./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 c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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-?-c00e63d-m [2025-02-06 18:42:20,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:42:20,675 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:42:20,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:42:20,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:42:20,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:42:20,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:42:20,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:42:20,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:42:20,704 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:42:20,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:42:20,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:42:20,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:42:20,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:42:20,706 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:42:20,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:42:20,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:42:20,706 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:42:20,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:42:20,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:42:20,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:42:20,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:42:20,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:42:20,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:42:20,706 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:42:20,706 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:42:20,707 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:42:20,707 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:42:20,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:42:20,707 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-jdk21/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 [2025-02-06 18:42:20,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:42:20,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:42:20,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:42:20,955 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:42:20,960 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:42:20,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2025-02-06 18:42:22,106 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b062d245d/947b7bb6aecc49b399f4cff4bbb19103/FLAGd7617f88b [2025-02-06 18:42:22,425 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:42:22,425 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2025-02-06 18:42:22,440 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b062d245d/947b7bb6aecc49b399f4cff4bbb19103/FLAGd7617f88b [2025-02-06 18:42:22,678 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b062d245d/947b7bb6aecc49b399f4cff4bbb19103 [2025-02-06 18:42:22,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:42:22,681 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:42:22,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:42:22,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:42:22,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:42:22,685 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:42:22" (1/1) ... [2025-02-06 18:42:22,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316a2811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:22, skipping insertion in model container [2025-02-06 18:42:22,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:42:22" (1/1) ... [2025-02-06 18:42:22,711 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:42:23,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:42:23,075 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:42:23,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:42:23,158 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:42:23,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23 WrapperNode [2025-02-06 18:42:23,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:42:23,160 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:42:23,160 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:42:23,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:42:23,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23" (1/1) ... [2025-02-06 18:42:23,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23" (1/1) ... [2025-02-06 18:42:23,197 INFO L138 Inliner]: procedures = 364, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 117 [2025-02-06 18:42:23,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:42:23,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:42:23,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:42:23,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:42:23,203 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23" (1/1) ... [2025-02-06 18:42:23,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23" (1/1) ... [2025-02-06 18:42:23,205 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23" (1/1) ... [2025-02-06 18:42:23,216 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]. [2025-02-06 18:42:23,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23" (1/1) ... [2025-02-06 18:42:23,216 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23" (1/1) ... [2025-02-06 18:42:23,220 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23" (1/1) ... [2025-02-06 18:42:23,226 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23" (1/1) ... [2025-02-06 18:42:23,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23" (1/1) ... [2025-02-06 18:42:23,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23" (1/1) ... [2025-02-06 18:42:23,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:42:23,232 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:42:23,232 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:42:23,232 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:42:23,233 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23" (1/1) ... [2025-02-06 18:42:23,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:42:23,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:42:23,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:42:23,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:42:23,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:42:23,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:42:23,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2025-02-06 18:42:23,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2025-02-06 18:42:23,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:42:23,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:42:23,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:42:23,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:42:23,302 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:42:23,404 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:42:23,405 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:42:23,524 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:42:23,524 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:42:23,706 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:42:23,706 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:42:23,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:42:23 BoogieIcfgContainer [2025-02-06 18:42:23,706 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:42:23,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:42:23,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:42:23,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:42:23,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:42:22" (1/3) ... [2025-02-06 18:42:23,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f84a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:42:23, skipping insertion in model container [2025-02-06 18:42:23,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:23" (2/3) ... [2025-02-06 18:42:23,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f84a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:42:23, skipping insertion in model container [2025-02-06 18:42:23,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:42:23" (3/3) ... [2025-02-06 18:42:23,712 INFO L128 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-3.i [2025-02-06 18:42:23,723 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:42:23,724 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. [2025-02-06 18:42:23,724 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:42:23,759 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-06 18:42:23,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 67 flow [2025-02-06 18:42:23,808 INFO L124 PetriNetUnfolderBase]: 2/29 cut-off events. [2025-02-06 18:42:23,811 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:42:23,813 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. [2025-02-06 18:42:23,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 30 transitions, 67 flow [2025-02-06 18:42:23,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 27 transitions, 57 flow [2025-02-06 18:42:23,824 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:42:23,837 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;@7f286520, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:42:23,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-02-06 18:42:23,843 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:42:23,845 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2025-02-06 18:42:23,846 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:42:23,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:23,846 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:42:23,846 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)] === [2025-02-06 18:42:23,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:23,851 INFO L85 PathProgramCache]: Analyzing trace with hash 319696671, now seen corresponding path program 1 times [2025-02-06 18:42:23,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:23,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224816853] [2025-02-06 18:42:23,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:23,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:23,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:42:23,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:42:23,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:23,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:24,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:24,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224816853] [2025-02-06 18:42:24,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224816853] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:24,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:24,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:42:24,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593873681] [2025-02-06 18:42:24,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:24,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:42:24,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:24,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:42:24,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:42:24,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 30 [2025-02-06 18:42:24,070 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) [2025-02-06 18:42:24,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:24,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 30 [2025-02-06 18:42:24,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:24,131 INFO L124 PetriNetUnfolderBase]: 40/136 cut-off events. [2025-02-06 18:42:24,132 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:42:24,132 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. [2025-02-06 18:42:24,135 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 17 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2025-02-06 18:42:24,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 111 flow [2025-02-06 18:42:24,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:42:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:42:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2025-02-06 18:42:24,147 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2025-02-06 18:42:24,149 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 57 flow. Second operand 3 states and 67 transitions. [2025-02-06 18:42:24,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 111 flow [2025-02-06 18:42:24,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:42:24,156 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 77 flow [2025-02-06 18:42:24,158 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} [2025-02-06 18:42:24,160 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2025-02-06 18:42:24,162 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 77 flow [2025-02-06 18:42:24,162 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) [2025-02-06 18:42:24,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:24,163 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:42:24,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:42:24,163 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)] === [2025-02-06 18:42:24,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:24,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1321016772, now seen corresponding path program 1 times [2025-02-06 18:42:24,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:24,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880180629] [2025-02-06 18:42:24,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:24,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:24,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:42:24,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:42:24,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:24,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:24,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:24,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880180629] [2025-02-06 18:42:24,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880180629] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:24,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:24,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:42:24,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421010160] [2025-02-06 18:42:24,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:24,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:42:24,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:24,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:42:24,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:42:24,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 18:42:24,295 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) [2025-02-06 18:42:24,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:24,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 18:42:24,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:24,395 INFO L124 PetriNetUnfolderBase]: 54/162 cut-off events. [2025-02-06 18:42:24,396 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-02-06 18:42:24,397 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. [2025-02-06 18:42:24,398 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 22 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2025-02-06 18:42:24,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 168 flow [2025-02-06 18:42:24,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:42:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:42:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2025-02-06 18:42:24,399 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6533333333333333 [2025-02-06 18:42:24,400 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 77 flow. Second operand 5 states and 98 transitions. [2025-02-06 18:42:24,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 168 flow [2025-02-06 18:42:24,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:42:24,401 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 120 flow [2025-02-06 18:42:24,401 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} [2025-02-06 18:42:24,402 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2025-02-06 18:42:24,402 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 120 flow [2025-02-06 18:42:24,402 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) [2025-02-06 18:42:24,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:24,402 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:24,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:42:24,402 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)] === [2025-02-06 18:42:24,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:24,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2009133192, now seen corresponding path program 1 times [2025-02-06 18:42:24,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:24,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984632372] [2025-02-06 18:42:24,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:24,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:24,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:42:24,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:42:24,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:24,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:24,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984632372] [2025-02-06 18:42:24,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984632372] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:24,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:24,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:42:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743069481] [2025-02-06 18:42:24,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:24,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:42:24,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:24,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:42:24,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:42:24,491 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-06 18:42:24,491 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) [2025-02-06 18:42:24,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:24,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-06 18:42:24,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:24,598 INFO L124 PetriNetUnfolderBase]: 101/255 cut-off events. [2025-02-06 18:42:24,598 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2025-02-06 18:42:24,599 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. [2025-02-06 18:42:24,601 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 42 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2025-02-06 18:42:24,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 291 flow [2025-02-06 18:42:24,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:42:24,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:42:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2025-02-06 18:42:24,604 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2025-02-06 18:42:24,604 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 120 flow. Second operand 4 states and 81 transitions. [2025-02-06 18:42:24,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 291 flow [2025-02-06 18:42:24,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:42:24,606 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 140 flow [2025-02-06 18:42:24,606 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} [2025-02-06 18:42:24,607 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2025-02-06 18:42:24,607 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 140 flow [2025-02-06 18:42:24,607 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) [2025-02-06 18:42:24,607 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:24,607 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:24,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:42:24,607 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)] === [2025-02-06 18:42:24,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:24,607 INFO L85 PathProgramCache]: Analyzing trace with hash -745256734, now seen corresponding path program 1 times [2025-02-06 18:42:24,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:24,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689776131] [2025-02-06 18:42:24,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:24,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:24,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:42:24,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:42:24,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:24,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:24,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:24,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689776131] [2025-02-06 18:42:24,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689776131] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:24,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:24,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:42:24,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421574101] [2025-02-06 18:42:24,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:24,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:42:24,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:24,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:42:24,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:42:24,724 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 18:42:24,725 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) [2025-02-06 18:42:24,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:24,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 18:42:24,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:24,898 INFO L124 PetriNetUnfolderBase]: 120/380 cut-off events. [2025-02-06 18:42:24,898 INFO L125 PetriNetUnfolderBase]: For 225/246 co-relation queries the response was YES. [2025-02-06 18:42:24,902 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. [2025-02-06 18:42:24,903 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 42 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2025-02-06 18:42:24,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 363 flow [2025-02-06 18:42:24,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:42:24,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:42:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2025-02-06 18:42:24,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7055555555555556 [2025-02-06 18:42:24,905 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 140 flow. Second operand 6 states and 127 transitions. [2025-02-06 18:42:24,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 363 flow [2025-02-06 18:42:24,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:42:24,907 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 218 flow [2025-02-06 18:42:24,907 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} [2025-02-06 18:42:24,908 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2025-02-06 18:42:24,908 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 218 flow [2025-02-06 18:42:24,908 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) [2025-02-06 18:42:24,908 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:24,908 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:24,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:42:24,908 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)] === [2025-02-06 18:42:24,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:24,908 INFO L85 PathProgramCache]: Analyzing trace with hash 992505416, now seen corresponding path program 1 times [2025-02-06 18:42:24,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:24,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392972656] [2025-02-06 18:42:24,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:24,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:24,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:42:24,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:42:24,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:24,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:24,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:24,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392972656] [2025-02-06 18:42:24,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392972656] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:24,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:24,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:42:24,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974557885] [2025-02-06 18:42:24,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:24,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:42:24,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:24,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:42:24,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:42:25,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 18:42:25,003 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) [2025-02-06 18:42:25,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:25,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 18:42:25,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:25,171 INFO L124 PetriNetUnfolderBase]: 134/462 cut-off events. [2025-02-06 18:42:25,171 INFO L125 PetriNetUnfolderBase]: For 756/771 co-relation queries the response was YES. [2025-02-06 18:42:25,173 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. [2025-02-06 18:42:25,176 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 37 selfloop transitions, 20 changer transitions 0/70 dead transitions. [2025-02-06 18:42:25,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 477 flow [2025-02-06 18:42:25,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:42:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:42:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2025-02-06 18:42:25,178 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6619047619047619 [2025-02-06 18:42:25,178 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 218 flow. Second operand 7 states and 139 transitions. [2025-02-06 18:42:25,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 477 flow [2025-02-06 18:42:25,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 465 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-06 18:42:25,187 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 370 flow [2025-02-06 18:42:25,187 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} [2025-02-06 18:42:25,188 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2025-02-06 18:42:25,188 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 370 flow [2025-02-06 18:42:25,188 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) [2025-02-06 18:42:25,190 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:25,190 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:25,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:42:25,190 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)] === [2025-02-06 18:42:25,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:25,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1279040070, now seen corresponding path program 1 times [2025-02-06 18:42:25,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:25,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129834834] [2025-02-06 18:42:25,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:25,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:25,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:42:25,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:42:25,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:25,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:25,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:25,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129834834] [2025-02-06 18:42:25,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129834834] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:25,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:25,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:42:25,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222980926] [2025-02-06 18:42:25,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:25,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:42:25,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:25,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:42:25,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:42:25,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2025-02-06 18:42:25,256 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) [2025-02-06 18:42:25,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:25,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2025-02-06 18:42:25,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:25,343 INFO L124 PetriNetUnfolderBase]: 186/568 cut-off events. [2025-02-06 18:42:25,343 INFO L125 PetriNetUnfolderBase]: For 1597/1673 co-relation queries the response was YES. [2025-02-06 18:42:25,345 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. [2025-02-06 18:42:25,347 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 58 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2025-02-06 18:42:25,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 667 flow [2025-02-06 18:42:25,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:42:25,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:42:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-02-06 18:42:25,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2025-02-06 18:42:25,348 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 370 flow. Second operand 4 states and 82 transitions. [2025-02-06 18:42:25,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 667 flow [2025-02-06 18:42:25,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 642 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-02-06 18:42:25,353 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 374 flow [2025-02-06 18:42:25,353 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} [2025-02-06 18:42:25,354 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2025-02-06 18:42:25,354 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 374 flow [2025-02-06 18:42:25,354 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) [2025-02-06 18:42:25,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:25,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:25,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:42:25,354 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)] === [2025-02-06 18:42:25,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:25,355 INFO L85 PathProgramCache]: Analyzing trace with hash 148417410, now seen corresponding path program 1 times [2025-02-06 18:42:25,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:25,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766273494] [2025-02-06 18:42:25,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:25,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:25,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:42:25,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:42:25,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:25,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:25,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:25,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766273494] [2025-02-06 18:42:25,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766273494] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:25,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:25,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:42:25,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114588164] [2025-02-06 18:42:25,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:25,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:42:25,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:25,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:42:25,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:42:25,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 18:42:25,437 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) [2025-02-06 18:42:25,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:25,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 18:42:25,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:25,572 INFO L124 PetriNetUnfolderBase]: 124/443 cut-off events. [2025-02-06 18:42:25,572 INFO L125 PetriNetUnfolderBase]: For 1201/1218 co-relation queries the response was YES. [2025-02-06 18:42:25,575 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. [2025-02-06 18:42:25,577 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 40 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2025-02-06 18:42:25,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 516 flow [2025-02-06 18:42:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:42:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:42:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2025-02-06 18:42:25,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5708333333333333 [2025-02-06 18:42:25,579 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 374 flow. Second operand 8 states and 137 transitions. [2025-02-06 18:42:25,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 516 flow [2025-02-06 18:42:25,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 491 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-02-06 18:42:25,584 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 334 flow [2025-02-06 18:42:25,585 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} [2025-02-06 18:42:25,585 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2025-02-06 18:42:25,586 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 334 flow [2025-02-06 18:42:25,586 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) [2025-02-06 18:42:25,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:25,586 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:25,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:42:25,586 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)] === [2025-02-06 18:42:25,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:25,587 INFO L85 PathProgramCache]: Analyzing trace with hash -249789703, now seen corresponding path program 1 times [2025-02-06 18:42:25,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:25,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241376338] [2025-02-06 18:42:25,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:25,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:25,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:42:25,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:42:25,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:25,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:25,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:25,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241376338] [2025-02-06 18:42:25,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241376338] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:25,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:25,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:42:25,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063483947] [2025-02-06 18:42:25,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:25,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:42:25,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:25,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:42:25,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:42:25,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 18:42:25,660 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) [2025-02-06 18:42:25,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:25,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 18:42:25,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:25,817 INFO L124 PetriNetUnfolderBase]: 158/540 cut-off events. [2025-02-06 18:42:25,817 INFO L125 PetriNetUnfolderBase]: For 1265/1308 co-relation queries the response was YES. [2025-02-06 18:42:25,818 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. [2025-02-06 18:42:25,820 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 47 selfloop transitions, 25 changer transitions 0/86 dead transitions. [2025-02-06 18:42:25,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 687 flow [2025-02-06 18:42:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:42:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:42:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2025-02-06 18:42:25,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.62 [2025-02-06 18:42:25,822 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 334 flow. Second operand 10 states and 186 transitions. [2025-02-06 18:42:25,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 687 flow [2025-02-06 18:42:25,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 674 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:42:25,825 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 499 flow [2025-02-06 18:42:25,826 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} [2025-02-06 18:42:25,826 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2025-02-06 18:42:25,826 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 499 flow [2025-02-06 18:42:25,826 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) [2025-02-06 18:42:25,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:25,826 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:25,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:42:25,827 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)] === [2025-02-06 18:42:25,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:25,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1000128402, now seen corresponding path program 1 times [2025-02-06 18:42:25,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:25,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140190859] [2025-02-06 18:42:25,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:25,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:25,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:42:25,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:42:25,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:25,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:25,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:25,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140190859] [2025-02-06 18:42:25,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140190859] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:42:25,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358901330] [2025-02-06 18:42:25,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:25,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:42:25,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:42:25,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:42:25,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:42:25,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:42:25,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:42:25,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:25,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:25,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:42:26,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:42:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:26,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:42:26,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358901330] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:26,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:42:26,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-02-06 18:42:26,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921473304] [2025-02-06 18:42:26,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:26,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:42:26,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:26,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:42:26,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:42:26,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2025-02-06 18:42:26,068 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) [2025-02-06 18:42:26,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:26,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2025-02-06 18:42:26,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:26,193 INFO L124 PetriNetUnfolderBase]: 318/807 cut-off events. [2025-02-06 18:42:26,193 INFO L125 PetriNetUnfolderBase]: For 3275/3310 co-relation queries the response was YES. [2025-02-06 18:42:26,194 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. [2025-02-06 18:42:26,197 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 76 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2025-02-06 18:42:26,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 945 flow [2025-02-06 18:42:26,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:42:26,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:42:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-02-06 18:42:26,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.575 [2025-02-06 18:42:26,198 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 499 flow. Second operand 4 states and 69 transitions. [2025-02-06 18:42:26,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 945 flow [2025-02-06 18:42:26,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 92 transitions, 869 flow, removed 24 selfloop flow, removed 5 redundant places. [2025-02-06 18:42:26,203 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 463 flow [2025-02-06 18:42:26,203 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} [2025-02-06 18:42:26,204 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2025-02-06 18:42:26,204 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 463 flow [2025-02-06 18:42:26,204 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) [2025-02-06 18:42:26,204 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:26,204 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:42:26,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:42:26,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:42:26,404 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)] === [2025-02-06 18:42:26,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:26,405 INFO L85 PathProgramCache]: Analyzing trace with hash 939209652, now seen corresponding path program 1 times [2025-02-06 18:42:26,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:26,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291908801] [2025-02-06 18:42:26,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:26,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:26,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:42:26,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:42:26,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:26,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:42:26,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:26,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291908801] [2025-02-06 18:42:26,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291908801] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:26,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:26,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:42:26,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957609195] [2025-02-06 18:42:26,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:26,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:42:26,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:26,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:42:26,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:42:26,469 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2025-02-06 18:42:26,469 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) [2025-02-06 18:42:26,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:26,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2025-02-06 18:42:26,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:26,560 INFO L124 PetriNetUnfolderBase]: 286/761 cut-off events. [2025-02-06 18:42:26,561 INFO L125 PetriNetUnfolderBase]: For 2623/2653 co-relation queries the response was YES. [2025-02-06 18:42:26,563 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. [2025-02-06 18:42:26,566 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 86 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2025-02-06 18:42:26,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 103 transitions, 1011 flow [2025-02-06 18:42:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:42:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:42:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-02-06 18:42:26,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.575 [2025-02-06 18:42:26,567 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 463 flow. Second operand 4 states and 69 transitions. [2025-02-06 18:42:26,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 103 transitions, 1011 flow [2025-02-06 18:42:26,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 1001 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:42:26,576 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 469 flow [2025-02-06 18:42:26,576 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} [2025-02-06 18:42:26,576 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2025-02-06 18:42:26,577 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 469 flow [2025-02-06 18:42:26,577 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) [2025-02-06 18:42:26,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:26,577 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:26,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:42:26,577 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)] === [2025-02-06 18:42:26,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:26,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1170834366, now seen corresponding path program 1 times [2025-02-06 18:42:26,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:26,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893219481] [2025-02-06 18:42:26,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:26,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:26,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:42:26,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:42:26,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:26,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:26,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:26,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893219481] [2025-02-06 18:42:26,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893219481] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:42:26,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582515070] [2025-02-06 18:42:26,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:26,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:42:26,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:42:26,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:42:26,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:42:26,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:42:26,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:42:26,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:26,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:26,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:42:26,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:42:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:26,761 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:42:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:26,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582515070] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:42:26,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:42:26,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:42:26,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839481963] [2025-02-06 18:42:26,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:42:26,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 18:42:26,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:26,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 18:42:26,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-02-06 18:42:26,808 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 18:42:26,808 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) [2025-02-06 18:42:26,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:26,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 18:42:26,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:27,045 INFO L124 PetriNetUnfolderBase]: 261/880 cut-off events. [2025-02-06 18:42:27,046 INFO L125 PetriNetUnfolderBase]: For 4416/4444 co-relation queries the response was YES. [2025-02-06 18:42:27,048 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. [2025-02-06 18:42:27,051 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 64 selfloop transitions, 71 changer transitions 0/148 dead transitions. [2025-02-06 18:42:27,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 148 transitions, 1497 flow [2025-02-06 18:42:27,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 18:42:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-06 18:42:27,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 403 transitions. [2025-02-06 18:42:27,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6106060606060606 [2025-02-06 18:42:27,053 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 469 flow. Second operand 22 states and 403 transitions. [2025-02-06 18:42:27,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 148 transitions, 1497 flow [2025-02-06 18:42:27,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 1464 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:42:27,059 INFO L231 Difference]: Finished difference. Result has 100 places, 109 transitions, 1265 flow [2025-02-06 18:42:27,060 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} [2025-02-06 18:42:27,060 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 71 predicate places. [2025-02-06 18:42:27,060 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 109 transitions, 1265 flow [2025-02-06 18:42:27,060 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) [2025-02-06 18:42:27,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:27,060 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:27,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 18:42:27,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:42:27,261 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)] === [2025-02-06 18:42:27,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:27,262 INFO L85 PathProgramCache]: Analyzing trace with hash -440637797, now seen corresponding path program 1 times [2025-02-06 18:42:27,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:27,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007853837] [2025-02-06 18:42:27,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:27,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:27,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:42:27,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:42:27,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:27,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:27,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:27,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007853837] [2025-02-06 18:42:27,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007853837] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:42:27,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797144042] [2025-02-06 18:42:27,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:27,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:42:27,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:42:27,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:42:27,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:42:27,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:42:27,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:42:27,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:27,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:27,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:42:27,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:42:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:27,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:42:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:27,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797144042] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:42:27,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:42:27,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-02-06 18:42:27,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320042100] [2025-02-06 18:42:27,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:42:27,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 18:42:27,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:27,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 18:42:27,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2025-02-06 18:42:27,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 18:42:27,529 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) [2025-02-06 18:42:27,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:27,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 18:42:27,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:28,033 INFO L124 PetriNetUnfolderBase]: 565/1987 cut-off events. [2025-02-06 18:42:28,033 INFO L125 PetriNetUnfolderBase]: For 21221/21319 co-relation queries the response was YES. [2025-02-06 18:42:28,040 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. [2025-02-06 18:42:28,048 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 140 selfloop transitions, 165 changer transitions 0/318 dead transitions. [2025-02-06 18:42:28,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 318 transitions, 4019 flow [2025-02-06 18:42:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-06 18:42:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-02-06 18:42:28,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 630 transitions. [2025-02-06 18:42:28,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2025-02-06 18:42:28,054 INFO L175 Difference]: Start difference. First operand has 100 places, 109 transitions, 1265 flow. Second operand 33 states and 630 transitions. [2025-02-06 18:42:28,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 318 transitions, 4019 flow [2025-02-06 18:42:28,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 318 transitions, 3454 flow, removed 270 selfloop flow, removed 5 redundant places. [2025-02-06 18:42:28,112 INFO L231 Difference]: Finished difference. Result has 143 places, 219 transitions, 2847 flow [2025-02-06 18:42:28,115 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} [2025-02-06 18:42:28,115 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2025-02-06 18:42:28,115 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 219 transitions, 2847 flow [2025-02-06 18:42:28,115 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) [2025-02-06 18:42:28,116 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:28,116 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:28,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 18:42:28,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:42:28,317 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)] === [2025-02-06 18:42:28,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:28,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1103909379, now seen corresponding path program 1 times [2025-02-06 18:42:28,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:28,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791981054] [2025-02-06 18:42:28,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:28,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:28,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:42:28,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:42:28,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:28,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:28,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:28,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791981054] [2025-02-06 18:42:28,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791981054] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:42:28,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133630482] [2025-02-06 18:42:28,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:28,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:42:28,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:42:28,392 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:42:28,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:42:28,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:42:28,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:42:28,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:28,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:28,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:42:28,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:42:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:28,506 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:42:28,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133630482] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:28,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:42:28,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:42:28,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257155767] [2025-02-06 18:42:28,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:28,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:42:28,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:28,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:42:28,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:42:28,516 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2025-02-06 18:42:28,516 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) [2025-02-06 18:42:28,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:28,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2025-02-06 18:42:28,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:28,775 INFO L124 PetriNetUnfolderBase]: 686/2133 cut-off events. [2025-02-06 18:42:28,775 INFO L125 PetriNetUnfolderBase]: For 32176/32230 co-relation queries the response was YES. [2025-02-06 18:42:28,785 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. [2025-02-06 18:42:28,793 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 274 selfloop transitions, 5 changer transitions 0/291 dead transitions. [2025-02-06 18:42:28,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 291 transitions, 4635 flow [2025-02-06 18:42:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:42:28,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:42:28,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-02-06 18:42:28,794 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-02-06 18:42:28,794 INFO L175 Difference]: Start difference. First operand has 143 places, 219 transitions, 2847 flow. Second operand 6 states and 108 transitions. [2025-02-06 18:42:28,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 291 transitions, 4635 flow [2025-02-06 18:42:28,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 291 transitions, 3774 flow, removed 372 selfloop flow, removed 12 redundant places. [2025-02-06 18:42:28,907 INFO L231 Difference]: Finished difference. Result has 135 places, 218 transitions, 2257 flow [2025-02-06 18:42:28,908 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} [2025-02-06 18:42:28,909 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2025-02-06 18:42:28,910 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 218 transitions, 2257 flow [2025-02-06 18:42:28,910 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) [2025-02-06 18:42:28,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:28,910 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:42:28,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 18:42:29,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-06 18:42:29,114 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)] === [2025-02-06 18:42:29,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:29,117 INFO L85 PathProgramCache]: Analyzing trace with hash 138547921, now seen corresponding path program 1 times [2025-02-06 18:42:29,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:29,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826090134] [2025-02-06 18:42:29,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:29,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:29,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:42:29,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:42:29,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:29,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:29,164 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:42:29,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:29,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826090134] [2025-02-06 18:42:29,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826090134] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:29,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:29,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:42:29,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780782467] [2025-02-06 18:42:29,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:29,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:42:29,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:29,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:42:29,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:42:29,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-06 18:42:29,169 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) [2025-02-06 18:42:29,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:29,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-06 18:42:29,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:29,430 INFO L124 PetriNetUnfolderBase]: 735/2201 cut-off events. [2025-02-06 18:42:29,430 INFO L125 PetriNetUnfolderBase]: For 28385/28446 co-relation queries the response was YES. [2025-02-06 18:42:29,439 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. [2025-02-06 18:42:29,452 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 259 selfloop transitions, 6 changer transitions 0/276 dead transitions. [2025-02-06 18:42:29,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 276 transitions, 3497 flow [2025-02-06 18:42:29,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:42:29,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:42:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2025-02-06 18:42:29,453 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2025-02-06 18:42:29,453 INFO L175 Difference]: Start difference. First operand has 135 places, 218 transitions, 2257 flow. Second operand 4 states and 68 transitions. [2025-02-06 18:42:29,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 276 transitions, 3497 flow [2025-02-06 18:42:29,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 276 transitions, 3488 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-06 18:42:29,497 INFO L231 Difference]: Finished difference. Result has 134 places, 218 transitions, 2264 flow [2025-02-06 18:42:29,498 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} [2025-02-06 18:42:29,499 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2025-02-06 18:42:29,499 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 218 transitions, 2264 flow [2025-02-06 18:42:29,499 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) [2025-02-06 18:42:29,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:29,499 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:29,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 18:42:29,500 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)] === [2025-02-06 18:42:29,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:29,500 INFO L85 PathProgramCache]: Analyzing trace with hash -774308433, now seen corresponding path program 1 times [2025-02-06 18:42:29,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:29,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700120744] [2025-02-06 18:42:29,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:29,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:29,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 18:42:29,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:42:29,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:29,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:29,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:29,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700120744] [2025-02-06 18:42:29,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700120744] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:42:29,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973996022] [2025-02-06 18:42:29,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:29,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:42:29,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:42:29,664 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:42:29,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:42:29,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 18:42:29,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:42:29,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:29,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:29,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 18:42:29,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:42:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:29,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:42:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:29,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973996022] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:42:29,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:42:29,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-06 18:42:29,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870950908] [2025-02-06 18:42:29,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:42:29,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:42:29,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:29,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:42:29,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:42:29,902 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 18:42:29,903 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) [2025-02-06 18:42:29,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:29,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 18:42:29,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:31,065 INFO L124 PetriNetUnfolderBase]: 1312/4645 cut-off events. [2025-02-06 18:42:31,065 INFO L125 PetriNetUnfolderBase]: For 126881/126957 co-relation queries the response was YES. [2025-02-06 18:42:31,085 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. [2025-02-06 18:42:31,098 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 237 selfloop transitions, 415 changer transitions 0/664 dead transitions. [2025-02-06 18:42:31,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 664 transitions, 8388 flow [2025-02-06 18:42:31,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-02-06 18:42:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-02-06 18:42:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1173 transitions. [2025-02-06 18:42:31,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6409836065573771 [2025-02-06 18:42:31,101 INFO L175 Difference]: Start difference. First operand has 134 places, 218 transitions, 2264 flow. Second operand 61 states and 1173 transitions. [2025-02-06 18:42:31,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 664 transitions, 8388 flow [2025-02-06 18:42:31,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 664 transitions, 8273 flow, removed 26 selfloop flow, removed 2 redundant places. [2025-02-06 18:42:31,191 INFO L231 Difference]: Finished difference. Result has 228 places, 478 transitions, 7142 flow [2025-02-06 18:42:31,192 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} [2025-02-06 18:42:31,192 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 199 predicate places. [2025-02-06 18:42:31,192 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 478 transitions, 7142 flow [2025-02-06 18:42:31,192 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) [2025-02-06 18:42:31,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:31,192 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:42:31,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 18:42:31,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 18:42:31,397 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)] === [2025-02-06 18:42:31,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:31,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1800770199, now seen corresponding path program 1 times [2025-02-06 18:42:31,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:31,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005557560] [2025-02-06 18:42:31,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:31,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:31,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 18:42:31,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 18:42:31,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:31,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:31,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:31,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005557560] [2025-02-06 18:42:31,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005557560] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:42:31,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892240411] [2025-02-06 18:42:31,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:31,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:42:31,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:42:31,554 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:42:31,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 18:42:31,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 18:42:31,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 18:42:31,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:31,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:31,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 18:42:31,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:42:31,726 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:31,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:42:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:32,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892240411] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:42:32,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:42:32,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2025-02-06 18:42:32,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648808220] [2025-02-06 18:42:32,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:42:32,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-06 18:42:32,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:32,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-06 18:42:32,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2025-02-06 18:42:32,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 18:42:32,057 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) [2025-02-06 18:42:32,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:32,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 18:42:32,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:37,251 INFO L124 PetriNetUnfolderBase]: 4348/16213 cut-off events. [2025-02-06 18:42:37,252 INFO L125 PetriNetUnfolderBase]: For 1578401/1578540 co-relation queries the response was YES. [2025-02-06 18:42:37,460 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. [2025-02-06 18:42:37,523 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 609 selfloop transitions, 1334 changer transitions 0/1955 dead transitions. [2025-02-06 18:42:37,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 1955 transitions, 31652 flow [2025-02-06 18:42:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2025-02-06 18:42:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2025-02-06 18:42:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 2733 transitions. [2025-02-06 18:42:37,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6649635036496351 [2025-02-06 18:42:37,528 INFO L175 Difference]: Start difference. First operand has 228 places, 478 transitions, 7142 flow. Second operand 137 states and 2733 transitions. [2025-02-06 18:42:37,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 1955 transitions, 31652 flow [2025-02-06 18:42:39,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 1955 transitions, 25963 flow, removed 2815 selfloop flow, removed 9 redundant places. [2025-02-06 18:42:39,158 INFO L231 Difference]: Finished difference. Result has 440 places, 1445 transitions, 22123 flow [2025-02-06 18:42:39,158 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} [2025-02-06 18:42:39,159 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 411 predicate places. [2025-02-06 18:42:39,159 INFO L471 AbstractCegarLoop]: Abstraction has has 440 places, 1445 transitions, 22123 flow [2025-02-06 18:42:39,159 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) [2025-02-06 18:42:39,159 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:39,159 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:39,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 18:42:39,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-06 18:42:39,360 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)] === [2025-02-06 18:42:39,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:39,361 INFO L85 PathProgramCache]: Analyzing trace with hash 2050084101, now seen corresponding path program 2 times [2025-02-06 18:42:39,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:39,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998079952] [2025-02-06 18:42:39,361 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:42:39,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:39,374 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 68 statements into 2 equivalence classes. [2025-02-06 18:42:39,382 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-02-06 18:42:39,382 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:42:39,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:39,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:39,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998079952] [2025-02-06 18:42:39,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998079952] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:42:39,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298553967] [2025-02-06 18:42:39,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:42:39,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:42:39,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:42:39,658 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:42:39,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 18:42:39,740 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 68 statements into 2 equivalence classes. [2025-02-06 18:42:39,765 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-02-06 18:42:39,766 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:42:39,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:39,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 18:42:39,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:42:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:39,861 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:42:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:40,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298553967] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:42:40,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:42:40,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2025-02-06 18:42:40,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193539889] [2025-02-06 18:42:40,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:42:40,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-06 18:42:40,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:40,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-06 18:42:40,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=757, Unknown=0, NotChecked=0, Total=1190 [2025-02-06 18:42:40,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 18:42:40,172 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) [2025-02-06 18:42:40,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:40,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 18:42:40,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:00,135 INFO L124 PetriNetUnfolderBase]: 13492/48897 cut-off events. [2025-02-06 18:43:00,136 INFO L125 PetriNetUnfolderBase]: For 16580807/16580948 co-relation queries the response was YES. [2025-02-06 18:43:02,481 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. [2025-02-06 18:43:02,863 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 783 selfloop transitions, 5760 changer transitions 0/6555 dead transitions. [2025-02-06 18:43:02,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 6555 transitions, 112476 flow [2025-02-06 18:43:02,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2025-02-06 18:43:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2025-02-06 18:43:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 2737 transitions. [2025-02-06 18:43:02,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6291954022988506 [2025-02-06 18:43:02,869 INFO L175 Difference]: Start difference. First operand has 440 places, 1445 transitions, 22123 flow. Second operand 145 states and 2737 transitions. [2025-02-06 18:43:02,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 6555 transitions, 112476 flow [2025-02-06 18:43:26,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 6555 transitions, 88052 flow, removed 12087 selfloop flow, removed 23 redundant places. [2025-02-06 18:43:26,425 INFO L231 Difference]: Finished difference. Result has 651 places, 6167 transitions, 92411 flow [2025-02-06 18:43:26,426 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} [2025-02-06 18:43:26,427 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 622 predicate places. [2025-02-06 18:43:26,427 INFO L471 AbstractCegarLoop]: Abstraction has has 651 places, 6167 transitions, 92411 flow [2025-02-06 18:43:26,427 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) [2025-02-06 18:43:26,427 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:26,427 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:43:26,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 18:43:26,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:26,628 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)] === [2025-02-06 18:43:26,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash -656256951, now seen corresponding path program 2 times [2025-02-06 18:43:26,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:26,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815961014] [2025-02-06 18:43:26,629 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:26,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:26,641 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-02-06 18:43:26,650 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-02-06 18:43:26,650 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:43:26,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:26,890 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:26,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:26,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815961014] [2025-02-06 18:43:26,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815961014] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:26,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109507805] [2025-02-06 18:43:26,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:26,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:26,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:26,892 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:43:26,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 18:43:26,977 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-02-06 18:43:27,003 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-02-06 18:43:27,003 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:43:27,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:27,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 18:43:27,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:27,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:27,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109507805] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:27,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:27,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2025-02-06 18:43:27,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920021017] [2025-02-06 18:43:27,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:27,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-06 18:43:27,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:27,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-06 18:43:27,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=1144, Unknown=0, NotChecked=0, Total=1640 [2025-02-06 18:43:27,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-02-06 18:43:27,463 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) [2025-02-06 18:43:27,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:27,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-02-06 18:43:27,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand