./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:35:37,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:35:37,358 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:35:37,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:35:37,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:35:37,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:35:37,414 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:35:37,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:35:37,415 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:35:37,415 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:35:37,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:35:37,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:35:37,416 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:35:37,416 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:35:37,417 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:35:37,417 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:35:37,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:35:37,418 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:35:37,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:35:37,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:35:37,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:35:37,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:35:37,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:35:37,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:35:37,418 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:35:37,419 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:35:37,419 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:35:37,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:35:37,419 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:35:37,419 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:35:37,419 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:35:37,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:35:37,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:35:37,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:35:37,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:35:37,421 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:35:37,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:35:37,421 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:35:37,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:35:37,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:35:37,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:35:37,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:35:37,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:35:37,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:35:37,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:35:37,422 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 [2025-03-17 19:35:37,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:35:37,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:35:37,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:35:37,870 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:35:37,870 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:35:37,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2025-03-17 19:35:39,688 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/391253921/b86d523bee1946ab9b3329fc1ee74b49/FLAG4c8418ce2 [2025-03-17 19:35:40,256 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:35:40,257 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2025-03-17 19:35:40,290 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/391253921/b86d523bee1946ab9b3329fc1ee74b49/FLAG4c8418ce2 [2025-03-17 19:35:40,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/391253921/b86d523bee1946ab9b3329fc1ee74b49 [2025-03-17 19:35:40,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:35:40,338 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:35:40,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:35:40,340 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:35:40,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:35:40,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:35:40" (1/1) ... [2025-03-17 19:35:40,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453f4aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:40, skipping insertion in model container [2025-03-17 19:35:40,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:35:40" (1/1) ... [2025-03-17 19:35:40,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:35:40,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:35:40,961 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:35:41,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:35:41,174 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:35:41,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41 WrapperNode [2025-03-17 19:35:41,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:35:41,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:35:41,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:35:41,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:35:41,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41" (1/1) ... [2025-03-17 19:35:41,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41" (1/1) ... [2025-03-17 19:35:41,278 INFO L138 Inliner]: procedures = 364, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 117 [2025-03-17 19:35:41,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:35:41,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:35:41,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:35:41,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:35:41,291 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41" (1/1) ... [2025-03-17 19:35:41,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41" (1/1) ... [2025-03-17 19:35:41,297 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41" (1/1) ... [2025-03-17 19:35:41,329 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 19:35:41,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41" (1/1) ... [2025-03-17 19:35:41,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41" (1/1) ... [2025-03-17 19:35:41,345 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41" (1/1) ... [2025-03-17 19:35:41,346 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41" (1/1) ... [2025-03-17 19:35:41,347 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41" (1/1) ... [2025-03-17 19:35:41,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41" (1/1) ... [2025-03-17 19:35:41,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:35:41,355 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:35:41,355 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:35:41,355 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:35:41,356 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41" (1/1) ... [2025-03-17 19:35:41,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:35:41,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:35:41,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:35:41,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:35:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:35:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:35:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2025-03-17 19:35:41,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2025-03-17 19:35:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:35:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:35:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:35:41,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:35:41,433 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:35:41,604 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:35:41,609 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:35:41,849 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:35:41,851 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:35:42,165 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:35:42,171 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:35:42,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:35:42 BoogieIcfgContainer [2025-03-17 19:35:42,171 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:35:42,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:35:42,173 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:35:42,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:35:42,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:35:40" (1/3) ... [2025-03-17 19:35:42,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c01deab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:35:42, skipping insertion in model container [2025-03-17 19:35:42,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:35:41" (2/3) ... [2025-03-17 19:35:42,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c01deab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:35:42, skipping insertion in model container [2025-03-17 19:35:42,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:35:42" (3/3) ... [2025-03-17 19:35:42,180 INFO L128 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-3.i [2025-03-17 19:35:42,194 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:35:42,195 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pthread-demo-datarace-3.i that has 2 procedures, 29 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-03-17 19:35:42,196 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:35:42,268 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 19:35:42,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 67 flow [2025-03-17 19:35:42,342 INFO L124 PetriNetUnfolderBase]: 2/29 cut-off events. [2025-03-17 19:35:42,347 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:35:42,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 29 events. 2/29 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 63 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2025-03-17 19:35:42,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 30 transitions, 67 flow [2025-03-17 19:35:42,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 27 transitions, 57 flow [2025-03-17 19:35:42,401 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:35:42,417 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1c2dee9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:35:42,417 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-17 19:35:42,423 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:35:42,427 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2025-03-17 19:35:42,428 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:35:42,428 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:42,428 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:35:42,429 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:42,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:42,433 INFO L85 PathProgramCache]: Analyzing trace with hash 318742366, now seen corresponding path program 1 times [2025-03-17 19:35:42,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:42,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602238038] [2025-03-17 19:35:42,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:42,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:42,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:35:42,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:35:42,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:42,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:42,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:42,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602238038] [2025-03-17 19:35:42,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602238038] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:35:42,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:35:42,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:35:42,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600333897] [2025-03-17 19:35:42,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:35:42,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:35:42,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:42,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:35:42,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:35:42,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 30 [2025-03-17 19:35:42,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2025-03-17 19:35:42,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:42,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 30 [2025-03-17 19:35:42,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:43,121 INFO L124 PetriNetUnfolderBase]: 40/136 cut-off events. [2025-03-17 19:35:43,122 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:35:43,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 136 events. 40/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 571 event pairs, 4 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 212. Up to 66 conditions per place. [2025-03-17 19:35:43,126 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 17 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2025-03-17 19:35:43,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 111 flow [2025-03-17 19:35:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:35:43,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:35:43,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2025-03-17 19:35:43,145 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2025-03-17 19:35:43,165 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 57 flow. Second operand 3 states and 67 transitions. [2025-03-17 19:35:43,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 111 flow [2025-03-17 19:35:43,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:35:43,179 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 77 flow [2025-03-17 19:35:43,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2025-03-17 19:35:43,188 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2025-03-17 19:35:43,188 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 77 flow [2025-03-17 19:35:43,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2025-03-17 19:35:43,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:43,188 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:35:43,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:35:43,189 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_dataraceErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:43,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:43,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1291433316, now seen corresponding path program 1 times [2025-03-17 19:35:43,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:43,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272248976] [2025-03-17 19:35:43,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:43,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:43,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:35:43,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:35:43,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:43,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:43,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:43,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272248976] [2025-03-17 19:35:43,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272248976] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:35:43,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:35:43,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:35:43,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549715377] [2025-03-17 19:35:43,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:35:43,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:35:43,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:43,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:35:43,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:35:43,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-03-17 19:35:43,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2025-03-17 19:35:43,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:43,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-03-17 19:35:43,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:43,652 INFO L124 PetriNetUnfolderBase]: 54/162 cut-off events. [2025-03-17 19:35:43,652 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-03-17 19:35:43,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 162 events. 54/162 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 723 event pairs, 12 based on Foata normal form. 6/126 useless extension candidates. Maximal degree in co-relation 312. Up to 89 conditions per place. [2025-03-17 19:35:43,654 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 22 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2025-03-17 19:35:43,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 168 flow [2025-03-17 19:35:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:35:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:35:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2025-03-17 19:35:43,655 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6533333333333333 [2025-03-17 19:35:43,655 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 77 flow. Second operand 5 states and 98 transitions. [2025-03-17 19:35:43,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 168 flow [2025-03-17 19:35:43,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:35:43,657 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 120 flow [2025-03-17 19:35:43,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2025-03-17 19:35:43,657 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2025-03-17 19:35:43,657 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 120 flow [2025-03-17 19:35:43,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2025-03-17 19:35:43,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:43,658 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:35:43,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:35:43,658 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:43,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:43,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1368746967, now seen corresponding path program 1 times [2025-03-17 19:35:43,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:43,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390530737] [2025-03-17 19:35:43,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:43,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:43,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:35:43,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:35:43,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:43,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:43,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:43,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390530737] [2025-03-17 19:35:43,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390530737] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:35:43,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:35:43,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:35:43,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395862225] [2025-03-17 19:35:43,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:35:43,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:35:43,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:43,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:35:43,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:35:43,773 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-03-17 19:35:43,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2025-03-17 19:35:43,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:43,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-03-17 19:35:43,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:43,925 INFO L124 PetriNetUnfolderBase]: 101/255 cut-off events. [2025-03-17 19:35:43,926 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2025-03-17 19:35:43,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 255 events. 101/255 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1213 event pairs, 22 based on Foata normal form. 17/235 useless extension candidates. Maximal degree in co-relation 592. Up to 132 conditions per place. [2025-03-17 19:35:43,929 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 42 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2025-03-17 19:35:43,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 291 flow [2025-03-17 19:35:43,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:35:43,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:35:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2025-03-17 19:35:43,932 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2025-03-17 19:35:43,932 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 120 flow. Second operand 4 states and 81 transitions. [2025-03-17 19:35:43,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 291 flow [2025-03-17 19:35:43,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:35:43,933 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 140 flow [2025-03-17 19:35:43,934 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2025-03-17 19:35:43,934 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2025-03-17 19:35:43,934 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 140 flow [2025-03-17 19:35:43,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2025-03-17 19:35:43,934 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:43,934 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:35:43,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:35:43,935 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread_function_dataraceErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:43,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:43,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1597699743, now seen corresponding path program 1 times [2025-03-17 19:35:43,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:43,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341280809] [2025-03-17 19:35:43,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:43,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:43,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:35:43,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:35:43,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:43,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:44,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:44,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341280809] [2025-03-17 19:35:44,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341280809] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:35:44,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:35:44,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:35:44,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953871576] [2025-03-17 19:35:44,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:35:44,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:35:44,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:44,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:35:44,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:35:44,098 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-03-17 19:35:44,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-17 19:35:44,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:44,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-03-17 19:35:44,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:44,364 INFO L124 PetriNetUnfolderBase]: 120/380 cut-off events. [2025-03-17 19:35:44,368 INFO L125 PetriNetUnfolderBase]: For 225/246 co-relation queries the response was YES. [2025-03-17 19:35:44,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 380 events. 120/380 cut-off events. For 225/246 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2097 event pairs, 19 based on Foata normal form. 16/340 useless extension candidates. Maximal degree in co-relation 946. Up to 104 conditions per place. [2025-03-17 19:35:44,374 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 42 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2025-03-17 19:35:44,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 363 flow [2025-03-17 19:35:44,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:35:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:35:44,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2025-03-17 19:35:44,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7055555555555556 [2025-03-17 19:35:44,378 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 140 flow. Second operand 6 states and 127 transitions. [2025-03-17 19:35:44,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 363 flow [2025-03-17 19:35:44,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:35:44,380 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 218 flow [2025-03-17 19:35:44,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2025-03-17 19:35:44,388 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2025-03-17 19:35:44,388 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 218 flow [2025-03-17 19:35:44,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-17 19:35:44,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:44,439 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:35:44,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:35:44,439 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread_function_dataraceErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:44,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:44,439 INFO L85 PathProgramCache]: Analyzing trace with hash 336575912, now seen corresponding path program 1 times [2025-03-17 19:35:44,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:44,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31671727] [2025-03-17 19:35:44,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:44,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:44,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:35:44,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:35:44,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:44,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:44,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:44,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31671727] [2025-03-17 19:35:44,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31671727] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:35:44,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:35:44,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:35:44,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786415371] [2025-03-17 19:35:44,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:35:44,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:35:44,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:44,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:35:44,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:35:44,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-03-17 19:35:44,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-17 19:35:44,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:44,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-03-17 19:35:44,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:44,803 INFO L124 PetriNetUnfolderBase]: 134/462 cut-off events. [2025-03-17 19:35:44,804 INFO L125 PetriNetUnfolderBase]: For 756/771 co-relation queries the response was YES. [2025-03-17 19:35:44,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 462 events. 134/462 cut-off events. For 756/771 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2697 event pairs, 20 based on Foata normal form. 27/469 useless extension candidates. Maximal degree in co-relation 1308. Up to 203 conditions per place. [2025-03-17 19:35:44,813 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 37 selfloop transitions, 20 changer transitions 0/70 dead transitions. [2025-03-17 19:35:44,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 477 flow [2025-03-17 19:35:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:35:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:35:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2025-03-17 19:35:44,819 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6619047619047619 [2025-03-17 19:35:44,820 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 218 flow. Second operand 7 states and 139 transitions. [2025-03-17 19:35:44,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 477 flow [2025-03-17 19:35:44,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 465 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-17 19:35:44,832 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 370 flow [2025-03-17 19:35:44,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=370, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2025-03-17 19:35:44,834 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2025-03-17 19:35:44,834 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 370 flow [2025-03-17 19:35:44,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-17 19:35:44,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:44,839 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:35:44,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:35:44,839 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:44,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:44,839 INFO L85 PathProgramCache]: Analyzing trace with hash 623110566, now seen corresponding path program 1 times [2025-03-17 19:35:44,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:44,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187444024] [2025-03-17 19:35:44,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:44,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:44,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:35:44,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:35:44,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:44,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:44,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:44,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187444024] [2025-03-17 19:35:44,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187444024] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:35:44,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:35:44,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:35:44,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068774693] [2025-03-17 19:35:44,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:35:44,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:35:44,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:44,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:35:44,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:35:44,981 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2025-03-17 19:35:44,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2025-03-17 19:35:44,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:44,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2025-03-17 19:35:44,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:45,188 INFO L124 PetriNetUnfolderBase]: 186/568 cut-off events. [2025-03-17 19:35:45,203 INFO L125 PetriNetUnfolderBase]: For 1597/1673 co-relation queries the response was YES. [2025-03-17 19:35:45,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1928 conditions, 568 events. 186/568 cut-off events. For 1597/1673 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3522 event pairs, 52 based on Foata normal form. 47/593 useless extension candidates. Maximal degree in co-relation 1902. Up to 282 conditions per place. [2025-03-17 19:35:45,215 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 58 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2025-03-17 19:35:45,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 667 flow [2025-03-17 19:35:45,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:35:45,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:35:45,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-03-17 19:35:45,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2025-03-17 19:35:45,217 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 370 flow. Second operand 4 states and 82 transitions. [2025-03-17 19:35:45,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 667 flow [2025-03-17 19:35:45,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 642 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-03-17 19:35:45,232 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 374 flow [2025-03-17 19:35:45,232 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2025-03-17 19:35:45,233 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2025-03-17 19:35:45,233 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 374 flow [2025-03-17 19:35:45,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2025-03-17 19:35:45,233 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:45,233 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:35:45,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:35:45,233 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:45,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:45,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1289439265, now seen corresponding path program 1 times [2025-03-17 19:35:45,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:45,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847876011] [2025-03-17 19:35:45,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:45,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:45,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:35:45,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:35:45,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:45,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:45,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:45,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:45,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847876011] [2025-03-17 19:35:45,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847876011] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:35:45,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:35:45,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:35:45,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170890602] [2025-03-17 19:35:45,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:35:45,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:35:45,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:45,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:35:45,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:35:45,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-03-17 19:35:45,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2025-03-17 19:35:45,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:45,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-03-17 19:35:45,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:45,568 INFO L124 PetriNetUnfolderBase]: 124/443 cut-off events. [2025-03-17 19:35:45,568 INFO L125 PetriNetUnfolderBase]: For 1201/1218 co-relation queries the response was YES. [2025-03-17 19:35:45,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 443 events. 124/443 cut-off events. For 1201/1218 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2693 event pairs, 29 based on Foata normal form. 38/469 useless extension candidates. Maximal degree in co-relation 1473. Up to 228 conditions per place. [2025-03-17 19:35:45,572 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 40 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2025-03-17 19:35:45,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 516 flow [2025-03-17 19:35:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 19:35:45,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 19:35:45,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2025-03-17 19:35:45,574 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5708333333333333 [2025-03-17 19:35:45,574 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 374 flow. Second operand 8 states and 137 transitions. [2025-03-17 19:35:45,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 516 flow [2025-03-17 19:35:45,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 491 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-03-17 19:35:45,578 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 334 flow [2025-03-17 19:35:45,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=334, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2025-03-17 19:35:45,579 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2025-03-17 19:35:45,580 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 334 flow [2025-03-17 19:35:45,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2025-03-17 19:35:45,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:45,580 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:35:45,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:35:45,580 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:45,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash 891232152, now seen corresponding path program 1 times [2025-03-17 19:35:45,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:45,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818559331] [2025-03-17 19:35:45,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:45,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:45,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:35:45,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:35:45,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:45,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:45,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:45,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818559331] [2025-03-17 19:35:45,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818559331] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:35:45,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:35:45,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:35:45,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845835678] [2025-03-17 19:35:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:35:45,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:35:45,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:45,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:35:45,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:35:45,771 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-03-17 19:35:45,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2025-03-17 19:35:45,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:45,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-03-17 19:35:45,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:46,098 INFO L124 PetriNetUnfolderBase]: 158/540 cut-off events. [2025-03-17 19:35:46,098 INFO L125 PetriNetUnfolderBase]: For 1265/1308 co-relation queries the response was YES. [2025-03-17 19:35:46,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 540 events. 158/540 cut-off events. For 1265/1308 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3265 event pairs, 20 based on Foata normal form. 39/571 useless extension candidates. Maximal degree in co-relation 1782. Up to 213 conditions per place. [2025-03-17 19:35:46,103 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 47 selfloop transitions, 25 changer transitions 0/86 dead transitions. [2025-03-17 19:35:46,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 687 flow [2025-03-17 19:35:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:35:46,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:35:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2025-03-17 19:35:46,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.62 [2025-03-17 19:35:46,107 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 334 flow. Second operand 10 states and 186 transitions. [2025-03-17 19:35:46,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 687 flow [2025-03-17 19:35:46,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 674 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:35:46,128 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 499 flow [2025-03-17 19:35:46,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=499, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2025-03-17 19:35:46,135 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2025-03-17 19:35:46,135 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 499 flow [2025-03-17 19:35:46,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2025-03-17 19:35:46,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:46,135 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:35:46,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:35:46,135 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:46,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:46,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2012067538, now seen corresponding path program 1 times [2025-03-17 19:35:46,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:46,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752530184] [2025-03-17 19:35:46,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:46,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:46,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:35:46,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:35:46,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:46,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:46,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:46,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752530184] [2025-03-17 19:35:46,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752530184] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:35:46,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419811604] [2025-03-17 19:35:46,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:46,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:35:46,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:35:46,247 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) [2025-03-17 19:35:46,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:35:46,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:35:46,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:35:46,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:46,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:46,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:35:46,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:35:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:46,581 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:35:46,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419811604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:35:46,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:35:46,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-17 19:35:46,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109975906] [2025-03-17 19:35:46,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:35:46,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:35:46,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:46,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:35:46,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:35:46,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2025-03-17 19:35:46,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-17 19:35:46,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:46,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2025-03-17 19:35:46,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:46,830 INFO L124 PetriNetUnfolderBase]: 318/807 cut-off events. [2025-03-17 19:35:46,834 INFO L125 PetriNetUnfolderBase]: For 3275/3310 co-relation queries the response was YES. [2025-03-17 19:35:46,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3269 conditions, 807 events. 318/807 cut-off events. For 3275/3310 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4930 event pairs, 52 based on Foata normal form. 41/811 useless extension candidates. Maximal degree in co-relation 3239. Up to 362 conditions per place. [2025-03-17 19:35:46,844 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 76 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2025-03-17 19:35:46,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 945 flow [2025-03-17 19:35:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:35:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:35:46,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-03-17 19:35:46,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.575 [2025-03-17 19:35:46,848 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 499 flow. Second operand 4 states and 69 transitions. [2025-03-17 19:35:46,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 945 flow [2025-03-17 19:35:46,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 92 transitions, 869 flow, removed 24 selfloop flow, removed 5 redundant places. [2025-03-17 19:35:46,859 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 463 flow [2025-03-17 19:35:46,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=463, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2025-03-17 19:35:46,861 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2025-03-17 19:35:46,861 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 463 flow [2025-03-17 19:35:46,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-17 19:35:46,861 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:46,861 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:35:46,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 19:35:47,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:35:47,066 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:47,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:47,069 INFO L85 PathProgramCache]: Analyzing trace with hash -2050415501, now seen corresponding path program 1 times [2025-03-17 19:35:47,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:47,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106172211] [2025-03-17 19:35:47,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:47,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:47,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:35:47,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:35:47,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:47,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:35:47,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:47,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106172211] [2025-03-17 19:35:47,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106172211] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:35:47,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:35:47,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:35:47,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940927606] [2025-03-17 19:35:47,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:35:47,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:35:47,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:47,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:35:47,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:35:47,212 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2025-03-17 19:35:47,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 463 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-03-17 19:35:47,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:47,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2025-03-17 19:35:47,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:47,430 INFO L124 PetriNetUnfolderBase]: 286/761 cut-off events. [2025-03-17 19:35:47,432 INFO L125 PetriNetUnfolderBase]: For 2623/2653 co-relation queries the response was YES. [2025-03-17 19:35:47,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3020 conditions, 761 events. 286/761 cut-off events. For 2623/2653 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4583 event pairs, 36 based on Foata normal form. 44/801 useless extension candidates. Maximal degree in co-relation 2991. Up to 305 conditions per place. [2025-03-17 19:35:47,441 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 86 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2025-03-17 19:35:47,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 103 transitions, 1011 flow [2025-03-17 19:35:47,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:35:47,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:35:47,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-03-17 19:35:47,444 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.575 [2025-03-17 19:35:47,444 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 463 flow. Second operand 4 states and 69 transitions. [2025-03-17 19:35:47,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 103 transitions, 1011 flow [2025-03-17 19:35:47,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 1001 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:35:47,466 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 469 flow [2025-03-17 19:35:47,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=469, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2025-03-17 19:35:47,468 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2025-03-17 19:35:47,468 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 469 flow [2025-03-17 19:35:47,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-03-17 19:35:47,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:47,468 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:35:47,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:35:47,469 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread_function_dataraceErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:47,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:47,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1474183325, now seen corresponding path program 1 times [2025-03-17 19:35:47,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:47,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854809835] [2025-03-17 19:35:47,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:47,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:47,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:35:47,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:35:47,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:47,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:47,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:47,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854809835] [2025-03-17 19:35:47,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854809835] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:35:47,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498550151] [2025-03-17 19:35:47,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:47,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:35:47,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:35:47,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:35:47,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:35:47,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:35:47,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:35:47,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:47,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:47,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:35:47,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:35:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:47,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:35:48,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:48,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498550151] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:35:48,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:35:48,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:35:48,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762150719] [2025-03-17 19:35:48,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:35:48,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 19:35:48,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:48,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 19:35:48,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-03-17 19:35:48,117 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-03-17 19:35:48,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 469 flow. Second operand has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 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) [2025-03-17 19:35:48,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:48,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-03-17 19:35:48,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:48,545 INFO L124 PetriNetUnfolderBase]: 261/880 cut-off events. [2025-03-17 19:35:48,545 INFO L125 PetriNetUnfolderBase]: For 4416/4444 co-relation queries the response was YES. [2025-03-17 19:35:48,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3564 conditions, 880 events. 261/880 cut-off events. For 4416/4444 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5498 event pairs, 11 based on Foata normal form. 94/970 useless extension candidates. Maximal degree in co-relation 3535. Up to 226 conditions per place. [2025-03-17 19:35:48,551 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 64 selfloop transitions, 71 changer transitions 0/148 dead transitions. [2025-03-17 19:35:48,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 148 transitions, 1497 flow [2025-03-17 19:35:48,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-17 19:35:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-17 19:35:48,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 403 transitions. [2025-03-17 19:35:48,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6106060606060606 [2025-03-17 19:35:48,554 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 469 flow. Second operand 22 states and 403 transitions. [2025-03-17 19:35:48,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 148 transitions, 1497 flow [2025-03-17 19:35:48,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 1464 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:35:48,563 INFO L231 Difference]: Finished difference. Result has 100 places, 109 transitions, 1265 flow [2025-03-17 19:35:48,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1265, PETRI_PLACES=100, PETRI_TRANSITIONS=109} [2025-03-17 19:35:48,564 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 71 predicate places. [2025-03-17 19:35:48,564 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 109 transitions, 1265 flow [2025-03-17 19:35:48,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 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) [2025-03-17 19:35:48,564 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:48,564 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:35:48,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:35:48,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-17 19:35:48,768 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:48,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:48,768 INFO L85 PathProgramCache]: Analyzing trace with hash 373245339, now seen corresponding path program 1 times [2025-03-17 19:35:48,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:48,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193436302] [2025-03-17 19:35:48,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:48,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:48,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:35:48,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:35:48,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:48,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:48,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:48,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193436302] [2025-03-17 19:35:48,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193436302] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:35:48,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654560273] [2025-03-17 19:35:48,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:48,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:35:48,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:35:48,949 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:35:48,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:35:49,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:35:49,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:35:49,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:49,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:49,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:35:49,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:35:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:49,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:35:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:49,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654560273] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:35:49,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:35:49,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-03-17 19:35:49,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440817032] [2025-03-17 19:35:49,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:35:49,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 19:35:49,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:49,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 19:35:49,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2025-03-17 19:35:49,364 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-03-17 19:35:49,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 109 transitions, 1265 flow. Second operand has 14 states, 14 states have (on average 14.857142857142858) internal successors, (208), 14 states have internal predecessors, (208), 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) [2025-03-17 19:35:49,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:49,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-03-17 19:35:49,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:50,383 INFO L124 PetriNetUnfolderBase]: 565/1987 cut-off events. [2025-03-17 19:35:50,384 INFO L125 PetriNetUnfolderBase]: For 21221/21319 co-relation queries the response was YES. [2025-03-17 19:35:50,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8836 conditions, 1987 events. 565/1987 cut-off events. For 21221/21319 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 15749 event pairs, 21 based on Foata normal form. 195/2176 useless extension candidates. Maximal degree in co-relation 8791. Up to 483 conditions per place. [2025-03-17 19:35:50,400 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 140 selfloop transitions, 165 changer transitions 0/318 dead transitions. [2025-03-17 19:35:50,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 318 transitions, 4019 flow [2025-03-17 19:35:50,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-17 19:35:50,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-03-17 19:35:50,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 630 transitions. [2025-03-17 19:35:50,406 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2025-03-17 19:35:50,407 INFO L175 Difference]: Start difference. First operand has 100 places, 109 transitions, 1265 flow. Second operand 33 states and 630 transitions. [2025-03-17 19:35:50,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 318 transitions, 4019 flow [2025-03-17 19:35:50,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 318 transitions, 3454 flow, removed 270 selfloop flow, removed 5 redundant places. [2025-03-17 19:35:50,442 INFO L231 Difference]: Finished difference. Result has 143 places, 219 transitions, 2847 flow [2025-03-17 19:35:50,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2847, PETRI_PLACES=143, PETRI_TRANSITIONS=219} [2025-03-17 19:35:50,443 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2025-03-17 19:35:50,444 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 219 transitions, 2847 flow [2025-03-17 19:35:50,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.857142857142858) internal successors, (208), 14 states have internal predecessors, (208), 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) [2025-03-17 19:35:50,444 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:50,444 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:35:50,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:35:50,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:35:50,649 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:50,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:50,649 INFO L85 PathProgramCache]: Analyzing trace with hash -646263587, now seen corresponding path program 1 times [2025-03-17 19:35:50,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:50,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097330351] [2025-03-17 19:35:50,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:50,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:50,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:35:50,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:35:50,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:50,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:50,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:50,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097330351] [2025-03-17 19:35:50,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097330351] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:35:50,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038806208] [2025-03-17 19:35:50,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:50,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:35:50,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:35:50,813 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:35:50,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:35:50,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:35:50,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:35:50,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:50,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:50,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:35:50,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:35:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:50,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:35:50,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038806208] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:35:50,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:35:50,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:35:50,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60929302] [2025-03-17 19:35:50,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:35:50,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:35:50,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:50,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:35:50,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:35:50,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2025-03-17 19:35:50,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 219 transitions, 2847 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2025-03-17 19:35:50,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:50,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2025-03-17 19:35:50,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:51,602 INFO L124 PetriNetUnfolderBase]: 686/2133 cut-off events. [2025-03-17 19:35:51,602 INFO L125 PetriNetUnfolderBase]: For 32176/32230 co-relation queries the response was YES. [2025-03-17 19:35:51,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11172 conditions, 2133 events. 686/2133 cut-off events. For 32176/32230 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 16707 event pairs, 75 based on Foata normal form. 103/2168 useless extension candidates. Maximal degree in co-relation 11110. Up to 800 conditions per place. [2025-03-17 19:35:51,619 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 274 selfloop transitions, 5 changer transitions 0/291 dead transitions. [2025-03-17 19:35:51,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 291 transitions, 4635 flow [2025-03-17 19:35:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:35:51,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:35:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-03-17 19:35:51,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-03-17 19:35:51,619 INFO L175 Difference]: Start difference. First operand has 143 places, 219 transitions, 2847 flow. Second operand 6 states and 108 transitions. [2025-03-17 19:35:51,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 291 transitions, 4635 flow [2025-03-17 19:35:51,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 291 transitions, 3774 flow, removed 372 selfloop flow, removed 12 redundant places. [2025-03-17 19:35:51,767 INFO L231 Difference]: Finished difference. Result has 135 places, 218 transitions, 2257 flow [2025-03-17 19:35:51,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2257, PETRI_PLACES=135, PETRI_TRANSITIONS=218} [2025-03-17 19:35:51,768 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2025-03-17 19:35:51,768 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 218 transitions, 2257 flow [2025-03-17 19:35:51,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2025-03-17 19:35:51,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:51,768 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:35:51,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 19:35:51,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:35:51,969 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_dataraceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:51,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:51,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1440665584, now seen corresponding path program 1 times [2025-03-17 19:35:51,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:51,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78724432] [2025-03-17 19:35:51,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:51,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:52,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:35:52,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:35:52,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:52,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:35:52,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:52,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78724432] [2025-03-17 19:35:52,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78724432] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:35:52,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:35:52,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:35:52,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615045897] [2025-03-17 19:35:52,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:35:52,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:35:52,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:52,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:35:52,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:35:52,111 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-03-17 19:35:52,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 218 transitions, 2257 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-17 19:35:52,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:52,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-03-17 19:35:52,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:52,754 INFO L124 PetriNetUnfolderBase]: 735/2201 cut-off events. [2025-03-17 19:35:52,754 INFO L125 PetriNetUnfolderBase]: For 28385/28446 co-relation queries the response was YES. [2025-03-17 19:35:52,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10479 conditions, 2201 events. 735/2201 cut-off events. For 28385/28446 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 17048 event pairs, 87 based on Foata normal form. 110/2281 useless extension candidates. Maximal degree in co-relation 10419. Up to 983 conditions per place. [2025-03-17 19:35:52,788 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 259 selfloop transitions, 6 changer transitions 0/276 dead transitions. [2025-03-17 19:35:52,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 276 transitions, 3497 flow [2025-03-17 19:35:52,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:35:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:35:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2025-03-17 19:35:52,792 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2025-03-17 19:35:52,792 INFO L175 Difference]: Start difference. First operand has 135 places, 218 transitions, 2257 flow. Second operand 4 states and 68 transitions. [2025-03-17 19:35:52,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 276 transitions, 3497 flow [2025-03-17 19:35:52,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 276 transitions, 3488 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-17 19:35:52,865 INFO L231 Difference]: Finished difference. Result has 134 places, 218 transitions, 2264 flow [2025-03-17 19:35:52,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2264, PETRI_PLACES=134, PETRI_TRANSITIONS=218} [2025-03-17 19:35:52,867 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2025-03-17 19:35:52,870 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 218 transitions, 2264 flow [2025-03-17 19:35:52,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-17 19:35:52,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:52,871 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:35:52,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 19:35:52,871 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread_function_dataraceErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:52,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:52,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1370074129, now seen corresponding path program 1 times [2025-03-17 19:35:52,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:52,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228948084] [2025-03-17 19:35:52,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:52,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:52,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 19:35:52,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 19:35:52,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:52,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:53,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:53,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228948084] [2025-03-17 19:35:53,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228948084] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:35:53,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121569524] [2025-03-17 19:35:53,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:53,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:35:53,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:35:53,100 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:35:53,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:35:53,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 19:35:53,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 19:35:53,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:53,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:53,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 19:35:53,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:35:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:53,362 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:35:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:53,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121569524] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:35:53,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:35:53,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-17 19:35:53,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419110903] [2025-03-17 19:35:53,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:35:53,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 19:35:53,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:53,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 19:35:53,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2025-03-17 19:35:53,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-03-17 19:35:53,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 218 transitions, 2264 flow. Second operand has 19 states, 19 states have (on average 14.789473684210526) internal successors, (281), 19 states have internal predecessors, (281), 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) [2025-03-17 19:35:53,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:53,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-03-17 19:35:53,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:35:56,058 INFO L124 PetriNetUnfolderBase]: 1312/4645 cut-off events. [2025-03-17 19:35:56,061 INFO L125 PetriNetUnfolderBase]: For 126881/126957 co-relation queries the response was YES. [2025-03-17 19:35:56,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21108 conditions, 4645 events. 1312/4645 cut-off events. For 126881/126957 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 41532 event pairs, 14 based on Foata normal form. 473/5110 useless extension candidates. Maximal degree in co-relation 21049. Up to 973 conditions per place. [2025-03-17 19:35:56,140 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 237 selfloop transitions, 415 changer transitions 0/664 dead transitions. [2025-03-17 19:35:56,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 664 transitions, 8388 flow [2025-03-17 19:35:56,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-03-17 19:35:56,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-03-17 19:35:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1173 transitions. [2025-03-17 19:35:56,144 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6409836065573771 [2025-03-17 19:35:56,144 INFO L175 Difference]: Start difference. First operand has 134 places, 218 transitions, 2264 flow. Second operand 61 states and 1173 transitions. [2025-03-17 19:35:56,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 664 transitions, 8388 flow [2025-03-17 19:35:56,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 664 transitions, 8273 flow, removed 26 selfloop flow, removed 2 redundant places. [2025-03-17 19:35:56,296 INFO L231 Difference]: Finished difference. Result has 228 places, 478 transitions, 7142 flow [2025-03-17 19:35:56,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=7142, PETRI_PLACES=228, PETRI_TRANSITIONS=478} [2025-03-17 19:35:56,297 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 199 predicate places. [2025-03-17 19:35:56,297 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 478 transitions, 7142 flow [2025-03-17 19:35:56,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.789473684210526) internal successors, (281), 19 states have internal predecessors, (281), 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) [2025-03-17 19:35:56,297 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:35:56,297 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:35:56,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 19:35:56,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-17 19:35:56,498 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:35:56,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:35:56,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1047584777, now seen corresponding path program 1 times [2025-03-17 19:35:56,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:35:56,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046024810] [2025-03-17 19:35:56,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:56,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:35:56,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-17 19:35:56,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-17 19:35:56,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:56,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:56,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:35:56,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046024810] [2025-03-17 19:35:56,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046024810] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:35:56,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744805020] [2025-03-17 19:35:56,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:35:56,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:35:56,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:35:56,918 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:35:56,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:35:57,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-17 19:35:57,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-17 19:35:57,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:35:57,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:35:57,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 19:35:57,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:35:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:57,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:35:57,503 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:35:57,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744805020] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:35:57,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:35:57,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2025-03-17 19:35:57,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471677464] [2025-03-17 19:35:57,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:35:57,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-17 19:35:57,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:35:57,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-17 19:35:57,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2025-03-17 19:35:57,531 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-03-17 19:35:57,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 478 transitions, 7142 flow. Second operand has 30 states, 30 states have (on average 14.666666666666666) internal successors, (440), 30 states have internal predecessors, (440), 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) [2025-03-17 19:35:57,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:35:57,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-03-17 19:35:57,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:36:05,838 INFO L124 PetriNetUnfolderBase]: 4348/16213 cut-off events. [2025-03-17 19:36:05,838 INFO L125 PetriNetUnfolderBase]: For 1578401/1578540 co-relation queries the response was YES. [2025-03-17 19:36:05,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83580 conditions, 16213 events. 4348/16213 cut-off events. For 1578401/1578540 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 179028 event pairs, 18 based on Foata normal form. 1364/17570 useless extension candidates. Maximal degree in co-relation 83483. Up to 3825 conditions per place. [2025-03-17 19:36:06,119 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 609 selfloop transitions, 1334 changer transitions 0/1955 dead transitions. [2025-03-17 19:36:06,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 1955 transitions, 31652 flow [2025-03-17 19:36:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2025-03-17 19:36:06,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2025-03-17 19:36:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 2733 transitions. [2025-03-17 19:36:06,136 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6649635036496351 [2025-03-17 19:36:06,136 INFO L175 Difference]: Start difference. First operand has 228 places, 478 transitions, 7142 flow. Second operand 137 states and 2733 transitions. [2025-03-17 19:36:06,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 1955 transitions, 31652 flow [2025-03-17 19:36:08,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 1955 transitions, 25963 flow, removed 2815 selfloop flow, removed 9 redundant places. [2025-03-17 19:36:08,215 INFO L231 Difference]: Finished difference. Result has 440 places, 1445 transitions, 22123 flow [2025-03-17 19:36:08,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=5703, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=432, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=137, PETRI_FLOW=22123, PETRI_PLACES=440, PETRI_TRANSITIONS=1445} [2025-03-17 19:36:08,217 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 411 predicate places. [2025-03-17 19:36:08,217 INFO L471 AbstractCegarLoop]: Abstraction has has 440 places, 1445 transitions, 22123 flow [2025-03-17 19:36:08,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 14.666666666666666) internal successors, (440), 30 states have internal predecessors, (440), 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) [2025-03-17 19:36:08,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:36:08,218 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:36:08,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 19:36:08,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-17 19:36:08,459 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread_function_dataraceErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:36:08,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:36:08,461 INFO L85 PathProgramCache]: Analyzing trace with hash 912969925, now seen corresponding path program 2 times [2025-03-17 19:36:08,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:36:08,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641070202] [2025-03-17 19:36:08,461 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:36:08,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:36:08,480 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 68 statements into 2 equivalence classes. [2025-03-17 19:36:08,508 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 19:36:08,515 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:36:08,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:36:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:36:08,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:36:08,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641070202] [2025-03-17 19:36:08,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641070202] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:36:08,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220340375] [2025-03-17 19:36:08,998 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:36:08,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:36:08,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:36:09,004 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:36:09,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 19:36:09,132 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 68 statements into 2 equivalence classes. [2025-03-17 19:36:09,162 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 19:36:09,162 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:36:09,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:36:09,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-17 19:36:09,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:36:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:36:09,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:36:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:36:09,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220340375] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:36:09,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:36:09,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2025-03-17 19:36:09,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420316602] [2025-03-17 19:36:09,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:36:09,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-17 19:36:09,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:36:09,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-17 19:36:09,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=757, Unknown=0, NotChecked=0, Total=1190 [2025-03-17 19:36:09,585 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-03-17 19:36:09,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 1445 transitions, 22123 flow. Second operand has 35 states, 35 states have (on average 14.914285714285715) internal successors, (522), 35 states have internal predecessors, (522), 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) [2025-03-17 19:36:09,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:36:09,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-03-17 19:36:09,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:36:30,553 INFO L124 PetriNetUnfolderBase]: 13492/48897 cut-off events. [2025-03-17 19:36:30,553 INFO L125 PetriNetUnfolderBase]: For 16580807/16580948 co-relation queries the response was YES. [2025-03-17 19:36:32,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277640 conditions, 48897 events. 13492/48897 cut-off events. For 16580807/16580948 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 615747 event pairs, 325 based on Foata normal form. 2302/51158 useless extension candidates. Maximal degree in co-relation 277457. Up to 10385 conditions per place. [2025-03-17 19:36:32,993 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 783 selfloop transitions, 5760 changer transitions 0/6555 dead transitions. [2025-03-17 19:36:32,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 6555 transitions, 112476 flow [2025-03-17 19:36:32,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2025-03-17 19:36:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2025-03-17 19:36:32,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 2737 transitions. [2025-03-17 19:36:33,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6291954022988506 [2025-03-17 19:36:33,016 INFO L175 Difference]: Start difference. First operand has 440 places, 1445 transitions, 22123 flow. Second operand 145 states and 2737 transitions. [2025-03-17 19:36:33,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 6555 transitions, 112476 flow [2025-03-17 19:36:57,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 6555 transitions, 88052 flow, removed 12087 selfloop flow, removed 23 redundant places. [2025-03-17 19:36:57,270 INFO L231 Difference]: Finished difference. Result has 651 places, 6167 transitions, 92411 flow [2025-03-17 19:36:57,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=17837, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=145, PETRI_FLOW=92411, PETRI_PLACES=651, PETRI_TRANSITIONS=6167} [2025-03-17 19:36:57,272 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 622 predicate places. [2025-03-17 19:36:57,272 INFO L471 AbstractCegarLoop]: Abstraction has has 651 places, 6167 transitions, 92411 flow [2025-03-17 19:36:57,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 14.914285714285715) internal successors, (522), 35 states have internal predecessors, (522), 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) [2025-03-17 19:36:57,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:36:57,273 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:36:57,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 19:36:57,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:36:57,474 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:36:57,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:36:57,475 INFO L85 PathProgramCache]: Analyzing trace with hash 91421641, now seen corresponding path program 2 times [2025-03-17 19:36:57,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:36:57,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879870119] [2025-03-17 19:36:57,475 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:36:57,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:36:57,490 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-03-17 19:36:57,514 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-03-17 19:36:57,515 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:36:57,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:36:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:36:58,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:36:58,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879870119] [2025-03-17 19:36:58,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879870119] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:36:58,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234107270] [2025-03-17 19:36:58,002 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:36:58,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:36:58,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:36:58,004 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:36:58,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 19:36:58,159 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-03-17 19:36:58,191 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-03-17 19:36:58,191 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:36:58,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:36:58,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-17 19:36:58,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:36:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:36:58,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:36:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:36:58,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234107270] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:36:58,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:36:58,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2025-03-17 19:36:58,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717815474] [2025-03-17 19:36:58,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:36:58,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-17 19:36:58,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:36:58,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-17 19:36:58,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=1144, Unknown=0, NotChecked=0, Total=1640 [2025-03-17 19:36:58,944 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-03-17 19:36:58,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 6167 transitions, 92411 flow. Second operand has 41 states, 41 states have (on average 14.78048780487805) internal successors, (606), 41 states have internal predecessors, (606), 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) [2025-03-17 19:36:58,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:36:58,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-03-17 19:36:58,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand