./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --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/weaver/popl20-figure1-alt.wvr.c -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 e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:52:09,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:52:09,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:52:09,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:52:09,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:52:09,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:52:09,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:52:09,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:52:09,140 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:52:09,140 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:52:09,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:52:09,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:52:09,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:52:09,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:52:09,141 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:52:09,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:52:09,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:52:09,141 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:52:09,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:52:09,141 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:52:09,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:52:09,142 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:52:09,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:52:09,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:52:09,142 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:52:09,142 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:52:09,142 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:52:09,142 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:52:09,142 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:52:09,142 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:52:09,142 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:52:09,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:52:09,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:52:09,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:52:09,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:52:09,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:52:09,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:52:09,143 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:52:09,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:52:09,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:52:09,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:52:09,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:52:09,145 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:52:09,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:52:09,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:52:09,145 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 -> e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c [2025-02-06 18:52:09,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:52:09,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:52:09,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:52:09,468 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:52:09,469 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:52:09,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2025-02-06 18:52:10,720 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ade20b6c3/2ff15821cb70405185711125d0d8b042/FLAG12ea8749c [2025-02-06 18:52:10,978 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:52:10,979 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2025-02-06 18:52:10,984 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ade20b6c3/2ff15821cb70405185711125d0d8b042/FLAG12ea8749c [2025-02-06 18:52:10,994 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ade20b6c3/2ff15821cb70405185711125d0d8b042 [2025-02-06 18:52:10,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:52:10,997 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:52:10,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:52:10,998 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:52:11,001 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:52:11,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:52:10" (1/1) ... [2025-02-06 18:52:11,003 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d119d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11, skipping insertion in model container [2025-02-06 18:52:11,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:52:10" (1/1) ... [2025-02-06 18:52:11,014 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:52:11,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:52:11,148 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:52:11,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:52:11,179 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:52:11,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11 WrapperNode [2025-02-06 18:52:11,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:52:11,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:52:11,182 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:52:11,182 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:52:11,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11" (1/1) ... [2025-02-06 18:52:11,195 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11" (1/1) ... [2025-02-06 18:52:11,212 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 71 [2025-02-06 18:52:11,213 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:52:11,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:52:11,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:52:11,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:52:11,220 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11" (1/1) ... [2025-02-06 18:52:11,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11" (1/1) ... [2025-02-06 18:52:11,222 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11" (1/1) ... [2025-02-06 18:52:11,239 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 18:52:11,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11" (1/1) ... [2025-02-06 18:52:11,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11" (1/1) ... [2025-02-06 18:52:11,242 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11" (1/1) ... [2025-02-06 18:52:11,246 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11" (1/1) ... [2025-02-06 18:52:11,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11" (1/1) ... [2025-02-06 18:52:11,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11" (1/1) ... [2025-02-06 18:52:11,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:52:11,253 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:52:11,253 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:52:11,253 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:52:11,254 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11" (1/1) ... [2025-02-06 18:52:11,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:52:11,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:11,288 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 18:52:11,291 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 18:52:11,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:52:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:52:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:52:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:52:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:52:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:52:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:52:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:52:11,318 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 18:52:11,393 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:52:11,395 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:52:11,614 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:52:11,614 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:52:11,743 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:52:11,743 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:52:11,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:52:11 BoogieIcfgContainer [2025-02-06 18:52:11,743 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:52:11,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:52:11,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:52:11,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:52:11,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:52:10" (1/3) ... [2025-02-06 18:52:11,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5353ac0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:52:11, skipping insertion in model container [2025-02-06 18:52:11,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:11" (2/3) ... [2025-02-06 18:52:11,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5353ac0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:52:11, skipping insertion in model container [2025-02-06 18:52:11,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:52:11" (3/3) ... [2025-02-06 18:52:11,754 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2025-02-06 18:52:11,765 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:52:11,766 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-figure1-alt.wvr.c that has 3 procedures, 34 locations, 1 initial locations, 2 loop locations, and 10 error locations. [2025-02-06 18:52:11,766 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:52:11,814 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:52:11,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 84 flow [2025-02-06 18:52:11,879 INFO L124 PetriNetUnfolderBase]: 2/33 cut-off events. [2025-02-06 18:52:11,882 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:52:11,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 2/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 69 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-06 18:52:11,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 35 transitions, 84 flow [2025-02-06 18:52:11,891 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 76 flow [2025-02-06 18:52:11,900 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:52:11,910 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;@255e746, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:52:11,910 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-02-06 18:52:11,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:52:11,916 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-06 18:52:11,916 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:52:11,916 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:11,917 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:52:11,917 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:11,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash 238799717, now seen corresponding path program 1 times [2025-02-06 18:52:11,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:11,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84870555] [2025-02-06 18:52:11,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:11,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:11,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:52:12,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:52:12,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:12,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:12,106 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 18:52:12,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:12,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84870555] [2025-02-06 18:52:12,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84870555] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:12,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:12,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:52:12,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434841002] [2025-02-06 18:52:12,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:12,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:52:12,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:12,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:52:12,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:52:12,133 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-02-06 18:52:12,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 18:52:12,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:12,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-02-06 18:52:12,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:12,292 INFO L124 PetriNetUnfolderBase]: 194/416 cut-off events. [2025-02-06 18:52:12,292 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2025-02-06 18:52:12,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 416 events. 194/416 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1905 event pairs, 77 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 718. Up to 290 conditions per place. [2025-02-06 18:52:12,298 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 29 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2025-02-06 18:52:12,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 165 flow [2025-02-06 18:52:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:52:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:52:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-02-06 18:52:12,314 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-06 18:52:12,317 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 76 flow. Second operand 3 states and 70 transitions. [2025-02-06 18:52:12,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 165 flow [2025-02-06 18:52:12,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 151 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:52:12,323 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 84 flow [2025-02-06 18:52:12,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2025-02-06 18:52:12,328 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2025-02-06 18:52:12,328 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 84 flow [2025-02-06 18:52:12,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 18:52:12,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:12,328 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:12,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:52:12,329 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:12,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:12,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1853270985, now seen corresponding path program 1 times [2025-02-06 18:52:12,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:12,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42967892] [2025-02-06 18:52:12,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:12,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:12,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:52:12,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:52:12,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:12,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:12,420 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 18:52:12,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:12,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42967892] [2025-02-06 18:52:12,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42967892] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:12,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:12,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:52:12,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089961591] [2025-02-06 18:52:12,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:12,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:52:12,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:12,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:52:12,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:52:12,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-02-06 18:52:12,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 18:52:12,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:12,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-02-06 18:52:12,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:12,617 INFO L124 PetriNetUnfolderBase]: 298/579 cut-off events. [2025-02-06 18:52:12,617 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2025-02-06 18:52:12,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 579 events. 298/579 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2749 event pairs, 127 based on Foata normal form. 18/496 useless extension candidates. Maximal degree in co-relation 552. Up to 422 conditions per place. [2025-02-06 18:52:12,621 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2025-02-06 18:52:12,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 58 transitions, 240 flow [2025-02-06 18:52:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:52:12,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:52:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2025-02-06 18:52:12,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2025-02-06 18:52:12,626 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 84 flow. Second operand 4 states and 92 transitions. [2025-02-06 18:52:12,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 58 transitions, 240 flow [2025-02-06 18:52:12,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:52:12,629 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 111 flow [2025-02-06 18:52:12,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2025-02-06 18:52:12,629 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2025-02-06 18:52:12,629 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 111 flow [2025-02-06 18:52:12,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 18:52:12,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:12,630 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:12,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:52:12,630 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:12,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:12,630 INFO L85 PathProgramCache]: Analyzing trace with hash 477415908, now seen corresponding path program 1 times [2025-02-06 18:52:12,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:12,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737240259] [2025-02-06 18:52:12,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:12,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:12,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:52:12,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:52:12,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:12,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:12,705 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 18:52:12,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:12,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737240259] [2025-02-06 18:52:12,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737240259] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:12,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:12,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:52:12,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676396037] [2025-02-06 18:52:12,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:12,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:52:12,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:12,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:52:12,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:52:12,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-02-06 18:52:12,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 18:52:12,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:12,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-02-06 18:52:12,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:12,817 INFO L124 PetriNetUnfolderBase]: 221/499 cut-off events. [2025-02-06 18:52:12,817 INFO L125 PetriNetUnfolderBase]: For 156/160 co-relation queries the response was YES. [2025-02-06 18:52:12,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 499 events. 221/499 cut-off events. For 156/160 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2476 event pairs, 133 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 357. Up to 286 conditions per place. [2025-02-06 18:52:12,823 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 38 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2025-02-06 18:52:12,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 244 flow [2025-02-06 18:52:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:52:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:52:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-02-06 18:52:12,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6952380952380952 [2025-02-06 18:52:12,827 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 111 flow. Second operand 3 states and 73 transitions. [2025-02-06 18:52:12,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 244 flow [2025-02-06 18:52:12,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:52:12,830 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 132 flow [2025-02-06 18:52:12,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2025-02-06 18:52:12,832 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2025-02-06 18:52:12,833 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 132 flow [2025-02-06 18:52:12,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 18:52:12,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:12,833 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:12,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:52:12,833 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:12,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:12,834 INFO L85 PathProgramCache]: Analyzing trace with hash -516292791, now seen corresponding path program 1 times [2025-02-06 18:52:12,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:12,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866719744] [2025-02-06 18:52:12,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:12,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:12,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:52:12,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:52:12,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:12,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:12,918 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 18:52:12,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:12,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866719744] [2025-02-06 18:52:12,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866719744] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:12,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:12,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:52:12,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340579442] [2025-02-06 18:52:12,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:12,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:52:12,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:12,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:52:12,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:52:12,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-02-06 18:52:12,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 132 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 18:52:12,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:12,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-02-06 18:52:12,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:13,052 INFO L124 PetriNetUnfolderBase]: 272/593 cut-off events. [2025-02-06 18:52:13,053 INFO L125 PetriNetUnfolderBase]: For 475/477 co-relation queries the response was YES. [2025-02-06 18:52:13,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 593 events. 272/593 cut-off events. For 475/477 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2749 event pairs, 56 based on Foata normal form. 25/602 useless extension candidates. Maximal degree in co-relation 681. Up to 237 conditions per place. [2025-02-06 18:52:13,056 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 44 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2025-02-06 18:52:13,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 294 flow [2025-02-06 18:52:13,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:52:13,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:52:13,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2025-02-06 18:52:13,058 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2025-02-06 18:52:13,058 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 132 flow. Second operand 4 states and 96 transitions. [2025-02-06 18:52:13,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 294 flow [2025-02-06 18:52:13,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:52:13,061 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 160 flow [2025-02-06 18:52:13,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2025-02-06 18:52:13,062 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2025-02-06 18:52:13,062 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 160 flow [2025-02-06 18:52:13,062 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 18:52:13,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:13,062 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:13,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:52:13,062 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:13,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:13,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1008462737, now seen corresponding path program 1 times [2025-02-06 18:52:13,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:13,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844518942] [2025-02-06 18:52:13,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:13,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:13,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:52:13,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:52:13,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:13,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:13,143 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 18:52:13,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:13,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844518942] [2025-02-06 18:52:13,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844518942] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:13,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164487141] [2025-02-06 18:52:13,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:13,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:13,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:13,147 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 18:52:13,149 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 18:52:13,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:52:13,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:52:13,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:13,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:13,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:52:13,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:13,242 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:52:13,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164487141] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:13,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:52:13,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2025-02-06 18:52:13,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524057042] [2025-02-06 18:52:13,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:13,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:52:13,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:13,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:52:13,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:52:13,245 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-02-06 18:52:13,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 18:52:13,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:13,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-02-06 18:52:13,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:13,356 INFO L124 PetriNetUnfolderBase]: 328/721 cut-off events. [2025-02-06 18:52:13,356 INFO L125 PetriNetUnfolderBase]: For 850/864 co-relation queries the response was YES. [2025-02-06 18:52:13,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1806 conditions, 721 events. 328/721 cut-off events. For 850/864 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3599 event pairs, 89 based on Foata normal form. 36/731 useless extension candidates. Maximal degree in co-relation 679. Up to 347 conditions per place. [2025-02-06 18:52:13,361 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 38 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2025-02-06 18:52:13,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 303 flow [2025-02-06 18:52:13,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:52:13,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:52:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-02-06 18:52:13,364 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2025-02-06 18:52:13,364 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 160 flow. Second operand 4 states and 85 transitions. [2025-02-06 18:52:13,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 303 flow [2025-02-06 18:52:13,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 295 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:52:13,369 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 191 flow [2025-02-06 18:52:13,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2025-02-06 18:52:13,369 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2025-02-06 18:52:13,370 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 191 flow [2025-02-06 18:52:13,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 18:52:13,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:13,370 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:13,380 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 18:52:13,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:13,571 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:13,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:13,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2139649132, now seen corresponding path program 1 times [2025-02-06 18:52:13,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:13,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206378123] [2025-02-06 18:52:13,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:13,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:13,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:52:13,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:52:13,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:13,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:13,626 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 18:52:13,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:13,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206378123] [2025-02-06 18:52:13,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206378123] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:13,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:13,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:52:13,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642725851] [2025-02-06 18:52:13,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:13,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:52:13,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:13,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:52:13,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:52:13,634 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-02-06 18:52:13,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 18:52:13,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:13,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-02-06 18:52:13,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:13,732 INFO L124 PetriNetUnfolderBase]: 328/727 cut-off events. [2025-02-06 18:52:13,732 INFO L125 PetriNetUnfolderBase]: For 880/882 co-relation queries the response was YES. [2025-02-06 18:52:13,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 727 events. 328/727 cut-off events. For 880/882 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3681 event pairs, 259 based on Foata normal form. 5/716 useless extension candidates. Maximal degree in co-relation 767. Up to 577 conditions per place. [2025-02-06 18:52:13,737 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 31 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2025-02-06 18:52:13,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 253 flow [2025-02-06 18:52:13,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:52:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:52:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-02-06 18:52:13,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2025-02-06 18:52:13,738 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 191 flow. Second operand 3 states and 52 transitions. [2025-02-06 18:52:13,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 253 flow [2025-02-06 18:52:13,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:52:13,741 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 184 flow [2025-02-06 18:52:13,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2025-02-06 18:52:13,741 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2025-02-06 18:52:13,742 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 184 flow [2025-02-06 18:52:13,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 18:52:13,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:13,742 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:13,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:52:13,742 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:13,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2058843212, now seen corresponding path program 1 times [2025-02-06 18:52:13,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:13,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174006046] [2025-02-06 18:52:13,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:13,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:13,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:52:13,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:52:13,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:13,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:13,782 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 18:52:13,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:13,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174006046] [2025-02-06 18:52:13,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174006046] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:13,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:13,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:52:13,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884500098] [2025-02-06 18:52:13,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:13,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:52:13,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:13,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:52:13,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:52:13,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-02-06 18:52:13,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 184 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 18:52:13,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:13,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-02-06 18:52:13,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:13,942 INFO L124 PetriNetUnfolderBase]: 580/1157 cut-off events. [2025-02-06 18:52:13,943 INFO L125 PetriNetUnfolderBase]: For 1309/1341 co-relation queries the response was YES. [2025-02-06 18:52:13,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3155 conditions, 1157 events. 580/1157 cut-off events. For 1309/1341 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6053 event pairs, 305 based on Foata normal form. 31/1156 useless extension candidates. Maximal degree in co-relation 3141. Up to 708 conditions per place. [2025-02-06 18:52:13,950 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 65 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2025-02-06 18:52:13,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 76 transitions, 526 flow [2025-02-06 18:52:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:52:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:52:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-02-06 18:52:13,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2025-02-06 18:52:13,951 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 184 flow. Second operand 4 states and 85 transitions. [2025-02-06 18:52:13,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 76 transitions, 526 flow [2025-02-06 18:52:13,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 76 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:52:13,954 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 212 flow [2025-02-06 18:52:13,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2025-02-06 18:52:13,955 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2025-02-06 18:52:13,955 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 212 flow [2025-02-06 18:52:13,955 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 18:52:13,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:13,955 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:13,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:52:13,955 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:13,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:13,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1529928275, now seen corresponding path program 1 times [2025-02-06 18:52:13,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:13,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734560462] [2025-02-06 18:52:13,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:13,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:13,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:52:13,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:52:13,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:13,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:14,005 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 18:52:14,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:14,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734560462] [2025-02-06 18:52:14,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734560462] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:14,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553412419] [2025-02-06 18:52:14,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:14,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:14,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:14,008 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 18:52:14,012 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 18:52:14,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:52:14,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:52:14,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:14,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:14,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:52:14,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:14,098 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 18:52:14,098 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:52:14,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553412419] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:14,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:52:14,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:52:14,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14200546] [2025-02-06 18:52:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:14,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:52:14,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:14,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:52:14,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:52:14,123 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-02-06 18:52:14,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 18:52:14,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:14,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-02-06 18:52:14,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:14,325 INFO L124 PetriNetUnfolderBase]: 548/1086 cut-off events. [2025-02-06 18:52:14,325 INFO L125 PetriNetUnfolderBase]: For 1547/1590 co-relation queries the response was YES. [2025-02-06 18:52:14,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3295 conditions, 1086 events. 548/1086 cut-off events. For 1547/1590 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5587 event pairs, 78 based on Foata normal form. 38/1086 useless extension candidates. Maximal degree in co-relation 3279. Up to 371 conditions per place. [2025-02-06 18:52:14,333 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 82 selfloop transitions, 7 changer transitions 0/96 dead transitions. [2025-02-06 18:52:14,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 96 transitions, 642 flow [2025-02-06 18:52:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:52:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:52:14,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2025-02-06 18:52:14,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2025-02-06 18:52:14,335 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 212 flow. Second operand 6 states and 124 transitions. [2025-02-06 18:52:14,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 96 transitions, 642 flow [2025-02-06 18:52:14,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 627 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:52:14,338 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 219 flow [2025-02-06 18:52:14,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2025-02-06 18:52:14,339 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2025-02-06 18:52:14,339 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 219 flow [2025-02-06 18:52:14,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 18:52:14,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:14,339 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:14,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 18:52:14,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:14,541 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:14,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:14,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1852901725, now seen corresponding path program 1 times [2025-02-06 18:52:14,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:14,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284698714] [2025-02-06 18:52:14,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:14,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:14,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:52:14,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:52:14,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:14,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:14,574 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 18:52:14,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:14,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284698714] [2025-02-06 18:52:14,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284698714] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:14,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:14,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:52:14,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928226217] [2025-02-06 18:52:14,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:14,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:52:14,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:14,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:52:14,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:52:14,586 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-02-06 18:52:14,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 18:52:14,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:14,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-02-06 18:52:14,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:14,694 INFO L124 PetriNetUnfolderBase]: 490/1051 cut-off events. [2025-02-06 18:52:14,694 INFO L125 PetriNetUnfolderBase]: For 1750/1750 co-relation queries the response was YES. [2025-02-06 18:52:14,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3279 conditions, 1051 events. 490/1051 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5588 event pairs, 381 based on Foata normal form. 5/1053 useless extension candidates. Maximal degree in co-relation 3263. Up to 838 conditions per place. [2025-02-06 18:52:14,701 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 31 selfloop transitions, 1 changer transitions 3/41 dead transitions. [2025-02-06 18:52:14,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 41 transitions, 285 flow [2025-02-06 18:52:14,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:52:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:52:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2025-02-06 18:52:14,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2025-02-06 18:52:14,702 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 219 flow. Second operand 3 states and 51 transitions. [2025-02-06 18:52:14,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 41 transitions, 285 flow [2025-02-06 18:52:14,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 270 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-02-06 18:52:14,706 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 196 flow [2025-02-06 18:52:14,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2025-02-06 18:52:14,707 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2025-02-06 18:52:14,708 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 196 flow [2025-02-06 18:52:14,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 18:52:14,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:14,708 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:52:14,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:52:14,709 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:14,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:14,709 INFO L85 PathProgramCache]: Analyzing trace with hash 183136482, now seen corresponding path program 1 times [2025-02-06 18:52:14,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:14,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77261385] [2025-02-06 18:52:14,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:14,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:14,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:52:14,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:52:14,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:14,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:14,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:14,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77261385] [2025-02-06 18:52:14,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77261385] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:14,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394834770] [2025-02-06 18:52:14,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:14,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:14,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:14,782 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 18:52:14,785 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 18:52:14,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:52:14,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:52:14,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:14,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:14,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:52:14,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:14,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:14,855 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:14,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394834770] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:14,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:14,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:52:14,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800747942] [2025-02-06 18:52:14,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:14,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:52:14,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:14,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:52:14,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:52:14,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-02-06 18:52:14,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 196 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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 18:52:14,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:14,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-02-06 18:52:14,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:15,355 INFO L124 PetriNetUnfolderBase]: 1193/2310 cut-off events. [2025-02-06 18:52:15,356 INFO L125 PetriNetUnfolderBase]: For 3927/4025 co-relation queries the response was YES. [2025-02-06 18:52:15,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6885 conditions, 2310 events. 1193/2310 cut-off events. For 3927/4025 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12670 event pairs, 191 based on Foata normal form. 114/2422 useless extension candidates. Maximal degree in co-relation 6869. Up to 820 conditions per place. [2025-02-06 18:52:15,372 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 152 selfloop transitions, 12 changer transitions 0/169 dead transitions. [2025-02-06 18:52:15,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 169 transitions, 1159 flow [2025-02-06 18:52:15,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:52:15,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:52:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 218 transitions. [2025-02-06 18:52:15,374 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6228571428571429 [2025-02-06 18:52:15,374 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 196 flow. Second operand 10 states and 218 transitions. [2025-02-06 18:52:15,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 169 transitions, 1159 flow [2025-02-06 18:52:15,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 169 transitions, 1158 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:52:15,380 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 276 flow [2025-02-06 18:52:15,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=276, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2025-02-06 18:52:15,381 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2025-02-06 18:52:15,381 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 276 flow [2025-02-06 18:52:15,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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 18:52:15,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:15,381 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:15,389 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 18:52:15,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:15,582 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:15,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:15,583 INFO L85 PathProgramCache]: Analyzing trace with hash 256911991, now seen corresponding path program 1 times [2025-02-06 18:52:15,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:15,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522002361] [2025-02-06 18:52:15,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:15,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:15,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:52:15,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:52:15,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:15,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:15,655 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 18:52:15,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:15,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522002361] [2025-02-06 18:52:15,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522002361] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:15,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748392285] [2025-02-06 18:52:15,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:15,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:15,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:15,658 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 18:52:15,660 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 18:52:15,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:52:15,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:52:15,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:15,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:15,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:52:15,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:15,728 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 18:52:15,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:15,754 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 18:52:15,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748392285] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:15,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:15,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-02-06 18:52:15,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796887452] [2025-02-06 18:52:15,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:15,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 18:52:15,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:15,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 18:52:15,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-06 18:52:15,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-02-06 18:52:15,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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 18:52:15,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:15,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-02-06 18:52:15,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:16,021 INFO L124 PetriNetUnfolderBase]: 1333/2678 cut-off events. [2025-02-06 18:52:16,021 INFO L125 PetriNetUnfolderBase]: For 6270/6368 co-relation queries the response was YES. [2025-02-06 18:52:16,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8771 conditions, 2678 events. 1333/2678 cut-off events. For 6270/6368 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 15092 event pairs, 169 based on Foata normal form. 185/2862 useless extension candidates. Maximal degree in co-relation 8752. Up to 1059 conditions per place. [2025-02-06 18:52:16,039 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 86 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2025-02-06 18:52:16,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 748 flow [2025-02-06 18:52:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:52:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:52:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2025-02-06 18:52:16,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2025-02-06 18:52:16,041 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 276 flow. Second operand 6 states and 129 transitions. [2025-02-06 18:52:16,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 748 flow [2025-02-06 18:52:16,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 728 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-02-06 18:52:16,050 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 334 flow [2025-02-06 18:52:16,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2025-02-06 18:52:16,051 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2025-02-06 18:52:16,051 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 334 flow [2025-02-06 18:52:16,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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 18:52:16,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:16,052 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:16,060 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 18:52:16,255 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,SelfDestructingSolverStorable10 [2025-02-06 18:52:16,256 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:16,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:16,256 INFO L85 PathProgramCache]: Analyzing trace with hash 864831116, now seen corresponding path program 1 times [2025-02-06 18:52:16,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:16,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442410699] [2025-02-06 18:52:16,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:16,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:16,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:52:16,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:52:16,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:16,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:16,335 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 18:52:16,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:16,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442410699] [2025-02-06 18:52:16,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442410699] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:16,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:16,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:52:16,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752318952] [2025-02-06 18:52:16,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:16,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:52:16,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:16,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:52:16,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:52:16,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-02-06 18:52:16,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 334 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 18:52:16,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:16,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-02-06 18:52:16,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:16,664 INFO L124 PetriNetUnfolderBase]: 1535/3181 cut-off events. [2025-02-06 18:52:16,665 INFO L125 PetriNetUnfolderBase]: For 7959/8051 co-relation queries the response was YES. [2025-02-06 18:52:16,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10697 conditions, 3181 events. 1535/3181 cut-off events. For 7959/8051 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 18796 event pairs, 309 based on Foata normal form. 34/3214 useless extension candidates. Maximal degree in co-relation 10674. Up to 1781 conditions per place. [2025-02-06 18:52:16,692 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 87 selfloop transitions, 8 changer transitions 2/103 dead transitions. [2025-02-06 18:52:16,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 817 flow [2025-02-06 18:52:16,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:52:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:52:16,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-02-06 18:52:16,694 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6171428571428571 [2025-02-06 18:52:16,694 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 334 flow. Second operand 5 states and 108 transitions. [2025-02-06 18:52:16,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 817 flow [2025-02-06 18:52:16,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 103 transitions, 810 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 18:52:16,708 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 400 flow [2025-02-06 18:52:16,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2025-02-06 18:52:16,709 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 28 predicate places. [2025-02-06 18:52:16,710 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 400 flow [2025-02-06 18:52:16,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 18:52:16,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:16,710 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1] [2025-02-06 18:52:16,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 18:52:16,710 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:16,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:16,711 INFO L85 PathProgramCache]: Analyzing trace with hash -979245520, now seen corresponding path program 1 times [2025-02-06 18:52:16,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:16,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68609884] [2025-02-06 18:52:16,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:16,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:16,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:52:16,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:52:16,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:16,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:16,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:16,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68609884] [2025-02-06 18:52:16,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68609884] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:16,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945397743] [2025-02-06 18:52:16,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:16,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:16,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:16,796 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 18:52:16,799 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 18:52:16,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:52:16,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:52:16,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:16,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:16,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 18:52:16,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:16,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:16,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945397743] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:16,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:16,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:52:16,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250291620] [2025-02-06 18:52:16,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:16,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 18:52:16,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:16,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 18:52:16,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2025-02-06 18:52:16,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-02-06 18:52:16,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 400 flow. Second operand has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 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 18:52:16,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:16,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-02-06 18:52:16,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:17,728 INFO L124 PetriNetUnfolderBase]: 3070/6425 cut-off events. [2025-02-06 18:52:17,729 INFO L125 PetriNetUnfolderBase]: For 20332/20638 co-relation queries the response was YES. [2025-02-06 18:52:17,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21894 conditions, 6425 events. 3070/6425 cut-off events. For 20332/20638 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 44869 event pairs, 213 based on Foata normal form. 272/6696 useless extension candidates. Maximal degree in co-relation 21869. Up to 1285 conditions per place. [2025-02-06 18:52:17,775 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 186 selfloop transitions, 34 changer transitions 0/226 dead transitions. [2025-02-06 18:52:17,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 226 transitions, 1819 flow [2025-02-06 18:52:17,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 18:52:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 18:52:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2025-02-06 18:52:17,777 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7064935064935065 [2025-02-06 18:52:17,777 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 400 flow. Second operand 11 states and 272 transitions. [2025-02-06 18:52:17,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 226 transitions, 1819 flow [2025-02-06 18:52:17,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 226 transitions, 1810 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 18:52:17,806 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 810 flow [2025-02-06 18:52:17,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=810, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2025-02-06 18:52:17,807 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 44 predicate places. [2025-02-06 18:52:17,807 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 810 flow [2025-02-06 18:52:17,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 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 18:52:17,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:17,807 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:17,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 18:52:18,008 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,SelfDestructingSolverStorable12 [2025-02-06 18:52:18,008 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:18,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:18,009 INFO L85 PathProgramCache]: Analyzing trace with hash -167226266, now seen corresponding path program 1 times [2025-02-06 18:52:18,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:18,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755843114] [2025-02-06 18:52:18,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:18,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:18,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:52:18,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:52:18,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:18,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:52:18,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:18,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755843114] [2025-02-06 18:52:18,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755843114] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:18,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120367956] [2025-02-06 18:52:18,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:18,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:18,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:18,088 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 18:52:18,090 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 18:52:18,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:52:18,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:52:18,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:18,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:18,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:52:18,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:18,228 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 18:52:18,228 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:52:18,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120367956] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:18,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:52:18,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:52:18,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279487475] [2025-02-06 18:52:18,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:18,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:52:18,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:18,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:52:18,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:52:18,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-02-06 18:52:18,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 18:52:18,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:18,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-02-06 18:52:18,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:18,874 INFO L124 PetriNetUnfolderBase]: 3520/6968 cut-off events. [2025-02-06 18:52:18,874 INFO L125 PetriNetUnfolderBase]: For 26631/26733 co-relation queries the response was YES. [2025-02-06 18:52:18,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25552 conditions, 6968 events. 3520/6968 cut-off events. For 26631/26733 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 47552 event pairs, 590 based on Foata normal form. 295/6967 useless extension candidates. Maximal degree in co-relation 25519. Up to 2159 conditions per place. [2025-02-06 18:52:18,920 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 218 selfloop transitions, 7 changer transitions 0/229 dead transitions. [2025-02-06 18:52:18,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 229 transitions, 3050 flow [2025-02-06 18:52:18,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:52:18,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:52:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2025-02-06 18:52:18,922 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2025-02-06 18:52:18,922 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 810 flow. Second operand 6 states and 114 transitions. [2025-02-06 18:52:18,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 229 transitions, 3050 flow [2025-02-06 18:52:18,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 229 transitions, 2785 flow, removed 131 selfloop flow, removed 1 redundant places. [2025-02-06 18:52:18,971 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 748 flow [2025-02-06 18:52:18,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=748, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2025-02-06 18:52:18,972 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 47 predicate places. [2025-02-06 18:52:18,972 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 748 flow [2025-02-06 18:52:18,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 18:52:18,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:18,973 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:19,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 18:52:19,173 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,SelfDestructingSolverStorable13 [2025-02-06 18:52:19,174 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:19,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:19,174 INFO L85 PathProgramCache]: Analyzing trace with hash -48769074, now seen corresponding path program 1 times [2025-02-06 18:52:19,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:19,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818690902] [2025-02-06 18:52:19,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:19,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:19,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:52:19,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:52:19,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:19,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:19,250 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 18:52:19,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:19,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818690902] [2025-02-06 18:52:19,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818690902] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:19,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095494205] [2025-02-06 18:52:19,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:19,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:19,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:19,253 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 18:52:19,255 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 18:52:19,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:52:19,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:52:19,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:19,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:19,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:52:19,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:19,333 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 18:52:19,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:19,378 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 18:52:19,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095494205] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:19,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:19,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:52:19,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065286688] [2025-02-06 18:52:19,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:19,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:52:19,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:19,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:52:19,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:52:19,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-02-06 18:52:19,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 748 flow. Second operand has 12 states, 12 states have (on average 12.833333333333334) internal successors, (154), 12 states have internal predecessors, (154), 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 18:52:19,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:19,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-02-06 18:52:19,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:20,708 INFO L124 PetriNetUnfolderBase]: 5949/11435 cut-off events. [2025-02-06 18:52:20,708 INFO L125 PetriNetUnfolderBase]: For 41130/41392 co-relation queries the response was YES. [2025-02-06 18:52:20,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43493 conditions, 11435 events. 5949/11435 cut-off events. For 41130/41392 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 79417 event pairs, 1352 based on Foata normal form. 573/12007 useless extension candidates. Maximal degree in co-relation 43460. Up to 4015 conditions per place. [2025-02-06 18:52:20,772 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 382 selfloop transitions, 13 changer transitions 14/413 dead transitions. [2025-02-06 18:52:20,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 413 transitions, 5221 flow [2025-02-06 18:52:20,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:52:20,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:52:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2025-02-06 18:52:20,773 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5685714285714286 [2025-02-06 18:52:20,773 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 748 flow. Second operand 10 states and 199 transitions. [2025-02-06 18:52:20,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 413 transitions, 5221 flow [2025-02-06 18:52:20,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 413 transitions, 5191 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-02-06 18:52:20,850 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 806 flow [2025-02-06 18:52:20,850 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=806, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2025-02-06 18:52:20,850 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 55 predicate places. [2025-02-06 18:52:20,851 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 806 flow [2025-02-06 18:52:20,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.833333333333334) internal successors, (154), 12 states have internal predecessors, (154), 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 18:52:20,851 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:20,851 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2025-02-06 18:52:20,859 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 18:52:21,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:21,052 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:21,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash -308928084, now seen corresponding path program 2 times [2025-02-06 18:52:21,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:21,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531730735] [2025-02-06 18:52:21,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:52:21,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:21,058 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 18:52:21,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 28 statements. [2025-02-06 18:52:21,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:52:21,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-06 18:52:21,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:21,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531730735] [2025-02-06 18:52:21,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531730735] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:21,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915205750] [2025-02-06 18:52:21,086 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:52:21,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:21,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:21,088 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 18:52:21,090 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 18:52:21,122 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 18:52:21,129 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 28 statements. [2025-02-06 18:52:21,129 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:52:21,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:21,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:52:21,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-06 18:52:21,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-06 18:52:21,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915205750] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:21,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:21,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-06 18:52:21,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145625381] [2025-02-06 18:52:21,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:21,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:52:21,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:21,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:52:21,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:52:21,239 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2025-02-06 18:52:21,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 806 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 18:52:21,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:21,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2025-02-06 18:52:21,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:22,411 INFO L124 PetriNetUnfolderBase]: 6616/12155 cut-off events. [2025-02-06 18:52:22,412 INFO L125 PetriNetUnfolderBase]: For 53406/53511 co-relation queries the response was YES. [2025-02-06 18:52:22,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46433 conditions, 12155 events. 6616/12155 cut-off events. For 53406/53511 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 80649 event pairs, 1676 based on Foata normal form. 526/12681 useless extension candidates. Maximal degree in co-relation 46398. Up to 4362 conditions per place. [2025-02-06 18:52:22,502 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 132 selfloop transitions, 13 changer transitions 0/148 dead transitions. [2025-02-06 18:52:22,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 148 transitions, 1650 flow [2025-02-06 18:52:22,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:52:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:52:22,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2025-02-06 18:52:22,504 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2025-02-06 18:52:22,504 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 806 flow. Second operand 5 states and 84 transitions. [2025-02-06 18:52:22,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 148 transitions, 1650 flow [2025-02-06 18:52:22,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 148 transitions, 1607 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-02-06 18:52:22,636 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 813 flow [2025-02-06 18:52:22,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=813, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2025-02-06 18:52:22,637 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 53 predicate places. [2025-02-06 18:52:22,638 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 813 flow [2025-02-06 18:52:22,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 18:52:22,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:22,638 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1] [2025-02-06 18:52:22,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 18:52:22,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-06 18:52:22,843 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:22,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1344584602, now seen corresponding path program 2 times [2025-02-06 18:52:22,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:22,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067037766] [2025-02-06 18:52:22,844 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:52:22,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:22,851 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-02-06 18:52:22,861 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 18:52:22,863 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:52:22,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:23,157 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:23,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:23,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067037766] [2025-02-06 18:52:23,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067037766] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:23,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40154252] [2025-02-06 18:52:23,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:52:23,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:23,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:23,160 INFO L229 MonitoredProcess]: Starting monitored process 10 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 18:52:23,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 18:52:23,195 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-02-06 18:52:23,216 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 18:52:23,217 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:52:23,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:23,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 18:52:23,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:23,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:23,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40154252] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:23,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:23,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-02-06 18:52:23,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890563148] [2025-02-06 18:52:23,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:23,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 18:52:23,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:23,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 18:52:23,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2025-02-06 18:52:23,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-02-06 18:52:23,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 813 flow. Second operand has 21 states, 21 states have (on average 14.857142857142858) internal successors, (312), 21 states have internal predecessors, (312), 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 18:52:23,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:23,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-02-06 18:52:23,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:26,701 INFO L124 PetriNetUnfolderBase]: 15817/30472 cut-off events. [2025-02-06 18:52:26,701 INFO L125 PetriNetUnfolderBase]: For 191887/192231 co-relation queries the response was YES. [2025-02-06 18:52:26,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117983 conditions, 30472 events. 15817/30472 cut-off events. For 191887/192231 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 231247 event pairs, 1326 based on Foata normal form. 972/31441 useless extension candidates. Maximal degree in co-relation 117949. Up to 6233 conditions per place. [2025-02-06 18:52:26,988 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 510 selfloop transitions, 126 changer transitions 0/641 dead transitions. [2025-02-06 18:52:26,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 641 transitions, 5832 flow [2025-02-06 18:52:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 18:52:26,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-06 18:52:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 542 transitions. [2025-02-06 18:52:26,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7374149659863946 [2025-02-06 18:52:26,994 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 813 flow. Second operand 21 states and 542 transitions. [2025-02-06 18:52:26,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 641 transitions, 5832 flow [2025-02-06 18:52:27,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 641 transitions, 5730 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:52:27,316 INFO L231 Difference]: Finished difference. Result has 125 places, 174 transitions, 2381 flow [2025-02-06 18:52:27,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2381, PETRI_PLACES=125, PETRI_TRANSITIONS=174} [2025-02-06 18:52:27,317 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 88 predicate places. [2025-02-06 18:52:27,317 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 174 transitions, 2381 flow [2025-02-06 18:52:27,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.857142857142858) internal successors, (312), 21 states have internal predecessors, (312), 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 18:52:27,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:27,317 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:27,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 18:52:27,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:27,518 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:27,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:27,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1912912572, now seen corresponding path program 2 times [2025-02-06 18:52:27,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:27,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868214497] [2025-02-06 18:52:27,519 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:52:27,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:27,527 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-02-06 18:52:27,532 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 53 statements. [2025-02-06 18:52:27,533 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:52:27,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-02-06 18:52:27,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:27,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868214497] [2025-02-06 18:52:27,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868214497] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:27,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016796164] [2025-02-06 18:52:27,571 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:52:27,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:27,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:27,573 INFO L229 MonitoredProcess]: Starting monitored process 11 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 18:52:27,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 18:52:27,611 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-02-06 18:52:27,621 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 53 statements. [2025-02-06 18:52:27,621 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:52:27,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:27,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:52:27,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-02-06 18:52:27,691 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-02-06 18:52:27,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016796164] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:27,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:27,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-06 18:52:27,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666192757] [2025-02-06 18:52:27,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:27,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:52:27,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:27,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:52:27,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:52:27,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-02-06 18:52:27,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 174 transitions, 2381 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 18:52:27,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:27,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-02-06 18:52:27,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:30,938 INFO L124 PetriNetUnfolderBase]: 15817/30537 cut-off events. [2025-02-06 18:52:30,939 INFO L125 PetriNetUnfolderBase]: For 167270/167270 co-relation queries the response was YES. [2025-02-06 18:52:31,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121610 conditions, 30537 events. 15817/30537 cut-off events. For 167270/167270 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 232897 event pairs, 2860 based on Foata normal form. 706/31242 useless extension candidates. Maximal degree in co-relation 121557. Up to 9742 conditions per place. [2025-02-06 18:52:31,326 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 340 selfloop transitions, 16 changer transitions 6/366 dead transitions. [2025-02-06 18:52:31,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 366 transitions, 5982 flow [2025-02-06 18:52:31,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:52:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:52:31,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2025-02-06 18:52:31,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144 [2025-02-06 18:52:31,328 INFO L175 Difference]: Start difference. First operand has 125 places, 174 transitions, 2381 flow. Second operand 5 states and 86 transitions. [2025-02-06 18:52:31,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 366 transitions, 5982 flow [2025-02-06 18:52:31,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 366 transitions, 5290 flow, removed 292 selfloop flow, removed 9 redundant places. [2025-02-06 18:52:31,731 INFO L231 Difference]: Finished difference. Result has 120 places, 173 transitions, 2134 flow [2025-02-06 18:52:31,731 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2134, PETRI_PLACES=120, PETRI_TRANSITIONS=173} [2025-02-06 18:52:31,732 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 83 predicate places. [2025-02-06 18:52:31,732 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 173 transitions, 2134 flow [2025-02-06 18:52:31,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 18:52:31,732 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:31,732 INFO L206 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1] [2025-02-06 18:52:31,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 18:52:31,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 18:52:31,933 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:31,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:31,933 INFO L85 PathProgramCache]: Analyzing trace with hash 375215014, now seen corresponding path program 3 times [2025-02-06 18:52:31,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:31,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299535519] [2025-02-06 18:52:31,933 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:52:31,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:31,941 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 95 statements into 19 equivalence classes. [2025-02-06 18:52:31,988 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 95 of 95 statements. [2025-02-06 18:52:31,989 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-02-06 18:52:31,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:32,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:32,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299535519] [2025-02-06 18:52:32,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299535519] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:32,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725418971] [2025-02-06 18:52:32,543 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:52:32,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:32,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:32,545 INFO L229 MonitoredProcess]: Starting monitored process 12 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 18:52:32,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 18:52:32,580 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 95 statements into 19 equivalence classes. [2025-02-06 18:52:32,622 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 95 of 95 statements. [2025-02-06 18:52:32,623 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-02-06 18:52:32,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:32,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-06 18:52:32,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:32,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:33,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725418971] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:33,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:33,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2025-02-06 18:52:33,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622264293] [2025-02-06 18:52:33,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:33,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-06 18:52:33,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:33,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-06 18:52:33,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2025-02-06 18:52:33,395 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-02-06 18:52:33,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 173 transitions, 2134 flow. Second operand has 41 states, 41 states have (on average 14.926829268292684) internal successors, (612), 41 states have internal predecessors, (612), 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 18:52:33,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:33,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-02-06 18:52:33,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:42,410 INFO L124 PetriNetUnfolderBase]: 30402/60220 cut-off events. [2025-02-06 18:52:42,410 INFO L125 PetriNetUnfolderBase]: For 917932/917940 co-relation queries the response was YES. [2025-02-06 18:52:42,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246487 conditions, 60220 events. 30402/60220 cut-off events. For 917932/917940 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 473886 event pairs, 2703 based on Foata normal form. 1902/62119 useless extension candidates. Maximal degree in co-relation 246440. Up to 12107 conditions per place. [2025-02-06 18:52:42,873 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 971 selfloop transitions, 468 changer transitions 0/1443 dead transitions. [2025-02-06 18:52:42,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 1443 transitions, 15200 flow [2025-02-06 18:52:42,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-02-06 18:52:42,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2025-02-06 18:52:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1004 transitions. [2025-02-06 18:52:42,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6996515679442509 [2025-02-06 18:52:42,877 INFO L175 Difference]: Start difference. First operand has 120 places, 173 transitions, 2134 flow. Second operand 41 states and 1004 transitions. [2025-02-06 18:52:42,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 1443 transitions, 15200 flow [2025-02-06 18:52:43,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 1443 transitions, 14461 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:52:43,405 INFO L231 Difference]: Finished difference. Result has 193 places, 515 transitions, 7752 flow [2025-02-06 18:52:43,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2113, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=7752, PETRI_PLACES=193, PETRI_TRANSITIONS=515} [2025-02-06 18:52:43,406 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 156 predicate places. [2025-02-06 18:52:43,406 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 515 transitions, 7752 flow [2025-02-06 18:52:43,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 14.926829268292684) internal successors, (612), 41 states have internal predecessors, (612), 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 18:52:43,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:43,407 INFO L206 CegarLoopForPetriNet]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1] [2025-02-06 18:52:43,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 18:52:43,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:43,608 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-06 18:52:43,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:43,609 INFO L85 PathProgramCache]: Analyzing trace with hash -878280154, now seen corresponding path program 4 times [2025-02-06 18:52:43,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:43,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670701395] [2025-02-06 18:52:43,609 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:52:43,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:43,619 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 195 statements into 2 equivalence classes. [2025-02-06 18:52:43,679 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 195 of 195 statements. [2025-02-06 18:52:43,679 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:52:43,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:45,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:45,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670701395] [2025-02-06 18:52:45,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670701395] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:45,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701207039] [2025-02-06 18:52:45,625 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:52:45,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:45,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:45,628 INFO L229 MonitoredProcess]: Starting monitored process 13 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 18:52:45,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 18:52:45,671 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 195 statements into 2 equivalence classes. [2025-02-06 18:52:45,725 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 195 of 195 statements. [2025-02-06 18:52:45,726 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:52:45,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:45,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-02-06 18:52:45,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:45,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:47,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701207039] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:47,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:47,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 79 [2025-02-06 18:52:47,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069315239] [2025-02-06 18:52:47,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:47,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2025-02-06 18:52:47,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:47,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2025-02-06 18:52:47,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2025-02-06 18:52:47,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-02-06 18:52:47,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 515 transitions, 7752 flow. Second operand has 81 states, 81 states have (on average 14.962962962962964) internal successors, (1212), 81 states have internal predecessors, (1212), 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 18:52:47,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:47,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-02-06 18:52:47,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand