/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_84-list2_racing2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:50:47,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:50:47,487 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 22:50:47,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:50:47,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:50:47,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:50:47,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:50:47,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:50:47,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:50:47,518 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:50:47,518 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:50:47,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:50:47,519 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:50:47,520 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:50:47,520 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:50:47,520 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:50:47,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:50:47,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:50:47,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:50:47,521 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:50:47,521 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:50:47,522 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:50:47,522 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:50:47,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:50:47,522 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:50:47,523 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:50:47,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:50:47,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:50:47,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:50:47,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:50:47,524 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:50:47,524 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:50:47,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:50:47,524 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:50:47,525 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:50:47,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:50:47,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:50:47,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:50:47,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:50:47,806 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:50:47,806 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:50:47,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-08-26 22:50:48,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:50:49,078 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:50:49,079 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-08-26 22:50:49,089 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99c9b9ccf/e8e65b6770d347679d599e8586b1421c/FLAG6b2634f07 [2023-08-26 22:50:49,378 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99c9b9ccf/e8e65b6770d347679d599e8586b1421c [2023-08-26 22:50:49,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:50:49,380 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:50:49,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:50:49,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:50:49,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:50:49,383 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:50:49" (1/1) ... [2023-08-26 22:50:49,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf6ffa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49, skipping insertion in model container [2023-08-26 22:50:49,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:50:49" (1/1) ... [2023-08-26 22:50:49,446 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:50:49,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:50:49,853 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:50:49,875 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 22:50:49,877 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 22:50:49,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:50:49,971 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:50:49,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49 WrapperNode [2023-08-26 22:50:49,971 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:50:49,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:50:49,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:50:49,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:50:49,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49" (1/1) ... [2023-08-26 22:50:49,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49" (1/1) ... [2023-08-26 22:50:50,020 INFO L138 Inliner]: procedures = 279, calls = 89, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 416 [2023-08-26 22:50:50,020 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:50:50,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:50:50,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:50:50,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:50:50,028 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49" (1/1) ... [2023-08-26 22:50:50,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49" (1/1) ... [2023-08-26 22:50:50,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49" (1/1) ... [2023-08-26 22:50:50,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49" (1/1) ... [2023-08-26 22:50:50,042 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49" (1/1) ... [2023-08-26 22:50:50,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49" (1/1) ... [2023-08-26 22:50:50,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49" (1/1) ... [2023-08-26 22:50:50,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49" (1/1) ... [2023-08-26 22:50:50,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:50:50,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:50:50,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:50:50,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:50:50,055 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49" (1/1) ... [2023-08-26 22:50:50,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:50:50,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:50:50,090 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 22:50:50,092 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 22:50:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:50:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-26 22:50:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-26 22:50:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-26 22:50:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:50:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:50:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-26 22:50:50,125 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-26 22:50:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:50:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:50:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 22:50:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:50:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 22:50:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-26 22:50:50,126 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-26 22:50:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:50:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:50:50,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:50:50,129 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 22:50:50,305 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:50:50,307 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:50:50,753 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:50:50,759 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:50:50,759 INFO L302 CfgBuilder]: Removed 29 assume(true) statements. [2023-08-26 22:50:50,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:50:50 BoogieIcfgContainer [2023-08-26 22:50:50,761 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:50:50,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:50:50,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:50:50,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:50:50,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:50:49" (1/3) ... [2023-08-26 22:50:50,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31395d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:50:50, skipping insertion in model container [2023-08-26 22:50:50,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:50:49" (2/3) ... [2023-08-26 22:50:50,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31395d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:50:50, skipping insertion in model container [2023-08-26 22:50:50,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:50:50" (3/3) ... [2023-08-26 22:50:50,765 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2023-08-26 22:50:50,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:50:50,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-26 22:50:50,776 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:50:50,841 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-26 22:50:50,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 447 transitions, 936 flow [2023-08-26 22:50:51,220 INFO L124 PetriNetUnfolderBase]: 194/1637 cut-off events. [2023-08-26 22:50:51,220 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-26 22:50:51,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 1637 events. 194/1637 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 10947 event pairs, 0 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 832. Up to 16 conditions per place. [2023-08-26 22:50:51,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 404 places, 447 transitions, 936 flow [2023-08-26 22:50:51,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 447 transitions, 936 flow [2023-08-26 22:50:51,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:50:51,282 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 404 places, 447 transitions, 936 flow [2023-08-26 22:50:51,285 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 404 places, 447 transitions, 936 flow [2023-08-26 22:50:51,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 447 transitions, 936 flow [2023-08-26 22:50:51,513 INFO L124 PetriNetUnfolderBase]: 194/1637 cut-off events. [2023-08-26 22:50:51,513 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-26 22:50:51,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 1637 events. 194/1637 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 10947 event pairs, 0 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 832. Up to 16 conditions per place. [2023-08-26 22:50:51,611 INFO L119 LiptonReduction]: Number of co-enabled transitions 90078 [2023-08-26 22:51:07,036 INFO L134 LiptonReduction]: Checked pairs total: 185849 [2023-08-26 22:51:07,036 INFO L136 LiptonReduction]: Total number of compositions: 399 [2023-08-26 22:51:07,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:51:07,049 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;@5260569d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:51:07,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-26 22:51:07,051 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:51:07,052 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 22:51:07,052 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:51:07,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:51:07,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:51:07,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-26 22:51:07,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:51:07,055 INFO L85 PathProgramCache]: Analyzing trace with hash 53607284, now seen corresponding path program 1 times [2023-08-26 22:51:07,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:51:07,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289535494] [2023-08-26 22:51:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:51:07,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:51:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:51:07,312 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 22:51:07,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:51:07,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289535494] [2023-08-26 22:51:07,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289535494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:51:07,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:51:07,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:51:07,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882961867] [2023-08-26 22:51:07,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:51:07,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:51:07,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:51:07,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:51:07,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:51:07,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 392 out of 846 [2023-08-26 22:51:07,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 144 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 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 22:51:07,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:51:07,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 392 of 846 [2023-08-26 22:51:07,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:51:30,862 INFO L124 PetriNetUnfolderBase]: 270422/377440 cut-off events. [2023-08-26 22:51:30,862 INFO L125 PetriNetUnfolderBase]: For 5314/5314 co-relation queries the response was YES. [2023-08-26 22:51:31,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741840 conditions, 377440 events. 270422/377440 cut-off events. For 5314/5314 co-relation queries the response was YES. Maximal size of possible extension queue 8042. Compared 2889874 event pairs, 182305 based on Foata normal form. 33080/313667 useless extension candidates. Maximal degree in co-relation 680633. Up to 361129 conditions per place. [2023-08-26 22:51:33,058 INFO L140 encePairwiseOnDemand]: 817/846 looper letters, 107 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2023-08-26 22:51:33,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 125 transitions, 510 flow [2023-08-26 22:51:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:51:33,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:51:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1312 transitions. [2023-08-26 22:51:33,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169424743892829 [2023-08-26 22:51:33,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1312 transitions. [2023-08-26 22:51:33,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1312 transitions. [2023-08-26 22:51:33,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:51:33,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1312 transitions. [2023-08-26 22:51:33,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 437.3333333333333) internal successors, (1312), 3 states have internal predecessors, (1312), 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 22:51:33,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 846.0) internal successors, (3384), 4 states have internal predecessors, (3384), 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 22:51:33,091 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 846.0) internal successors, (3384), 4 states have internal predecessors, (3384), 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 22:51:33,092 INFO L175 Difference]: Start difference. First operand has 113 places, 144 transitions, 330 flow. Second operand 3 states and 1312 transitions. [2023-08-26 22:51:33,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 125 transitions, 510 flow [2023-08-26 22:51:33,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 125 transitions, 510 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:51:33,123 INFO L231 Difference]: Finished difference. Result has 113 places, 117 transitions, 284 flow [2023-08-26 22:51:33,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=846, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=113, PETRI_TRANSITIONS=117} [2023-08-26 22:51:33,128 INFO L281 CegarLoopForPetriNet]: 113 programPoint places, 0 predicate places. [2023-08-26 22:51:33,128 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 117 transitions, 284 flow [2023-08-26 22:51:33,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 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 22:51:33,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:51:33,129 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:51:33,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:51:33,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-26 22:51:33,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:51:33,130 INFO L85 PathProgramCache]: Analyzing trace with hash -22847726, now seen corresponding path program 1 times [2023-08-26 22:51:33,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:51:33,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407194175] [2023-08-26 22:51:33,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:51:33,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:51:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:51:33,157 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:51:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:51:33,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:51:33,185 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:51:33,186 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2023-08-26 22:51:33,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 35 remaining) [2023-08-26 22:51:33,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 35 remaining) [2023-08-26 22:51:33,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 35 remaining) [2023-08-26 22:51:33,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 35 remaining) [2023-08-26 22:51:33,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONASSERT (29 of 35 remaining) [2023-08-26 22:51:33,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 35 remaining) [2023-08-26 22:51:33,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 35 remaining) [2023-08-26 22:51:33,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 35 remaining) [2023-08-26 22:51:33,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 35 remaining) [2023-08-26 22:51:33,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr4ASSERT_VIOLATIONASSERT (24 of 35 remaining) [2023-08-26 22:51:33,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 35 remaining) [2023-08-26 22:51:33,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 35 remaining) [2023-08-26 22:51:33,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 35 remaining) [2023-08-26 22:51:33,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 35 remaining) [2023-08-26 22:51:33,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 35 remaining) [2023-08-26 22:51:33,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 35 remaining) [2023-08-26 22:51:33,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 35 remaining) [2023-08-26 22:51:33,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 35 remaining) [2023-08-26 22:51:33,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 35 remaining) [2023-08-26 22:51:33,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 35 remaining) [2023-08-26 22:51:33,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 35 remaining) [2023-08-26 22:51:33,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 35 remaining) [2023-08-26 22:51:33,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 35 remaining) [2023-08-26 22:51:33,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 35 remaining) [2023-08-26 22:51:33,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 35 remaining) [2023-08-26 22:51:33,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 35 remaining) [2023-08-26 22:51:33,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 35 remaining) [2023-08-26 22:51:33,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 35 remaining) [2023-08-26 22:51:33,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONASSERT (5 of 35 remaining) [2023-08-26 22:51:33,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 35 remaining) [2023-08-26 22:51:33,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 35 remaining) [2023-08-26 22:51:33,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 35 remaining) [2023-08-26 22:51:33,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 35 remaining) [2023-08-26 22:51:33,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr4ASSERT_VIOLATIONASSERT (0 of 35 remaining) [2023-08-26 22:51:33,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:51:33,192 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 22:51:33,194 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:51:33,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:51:33,261 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-26 22:51:33,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 608 places, 686 transitions, 1462 flow [2023-08-26 22:51:35,347 INFO L124 PetriNetUnfolderBase]: 1235/8023 cut-off events. [2023-08-26 22:51:35,347 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-26 22:51:35,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8697 conditions, 8023 events. 1235/8023 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 76189 event pairs, 22 based on Foata normal form. 0/6546 useless extension candidates. Maximal degree in co-relation 4968. Up to 192 conditions per place. [2023-08-26 22:51:35,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 608 places, 686 transitions, 1462 flow [2023-08-26 22:51:35,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 608 places, 686 transitions, 1462 flow [2023-08-26 22:51:35,604 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:51:35,605 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 608 places, 686 transitions, 1462 flow [2023-08-26 22:51:35,605 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 608 places, 686 transitions, 1462 flow [2023-08-26 22:51:35,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 608 places, 686 transitions, 1462 flow [2023-08-26 22:51:37,447 INFO L124 PetriNetUnfolderBase]: 1235/8023 cut-off events. [2023-08-26 22:51:37,447 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-26 22:51:37,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8697 conditions, 8023 events. 1235/8023 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 76189 event pairs, 22 based on Foata normal form. 0/6546 useless extension candidates. Maximal degree in co-relation 4968. Up to 192 conditions per place. [2023-08-26 22:51:38,120 INFO L119 LiptonReduction]: Number of co-enabled transitions 292456 [2023-08-26 22:51:55,119 INFO L134 LiptonReduction]: Checked pairs total: 649224 [2023-08-26 22:51:55,119 INFO L136 LiptonReduction]: Total number of compositions: 575 [2023-08-26 22:51:55,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:51:55,123 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;@5260569d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:51:55,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-08-26 22:51:55,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:51:55,125 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-26 22:51:55,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:51:55,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:51:55,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:51:55,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-08-26 22:51:55,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:51:55,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1209801489, now seen corresponding path program 1 times [2023-08-26 22:51:55,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:51:55,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755776606] [2023-08-26 22:51:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:51:55,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:51:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:51:55,182 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 22:51:55,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:51:55,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755776606] [2023-08-26 22:51:55,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755776606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:51:55,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:51:55,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:51:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56784307] [2023-08-26 22:51:55,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:51:55,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:51:55,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:51:55,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:51:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:51:55,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 591 out of 1261 [2023-08-26 22:51:55,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 242 transitions, 574 flow. Second operand has 3 states, 3 states have (on average 592.3333333333334) internal successors, (1777), 3 states have internal predecessors, (1777), 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 22:51:55,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:51:55,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 591 of 1261 [2023-08-26 22:51:55,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand