28,957 INFO L119 LiptonReduction]: Number of co-enabled transitions 123120 [2023-08-26 22:58:39,797 INFO L134 LiptonReduction]: Checked pairs total: 324567 [2023-08-26 22:58:39,798 INFO L136 LiptonReduction]: Total number of compositions: 375 [2023-08-26 22:58:39,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:58:39,800 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;@d3c5db6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:58:39,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-26 22:58:39,802 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:58:39,802 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 22:58:39,802 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:58:39,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:58:39,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:58:39,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:58:39,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:58:39,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1709424033, now seen corresponding path program 1 times [2023-08-26 22:58:39,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:58:39,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664004429] [2023-08-26 22:58:39,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:58:39,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:58:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:58:39,895 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 22:58:39,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:58:39,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664004429] [2023-08-26 22:58:39,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664004429] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:58:39,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:58:39,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:58:39,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403311543] [2023-08-26 22:58:39,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:58:39,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:58:39,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:58:39,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:58:39,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:58:39,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 833 [2023-08-26 22:58:39,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 186 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 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 22:58:39,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:58:39,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 833 [2023-08-26 22:58:39,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand