./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind2-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:56:25,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:56:25,434 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:56:25,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:56:25,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:56:25,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:56:25,464 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:56:25,464 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:56:25,465 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:56:25,465 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:56:25,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:56:25,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:56:25,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:56:25,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:56:25,466 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:56:25,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:56:25,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:56:25,467 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:56:25,467 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:56:25,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:56:25,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:56:25,467 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:56:25,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:56:25,467 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:56:25,467 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:56:25,467 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:56:25,467 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:56:25,467 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:56:25,468 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:56:25,468 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:56:25,468 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:56:25,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:56:25,468 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:56:25,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:56:25,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:56:25,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:56:25,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:56:25,469 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:56:25,469 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:56:25,469 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:56:25,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:56:25,469 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:56:25,469 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:56:25,469 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:56:25,469 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:56:25,469 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 -> 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 [2025-02-06 18:56:25,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:56:25,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:56:25,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:56:25,722 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:56:25,722 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:56:25,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-1.i [2025-02-06 18:56:26,900 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c1a98d9b5/e62e79b0d35245c4910d7da6298e5705/FLAG4187881b8 [2025-02-06 18:56:27,188 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:56:27,189 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.i [2025-02-06 18:56:27,205 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c1a98d9b5/e62e79b0d35245c4910d7da6298e5705/FLAG4187881b8 [2025-02-06 18:56:27,471 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c1a98d9b5/e62e79b0d35245c4910d7da6298e5705 [2025-02-06 18:56:27,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:56:27,474 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:56:27,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:56:27,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:56:27,478 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:56:27,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a9f603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27, skipping insertion in model container [2025-02-06 18:56:27,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,501 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:56:27,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:56:27,702 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:56:27,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:56:27,775 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:56:27,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27 WrapperNode [2025-02-06 18:56:27,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:56:27,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:56:27,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:56:27,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:56:27,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,798 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 85 [2025-02-06 18:56:27,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:56:27,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:56:27,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:56:27,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:56:27,804 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,805 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,814 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 18:56:27,814 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,819 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,823 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:56:27,825 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:56:27,825 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:56:27,825 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:56:27,825 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27" (1/1) ... [2025-02-06 18:56:27,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:56:27,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:56:27,851 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 18:56:27,853 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 18:56:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:56:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-02-06 18:56:27,874 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-02-06 18:56:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-02-06 18:56:27,874 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-02-06 18:56:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:56:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:56:27,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:56:27,875 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 18:56:27,961 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:56:27,963 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:56:28,127 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:56:28,127 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:56:28,191 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:56:28,191 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:56:28,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:56:28 BoogieIcfgContainer [2025-02-06 18:56:28,192 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:56:28,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:56:28,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:56:28,196 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:56:28,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:56:27" (1/3) ... [2025-02-06 18:56:28,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d930d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:56:28, skipping insertion in model container [2025-02-06 18:56:28,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:56:27" (2/3) ... [2025-02-06 18:56:28,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d930d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:56:28, skipping insertion in model container [2025-02-06 18:56:28,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:56:28" (3/3) ... [2025-02-06 18:56:28,198 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-1.i [2025-02-06 18:56:28,207 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:56:28,209 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-1.i that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2025-02-06 18:56:28,209 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:56:28,249 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:56:28,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2025-02-06 18:56:28,292 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-02-06 18:56:28,294 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:56:28,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-06 18:56:28,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2025-02-06 18:56:28,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2025-02-06 18:56:28,305 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:56:28,314 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;@49afff56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:56:28,315 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-02-06 18:56:28,323 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:56:28,323 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-06 18:56:28,323 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:56:28,324 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:28,324 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:56:28,324 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-06 18:56:28,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:28,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1603647636, now seen corresponding path program 1 times [2025-02-06 18:56:28,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:28,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373650525] [2025-02-06 18:56:28,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:28,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:28,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:56:28,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:56:28,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:28,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:28,554 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 18:56:28,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:28,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373650525] [2025-02-06 18:56:28,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373650525] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:56:28,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:56:28,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:56:28,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999739396] [2025-02-06 18:56:28,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:56:28,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:56:28,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:28,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:56:28,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:56:28,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:56:28,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 18:56:28,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:28,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:56:28,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:28,715 INFO L124 PetriNetUnfolderBase]: 165/355 cut-off events. [2025-02-06 18:56:28,715 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-02-06 18:56:28,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 355 events. 165/355 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1567 event pairs, 134 based on Foata normal form. 13/295 useless extension candidates. Maximal degree in co-relation 610. Up to 282 conditions per place. [2025-02-06 18:56:28,720 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 19 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2025-02-06 18:56:28,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 103 flow [2025-02-06 18:56:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:56:28,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:56:28,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2025-02-06 18:56:28,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-06 18:56:28,729 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 48 transitions. [2025-02-06 18:56:28,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 103 flow [2025-02-06 18:56:28,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 98 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:56:28,734 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 60 flow [2025-02-06 18:56:28,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2025-02-06 18:56:28,742 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2025-02-06 18:56:28,742 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 60 flow [2025-02-06 18:56:28,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 18:56:28,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:28,743 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:28,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:56:28,743 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-06 18:56:28,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:28,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1837874455, now seen corresponding path program 1 times [2025-02-06 18:56:28,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:28,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477948047] [2025-02-06 18:56:28,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:28,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:28,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:56:28,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:56:28,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:28,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:28,803 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 18:56:28,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:28,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477948047] [2025-02-06 18:56:28,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477948047] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:56:28,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:56:28,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:56:28,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599219283] [2025-02-06 18:56:28,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:56:28,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:56:28,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:28,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:56:28,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:56:28,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:56:28,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 18:56:28,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:28,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:56:28,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:28,931 INFO L124 PetriNetUnfolderBase]: 268/541 cut-off events. [2025-02-06 18:56:28,932 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 18:56:28,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 541 events. 268/541 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2452 event pairs, 159 based on Foata normal form. 16/465 useless extension candidates. Maximal degree in co-relation 1021. Up to 329 conditions per place. [2025-02-06 18:56:28,935 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 42 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2025-02-06 18:56:28,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 51 transitions, 203 flow [2025-02-06 18:56:28,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:56:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:56:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-02-06 18:56:28,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2025-02-06 18:56:28,936 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 4 states and 83 transitions. [2025-02-06 18:56:28,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 51 transitions, 203 flow [2025-02-06 18:56:28,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 51 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:56:28,938 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 81 flow [2025-02-06 18:56:28,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2025-02-06 18:56:28,938 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2025-02-06 18:56:28,938 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 81 flow [2025-02-06 18:56:28,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 18:56:28,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:28,939 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:28,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:56:28,939 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-06 18:56:28,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:28,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1826531034, now seen corresponding path program 1 times [2025-02-06 18:56:28,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:28,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619949492] [2025-02-06 18:56:28,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:28,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:28,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:56:28,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:56:28,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:28,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:28,967 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 18:56:28,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:28,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619949492] [2025-02-06 18:56:28,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619949492] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:56:28,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:56:28,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:56:28,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622146300] [2025-02-06 18:56:28,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:56:28,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:56:28,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:28,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:56:28,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:56:28,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:56:28,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 18:56:28,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:28,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:56:28,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:29,020 INFO L124 PetriNetUnfolderBase]: 222/483 cut-off events. [2025-02-06 18:56:29,020 INFO L125 PetriNetUnfolderBase]: For 131/139 co-relation queries the response was YES. [2025-02-06 18:56:29,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 483 events. 222/483 cut-off events. For 131/139 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2249 event pairs, 186 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 1013. Up to 381 conditions per place. [2025-02-06 18:56:29,023 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 20 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2025-02-06 18:56:29,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 121 flow [2025-02-06 18:56:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:56:29,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:56:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2025-02-06 18:56:29,024 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2025-02-06 18:56:29,024 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 81 flow. Second operand 3 states and 47 transitions. [2025-02-06 18:56:29,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 121 flow [2025-02-06 18:56:29,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:56:29,025 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 79 flow [2025-02-06 18:56:29,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2025-02-06 18:56:29,026 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2025-02-06 18:56:29,026 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 79 flow [2025-02-06 18:56:29,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 18:56:29,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:29,026 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:29,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:56:29,027 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-06 18:56:29,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:29,027 INFO L85 PathProgramCache]: Analyzing trace with hash -125007026, now seen corresponding path program 1 times [2025-02-06 18:56:29,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:29,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604118560] [2025-02-06 18:56:29,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:29,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:29,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:56:29,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:56:29,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:29,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:29,150 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 18:56:29,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:29,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604118560] [2025-02-06 18:56:29,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604118560] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:56:29,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117491999] [2025-02-06 18:56:29,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:29,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:29,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:56:29,154 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 18:56:29,155 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 18:56:29,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:56:29,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:56:29,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:29,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:29,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:56:29,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:56:29,319 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 18:56:29,319 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:56:29,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117491999] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:56:29,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:56:29,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 12 [2025-02-06 18:56:29,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406687194] [2025-02-06 18:56:29,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:56:29,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:56:29,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:29,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:56:29,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:56:29,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-06 18:56:29,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 79 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 18:56:29,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:29,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-06 18:56:29,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:29,748 INFO L124 PetriNetUnfolderBase]: 359/723 cut-off events. [2025-02-06 18:56:29,748 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2025-02-06 18:56:29,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 723 events. 359/723 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3686 event pairs, 58 based on Foata normal form. 24/668 useless extension candidates. Maximal degree in co-relation 1520. Up to 220 conditions per place. [2025-02-06 18:56:29,753 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 77 selfloop transitions, 14 changer transitions 8/104 dead transitions. [2025-02-06 18:56:29,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 104 transitions, 455 flow [2025-02-06 18:56:29,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 18:56:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 18:56:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2025-02-06 18:56:29,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2025-02-06 18:56:29,755 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 79 flow. Second operand 12 states and 183 transitions. [2025-02-06 18:56:29,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 104 transitions, 455 flow [2025-02-06 18:56:29,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 104 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:56:29,759 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 165 flow [2025-02-06 18:56:29,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=165, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2025-02-06 18:56:29,759 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2025-02-06 18:56:29,759 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 165 flow [2025-02-06 18:56:29,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 18:56:29,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:29,760 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:29,771 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 18:56:29,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:29,961 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-06 18:56:29,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:29,962 INFO L85 PathProgramCache]: Analyzing trace with hash -40483041, now seen corresponding path program 1 times [2025-02-06 18:56:29,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:29,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025758178] [2025-02-06 18:56:29,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:29,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:29,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:56:29,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:56:29,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:29,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:30,004 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 18:56:30,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:30,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025758178] [2025-02-06 18:56:30,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025758178] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:56:30,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:56:30,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:56:30,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618903028] [2025-02-06 18:56:30,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:56:30,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:56:30,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:30,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:56:30,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:56:30,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:56:30,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 165 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 18:56:30,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:30,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:56:30,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:30,189 INFO L124 PetriNetUnfolderBase]: 645/1276 cut-off events. [2025-02-06 18:56:30,189 INFO L125 PetriNetUnfolderBase]: For 1039/1047 co-relation queries the response was YES. [2025-02-06 18:56:30,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3052 conditions, 1276 events. 645/1276 cut-off events. For 1039/1047 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7072 event pairs, 365 based on Foata normal form. 46/1178 useless extension candidates. Maximal degree in co-relation 3038. Up to 807 conditions per place. [2025-02-06 18:56:30,198 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 64 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2025-02-06 18:56:30,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 72 transitions, 479 flow [2025-02-06 18:56:30,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:56:30,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:56:30,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-02-06 18:56:30,203 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-02-06 18:56:30,203 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 165 flow. Second operand 4 states and 78 transitions. [2025-02-06 18:56:30,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 72 transitions, 479 flow [2025-02-06 18:56:30,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 72 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:56:30,211 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 186 flow [2025-02-06 18:56:30,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2025-02-06 18:56:30,211 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2025-02-06 18:56:30,211 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 186 flow [2025-02-06 18:56:30,212 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 18:56:30,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:30,212 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:30,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:56:30,212 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-06 18:56:30,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:30,212 INFO L85 PathProgramCache]: Analyzing trace with hash 855742131, now seen corresponding path program 1 times [2025-02-06 18:56:30,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:30,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084749358] [2025-02-06 18:56:30,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:30,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:30,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:56:30,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:56:30,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:30,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:30,280 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 18:56:30,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:30,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084749358] [2025-02-06 18:56:30,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084749358] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:56:30,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76006025] [2025-02-06 18:56:30,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:30,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:30,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:56:30,282 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 18:56:30,284 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 18:56:30,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:56:30,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:56:30,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:30,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:30,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:56:30,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:56:30,358 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 18:56:30,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:56:30,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76006025] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:56:30,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:56:30,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:56:30,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101021170] [2025-02-06 18:56:30,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:56:30,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:56:30,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:30,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:56:30,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:56:30,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:56:30,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 18:56:30,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:30,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:56:30,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:30,539 INFO L124 PetriNetUnfolderBase]: 583/1136 cut-off events. [2025-02-06 18:56:30,539 INFO L125 PetriNetUnfolderBase]: For 1161/1185 co-relation queries the response was YES. [2025-02-06 18:56:30,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3100 conditions, 1136 events. 583/1136 cut-off events. For 1161/1185 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6027 event pairs, 95 based on Foata normal form. 46/1130 useless extension candidates. Maximal degree in co-relation 3084. Up to 262 conditions per place. [2025-02-06 18:56:30,545 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 91 selfloop transitions, 5 changer transitions 0/101 dead transitions. [2025-02-06 18:56:30,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 101 transitions, 724 flow [2025-02-06 18:56:30,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:56:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:56:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2025-02-06 18:56:30,547 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-02-06 18:56:30,547 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 186 flow. Second operand 6 states and 110 transitions. [2025-02-06 18:56:30,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 101 transitions, 724 flow [2025-02-06 18:56:30,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 101 transitions, 722 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:56:30,554 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 190 flow [2025-02-06 18:56:30,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2025-02-06 18:56:30,554 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2025-02-06 18:56:30,554 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 190 flow [2025-02-06 18:56:30,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 18:56:30,554 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:30,554 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:30,562 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 18:56:30,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:30,755 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-06 18:56:30,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:30,755 INFO L85 PathProgramCache]: Analyzing trace with hash 758202491, now seen corresponding path program 1 times [2025-02-06 18:56:30,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:30,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082081972] [2025-02-06 18:56:30,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:30,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:30,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:56:30,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:56:30,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:30,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:30,820 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 18:56:30,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:30,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082081972] [2025-02-06 18:56:30,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082081972] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:56:30,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824100557] [2025-02-06 18:56:30,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:30,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:30,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:56:30,823 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 18:56:30,825 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 18:56:30,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:56:30,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:56:30,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:30,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:30,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:56:30,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:56:30,883 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 18:56:30,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:56:30,917 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 18:56:30,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824100557] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:56:30,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:56:30,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:56:30,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739242325] [2025-02-06 18:56:30,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:56:30,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:56:30,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:30,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:56:30,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:56:30,928 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:56:30,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 190 flow. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 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 18:56:30,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:30,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:56:30,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:31,261 INFO L124 PetriNetUnfolderBase]: 1141/2256 cut-off events. [2025-02-06 18:56:31,262 INFO L125 PetriNetUnfolderBase]: For 2979/3031 co-relation queries the response was YES. [2025-02-06 18:56:31,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6418 conditions, 2256 events. 1141/2256 cut-off events. For 2979/3031 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 13035 event pairs, 311 based on Foata normal form. 138/2388 useless extension candidates. Maximal degree in co-relation 6402. Up to 699 conditions per place. [2025-02-06 18:56:31,277 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 156 selfloop transitions, 9 changer transitions 0/170 dead transitions. [2025-02-06 18:56:31,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 170 transitions, 1260 flow [2025-02-06 18:56:31,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:56:31,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:56:31,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2025-02-06 18:56:31,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.590625 [2025-02-06 18:56:31,281 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 190 flow. Second operand 10 states and 189 transitions. [2025-02-06 18:56:31,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 170 transitions, 1260 flow [2025-02-06 18:56:31,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 170 transitions, 1245 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-06 18:56:31,290 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 245 flow [2025-02-06 18:56:31,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=245, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2025-02-06 18:56:31,290 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2025-02-06 18:56:31,291 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 245 flow [2025-02-06 18:56:31,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 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 18:56:31,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:31,291 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:31,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 18:56:31,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:31,495 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-06 18:56:31,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:31,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1086743064, now seen corresponding path program 1 times [2025-02-06 18:56:31,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:31,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129922637] [2025-02-06 18:56:31,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:31,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:31,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:56:31,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:56:31,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:31,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:31,586 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 18:56:31,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:31,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129922637] [2025-02-06 18:56:31,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129922637] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:56:31,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053500547] [2025-02-06 18:56:31,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:31,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:31,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:56:31,589 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 18:56:31,590 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 18:56:31,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:56:31,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:56:31,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:31,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:31,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:56:31,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:56:31,654 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 18:56:31,654 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:56:31,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053500547] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:56:31,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:56:31,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:56:31,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815437365] [2025-02-06 18:56:31,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:56:31,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:56:31,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:31,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:56:31,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:56:31,661 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:56:31,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 18:56:31,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:31,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:56:31,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:31,980 INFO L124 PetriNetUnfolderBase]: 1127/2193 cut-off events. [2025-02-06 18:56:31,980 INFO L125 PetriNetUnfolderBase]: For 3608/3624 co-relation queries the response was YES. [2025-02-06 18:56:31,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6715 conditions, 2193 events. 1127/2193 cut-off events. For 3608/3624 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13065 event pairs, 210 based on Foata normal form. 32/2190 useless extension candidates. Maximal degree in co-relation 6697. Up to 652 conditions per place. [2025-02-06 18:56:31,995 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 97 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2025-02-06 18:56:31,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 111 transitions, 830 flow [2025-02-06 18:56:31,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:56:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:56:31,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2025-02-06 18:56:31,996 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-02-06 18:56:31,996 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 245 flow. Second operand 6 states and 114 transitions. [2025-02-06 18:56:31,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 111 transitions, 830 flow [2025-02-06 18:56:32,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 111 transitions, 780 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-02-06 18:56:32,010 INFO L231 Difference]: Finished difference. Result has 66 places, 45 transitions, 251 flow [2025-02-06 18:56:32,010 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=251, PETRI_PLACES=66, PETRI_TRANSITIONS=45} [2025-02-06 18:56:32,011 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2025-02-06 18:56:32,011 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 45 transitions, 251 flow [2025-02-06 18:56:32,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 18:56:32,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:32,012 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:32,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 18:56:32,212 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,SelfDestructingSolverStorable7 [2025-02-06 18:56:32,212 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-06 18:56:32,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:32,213 INFO L85 PathProgramCache]: Analyzing trace with hash -670703191, now seen corresponding path program 1 times [2025-02-06 18:56:32,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:32,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384351758] [2025-02-06 18:56:32,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:32,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:32,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:56:32,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:56:32,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:32,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:32,271 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 18:56:32,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:32,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384351758] [2025-02-06 18:56:32,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384351758] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:56:32,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817186956] [2025-02-06 18:56:32,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:32,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:32,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:56:32,277 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 18:56:32,279 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 18:56:32,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:56:32,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:56:32,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:32,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:32,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:56:32,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:56:32,337 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 18:56:32,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:56:32,364 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 18:56:32,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817186956] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:56:32,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:56:32,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:56:32,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371155529] [2025-02-06 18:56:32,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:56:32,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:56:32,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:32,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:56:32,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:56:32,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 18:56:32,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 45 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 18:56:32,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:32,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 18:56:32,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:32,695 INFO L124 PetriNetUnfolderBase]: 1607/3115 cut-off events. [2025-02-06 18:56:32,695 INFO L125 PetriNetUnfolderBase]: For 5513/5544 co-relation queries the response was YES. [2025-02-06 18:56:32,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9667 conditions, 3115 events. 1607/3115 cut-off events. For 5513/5544 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 19019 event pairs, 409 based on Foata normal form. 96/3208 useless extension candidates. Maximal degree in co-relation 9648. Up to 692 conditions per place. [2025-02-06 18:56:32,709 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 157 selfloop transitions, 14 changer transitions 0/175 dead transitions. [2025-02-06 18:56:32,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 175 transitions, 1291 flow [2025-02-06 18:56:32,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:56:32,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:56:32,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2025-02-06 18:56:32,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.575 [2025-02-06 18:56:32,711 INFO L175 Difference]: Start difference. First operand has 66 places, 45 transitions, 251 flow. Second operand 10 states and 184 transitions. [2025-02-06 18:56:32,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 175 transitions, 1291 flow [2025-02-06 18:56:32,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 175 transitions, 1265 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-06 18:56:32,723 INFO L231 Difference]: Finished difference. Result has 74 places, 51 transitions, 317 flow [2025-02-06 18:56:32,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=317, PETRI_PLACES=74, PETRI_TRANSITIONS=51} [2025-02-06 18:56:32,724 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2025-02-06 18:56:32,725 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 51 transitions, 317 flow [2025-02-06 18:56:32,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 18:56:32,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:32,725 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:32,731 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 18:56:32,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:32,926 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-06 18:56:32,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:32,926 INFO L85 PathProgramCache]: Analyzing trace with hash -523612529, now seen corresponding path program 2 times [2025-02-06 18:56:32,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:32,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125250480] [2025-02-06 18:56:32,927 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:56:32,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:32,935 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 18:56:32,937 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 24 statements. [2025-02-06 18:56:32,938 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:56:32,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:32,990 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:56:32,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:32,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125250480] [2025-02-06 18:56:32,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125250480] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:56:32,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602583562] [2025-02-06 18:56:32,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:56:32,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:32,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:56:32,993 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 18:56:33,001 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 18:56:33,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 18:56:33,046 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 24 statements. [2025-02-06 18:56:33,047 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:56:33,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:33,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 18:56:33,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:56:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:56:33,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:56:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:56:33,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602583562] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:56:33,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:56:33,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-06 18:56:33,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082676230] [2025-02-06 18:56:33,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:56:33,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:56:33,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:33,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:56:33,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:56:33,201 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-06 18:56:33,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 51 transitions, 317 flow. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 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 18:56:33,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:33,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-06 18:56:33,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:33,624 INFO L124 PetriNetUnfolderBase]: 1827/3557 cut-off events. [2025-02-06 18:56:33,624 INFO L125 PetriNetUnfolderBase]: For 7626/7654 co-relation queries the response was YES. [2025-02-06 18:56:33,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11149 conditions, 3557 events. 1827/3557 cut-off events. For 7626/7654 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22463 event pairs, 139 based on Foata normal form. 67/3622 useless extension candidates. Maximal degree in co-relation 11128. Up to 1303 conditions per place. [2025-02-06 18:56:33,641 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 18 changer transitions 48/139 dead transitions. [2025-02-06 18:56:33,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 139 transitions, 1145 flow [2025-02-06 18:56:33,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:56:33,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:56:33,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2025-02-06 18:56:33,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.459375 [2025-02-06 18:56:33,643 INFO L175 Difference]: Start difference. First operand has 74 places, 51 transitions, 317 flow. Second operand 10 states and 147 transitions. [2025-02-06 18:56:33,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 139 transitions, 1145 flow [2025-02-06 18:56:33,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 139 transitions, 1054 flow, removed 27 selfloop flow, removed 2 redundant places. [2025-02-06 18:56:33,667 INFO L231 Difference]: Finished difference. Result has 87 places, 60 transitions, 457 flow [2025-02-06 18:56:33,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=457, PETRI_PLACES=87, PETRI_TRANSITIONS=60} [2025-02-06 18:56:33,668 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 54 predicate places. [2025-02-06 18:56:33,668 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 60 transitions, 457 flow [2025-02-06 18:56:33,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 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 18:56:33,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:33,669 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:33,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 18:56:33,873 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,SelfDestructingSolverStorable9 [2025-02-06 18:56:33,873 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-06 18:56:33,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:33,874 INFO L85 PathProgramCache]: Analyzing trace with hash 822864582, now seen corresponding path program 2 times [2025-02-06 18:56:33,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:33,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598060613] [2025-02-06 18:56:33,874 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:56:33,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:33,879 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-06 18:56:33,882 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 26 statements. [2025-02-06 18:56:33,882 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:56:33,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:56:33,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:33,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598060613] [2025-02-06 18:56:33,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598060613] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:56:33,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053662536] [2025-02-06 18:56:33,930 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:56:33,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:33,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:56:33,932 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 18:56:33,934 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 18:56:33,965 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-06 18:56:33,971 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 26 statements. [2025-02-06 18:56:33,971 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:56:33,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:33,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 18:56:33,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:56:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:56:34,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:56:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:56:34,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053662536] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:56:34,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:56:34,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-06 18:56:34,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885248092] [2025-02-06 18:56:34,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:56:34,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:56:34,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:34,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:56:34,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:56:34,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-06 18:56:34,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 60 transitions, 457 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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 18:56:34,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:34,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-06 18:56:34,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:34,423 INFO L124 PetriNetUnfolderBase]: 1187/2350 cut-off events. [2025-02-06 18:56:34,423 INFO L125 PetriNetUnfolderBase]: For 7677/7680 co-relation queries the response was YES. [2025-02-06 18:56:34,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8652 conditions, 2350 events. 1187/2350 cut-off events. For 7677/7680 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 13415 event pairs, 127 based on Foata normal form. 34/2382 useless extension candidates. Maximal degree in co-relation 8623. Up to 992 conditions per place. [2025-02-06 18:56:34,433 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 28 selfloop transitions, 3 changer transitions 64/99 dead transitions. [2025-02-06 18:56:34,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 99 transitions, 931 flow [2025-02-06 18:56:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:56:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:56:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2025-02-06 18:56:34,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42578125 [2025-02-06 18:56:34,435 INFO L175 Difference]: Start difference. First operand has 87 places, 60 transitions, 457 flow. Second operand 8 states and 109 transitions. [2025-02-06 18:56:34,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 99 transitions, 931 flow [2025-02-06 18:56:34,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 99 transitions, 890 flow, removed 14 selfloop flow, removed 8 redundant places. [2025-02-06 18:56:34,449 INFO L231 Difference]: Finished difference. Result has 80 places, 32 transitions, 199 flow [2025-02-06 18:56:34,449 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=199, PETRI_PLACES=80, PETRI_TRANSITIONS=32} [2025-02-06 18:56:34,450 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2025-02-06 18:56:34,450 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 32 transitions, 199 flow [2025-02-06 18:56:34,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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 18:56:34,450 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:56:34,450 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:34,457 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 18:56:34,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:34,651 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-06 18:56:34,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:56:34,652 INFO L85 PathProgramCache]: Analyzing trace with hash 173328612, now seen corresponding path program 1 times [2025-02-06 18:56:34,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:56:34,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995907829] [2025-02-06 18:56:34,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:34,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:56:34,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 18:56:34,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 18:56:34,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:34,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:56:34,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:56:34,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995907829] [2025-02-06 18:56:34,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995907829] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:56:34,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261361937] [2025-02-06 18:56:34,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:56:34,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:34,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:56:34,739 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 18:56:34,744 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 18:56:34,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 18:56:34,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 18:56:34,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:56:34,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:56:34,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:56:34,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:56:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-06 18:56:34,852 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:56:34,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261361937] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:56:34,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:56:34,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2025-02-06 18:56:34,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067967552] [2025-02-06 18:56:34,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:56:34,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:56:34,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:56:34,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:56:34,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:56:34,874 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-06 18:56:34,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 32 transitions, 199 flow. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:56:34,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:56:34,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-06 18:56:34,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:56:35,002 INFO L124 PetriNetUnfolderBase]: 75/169 cut-off events. [2025-02-06 18:56:35,003 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2025-02-06 18:56:35,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 169 events. 75/169 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 531 event pairs, 2 based on Foata normal form. 14/182 useless extension candidates. Maximal degree in co-relation 543. Up to 37 conditions per place. [2025-02-06 18:56:35,003 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2025-02-06 18:56:35,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 48 transitions, 310 flow [2025-02-06 18:56:35,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 18:56:35,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 18:56:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2025-02-06 18:56:35,007 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2025-02-06 18:56:35,007 INFO L175 Difference]: Start difference. First operand has 80 places, 32 transitions, 199 flow. Second operand 9 states and 109 transitions. [2025-02-06 18:56:35,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 48 transitions, 310 flow [2025-02-06 18:56:35,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 237 flow, removed 3 selfloop flow, removed 20 redundant places. [2025-02-06 18:56:35,008 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2025-02-06 18:56:35,008 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2025-02-06 18:56:35,009 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2025-02-06 18:56:35,009 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2025-02-06 18:56:35,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:56:35,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2025-02-06 18:56:35,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 14 remaining) [2025-02-06 18:56:35,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2025-02-06 18:56:35,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2025-02-06 18:56:35,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2025-02-06 18:56:35,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2025-02-06 18:56:35,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2025-02-06 18:56:35,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2025-02-06 18:56:35,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2025-02-06 18:56:35,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2025-02-06 18:56:35,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2025-02-06 18:56:35,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2025-02-06 18:56:35,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2025-02-06 18:56:35,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2025-02-06 18:56:35,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 18:56:35,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:56:35,217 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:56:35,220 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 18:56:35,220 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 18:56:35,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 06:56:35 BasicIcfg [2025-02-06 18:56:35,224 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 18:56:35,224 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 18:56:35,224 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 18:56:35,224 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 18:56:35,224 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:56:28" (3/4) ... [2025-02-06 18:56:35,225 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 18:56:35,227 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f1 [2025-02-06 18:56:35,227 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f2 [2025-02-06 18:56:35,232 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2025-02-06 18:56:35,232 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-02-06 18:56:35,232 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-02-06 18:56:35,232 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 18:56:35,300 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 18:56:35,300 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 18:56:35,300 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 18:56:35,300 INFO L158 Benchmark]: Toolchain (without parser) took 7826.44ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 104.2MB in the beginning and 163.7MB in the end (delta: -59.5MB). Peak memory consumption was 111.7MB. Max. memory is 16.1GB. [2025-02-06 18:56:35,300 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:56:35,301 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.85ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 84.5MB in the end (delta: 19.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 18:56:35,301 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.54ms. Allocated memory is still 142.6MB. Free memory was 84.5MB in the beginning and 82.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:56:35,301 INFO L158 Benchmark]: Boogie Preprocessor took 25.03ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 81.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:56:35,301 INFO L158 Benchmark]: IcfgBuilder took 367.13ms. Allocated memory is still 142.6MB. Free memory was 81.3MB in the beginning and 58.3MB in the end (delta: 23.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 18:56:35,301 INFO L158 Benchmark]: TraceAbstraction took 7030.57ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 58.3MB in the beginning and 168.8MB in the end (delta: -110.5MB). Peak memory consumption was 52.9MB. Max. memory is 16.1GB. [2025-02-06 18:56:35,301 INFO L158 Benchmark]: Witness Printer took 75.86ms. Allocated memory is still 310.4MB. Free memory was 168.8MB in the beginning and 163.7MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 18:56:35,302 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.85ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 84.5MB in the end (delta: 19.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.54ms. Allocated memory is still 142.6MB. Free memory was 84.5MB in the beginning and 82.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.03ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 81.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 367.13ms. Allocated memory is still 142.6MB. Free memory was 81.3MB in the beginning and 58.3MB in the end (delta: 23.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 7030.57ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 58.3MB in the beginning and 168.8MB in the end (delta: -110.5MB). Peak memory consumption was 52.9MB. Max. memory is 16.1GB. * Witness Printer took 75.86ms. Allocated memory is still 310.4MB. Free memory was 168.8MB in the beginning and 163.7MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.9s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 957 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 907 mSDsluCounter, 378 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 344 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1919 IncrementalHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 34 mSDtfsCounter, 1919 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=457occurred in iteration=10, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 327 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 385 ConstructedInterpolants, 0 QuantifiedInterpolants, 951 SizeOfPredicates, 32 NumberOfNonLiveVariables, 642 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 180/270 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 18:56:35,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE