/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:57:10,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:57:10,839 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 11:57:10,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:57:10,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:57:10,883 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:57:10,884 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:57:10,889 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:57:10,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:57:10,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:57:10,893 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:57:10,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:57:10,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:57:10,895 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:57:10,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:57:10,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:57:10,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:57:10,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:57:10,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:57:10,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:57:10,896 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:57:10,897 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:57:10,897 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:57:10,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:57:10,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:57:10,898 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:57:10,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:57:10,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:57:10,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:57:10,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:57:10,900 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:57:10,900 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:57:10,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:57:10,901 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:57:10,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:57:10,901 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:57:11,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:57:11,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:57:11,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:57:11,224 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:57:11,224 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:57:11,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-27 11:57:12,459 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:57:12,736 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:57:12,736 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-27 11:57:12,757 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2da401c0a/fe8011a72b3a4e17818461194bc3af21/FLAG719e07edb [2023-08-27 11:57:12,770 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2da401c0a/fe8011a72b3a4e17818461194bc3af21 [2023-08-27 11:57:12,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:57:12,773 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:57:12,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:57:12,774 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:57:12,777 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:57:12,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:57:12" (1/1) ... [2023-08-27 11:57:12,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34800aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:12, skipping insertion in model container [2023-08-27 11:57:12,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:57:12" (1/1) ... [2023-08-27 11:57:12,818 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:57:13,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:57:13,192 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:57:13,217 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 11:57:13,219 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 11:57:13,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:57:13,330 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:57:13,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:13 WrapperNode [2023-08-27 11:57:13,331 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:57:13,332 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:57:13,332 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:57:13,332 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:57:13,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:13" (1/1) ... [2023-08-27 11:57:13,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:13" (1/1) ... [2023-08-27 11:57:13,399 INFO L138 Inliner]: procedures = 278, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 225 [2023-08-27 11:57:13,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:57:13,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:57:13,400 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:57:13,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:57:13,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:13" (1/1) ... [2023-08-27 11:57:13,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:13" (1/1) ... [2023-08-27 11:57:13,412 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:13" (1/1) ... [2023-08-27 11:57:13,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:13" (1/1) ... [2023-08-27 11:57:13,422 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:13" (1/1) ... [2023-08-27 11:57:13,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:13" (1/1) ... [2023-08-27 11:57:13,428 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:13" (1/1) ... [2023-08-27 11:57:13,429 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:13" (1/1) ... [2023-08-27 11:57:13,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:57:13,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:57:13,434 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:57:13,434 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:57:13,434 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:13" (1/1) ... [2023-08-27 11:57:13,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:57:13,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:57:13,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 11:57:13,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 11:57:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:57:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-27 11:57:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-27 11:57:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-27 11:57:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:57:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:57:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-27 11:57:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-27 11:57:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:57:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:57:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 11:57:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:57:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-27 11:57:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:57:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:57:13,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:57:13,506 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 11:57:13,700 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:57:13,702 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:57:14,089 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:57:14,096 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:57:14,096 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-08-27 11:57:14,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:57:14 BoogieIcfgContainer [2023-08-27 11:57:14,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:57:14,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:57:14,101 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:57:14,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:57:14,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:57:12" (1/3) ... [2023-08-27 11:57:14,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a3d3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:57:14, skipping insertion in model container [2023-08-27 11:57:14,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:57:13" (2/3) ... [2023-08-27 11:57:14,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a3d3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:57:14, skipping insertion in model container [2023-08-27 11:57:14,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:57:14" (3/3) ... [2023-08-27 11:57:14,105 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-08-27 11:57:14,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:57:14,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-27 11:57:14,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:57:14,236 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 11:57:14,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 241 transitions, 504 flow [2023-08-27 11:57:14,424 INFO L124 PetriNetUnfolderBase]: 54/472 cut-off events. [2023-08-27 11:57:14,425 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-27 11:57:14,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 472 events. 54/472 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2024 event pairs, 0 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 236. Up to 8 conditions per place. [2023-08-27 11:57:14,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 241 transitions, 504 flow [2023-08-27 11:57:14,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 240 transitions, 500 flow [2023-08-27 11:57:14,444 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:57:14,453 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 240 transitions, 500 flow [2023-08-27 11:57:14,456 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 240 transitions, 500 flow [2023-08-27 11:57:14,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 240 transitions, 500 flow [2023-08-27 11:57:14,523 INFO L124 PetriNetUnfolderBase]: 54/471 cut-off events. [2023-08-27 11:57:14,523 INFO L125 PetriNetUnfolderBase]: For 8/12 co-relation queries the response was YES. [2023-08-27 11:57:14,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 471 events. 54/471 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2006 event pairs, 0 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 236. Up to 8 conditions per place. [2023-08-27 11:57:14,538 INFO L119 LiptonReduction]: Number of co-enabled transitions 18296 [2023-08-27 11:57:21,548 INFO L134 LiptonReduction]: Checked pairs total: 34194 [2023-08-27 11:57:21,548 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-08-27 11:57:21,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:57:21,581 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;@49efcc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:57:21,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-27 11:57:21,587 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:57:21,588 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-27 11:57:21,588 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:57:21,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:21,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:57:21,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 11:57:21,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:21,594 INFO L85 PathProgramCache]: Analyzing trace with hash 28975534, now seen corresponding path program 1 times [2023-08-27 11:57:21,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:21,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603086443] [2023-08-27 11:57:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:21,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:57:21,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:21,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603086443] [2023-08-27 11:57:21,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603086443] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:21,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:21,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:57:21,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719714926] [2023-08-27 11:57:21,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:21,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:57:21,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:21,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:57:21,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:57:21,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 451 [2023-08-27 11:57:21,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 76 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:21,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:21,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 451 [2023-08-27 11:57:21,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:22,632 INFO L124 PetriNetUnfolderBase]: 3487/5828 cut-off events. [2023-08-27 11:57:22,633 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2023-08-27 11:57:22,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11403 conditions, 5828 events. 3487/5828 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 35374 event pairs, 3007 based on Foata normal form. 267/4495 useless extension candidates. Maximal degree in co-relation 10168. Up to 5481 conditions per place. [2023-08-27 11:57:22,664 INFO L140 encePairwiseOnDemand]: 434/451 looper letters, 58 selfloop transitions, 2 changer transitions 1/69 dead transitions. [2023-08-27 11:57:22,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 280 flow [2023-08-27 11:57:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:57:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:57:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2023-08-27 11:57:22,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5195861049519586 [2023-08-27 11:57:22,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2023-08-27 11:57:22,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2023-08-27 11:57:22,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:22,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2023-08-27 11:57:22,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:22,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:22,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:22,704 INFO L175 Difference]: Start difference. First operand has 63 places, 76 transitions, 172 flow. Second operand 3 states and 703 transitions. [2023-08-27 11:57:22,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 280 flow [2023-08-27 11:57:22,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:57:22,713 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 149 flow [2023-08-27 11:57:22,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2023-08-27 11:57:22,718 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2023-08-27 11:57:22,719 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 149 flow [2023-08-27 11:57:22,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:22,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:22,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:57:22,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:57:22,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 11:57:22,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1907419035, now seen corresponding path program 1 times [2023-08-27 11:57:22,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:22,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931136879] [2023-08-27 11:57:22,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:22,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:57:22,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:22,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931136879] [2023-08-27 11:57:22,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931136879] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:57:22,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085488699] [2023-08-27 11:57:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:22,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:22,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:57:22,861 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) [2023-08-27 11:57:22,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 11:57:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:22,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:57:22,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:57:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:57:23,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:57:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:57:23,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085488699] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:57:23,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:57:23,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:57:23,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958929276] [2023-08-27 11:57:23,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:57:23,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:57:23,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:23,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:57:23,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:57:23,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 451 [2023-08-27 11:57:23,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 211.42857142857142) internal successors, (1480), 7 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:23,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 451 [2023-08-27 11:57:23,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:23,057 INFO L124 PetriNetUnfolderBase]: 12/39 cut-off events. [2023-08-27 11:57:23,057 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-27 11:57:23,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 39 events. 12/39 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 5 based on Foata normal form. 7/46 useless extension candidates. Maximal degree in co-relation 90. Up to 26 conditions per place. [2023-08-27 11:57:23,057 INFO L140 encePairwiseOnDemand]: 448/451 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-27 11:57:23,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 80 flow [2023-08-27 11:57:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:57:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:57:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 854 transitions. [2023-08-27 11:57:23,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47339246119733924 [2023-08-27 11:57:23,060 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 854 transitions. [2023-08-27 11:57:23,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 854 transitions. [2023-08-27 11:57:23,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:23,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 854 transitions. [2023-08-27 11:57:23,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 451.0) internal successors, (2255), 5 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,067 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 451.0) internal successors, (2255), 5 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,067 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 149 flow. Second operand 4 states and 854 transitions. [2023-08-27 11:57:23,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 80 flow [2023-08-27 11:57:23,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 19 transitions, 74 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:57:23,068 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-27 11:57:23,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-27 11:57:23,069 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -45 predicate places. [2023-08-27 11:57:23,069 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-27 11:57:23,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 211.42857142857142) internal successors, (1480), 7 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-27 11:57:23,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-27 11:57:23,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-27 11:57:23,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-27 11:57:23,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-27 11:57:23,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-27 11:57:23,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-27 11:57:23,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-27 11:57:23,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-27 11:57:23,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-27 11:57:23,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-27 11:57:23,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONASSERT (6 of 18 remaining) [2023-08-27 11:57:23,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-27 11:57:23,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-27 11:57:23,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-27 11:57:23,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONASSERT (2 of 18 remaining) [2023-08-27 11:57:23,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-27 11:57:23,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-27 11:57:23,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 11:57:23,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:23,281 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-27 11:57:23,283 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:57:23,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 241 transitions, 504 flow [2023-08-27 11:57:23,340 INFO L124 PetriNetUnfolderBase]: 54/472 cut-off events. [2023-08-27 11:57:23,340 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-27 11:57:23,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 472 events. 54/472 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2024 event pairs, 0 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 236. Up to 8 conditions per place. [2023-08-27 11:57:23,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 241 transitions, 504 flow [2023-08-27 11:57:23,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 237 transitions, 490 flow [2023-08-27 11:57:23,346 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:57:23,346 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 237 transitions, 490 flow [2023-08-27 11:57:23,346 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 237 transitions, 490 flow [2023-08-27 11:57:23,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 237 transitions, 490 flow [2023-08-27 11:57:23,390 INFO L124 PetriNetUnfolderBase]: 50/450 cut-off events. [2023-08-27 11:57:23,390 INFO L125 PetriNetUnfolderBase]: For 4/6 co-relation queries the response was YES. [2023-08-27 11:57:23,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 450 events. 50/450 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1882 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-08-27 11:57:23,404 INFO L119 LiptonReduction]: Number of co-enabled transitions 17422 [2023-08-27 11:57:29,765 INFO L134 LiptonReduction]: Checked pairs total: 30566 [2023-08-27 11:57:29,766 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-08-27 11:57:29,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:57:29,768 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;@49efcc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:57:29,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 11:57:29,771 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:57:29,772 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2023-08-27 11:57:29,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:57:29,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:29,772 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 11:57:29,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:57:29,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:29,773 INFO L85 PathProgramCache]: Analyzing trace with hash -314407566, now seen corresponding path program 1 times [2023-08-27 11:57:29,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:29,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227183456] [2023-08-27 11:57:29,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:29,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:57:29,797 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:57:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:57:29,822 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:57:29,822 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:57:29,823 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 11:57:29,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 11:57:29,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 11:57:29,823 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:57:29,824 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-27 11:57:29,824 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:57:29,824 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 11:57:29,869 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-27 11:57:29,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 367 transitions, 782 flow [2023-08-27 11:57:30,078 INFO L124 PetriNetUnfolderBase]: 197/1447 cut-off events. [2023-08-27 11:57:30,079 INFO L125 PetriNetUnfolderBase]: For 72/88 co-relation queries the response was YES. [2023-08-27 11:57:30,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544 conditions, 1447 events. 197/1447 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9374 event pairs, 2 based on Foata normal form. 0/1157 useless extension candidates. Maximal degree in co-relation 893. Up to 32 conditions per place. [2023-08-27 11:57:30,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 367 transitions, 782 flow [2023-08-27 11:57:30,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 366 transitions, 776 flow [2023-08-27 11:57:30,114 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:57:30,114 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 366 transitions, 776 flow [2023-08-27 11:57:30,115 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 366 transitions, 776 flow [2023-08-27 11:57:30,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 366 transitions, 776 flow [2023-08-27 11:57:30,325 INFO L124 PetriNetUnfolderBase]: 197/1446 cut-off events. [2023-08-27 11:57:30,325 INFO L125 PetriNetUnfolderBase]: For 71/85 co-relation queries the response was YES. [2023-08-27 11:57:30,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 1446 events. 197/1446 cut-off events. For 71/85 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9359 event pairs, 2 based on Foata normal form. 0/1156 useless extension candidates. Maximal degree in co-relation 893. Up to 32 conditions per place. [2023-08-27 11:57:30,409 INFO L119 LiptonReduction]: Number of co-enabled transitions 67644 [2023-08-27 11:57:37,478 INFO L134 LiptonReduction]: Checked pairs total: 129998 [2023-08-27 11:57:37,479 INFO L136 LiptonReduction]: Total number of compositions: 306 [2023-08-27 11:57:37,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:57:37,481 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;@49efcc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:57:37,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-27 11:57:37,483 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:57:37,483 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-27 11:57:37,483 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:57:37,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:37,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:57:37,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-27 11:57:37,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:37,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1857885401, now seen corresponding path program 1 times [2023-08-27 11:57:37,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:37,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024831212] [2023-08-27 11:57:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:37,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:57:37,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:37,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024831212] [2023-08-27 11:57:37,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024831212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:37,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:37,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:57:37,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378825481] [2023-08-27 11:57:37,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:37,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:57:37,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:37,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:57:37,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:57:37,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 673 [2023-08-27 11:57:37,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 127 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:37,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:37,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 673 [2023-08-27 11:57:37,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand